Download or read book Effects of Temperature and Anaesthetic Molecules on the Aggregation of Block Copolymers written by and published by . This book was released on 1901 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: An increase in temperature induces allregation of Pluronics. The dehydration of POP segments enhances the hydrophobic interaction and drives the formation of aggregates. The POP/POE mass ratio and relative molar mass of the Pluronics are factors that affect the onset of aggregation. Pluronics appear to aggregate in the order of clusters (without hydrophobic core), larger aggregates and well defined micelles as the temperature is increased. The length of the POE segments was found to be important in determining the temperature dependence of the size of aggregates. The core of the micelles contains some water and the amount decreases with increasing hydrophobicity of the Pluronics. An addition of small amounts (several mM) of the anesthetics induces the aggregation of Pluronics at 25°C. The addition of 1 mM of anesthetic is estimated to be equivalent to ca. a 1-2°C increase in temperature. It is deduced that, whereas an increase in temperature removes water of hydration from around the POP segments, the anesthetic molecules tend to replace water of hydration around these segments. The hydrogen bonding (between acidic hydrogen of anesthetic molecules and oxygen of POP segments) and the hydrophobic Interaction (between anesthetic molecules and POP segments) we considered to be the chemical and physical driving force, respectively, for the aggregation. The anesthetic molecules are found to distribute in both the hydrophobic core and hydrophilic corona but with a preference for the interfacial region either between the hydrophobic and hydrophilic segments or. between the hydrophilic segment and bulk water. This study of triblock copolymer aggregates as a solvation model for membranes has shown that inhalation anesthetics may affect the hydration water, the so called "biological water", of a membrane. It is proposed that the dehydration effect shown by the anesthetics could play an important role in the mechanism of anesthesia.
Download or read book Effects of Temperature and Anaesthetic Molecules on the Aggregation of Block Copolymers written by and published by . This book was released on 1999 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book American Doctoral Dissertations written by and published by . This book was released on 1999 with total page 848 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Dissertation Abstracts International written by and published by . This book was released on 2000 with total page 846 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Polymers for Biomedical Applications written by Anil Mahapatro and published by American Chemical Society. This book was released on 2008-04-17 with total page 442 pages. Available in PDF, EPUB and Kindle. Book excerpt: Research on applications of polymers for biomedical applications has increased dramatically to find improved medical plastics for this rapidly evolving field. This book brings together various aspects of recent research and developments within academia and industry related to polymers for biomedical applications.
Download or read book Proceedings of the International Conference on Colloid and Surface Science written by Y. Iwasawa and published by Elsevier. This book was released on 2001-02-15 with total page 1129 pages. Available in PDF, EPUB and Kindle. Book excerpt: The purpose of this Conference was to discuss the results of recent developments and the future prospect in science and technology of the field. The field has been growing and flourishing, while indicating many problems to be uncovered and solved. The conference was structured to encourage interaction and to stimulate the exchange of ideas to accomplish the above purpose. Key issues and materials related to the Conference were included as follows: • Molecular Assemblies in Solutions; • Fine Particles and Colloidal Dispersions; • Supramolecular Organized Films; • Nanostructural Solid Surfaces; • Industrial Applications and Products. The Conference comprised 2 plenary lectures, 42 invited lectures, 150 oral presentations and 266 poster presentations.
Download or read book Directory of Graduate Research written by and published by . This book was released on 2001 with total page 1846 pages. Available in PDF, EPUB and Kindle. Book excerpt: Faculties, publications and doctoral theses in departments or divisions of chemistry, chemical engineering, biochemistry and pharmaceutical and/or medicinal chemistry at universities in the United States and Canada.
Download or read book Synthesis and Applications of Copolymers written by Anbanandam Parthiban and published by John Wiley & Sons. This book was released on 2014-06-23 with total page 408 pages. Available in PDF, EPUB and Kindle. Book excerpt: Understanding the reactivity of monomers is crucial in creating copolymers and determining the outcome of copolymerization. Covering the fundamental aspects of polymerization, Synthesis and Applications of Copolymers explores the reactivity of monomers and reaction conditions that ensure that the newly formed polymeric materials exhibit desired properties. Referencing a wide-range of disciplines, the book provides researchers, students, and scientists with the preparation of a diverse variety of copolymers and their recent developments, with a particular focus on copolymerization, crystallization, and techniques like nanoimprinting and micropatterning.
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.
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.
Download or read book Research Awards Index written by and published by . This book was released on with total page 1416 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Stimuli Responsive Gels written by Dirk Kuckling and published by MDPI. This book was released on 2018-10-11 with total page 289 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is a printed edition of the Special Issue "Stimuli-Responsive Gels" that was published in Gels
Download or read book Polymer Micelles written by Shin-ichi Yusa and published by MDPI. This book was released on 2018-04-20 with total page 229 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is a printed edition of the Special Issue "Polymer Micelles" that was published in Polymers
Download or read book Biodegradable Thermogels written by Xian Jun Loh and published by Royal Society of Chemistry. This book was released on 2018-09-27 with total page 198 pages. Available in PDF, EPUB and Kindle. Book excerpt: Biodegradable thermogels are a promising class of stimuli-responsive polymers. This book summarizes recent developments in thermogel research with a focus on synthesis and self-assembly mechanisms, gel biodegradability, and applications for drug delivery, cell encapsulation and tissue engineering. A closing chapter on commercialisation shows the challenges faced bringing this new material to market. Edited by leading authorities on the subject, this book offers a comprehensive overview for academics and professionals across polymer science, materials science and biomedical and chemical engineering.
Download or read book Antioxidant Polymers written by Giuseppe Cirillo and published by John Wiley & Sons. This book was released on 2012-06-07 with total page 601 pages. Available in PDF, EPUB and Kindle. Book excerpt: Antioxidant Polymers is an exhaustive overview of the recent developments in the field of polymeric materials showing antioxidant properties. This research area has grown rapidly in the last decade because antioxidant polymers have wide industry applications ranging from materials science to biomedical, pharmaceuticals and cosmetics.
Download or read book Research Grants Index written by National Institutes of Health (U.S.). Division of Research Grants and published by . This book was released on 1970 with total page 1404 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Advances in Macromolecular Chemistry written by Wallace M. Pasika and published by . This book was released on 1968 with total page 278 pages. Available in PDF, EPUB and Kindle. Book excerpt:
