Design and Precise Synthesis of Thermoresponsive Polyacrylamides PDF Download

Author: Keita Fuchise
Publisher: Springer
ISBN: 4431550461
Category : Technology & Engineering
Languages : en
Pages : 94

View

Book Description
In this thesis, the author describes versatile and easy-to-use methods to control the properties of thermoresponsive polyacrylamides by developing novel synthetic methods for end-functionalized poly(N-isopropylacrylamide) (PNIPAM) and block copolymers of poly(N,N-diethylacrylamide) (PDEAA). The synthesis of various urea end-functionalized PNIPAMs was achieved by the atom transfer radical polymerization (ATRP) and the click reaction. The phase transition temperature of PNIPAM in water was controlled depending on the strength of the hydrogen bonding of the urea groups introduced at the chain end of the polymer. Novel living polymerization methods for N,N-dimethylacrylamide and N,N-diethylacrylamide were developed by group transfer polymerization (GTP) using a strong Brønsted acid as a precatalyst and an amino silyl enolate as an initiator. This process enabled the precise synthesis of PDEAA and its block copolymers—namely, thermoresponsive amphiphilic block copolymers and double-hydrophilic block copolymers.

Author: Costas S Patrickios
Publisher: Royal Society of Chemistry
ISBN: 1839161345
Category : Science
Languages : en
Pages : 347

View

Book Description
Amphiphilic polymer co-networks (APCNs) are a type of polymeric hydrogel, their hydrophobic polymer segments and hydrophilic components produce less aqueous swelling, giving better mechanical properties than conventional hydrogels. This new class of polymers is attracting increasing attention, resulting in further basic research on the system, as well as new applications. This book focuses on new developments in the field of APCNs, and is organised in four sections: synthesis, properties, applications and modelling. Co-network architectures included in the book chapters are mainly those deriving from hydrophobic macro-cross-linkers, representing the classical approach; however, more modern designs are also presented. Properties of interest discussed include aqueous swelling, thermophysical and mechanical properties, self-assembly, electrical actuation, and protein adsorption. Applications described in the book chapters include the use of co-networks as soft contact lenses, scaffolds for drug delivery and tissue engineering, matrices for heterogeneous biocatalysis, and membranes of controllable permeability. Finally, an important theory chapter on the modelling of the self-assembly of APCNs is also included. The book is suitable for graduate students and researchers interested in hydrogels, polymer networks, polymer chemistry, block copolymers, self-assembly and nanomaterials, as well as their applications in contact lenses, drug delivery, tissue engineering, membranes and biocatalysis.

Author: Johnathan Zhang
Publisher: Woodhead Publishing
ISBN: 9780857097132
Category : Technology & Engineering
Languages : en
Pages : 0

View

Book Description
Surface modification of biomaterials can ultimately determine whether a material is accepted or rejected from the human body, and a responsive surface can further make the material "smart" and "intelligent". Switchable and Responsive Surfaces and Materials for Biomedical Applications outlines synthetic and biological materials that are responsive under different stimuli, their surface design and modification techniques, and applicability in regenerative medicine/tissue engineering, drug delivery, medical devices, and biomedical diagnostics. Part one provides a detailed overview of switchable and responsive materials and surfaces, exploring thermo-responsive polymers, environmentally responsive polyelectrolytes and zwitterionic polymers, as well as peptide-based and photonic sensitive switchable materials. Further chapters include a detailed overview of the preparation and analysis of switchable polymer brushes and copolymers for biomedical application. Part two explores the biological interactions and biomedical applications of switchable surfaces, where expert analysis is provided on the interaction of switchable surfaces with proteins and cells. The interaction of stimuli-sensitive polymers for tissue engineering and drug delivery with biosurfaces is critiqued, whilst the editor provides a skillful study into the application of responsive polymers in implantable medical devices and biosensors.

Author: Showkat Ahmad Bhawani
Publisher: Woodhead Publishing
ISBN: 0128204354
Category : Technology & Engineering
Languages : en
Pages : 484

View

Book Description
Smart Polymer Nanocomposites: Biomedical and Environmental Applications presents the latest information on smart polymers and their promising application in various fields, including their role in delivery systems for drugs, tissue engineering scaffolds, cell culture sports, bioseparation, and sensors or actuator systems. - Features detailed information on the preparation, characterization and applications of smart functional polymer composites - Covers a broad range of applications in both the biomedical and environmental engineering fields - Chapters are written by authors with diverse background expertise from the faculties of chemistry, engineering and the manufacturing industry

Author: Chris D. Geddes
Publisher: Springer
ISBN: 3319246097
Category : Medical
Languages : en
Pages : 380

View

Book Description
Reviews in Fluorescence 2015, the eighth volume of the book serial from Springer, serves as a comprehensive collection of current trends and emerging hot topics in the field of fluorescence and closely related disciplines. It summarizes the year’s progress in fluorescence and its applications, with authoritative reviews specialized enough to be attractive to professional researchers, yet also appealing to the wider audience of scientists in related disciplines of fluorescence. Reviews in Fluorescence offers an essential reference material for any research lab or company working in the fluorescence field and related areas. All academics, bench scientists, and industry professionals wishing to take advantage of the latest and greatest in the continuously emerging field of fluorescence will find it an invaluable resource.

Author: Wolfgang H. Binder
Publisher: John Wiley & Sons
ISBN: 3527670203
Category : Technology & Engineering
Languages : en
Pages : 638

View

Book Description
Self-healing is a well-known phenomenon in nature: a broken bone merges after some time and if skin is damaged, the wound will stop bleeding and heals again. This concept can be mimicked in order to create polymeric materials with the ability to regenerate after they have suffered degradation or wear. Already realized applications are used in aerospace engineering, and current research in this fascinating field shows how different self-healing mechanisms proven successful by nature can be adapted to produce even more versatile materials. The book combines the knowledge of an international panel of experts in the field and provides the reader with chemical and physical concepts for self-healing polymers, including aspects of biomimetic processes of healing in nature. It shows how to design self-healing polymers and explains the dynamics in these systems. Different self-healing concepts such as encapsulated systems and supramolecular systems are detailed. Chapters on analysis and friction detection in self-healing polymers and on applications round off the book.

Author: Graeme Moad
Publisher: John Wiley & Sons
ISBN: 3527344950
Category : Science
Languages : en
Pages : 1283

View

Book Description
Explore this one-stop resource for reversible addition-fragmentation chain transfer polymerization from a leading voice in chemistry RAFT Polymerization: Methods, Synthesis and Applications delivers a comprehensive and insightful analysis of reversible addition-fragmentation chain transfer polymerization (RAFT) and its applications to fields as diverse as material science, industrial chemistry, and medicine. This one-stop resource offers readers a detailed synopsis of the current state of RAFT polymerization. This text will inspire further research and continue the drive to an ever-increasing range of applications by synthesizing and explaining the more central existing literature on RAFT polymerization. It contains a beginner’s guide on how to do a RAFT polymerization before moving on to much more advanced techniques and concepts, like the kinetics and mechanisms of the RAFT process. The distinguished editors have also included resources covering the four major classes of RAFT agents and recent developments in processes for initiating RAFT polymerization. Readers will also benefit from the inclusion of: A thorough introduction to the mechanisms, theory, and mathematical modeling of RAFT Explorations of RAFT agent design and synthesis, dithioesters, dithiobenzoates, trithiocarbonates, xanthates, dithiocarbamates, macromonomer RAFT, and RAFT copolymerization Discussions of a variety of RAFT architectures, including multiblocks, combs, hyperbranched polymers, and stars Treatments of end group transformation, cationic RAFT, high-throughput RAFT, and RAFT in continuous flow An examination of sequence defined polymers by RAFT Perfect for organic chemists, polymer chemists, and materials scientists, RAFT Polymerization: Methods, Synthesis and Applications will also earn a place in the libraries of chemical engineers seeking a one-stop reference for this method of controlled radical polymerization with a wide range of applications in multiple areas.

Author: Kunal Pal
Publisher: Woodhead Publishing
ISBN: 0081021801
Category : Technology & Engineering
Languages : en
Pages : 570

View

Book Description
Polymeric Gels: Characterization, Properties and Biomedical Applications covers the fundamentals and applications of polymeric gels. Particular emphasis is given to their synthesis, properties and characteristics, with topics such as natural, synthetic, and smart polymeric gels, medical applications, and advancements in conductive and magnetic gels presented. The book covers the basics and applications of hydrogels, providing readers with a comprehensive guide on the types of polymeric gels used in the field of biomedical engineering. - Provides guidance for decisions on the suitability and appropriateness of a synthetic route and characterization technique for particular polymeric networks - Analyzes and compares experimental data - Presents in-depth information on the physical properties of polymeric gels using mathematical models - Uses an interdisciplinary approach to discuss potential new applications for both established polymeric gels and recent advances

Author: Maria Rosa Aguilar
Publisher: Woodhead Publishing
ISBN: 0081024177
Category : Technology & Engineering
Languages : en
Pages : 704

View

Book Description
Smart Polymers and Their Applications, Second Edition presents an up-to-date resource of information on the synthesis and properties of different types of smart polymers, including temperature, pH, electro, magnetic and photo-responsive polymers, amongst others. It is an ideal introduction to this field, as well as a review of the latest research in this area. Shape memory polymers, smart polymer hydrogels, and self-healing polymer systems are also explored. In addition, a very strong focus on applications of smart polymers is included for tissue engineering, smart polymer nanocarriers for drug delivery, and the use of smart polymers in medical devices. Additionally, the book covers the use of smart polymers for textile applications, packaging, energy storage, optical data storage, environmental protection, and more. This book is an ideal, technical resource for chemists, chemical engineers, materials scientists, mechanical engineers and other professionals in a range of industries. - Includes a significant number of new chapters on smart polymer materials development, as well as new applications development in energy storage, sensors and devices, and environmental protection - Provides a multidisciplinary approach to the development of responsive polymers, approaching the subject by the different types of polymer (e.g. temperature-responsive) and its range of applications

Author: Vimal Katiyar
Publisher: Springer Nature
ISBN: 9811512515
Category : Technology & Engineering
Languages : en
Pages : 421

View

Book Description
This book discusses synthesis and characterization of sustainable polymers. The book covers opportunities and challenges of using sustainable polymers to replace existing petroleum based feedstock. This volume provides insights into the chemistry of polymerization, and discusses tailoring the properties of the polymers at the source in order fit requirements of specific applications. The book also covers processing of these polymers and their critical assessment. The book will be of use to chemists and engineers in the industry and academia working on sustainable polymers and their commercialization to replace dependence on petroleum-based polymers.