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Gelation And Micellization Of Polyethylene Oxide And Polypropylene Oxide Triblock Copolymers In Aqueous Solutions
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Book Synopsis Gelation and Micellization of Poly(ethylene Oxide) and Poly(propylene Oxide) Triblock Copolymers in Aqueous Solutions by : Erling Bonne Jørgensen
Download or read book Gelation and Micellization of Poly(ethylene Oxide) and Poly(propylene Oxide) Triblock Copolymers in Aqueous Solutions written by Erling Bonne Jørgensen and published by . This book was released on 1996 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Triblock Copolymers of Poly(2,3-dihydroxypropyl Methacrylate) and Poly(propylene Oxide) by : Elkin Mauricio Amado Zúñiga
Download or read book Triblock Copolymers of Poly(2,3-dihydroxypropyl Methacrylate) and Poly(propylene Oxide) written by Elkin Mauricio Amado Zúñiga and published by . This book was released on 2010 with total page 136 pages. Available in PDF, EPUB and Kindle. Book excerpt: Novel water soluble amphiphilic PGMA-b-PPO-b-PGMA triblock copolymers were successfully synthesized via ATRP technique. The blocks comprised a thermoresponsive poly(propylene oxide) (PPO) middle block with a molar mass of around 2000 g·mol-1 and two hydroxy-functional poly(2,3-dihydroxypropyl methacrylate) (PGMA) outer blocks of varying length. Their micellization in aqueous solutions was studied, as well as their adsorption behavior at the air-water interface. Besides, their adsorption kinetics and concomitant interactions with phospholipid model membranes were investigated in order to gain a better insight into the PGMA-b-PPO-b-PGMA-membrane interactions on a molecular level.
Book Synopsis Effect of Block Structure on the Micellisation and Gelation of Aqueous Solutions of Copolymers of Ethylene Oxide and Butylene Oxide by : Zhuo Yang
Download or read book Effect of Block Structure on the Micellisation and Gelation of Aqueous Solutions of Copolymers of Ethylene Oxide and Butylene Oxide written by Zhuo Yang and published by . This book was released on 1993 with total page 122 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Poly(ethylene Oxide) by : Frederick Eugene Bailey
Download or read book Poly(ethylene Oxide) written by Frederick Eugene Bailey and published by . This book was released on 1976 with total page 192 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Thermo- and PH-sensitive Hydrophilic Block Copolymers by : Thomas G. O'Lenick
Download or read book Thermo- and PH-sensitive Hydrophilic Block Copolymers written by Thomas G. O'Lenick and published by . This book was released on 2011 with total page 233 pages. Available in PDF, EPUB and Kindle. Book excerpt: This dissertation presents the synthesis of a series of thermo- and pH-sensitive hydrophilic block copolymers and the study of their solution behavior in water. By incorporating a small amount of weak acid or base groups into the thermosensitive block(s) of a hydrophilic block copolymer, the LCST of the thermosensitive block(s) can be modified by changing the solution pH. Accordingly, the critical micellization temperature (CMT) and the sol-gel transition temperature (T[subscript sol-gel]) of the block copolymer in water can be tuned. Chapter 1 describes the synthesis of thermo- and pH-sensitive poly(methoxydi(ethylene glycol) methacrylate-co-methacrylic acid)-b-PEO-b-poly(methoxydi(ethylene glycol) methacrylate-co-methacrylic acid) and the study of sol-gel transitions of its aqueous solutions at various pH values. The CMT of the 0.2 wt% solution and the T[subscript sol-gel] of the 12.0 wt% solution of this copolymer can be varied over a large temperature range. By judiciously controlling temperature and pH, multiple sol-gel-sol transitions were realized. Chapter 2 presents a systematic study of pH effect on rheological properties of micellar gels formed from 10.0 wt% aqueous solutions of thermo- and pH-sensitive poly(ethoxydi(ethylene glycol) acrylate-co-acrylic acid)-b-PEO-b-poly(ethoxydi(ethylene glycol) acrylate-co-acrylic acid). With the increase of pH, the sol-gel transition became broader. The plateau moduli (G[subscript N]) evaluated from frequency sweeps at T/T[subscript sol-gel] of 1.025, 1.032, and 1.039 decreased with the increase of pH from 3.00 to 5.40 with the largest drop observed at pH = ~ 4.7. The decrease in G[subscript N] reflects the reduction of the number of bridging chains. The ionization of carboxylic acid introduced charges onto the thermosensitive blocks and made the polymer more hydrophilic, facilitating the formation of loops and dangling chains. Chapter 3 presents the synthesis of PEO-b-poly(methoxydi(ethylene glycol) methacrylate-co-2-(N-methyl-N-(4-pyridyl)amino)ethyl methacrylate) with the thermosensitive block containing a catalytic 4-N, N-dialkylaminopyridine and the study of the effect of thermo-induced micellization on its activity in the hydrolysis of p-nitrophenyl acetate. The CMTs of this copolymer at pH of 7.06 and 7.56 were 40 and 37 °C, respectively. Below CMT, the logarithm of initial hydrolysis rate changed linearly with 1/T. Above CMT, the reaction rate leveled off, which is presumably because it was controlled by mass transport to the core of micelles above CMT.
Book Synopsis Properties of Aqueous Solutions of Triblock Copolymers of Ethylene Oxide and Propylene Oxide and Their Mixtures with Surfactants Studied by Surface Tension and Neutron Reflection by : Josélio Viera
Download or read book Properties of Aqueous Solutions of Triblock Copolymers of Ethylene Oxide and Propylene Oxide and Their Mixtures with Surfactants Studied by Surface Tension and Neutron Reflection written by Josélio Viera and published by . This book was released on 2002 with total page 548 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Physics of Complex Systems by : F. Mallamace
Download or read book The Physics of Complex Systems written by F. Mallamace and published by IOS Press. This book was released on 1997 with total page 802 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume focuses on the area of the physics of complex systems and provides both an overview of the field and more detailed examination of those topics within the field that are currently of greatest interest to researchers. The properties of complex systems play an important role in a variety of different and overlapping areas in physics, chemistry, biology, mathematics and technology. The research field of complex systems is very broad, but this volume attempts to be comprehensive. This book is a useful reference work for researchers in this area, whether graduate students or advanced academics. Up-to-date reviews of cutting-edge topics are provided, compiled by leading authorities and designed to both broaden the reader's insight and encourage the exploration of new problems in related fields. An overview of the present status of the physics of complex systems is provided on the following general topics: (1) scaling behaviours; (2) supramolecular systems; (3) aggregation, aggregation kinetics and disorderly growth mechanisms; (4) granularly matter; (5) polymers, associating polymers, polyelectrolytes and gels; (6) amphiphiles, emulsions, colloids, membranes and interface phenomena; (7) molecular motors; (8) phase separation and out of equilibrium dynamics; (9) turbulence, chaos and chaotic dynamics; (10) glass transition, supercooled fluids and (11) geometrically constrained dynamics.
Book Synopsis Nuclear Magnetic Resonance by : G A Webb
Download or read book Nuclear Magnetic Resonance written by G A Webb and published by Royal Society of Chemistry. This book was released on 2007-10-31 with total page 628 pages. Available in PDF, EPUB and Kindle. Book excerpt: As a spectroscopic method, Nuclear Magnetic Resonance (NMR) has seen spectacular growth over the past two decades, both as a technique and in its applications. Today the applications of NMR span a wide range of scientific disciplines, from physics to biology to medicine. Each volume of Nuclear Magnetic Resonance comprises a combination of annual and biennial reports which together provide comprehensive of the literature on this topic. This Specialist Periodical Report reflects the growing volume of published work involving NMR techniques and applications, in particular NMR of natural macromolecules which is covered in two reports: "NMR of Proteins and Acids" and "NMR of Carbohydrates, Lipids and Membranes". For those wanting to become rapidly acquainted with specific areas of NMR, this title provides unrivalled scope of coverage. Seasoned practitioners of NMR will find this an in valuable source of current methods and applications. Specialist Periodical Reports provide systematic and detailed review coverage in major areas of chemical research. Compiled by teams of leading authorities in the relevant subject areas, the series creates a unique service for the active research chemist, with regular, in-depth accounts of progress in particular fields of chemistry. Subject coverage within different volumes of a given title is similar and publication is on an annual or biennial basis.
Book Synopsis PEO-PPO-PEO Triblock Copolymers in Aqueous Solutions: Micellization and Self-assembly Into Fiberlike Aggregates by : Ece Aytan
Download or read book PEO-PPO-PEO Triblock Copolymers in Aqueous Solutions: Micellization and Self-assembly Into Fiberlike Aggregates written by Ece Aytan and published by . This book was released on 2014 with total page 176 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Synthesis and Aggregation Behavior of Poly(propylene Oxide)-based Amphiphilic and Triphilic Block Copolymers by : Samuel Oppong Kyeremateng
Download or read book Synthesis and Aggregation Behavior of Poly(propylene Oxide)-based Amphiphilic and Triphilic Block Copolymers written by Samuel Oppong Kyeremateng and published by . This book was released on 2010 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Novel PPO-based amphiphilic diblock copolymers and triphilic multiblock copolymer analogues of the architectures BA, CBA, CAB, and CABAC have been successfully synthesized by combination of atom transfer radical polymerization (ATRP) and copper(I)-catalyzed alkyne-azide cycloaddition (CuAAC) 'click' reaction. The A, B, and C components of the block copolymers comprise of hydrophilic poly(glycerol monomethacrylate) (PGMA), lipophilic poly(propylene oxide) (PPO), and perfluorocarbon segment, respectively. Molar mass values of the polymers were obtained from 1H and 19F NMR spectroscopy measurements. Size exclusion chromatography (SEC) analysis confirmed low polydispersities (1.2 ≤ Mw/Mn ≤ 1.5) of the polymers. The aggregation of the triphilic block copolymers analogues, CBA, CAB, and CABAC, in aqueous solution showed intriguing structures. The structures they formed were governed by the strong immiscibility between the lipophilic PPO blocks and the fluorophilic perfluorocarbon segments as well as the blocks sequence and length. Compartmentalized structures were observed due the strong immiscibility between the PPO block and the perfluorocarbon segment.
Book Synopsis Block and Graft Copolymerization by : R. J. Ceresa
Download or read book Block and Graft Copolymerization written by R. J. Ceresa and published by . This book was released on 1976 with total page 430 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Proceedings of the ... International Congress on Rheology by :
Download or read book Proceedings of the ... International Congress on Rheology written by and published by . This book was released on 1996 with total page 914 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Functional Nanostructures by : Sudipta Seal
Download or read book Functional Nanostructures written by Sudipta Seal and published by Springer Science & Business Media. This book was released on 2010-06-02 with total page 607 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is the first book about functional nanostructures. Nanocrystalline materials exhibit outstanding properties and represent a new class of structural materials having a wide range of applications. In particular, there is considerable interest in developing nanocrystalline materials to be used as functional materials in aerospace applications, automotive industry, wear applications, etc. Future progress in these high technological applications of nanocrystalline materials depends on development of new methods of their fabrication and understanding of the underlying nano-scale and interface effects causing their unique mechanical properties.
Book Synopsis Viscoelastic Properties and Gelation Behavior of a PEO-PPO-PEO Triblock Copolymer in Aqueous Solution with an EDTA Buffer by : Adam C. Hardy
Download or read book Viscoelastic Properties and Gelation Behavior of a PEO-PPO-PEO Triblock Copolymer in Aqueous Solution with an EDTA Buffer written by Adam C. Hardy and published by . This book was released on 2011 with total page 104 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Physical Review written by and published by . This book was released on 1996-08 with total page 1196 pages. Available in PDF, EPUB and Kindle. Book excerpt: Publishes papers that report results of research in statistical physics, plasmas, fluids, and related interdisciplinary topics. There are sections on (1) methods of statistical physics, (2) classical fluids, (3) liquid crystals, (4) diffusion-limited aggregation, and dendritic growth, (5) biological physics, (6) plasma physics, (7) physics of beams, (8) classical physics, including nonlinear media, and (9) computational physics.
Book Synopsis Viral Nanoparticles by : Nicole F. Steinmetz
Download or read book Viral Nanoparticles written by Nicole F. Steinmetz and published by CRC Press. This book was released on 2019-08-21 with total page 281 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book overviews the applications of viral nanoparticles (VNPs) in areas ranging from materials science to biomedicine. It summarizes the many different VNP building blocks and describes chemistries that allow one to attach, entrap, or display functionalities on VNPs. The book outlines the strategies for the construction of 1-, 2-, and 3-D arrays, highlights the achievements in utilizing VNPs as tools for novel biosensors and nanoelectronic devices, and describes efforts in designing VNPs for biomedical applications, including their use as gene delivery vectors, novel vaccines, imaging modalities, and applications in targeted therapeutics.
Book Synopsis Temperature-Responsive Polymers by : Vitaliy V. Khutoryanskiy
Download or read book Temperature-Responsive Polymers written by Vitaliy V. Khutoryanskiy and published by John Wiley & Sons. This book was released on 2018-06-01 with total page 408 pages. Available in PDF, EPUB and Kindle. Book excerpt: An authoritative resource that offers an understanding of the chemistry, properties and applications of temperature-responsive polymers With contributions from a distinguished panel of experts, Temperature-Responsive Polymers puts the focus on hydrophilic polymers capable of changing their physicochemical properties in response to changes in environmental temperature. The contributors review the chemistry of these systems, and discuss a variety of synthetic approaches for preparation of temperature-responsive polymers, physicochemical methods of their characterisation and potential applications in biomedical areas. The text reviews a wide-variety of topics including: The characterisation of temperature-responsive polymers; Infrared and Raman spectroscopy; Applications of temperature-responsive polymers grafted onto solid core nanoparticles; and much more. The contributors also explore how temperature-responsive polymers can be used in the biomedical field for applications such as tissue engineering. This important resource: Offers an important synthesis of the current research on temperature-responsive polymers Covers the chemistry, the synthetic approaches for presentation and the physiochemical method of temperature-responsive polymers Includes a review of the fundamental characteristics of temperature-responsive polymers Explores many of the potential applications in biomedical science, including drug delivery and gene therapy Written for polymer scientists in both academia and industry as well as postgraduate students working in the area of stimuli-responsive materials, this vital text offers an exploration of the chemistry, properties and current applications of temperature-responsive polymers.
