Development Of Biopolymer Foams By Supercritical Co2 Assisted Processes

Download Development Of Biopolymer Foams By Supercritical Co2 Assisted Processes full books in PDF, epub, and Kindle. Read online Development Of Biopolymer Foams By Supercritical Co2 Assisted Processes ebook anywhere anytime directly on your device. Fast Download speed and no annoying ads. We cannot guarantee that every ebooks is available!

Development of Biopolymer Foams by Supercritical CO2 Assisted Processes

Author : Jennifer Andrea Villamil Jiménez
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (139 download)

DOWNLOAD NOW!

Book Synopsis Development of Biopolymer Foams by Supercritical CO2 Assisted Processes by : Jennifer Andrea Villamil Jiménez

Download or read book Development of Biopolymer Foams by Supercritical CO2 Assisted Processes written by Jennifer Andrea Villamil Jiménez and published by . This book was released on 2023 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Polylactic acid (PLA) is a commercially available biopolymer that is of great interest in various industrial fields, especially for the production of polymer foams. With the development of technologies that seek to reduce the environmental impact of processes, chemical foaming agents are being replaced by physical agents, mainly supercritical fluids (SCF) such as carbon dioxide (sc-CO2). Currently, the mass production of low-density PLA foams with uniform microcellular morphology using SCFs as foaming agents is a challenge. This is mainly due to the low melt strength of PLA and its slow crystallisation kinetics. Among the different options to improve the characteristics of PLA, combining it with different types of fillers has great potential to improve the foaming but also the performance of the final composites. Moreover, the operating conditions and the characteristics of the fillers such as their size, aspect ratio, and surface chemistry play an important role in the final foam morphology. In this context, this work focused on the fabrication of composite foams from PLA and cellulose fibres usingsupercritical CO2 (sc-CO2) as foaming agent. The first part of the work was devoted to the formulation of the composites and the study of their properties, in particular the effect of the fibres on crystallinity. These composites were then foamed by a batch process and a continuous sc-CO2 assisted extrusion process. The effect of cellulose content and aspect ratio (length/diameter) on the solidification and crystallisation kinetics of PLA was studied. These results are used as a means of understanding the morphology and characteristics of the PLA-cellulose composite foams produced.

Foaming with Supercritical Fluids

Author : Ernesto Di Maio
Publisher : Elsevier
ISBN 13 : 0444637362
Total Pages : 486 pages
Book Rating : 4.4/5 (446 download)

DOWNLOAD NOW!

Book Synopsis Foaming with Supercritical Fluids by : Ernesto Di Maio

Download or read book Foaming with Supercritical Fluids written by Ernesto Di Maio and published by Elsevier. This book was released on 2021-11-06 with total page 486 pages. Available in PDF, EPUB and Kindle. Book excerpt: Foaming with Supercritical Fluids, Volume Nine provides a comprehensive description of the use of supercritical fluids as blowing agents in polymer foaming. To this aim, the fundamental issues on which the proper design and control of this process are rooted are discussed in detail, with specific attention devoted to the theoretical and experimental aspects of sorption thermodynamics of a blowing agent within a polymer, the effect of the absorbed blowing agent on the thermal, interfacial and rheological properties of the expanding matter, and the phase separation of the gaseous phase, and of the related bubble nucleation and growth phenomena. Several foaming technologies based on the use of supercritical blowing agents are then described, addressing the main issues in the light of the underlying chemical-physical phenomena. Offers strong fundamentals on polymer properties important on foaming Outlines the use of supercritical fluids for foaming Covers theoretical points-of-view, including foam formation of the polymer/gas solution to the setting of the final foam Discusses the several processing technologies and applications

Development of Semi-crystalline Polylactide Bead Foams Via Liquid CO2 Processing

Author : Jean-Philippe Garancher
Publisher :
ISBN 13 :
Total Pages : 353 pages
Book Rating : 4.:/5 (92 download)

DOWNLOAD NOW!

Book Synopsis Development of Semi-crystalline Polylactide Bead Foams Via Liquid CO2 Processing by : Jean-Philippe Garancher

Download or read book Development of Semi-crystalline Polylactide Bead Foams Via Liquid CO2 Processing written by Jean-Philippe Garancher and published by . This book was released on 2014 with total page 353 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Foam Extrusion

Author : S.-T. Lee
Publisher : CRC Press
ISBN 13 : 1439898596
Total Pages : 636 pages
Book Rating : 4.4/5 (398 download)

DOWNLOAD NOW!

Book Synopsis Foam Extrusion by : S.-T. Lee

Download or read book Foam Extrusion written by S.-T. Lee and published by CRC Press. This book was released on 2014-04-07 with total page 636 pages. Available in PDF, EPUB and Kindle. Book excerpt: Combining the science of foam with the engineering of extrusion processes, Foam Extrusion: Principles and Practice delivers a detailed discussion of the theory, design, processing, and application of degradable foam extraction. In one comprehensive volume, the editors present the collective expertise of leading academic, research, and industry specialists while laying the scientific foundation in such a manner that the microscopic transition from a nucleus to a void (nucleation) and macroscopic movement from a void to an object (formation) are plausibly addressed. To keep pace with significant improvements in foam extrusion technology, this Second Edition: Includes new chapters on the latest developments in processing/thermal management, rheology/melt strength, and biodegradable and sustainable foams Features extensive updates to chapters on extrusion equipment, blowing agents, polyethylene terephthalate (PET) foam, and microcellular innovation Contains new coverage of cutting-edge foaming mechanisms and technology, as well as new case studies, examples, and figures Capturing the interesting evolution of the field, Foam Extrusion: Principles and Practice, Second Edition provides scientists, engineers, and product development professionals with a modern, holistic view of foam extrusion to enhance research and development and aid in the selection of the optimal screw, die design, and foaming system.

Thermoplastic Foam Processing

Author : Richard Gendron
Publisher : CRC Press
ISBN 13 : 0203502167
Total Pages : 320 pages
Book Rating : 4.2/5 (35 download)

DOWNLOAD NOW!

Book Synopsis Thermoplastic Foam Processing by : Richard Gendron

Download or read book Thermoplastic Foam Processing written by Richard Gendron and published by CRC Press. This book was released on 2004-10-28 with total page 320 pages. Available in PDF, EPUB and Kindle. Book excerpt: As researchers seek replacements for banned, ozone-depleting foaming agents, the authors of Thermoplastic Foam Processing: Principles and Development strive to develop a better understanding of foaming processes and find solutions for day-to-day practice. This book presents the latest research in foam extrusion and physical foaming agents with a st

Bio-based Polymeric Foam from Soybean Oil and Carbon Dioxide

Author : Laetitia Mary Bonnaillie
Publisher : ProQuest
ISBN 13 : 9780549388036
Total Pages : pages
Book Rating : 4.3/5 (88 download)

DOWNLOAD NOW!

Book Synopsis Bio-based Polymeric Foam from Soybean Oil and Carbon Dioxide by : Laetitia Mary Bonnaillie

Download or read book Bio-based Polymeric Foam from Soybean Oil and Carbon Dioxide written by Laetitia Mary Bonnaillie and published by ProQuest. This book was released on 2008 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Polymeric foams are complex gas/liquid/solid composite materials with variable density and numerous advantages over bulk polymers. Raw materials currently being foamed are principally petroleum-based. Research seeking new bio-based polymeric foams has developed biobased polyurethane foams from plant-oil triglyceride polyols, whose properties compare to that of petroleum-based insulating foams, and biodegradable starch foams, for use in the packaging industry. The goal of this dissertation is to develop a new type of biobased foam from plant oil that is both stronger and more resilient than starch foam and with a higher bio-content than biobased polyurethane foam. Acrylated epoxidized soybean oil (AESO) possesses a wide range of properties depending on its level of functionality, and was chosen in this work to design resilient, rigid polymeric foams with a high bio-content. During free-radical polymerization, AESO forms a cross-linked, thermosetting polymer network. Carbon dioxide has a high solubility in plant oils and was chosen as the blowing agent for AESO foam. We designed a new foaming process inspired by commercial foaming processes and modified for the AESO/CO 2 system. The monomer was saturated with CO 2 under pressure. Then, extracting the mixture through a heater triggered simultaneous foam expansion and polymerization. The architecture of cured foams showed strong dependency on the foaming procedure and process parameters (timing, pressures, temperatures). We targeted the production of solid foams with a homogeneous, small-celled structure, that confers better physical and mechanical properties. The aging behavior of liquid AESO/CO 2 foam revealed the mechanisms of cell growth and degradation before cure. During foam cure, conflicting interests between polymerization kinetics and foam integrity presented the major design difficulties. The process parameters and foaming procedure were optimized to produce foam with increased homogeneity, smaller cells, and lower density, and strong, semi-rigid thermoset foams with a bio-content superior to 80% were successfully obtained. These foams are good candidates for applications such as foam-core sandwich panels and tissue-scaffolds. Our new foaming process may also be applied to other triglyceride-based monomers and customized according to monomer functionality and desired foam architecture. Biobased foams with various densities, cellular structure, and mechanical properties may be produced.

Polymeric Foams

Author : Shau-Tarng Lee
Publisher : CRC Press
ISBN 13 : 1498738893
Total Pages : 406 pages
Book Rating : 4.4/5 (987 download)

DOWNLOAD NOW!

Book Synopsis Polymeric Foams by : Shau-Tarng Lee

Download or read book Polymeric Foams written by Shau-Tarng Lee and published by CRC Press. This book was released on 2016-11-03 with total page 406 pages. Available in PDF, EPUB and Kindle. Book excerpt: Polymeric foams are sturdy yet lightweight materials with applications across a variety of industries, from packaging to aerospace. As demand for these materials increase, so does innovation in the development of new processes and products. This book captures the most dynamic advances in processes, technologies, and products related to the polymeric foam market. It describes the latest business trends including new microcellular commercialization, sustainable foam products, and nanofoams. It also discusses novel processes, new and environmentally friendly blowing agents, and the development and usage of various types of foams, including bead and polycarbonate, polypropylene, polyetherimide microcellular, and nanocellular. The book also covers flame-retardant foams, rigid foam composites, and foam sandwich composites and details applications in structural engineering, electronics, and insulation. Authored by leading experts in the field, this book minimizes the gap between research and application in this important and growing area.

Polymeric Foams

Author : Shau-Tarng Lee
Publisher : CRC Press
ISBN 13 : 1420061267
Total Pages : 328 pages
Book Rating : 4.4/5 (2 download)

DOWNLOAD NOW!

Book Synopsis Polymeric Foams by : Shau-Tarng Lee

Download or read book Polymeric Foams written by Shau-Tarng Lee and published by CRC Press. This book was released on 2008-12-24 with total page 328 pages. Available in PDF, EPUB and Kindle. Book excerpt: Explores the Latest Developments in Polymeric FoamsSince the 1960s polymeric foams have grown into a solid industry that affects almost every aspect of modern life. The industry has weathered the energy crisis in the 70s, ozone issues in the 80s, and recycle/reuse in the 90s. However, the pace of development and social climate is rapidly changing a

Blowing Agents and Foaming Processes

Author :
Publisher : iSmithers Rapra Publishing
ISBN 13 : 9781859574478
Total Pages : 218 pages
Book Rating : 4.5/5 (744 download)

DOWNLOAD NOW!

Book Synopsis Blowing Agents and Foaming Processes by :

Download or read book Blowing Agents and Foaming Processes written by and published by iSmithers Rapra Publishing. This book was released on 2004 with total page 218 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Processing Technology for Bio-Based Polymers

Author : Khalid Mahmood Zia
Publisher : Elsevier
ISBN 13 : 0323858198
Total Pages : 304 pages
Book Rating : 4.3/5 (238 download)

DOWNLOAD NOW!

Book Synopsis Processing Technology for Bio-Based Polymers by : Khalid Mahmood Zia

Download or read book Processing Technology for Bio-Based Polymers written by Khalid Mahmood Zia and published by Elsevier. This book was released on 2021-06-25 with total page 304 pages. Available in PDF, EPUB and Kindle. Book excerpt: Processing Technology for Bio-Based Polymers: Advanced Strategies and Practical Aspects brings together the latest advances and novel technologies surrounding the synthesis and manufacture of biopolymers, ranging from bio-based polymers to synthetic polymers from bio-derived monomers. Sections examine bio-based polymer chemistry, discuss polymerization process and emerging design technologies, cover manufacturing and processing approaches, explain cutting-edge approaches and innovative applications, and focus on biomedicals and other key application areas. Final chapters provide detailed discussion and an analysis of economic and environmental concerns, practical considerations, challenges, opportunities and future trends. This is a valuable resource for researchers, scientists and advanced students in polymer science, bio-based materials, nanomaterials, plastics engineering, biomaterials, chemistry, biotechnology, and materials science and engineering, as well as R&D professionals, engineers and industrialists interested in the development of biopolymers for advanced products and applications. Focuses on the processing of bio-based polymers, covering both traditional methods and innovative new approaches Offers novel opportunities and ideas for developing or improving technologies for biopolymer research, preparation and application Examines other key considerations, including reliability and end product, economic concerns, and environmental and lifecycle aspects

Foaming¬†+¬†Impregnation One-Step Process Using Supercritical CO2

Author : Antonio Montes
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (139 download)

DOWNLOAD NOW!

Book Synopsis Foaming¬†+¬†Impregnation One-Step Process Using Supercritical CO2 by : Antonio Montes

Download or read book Foaming¬†+¬†Impregnation One-Step Process Using Supercritical CO2 written by Antonio Montes and published by . This book was released on 2022 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Polymers are widely used in everyday life due to their properties as toughness, viscoelasticity, and the possibility to form glasses and semicrystalline structures. For that reason, it is used in mostly drug delivery systems and tissue engineering and in pharmaceutical and biomedical investigations. Foaming process allows creating porous structure into the polymer leading to scaffolds. Scaffolds are the focus of many investigations as prolonged drug delivery systems and implants or injections which are used to deliver cells, drugs, and genes into the body. Particulate leaching, freeze-drying, thermally induced phase separation, rapid prototyping, powder compaction, sol,Äìgel, and melt molding are the main techniques in front of supercritical fluid technology to prepare scaffolds. Supercritical foaming process using CO2 presents advantages as a high dissolution in polymers and a green process because CO2 is nontoxic, inexpensive, and reusable. Moreover, supercritical technology allows to do an impregnation with an active substance together with the foaming at the same time. Thus active substances entrapped into scaffolds could be fabricated in a one-step green process.

Food Packaging and Preservation

Author : Alexandru Mihai Grumezescu
Publisher : Academic Press
ISBN 13 : 0128112654
Total Pages : 590 pages
Book Rating : 4.1/5 (281 download)

DOWNLOAD NOW!

Book Synopsis Food Packaging and Preservation by : Alexandru Mihai Grumezescu

Download or read book Food Packaging and Preservation written by Alexandru Mihai Grumezescu and published by Academic Press. This book was released on 2017-10-20 with total page 590 pages. Available in PDF, EPUB and Kindle. Book excerpt: Food Packaging and Preservation, Volume 9 in the Handbook of Food Bioengineering series, explores recent approaches to preserving and prolonging safe use of food products while also maintaining the properties of fresh foods. This volume contains valuable information and novel ideas regarding recently investigated packaging techniques and their implications on food bioengineering. In addition, classical and modern packaging materials and the impact of materials science on the development of smart packaging approaches are discussed. This book is a one-stop-shop for anyone in the food industry seeking to understand how bioengineering can foster research and innovation. Presents cutting technologies and approaches utilized in current and future food preservation for both food and beverages Offers research methods for the creation of novel preservatives and packaging materials to improve the quality and lifespan of preserved foods Features techniques to ensure the safe use of foods for longer periods of time Provides solutions of antimicrobial films and coatings for food packaging applications to enhance food safety and quality

Sustainable Foaming Using Supercritical Carbon Dioxide and Biopolymers

Author : Guilherme de Macedo Rooweder Lima
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (143 download)

DOWNLOAD NOW!

Book Synopsis Sustainable Foaming Using Supercritical Carbon Dioxide and Biopolymers by : Guilherme de Macedo Rooweder Lima

Download or read book Sustainable Foaming Using Supercritical Carbon Dioxide and Biopolymers written by Guilherme de Macedo Rooweder Lima and published by . This book was released on 2024 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Poly (lactic Acid) Foaming Assisted by Supercritical CO2

Author : Yves-Marie Corre
Publisher :
ISBN 13 :
Total Pages : 190 pages
Book Rating : 4.:/5 (81 download)

DOWNLOAD NOW!

Book Synopsis Poly (lactic Acid) Foaming Assisted by Supercritical CO2 by : Yves-Marie Corre

Download or read book Poly (lactic Acid) Foaming Assisted by Supercritical CO2 written by Yves-Marie Corre and published by . This book was released on 2010 with total page 190 pages. Available in PDF, EPUB and Kindle. Book excerpt: The poly (lactic acid) (PLA), through its organic origin and its biodegradation properties, can be a good alternative to petroleum-based polymers. To this end, the foaming of PLA by supercritical CO2 was evaluated in this study as an alternative to expanded polystyrene (EPS) for the production of food packaging. Because low rheological properties of this type of polyester, a first chain extension step was necessary to ensure a good foaming ability of PLA. Following a full characterization in physicochemical, rheological and thermal domain, a batch foaming assisted with supercritical CO2 was achieved. The influence of the foaming parameters, the extent of chain modificaton as well as the contribution of crystallization on cell morphology was evaluated. Based on these parameters, structures ranging from micro to macro-cellular-cell were obtained.

Extracellular Matrix for Tissue Engineering and Biomaterials

Author : Anna C. Berardi
Publisher : Springer
ISBN 13 : 3319770233
Total Pages : 218 pages
Book Rating : 4.3/5 (197 download)

DOWNLOAD NOW!

Book Synopsis Extracellular Matrix for Tissue Engineering and Biomaterials by : Anna C. Berardi

Download or read book Extracellular Matrix for Tissue Engineering and Biomaterials written by Anna C. Berardi and published by Springer. This book was released on 2018-04-13 with total page 218 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume provides a state-of-art-report on the new methodologies in tissue engineering and developments in the biomaterials field based on the extracellular matrix-relevant discovery. Extracellular Matrix for Tissue Engineering and Biomaterials opens with an overview of the latest extracellular matrix research and in Part I, focuses on its biology and its role on cell behavior and cell fate relevant for the design of biomimetic surfaces. Part II details issues regarding the strategies currently applied in the research of biologically inspired materials and material systems for the replacement, repair and regeneration of tissues and organs. Part III presents the latest development methods applying knowledge from biology towards nanotechnology, to promote the restoration of the functionality of a living tissue. The book ranges from fundamental biology associated with tissue regeneration for the development of biomimetic approaches to controlling tissue formation, cell function, differentiation and angiogenesis using factors involved in normal tissue development and function. With the breadth and depth of the coverage of this topic, this book will serve as a valuable reference for anyone working in tissue engineering or biomaterials – from scientists, chemists and biologists through physicists, bioengineers and clinicians.

Blend- and Surface-assisted Foaming of Polymers with Supercritical Carbon Dioxide

Author : Srinivas Siripurapu
Publisher :
ISBN 13 :
Total Pages : 182 pages
Book Rating : 4.:/5 (527 download)

DOWNLOAD NOW!

Book Synopsis Blend- and Surface-assisted Foaming of Polymers with Supercritical Carbon Dioxide by : Srinivas Siripurapu

Download or read book Blend- and Surface-assisted Foaming of Polymers with Supercritical Carbon Dioxide written by Srinivas Siripurapu and published by . This book was released on 2003 with total page 182 pages. Available in PDF, EPUB and Kindle. Book excerpt: Keywords: polymer surfactants, polymer blends, high pressure rheology, controlled foam nucleation, carbon dioxide, nanoporous polymers, microcellular foam, supercritical fluids.

Advanced Supercritical Fluids Technologies

Author : Igor Pioro
Publisher : BoD – Books on Demand
ISBN 13 : 183880708X
Total Pages : 224 pages
Book Rating : 4.8/5 (388 download)

DOWNLOAD NOW!

Book Synopsis Advanced Supercritical Fluids Technologies by : Igor Pioro

Download or read book Advanced Supercritical Fluids Technologies written by Igor Pioro and published by BoD – Books on Demand. This book was released on 2020-05-20 with total page 224 pages. Available in PDF, EPUB and Kindle. Book excerpt: Using SuperCritical Fluids (SCFs) in various processes is not new, because Mother Nature has been processing minerals in aqueous solutions at critical and supercritical pressures for billions of years. Somewhere in the 20th century, SCFs started to be used in various industries as working fluids, coolants, chemical agents, etc. Written by an international team of experts and complete with the latest research, development, and design, Advanced Supercritical Fluids Technologies is a unique technical book, completely dedicated to modern and advanced applications of supercritical fluids in various industries.Advanced Supercritical Fluids Technologies provides engineers and specialists in various industries dealing with SCFs as well as researchers, scientists, and students of the corresponding departments with a comprehensive overview of the current status, latest trends and developments of these technologies.Dr Igor Pioro is a professor at the University of Ontario Institute of Technology, Canada, and the Founding Editor of the ASME Journal of Nuclear Engineering and Radiation Science.