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Author : Yahya Al-Khafaji
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (16 download)
Download or read book New Pre-catalysts for Ring Opening of Lactides/lactones Based on Earth Abundant Metals written by Yahya Al-Khafaji and published by . This book was released on 2016 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Mark Walton
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (899 download)
Download or read book New Pre-catalysts for Olefin Polymerisation and Ring-opening Polymerisation of Lactides written by Mark Walton and published by . This book was released on 2014 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Morteza Jandaghi
Publisher :
ISBN 13 :
Total Pages : 148 pages
Book Rating : 4.:/5 (128 download)
Download or read book Alkylaluminophosphonate Catalysts for Ring-opening Polymerization of Lactones, Lactams, and Lactides written by Morteza Jandaghi and published by . This book was released on 2020 with total page 148 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Carla Natalia Ayala Castro
Publisher :
ISBN 13 :
Total Pages : 96 pages
Book Rating : 4.:/5 (71 download)
Download or read book Single Site Metal Catalysts for Ring Opening Polymerization of Lactides written by Carla Natalia Ayala Castro and published by . This book was released on 2006 with total page 96 pages. Available in PDF, EPUB and Kindle. Book excerpt: Abstract: Polymers derived from lactide (L, rae and meso) are currently finding numerous applications as biodegradable and biocompatible packaging materials for bulk commodities and drug delivery agents. The physical properties of the polymer much as the rate of hydrolysis, which forms a mechanism for time release of drugs, are dependent upon the microstructure of the polymer. Single-site metal alkoxide catalysts of the form LM(OR) where L = a [beta]-diiminate ligand and M Mg or Zn have proved effective in stereoselective ring opening polymerizations. To this end a new series of compounds LMX have been prepared where L = CH(C[t]BuNC6H3-2,6-[i]Pr2)2, M = Mg, Zn and Sn, and X a potential initiator for ring opening polymerizations of lactide i.e. an amide or alkoxide. A comparison is made with the previously reported complexes where L = CH(CMeNC6H3-2,6-[i]Pr2)2, M=Mg, Zn and Sn, and X=a potential initiator for ring opening polymerizations of lactide i.e. an amide or alkoxide. A comparison is made with the previously reported complexes where L=CH(CMeNC6H3-2,6-[i]Pr2)2.
Author : Pothupitiya Jinal U.
Publisher :
ISBN 13 :
Total Pages : 540 pages
Book Rating : 4.:/5 (111 download)
Download or read book Organocatalytic Ring-opening Polymerization of Cyclic Lactones written by Pothupitiya Jinal U. and published by . This book was released on 2019 with total page 540 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Ryan G. Wareham
Publisher :
ISBN 13 :
Total Pages : 112 pages
Book Rating : 4.:/5 (793 download)
Download or read book Indium Thiolate Catalysts for the Ring Opening Polymerization of Lactones written by Ryan G. Wareham and published by . This book was released on 2011 with total page 112 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Jessica Danielle Marks
Publisher :
ISBN 13 :
Total Pages : 92 pages
Book Rating : 4.:/5 (893 download)
Download or read book Indium Thiolate Catalysts for the Ring Opening Polymerization of Lactones written by Jessica Danielle Marks and published by . This book was released on 2012 with total page 92 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Yali Zhou
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (135 download)
Download or read book Main Group Salen-based Catalysts for Lactide Ring-opening Polymerisation written by Yali Zhou and published by . This book was released on 2022 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Abderrahmane Amgoune
Publisher :
ISBN 13 :
Total Pages : 46 pages
Book Rating : 4.:/5 (863 download)
Download or read book New Group 3 Organometallic Complexes for Ring-opening Polymerization of Lactones and Lactide written by Abderrahmane Amgoune and published by . This book was released on 2006 with total page 46 pages. Available in PDF, EPUB and Kindle. Book excerpt: Des familles de complexes alcoxy-amino-bis(phénolate) (ONNO) et bis(oxazoline) du groupe 3 ont été synthétisés et caractérisés par RMN et par diffraction des Rayons X. Le comportement de ces complexes en polymérisation du rac-lactide et de la rac-[beta]-butyrolactone a été étudié. Les complexes ONNO du groupe 3 ont démontré un bon contrôle et une très haute sélectivité pour la production de PLA hautement hétérotactique (90 %) et de PHB hautement syndiotactique (94 %). L'influence de la structure de ces complexes sur l'activité et la sélectivité de la polymérisation a pu être mise en évidence. D'autre part, les complexes BOX ont démontré une activité et une productivité très intéressante pour la polymérisation du rac-lactide.Une partie de ce travail a été consacré à l'utilisation de ces complexes pour la préparation de nouveaux copolymères diblocs stéréocontrôlés, dans lesquels nous avons étudié l'organisation des molécules à l'état solide et en solution.
Author : Sittichoke Tabthong
Publisher :
ISBN 13 :
Total Pages : 100 pages
Book Rating : 4.:/5 (86 download)
Download or read book Single-site Catalysts for the Ring-opening Polymerization of Rac-Lactide written by Sittichoke Tabthong and published by . This book was released on 2009 with total page 100 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Wolfgang Babel
Publisher : Springer
ISBN 13 : 3540400214
Total Pages : 345 pages
Book Rating : 4.5/5 (44 download)
Download or read book Biopolyesters written by Wolfgang Babel and published by Springer. This book was released on 2003-07-01 with total page 345 pages. Available in PDF, EPUB and Kindle. Book excerpt: Living systems synthesize seven different classes of polymers. They provide structure and form for cells and organisms, function as catalysts and energy storage and carry the genetic information. All these polymers possess technically interesting properties. Some of these biopolymers are already used commercially. This special volume of Advances in Biochemical Engineering/Biotechnology comprises 10 chapters. It gives an overview of the water insoluble biopolyesters, in particular of the microbially synthesized poly-hydroxyalkanoate (PHA) family. It reports the state of the art of metabolism, regulation and genetic background, the latest advances made in genetic optimization of bacteria, "construction" of transgenic plants and in vitro synthesis by means of purified enzymes. Furthermore, it describes relevant technologies and evaluates perspectives concerning increasing the economic viability and competitiveness of PHA and discusses applications in medicine, packaging, food and other fields.
Author : Zhiyuan Zhong
Publisher :
ISBN 13 : 9789036518291
Total Pages : 121 pages
Book Rating : 4.5/5 (182 download)
Download or read book Novel Calcium and Aluminum-based Initiators for the Controlled Ring-opening Polymerization of Lactides and Lactones written by Zhiyuan Zhong and published by . This book was released on 2002 with total page 121 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Insun Yu
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (13 download)
Download or read book Catalysis and Ligand Design written by Insun Yu and published by . This book was released on 2012 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Benjamin John Ireland
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (122 download)
Download or read book Cationic Organomagnesium Complexes as Homogeneous Catalysts for the Ring-opening Polymerization of Lactones written by Benjamin John Ireland and published by . This book was released on 2009 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Polylactones are biodegradable polymers which may be used as alternatives to conventional plastics and have shown promise in novel medical applications. Industrial production of polylactones requires the use of a catalyst. The work described herein is directed toward the development of novel cationic magnesium-based lactone-polymerization catalysts. These cationic species are produced by alkide abstraction from a neutral precursor; a strategy which has seen only preliminary exploration in the context of lactone polymerization. The target catalyst system features a neutral phosphinimine-derivative ligand structure which was developed and produced specifically for the purpose of lactone polymerization catalysis. Target complexes were obtained by reaction of neutral alkylmagnesium precursors with protonated ligand derivatives. Syntheses and characterization of novel species are described herein. These catalysts are very active in the polymerization of 6-caprolactone, generating high molecular weight polymers in mere minutes under mild conditions. A preliminary study of polymerization catalysis is also reported.
Author : Stanislaw Penczek
Publisher : Springer
ISBN 13 : 9783662152584
Total Pages : 317 pages
Book Rating : 4.1/5 (525 download)
Download or read book Cationic Ring-Opening Polymerization written by Stanislaw Penczek and published by Springer. This book was released on 2014-03-12 with total page 317 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Stephan Enthaler
Publisher : John Wiley & Sons
ISBN 13 : 3527335986
Total Pages : 326 pages
Book Rating : 4.5/5 (273 download)
Download or read book Zinc Catalysis written by Stephan Enthaler and published by John Wiley & Sons. This book was released on 2015-04-27 with total page 326 pages. Available in PDF, EPUB and Kindle. Book excerpt: Filling the gap in the market for comprehensive coverage of this hot topic, this timely book covers a wide range of organic transformations, e. g. reductions of unsaturated compounds, oxidation reactions, Friedel-Crafts reactions, hydroamination reactions, depolymerizations, transformations of carbon dioxide, oxidative coupling reactions, as well as C-C, C-N, and C-O bond formation reactions. A chapter on the application of zinc catalysts in total synthesis is also included. With its aim of stimulating further research and discussion in the field, this is a valuable reference for professionals in academia and industry wishing to learn about the latest developments.
Author : Teresa Cecchi
Publisher : Springer Nature
ISBN 13 : 3030634361
Total Pages : 427 pages
Book Rating : 4.0/5 (36 download)
Download or read book Biobased Products from Food Sector Waste written by Teresa Cecchi and published by Springer Nature. This book was released on 2021-10-18 with total page 427 pages. Available in PDF, EPUB and Kindle. Book excerpt: In the past, food waste has been used to produce biogas and biofuels, fertilizers, and animal feed. Using it as a feedstock for innovative biorefineries is not only an ethical issue but also a smart application of the circular economy. This book explores the zero-waste concept in the thriving biobased sector, proposing technologies and procedures to meet the sustainable development goals. The volume categorizes food waste sources and proposes an impressive number of high value-added compounds (e.g., platform chemicals, enzymes, nutraceuticals, antioxidants, organic acids, phosphate, bioadsorbents, pectin, solvents, and pigments) that can be obtained in a sequential biocascade, via chemical, biochemical, thermal, and physical technologies. The synthesis of bioplastics from food waste, their copolymerization and blending, as well as the production of biocomposites and bionanocomposite with biofillers from food scraps, are presented: eluding the cost of waste disposal, reducing biobased materials price, and avoiding using edible resources as a starting material for biobased items are the main beneficial peculiarities of the process. The Authors illustrate challenging characteristics of new biobased materials, such as their mechanical and physico-chemical features, their biodegradability, compostability, recyclability, chemical compatibility, and barrier properties. The volume also delves into socioeconomic considerations and environmental concerns related to the upcycling of food waste, as well as the safety and life cycle assessment of biobased products. Finally, the authors address how advances in digital technology can make food waste upcycling a negative-cost process and discuss best practices to practically implement the biorefinery concept. Research gaps and needs are suggested, and recommendations for food waste handling and management during this COVID-19 pandemic are provided.
