[PDF] Synthesis And Application Of Well Defined Stimuli Responsive Materials eBook

Author : Quan Li
Publisher : John Wiley & Sons
Page : 642 pages
File Size : 12,99 MB
Release : 2013-09-03
Category : Technology & Engineering
ISBN : 1118680499

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There has been concerted effort across scientific disciplines to develop artificial materials and systems that can help researchers understand natural stimuli-responsive activities. With its up-to-date coverage on intelligent stimuli-responsive materials, Intelligent Stimuli-Responsive Materials provides research, industry, and academia professionals with the fundamentals and principles of intelligent stimuli-responsive materials, with a focus on methods and applications. Emphasizing nanostructures and applications for a broad range of fields, each chapter comprehensively covers a different stimuli-responsive material and discusses its developments, advances, challenges, analytical techniques, and applications.

Author : Marek W Urban
Publisher : Royal Society of Chemistry
Page : 488 pages
File Size : 31,57 MB
Release : 2019-03-15
Category : Science
ISBN : 1788018095

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The ability for a material to change properties in response to external stimuli is an attractive feature for numerous applications and as such stimuli responsive materials are gaining attention across many different fields. This book introduces the concepts of stimuli-responsiveness, including the fundamental materials properties required for design. It provides readers with comprehensive scientific principles and developments of stimuli responsive materials, as well as the recent technological advances. Written by a renowned expert in the field, this book is suitable for anyone interested in stimuli responsive materials working in polymers, biochemistry, biotechnology and materials science.

Author : Andrea Cusano
Publisher : Springer
Page : 377 pages
File Size : 36,99 MB
Release : 2014-07-29
Category : Science
ISBN : 3319069985

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This book focuses on a research field that is rapidly emerging as one of the most promising ones for the global optics and photonics community: the “lab-on-fiber” technology. Inspired by the well-established "lab on-a-chip" concept, this new technology essentially envisages novel and highly functionalized devices completely integrated into a single optical fiber for both communication and sensing applications. Based on the R&D experience of some of the world's leading authorities in the fields of optics, photonics, nanotechnology, and material science, this book provides a broad and accurate description of the main developments and achievements in the lab-on-fiber technology roadmap, also highlighting the new perspectives and challenges to be faced. This book is essential for scientists interested in the cutting-edge fiber optic technology, but also for graduate students.

Author : Abdel Salam Hamdy Makhlouf
Publisher : Woodhead Publishing
Page : 694 pages
File Size : 38,51 MB
Release : 2018-06-14
Category : Technology & Engineering
ISBN : 008101998X

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Stimuli Responsive Polymeric Nanocarriers for Drug Delivery Applications, Volume One: Types and Triggers discusses, in detail, the recent trends in designing biodegradable and biocompatible single-responsive polymers and nanoparticles for safe drug delivery. Focusing on the most advanced materials and technologies, evaluation methods, and advanced synthesis techniques stimuli-responsive polymers, the book is an essential reference for scientists with an interest in drug delivery vehicles. Sections focus on innovation, development and the increased global demand for biodegradable and biocompatible responsive polymers and nanoparticles for safe drug delivery. Offers an in-depth look at the basic and fundamental aspects of alternative stimuli-responsive polymers, mechanisms, structure, synthesis and properties Provides a well-defined categorization for stimuli-responsive polymers for drug delivery based on different triggering mechanisms Discusses novel approaches and challenges for scaling up and commercialization of stimuli-responsive polymers

Author : Turgay Yildirim
Publisher :
Page : pages
File Size : 24,51 MB
Release : 2017
Category :
ISBN :

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Stimuli-responsive polymeric nanoparticles have recently gained tremendous attention, in particular in the field of controlled drug delivery as a result of offering prolonged circulation times and on demand delivery. The tailor-made design of stimuli-responsive nanoparticles mostly relies on the incorporation of desired stimuli-responsive motifs into the polymers. However, the challenge is to synthesize the corresponding polymers in a well-defined and reproducible way. In the context of the synthesis of stimuli-responsive polymers, the reversible addition fragmentation chain transfer (RAFT) polymerization process is advantageous compared to other techniques due to its high tolerance to various functional groups and polymerization conditions. After the synthesis of the stimuli responsive polymers, it is also crucial to formulate the resulting stimuli-responsive nanoparticles in a controlled way. Nanoprecipitation represents a facile and reliable way to produce polymeric nanoparticles. As a result, the RAFT polymerization process and the nanoprecipitation technique were selected as the methods of choice within this thesis for the synthesis of (multi)functional polymers and the formation of the corresponding nanoparticles. The presented thesis represents an overview of (i) the synthesis of various new stimuli-responsive polymers with tailor-made functionalities and polymer structures, (ii) the formulation of stimuli-responsive nanoparticles via nanoprecipitation, (iii) the investigation of stimuli-responsive behavior of the nanoparticles, as well as (iv) the evaluation of synthesized nanoparticles for drug delivery applications.

Author : Maria Rosa Aguilar
Publisher : Elsevier
Page : 587 pages
File Size : 44,35 MB
Release : 2014-02-19
Category : Technology & Engineering
ISBN : 0857097024

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Smart polymers are polymers that respond to different stimuli or changes in the environment. Smart Polymers and their Applications reviews the types, synthesis, properties, and applications of smart polymers. Chapters in part one focus on types of polymers, including temperature-, pH-, photo-, and enzyme-responsive polymers. Shape memory polymers, smart polymer hydrogels, and self-healing polymer systems are also explored. Part two highlights applications of smart polymers, including smart instructive polymer substrates for tissue engineering; smart polymer nanocarriers for drug delivery; the use of smart polymers in medical devices for minimally invasive surgery, diagnosis, and other applications; and smart polymers for bioseparation and other biotechnology applications. Further chapters discuss the use of smart polymers for textile and packaging applications, and for optical data storage. Smart Polymers and their Applications is a technical resource for chemists, chemical engineers, mechanical engineers, and other professionals in the polymer industry; manufacturers in such sectors as medical, automotive, and aerospace engineering; and academic researchers in polymer science. Reviews the different types of smart polymer, discussing their properties, structure, design, and characterization Reviews applications of smart polymers in such areas as biomedical engineering, textiles, and food packaging

Author : Takeshi Kawai
Publisher : Springer
Page : 308 pages
File Size : 43,25 MB
Release : 2016-11-17
Category : Technology & Engineering
ISBN : 9811024634

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This book introduces recent progress in stimuli-responsive interfaces constructed on colloidal materials such as micelles and vesicles and on solid material surfaces. There is discussion of the effect of stimuli such as light, heat, pH, and electric field on changes in the morphology of the molecules at the interfaces and that of colloidal materials. The changes in the properties, such as gelation ability, dispersibility, and emulsification ability, of the resultant bulk materials containing these colloidal materials or those of the solid material are also covered. In addition, design criteria for high sensitivity, quick responsiveness, and high reversibility are presented. In each author’s original system, the correlations between molecular-level responses and bulk functional responses are described as well. This book serves as an excellent guide to designing and fabricating novel, functional, eco-friendly stimuli-responsive interfaces and related materials.

Author : Nazario Martín
Publisher : John Wiley & Sons
Page : 332 pages
File Size : 35,89 MB
Release : 2009-08-14
Category : Science
ISBN : 9783527628759

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Written by an outstanding team of experts in the interdisciplinary areas of research, this book is based on a new classification of the different types of fullerene polymers according to their chemical structures. It covers all aspects, from different classes, to their synthesis and applications in material science. Of great interest to polymer and synthetic chemists, but also for material scientists and industrial chemists.

Author : Chi Zhang
Publisher :
Page : pages
File Size : 36,85 MB
Release : 2014
Category :
ISBN :

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"Stimuli-responsive polymers have been touted as "smart" due to their fast and reversible responses to environmental changes. It is imperative for these polymers to have well-defined structures so that their performance can be consistent and predictable. In order to achieve this, nitroxide mediated polymerization (NMP) was employed as the synthesis technique for the microstructured polymers that form the core of the investigations presented in this thesis. As one of the main controlled radical polymerization techniques, NMP stands out for its simplicity in both required ingredients and purification procedures. Many known stimuli-responsive polymers are poly(methacrylates). However, homopolymerization of methacrylates has been challenging for NMP mainly due to the large equilibrium constant that resulted in high concentration of active radicals and thus excessive irreversible terminations. By using a small amount of "controlling co-monomer" such as styrene, copolymerizations with methacrylate-rich feeds can be controlled using the commercially available alkoxyamine initiator BlocBuilderTM via NMP, featuring linear increases in number average molecular weight versus conversion, and narrow molecular weight distribution.In this thesis, two methacrylates, namely 2-(dimethylamino)ethyl methacrylate (DMAEMA) and benzyl methacrylate (BzMA), whose homopolymers exhibit LCST-type phase separation behaviours in aqueous and ionic liquid (IL) solutions, respectively, were copolymerized with various controlling co-monomers by NMP to demonstrate the versatility of NMP in tuning thermo-responsive properties. For both methacrylates, styrene was initially used as the controlling co-monomer to obtain copolymers with relatively narrow molecular weight distribution and ability to extend chains to form block copolymers when reinitiated with a fresh batch of monomer. 2-Vinylpyridine (2VP) was then chosen to copolymerize with DMAEMA for its lower hydrophobicity compared to styrene and pH-sensitivity, where about 2 - 5 mol% 2VP was shown sufficient to obtain well-defined DMAEMA/2VP copolymers. The detailed phase behaviour characterization of these DMAEMA-rich copolymers in aqueous solutions revealed the effects of important factors such as pH, copolymer composition, solution concentration and polymer microstructure, on the tuning of transition temperatures.For BzMA, 9-(4-vinylbenzyl)-9H-carbazole (VBK) was used as an alternative controlling co-monomer. Controlled and pseudo-"living" copolymerizations were achieved with as little as 2 mol% VBK in the feed, demonstrating significant improvement compared to the BzMA/styrene system. The incorporation of fluorescent VBK resulted in 5-fold fluorescence enhancement during the phase separation of BzMA/VBK copolymers from IL [C2mim][NTf2]. The enhancement resulted from heightened efficiency of the fluorescence resonance energy transfer (FRET) between BzMA and VBK during aggregation. However, the solvatophobicity of VBK also significantly reduced the solubility of BzMA/VBK copolymers in the IL and rendered the phase separation irreversible. Further investigation on the effects of solvatophilicity and chain mobility on phase separation and reversibility in ILs was carried out by incorporating varying amounts of solvatophilic co-monomer, namely methyl methacrylate (MMA) and oligo(ethylene glycol) methacrylate (OEGMA), yielding BzMA/MMA/VBK and BzMA/OEGMA/VBK terpolymers. It was found that molecular weight, glass transition temperature, and solution concentration all played important roles on phase separation temperature but sufficiently high solvatophilicity (quantified by the concentration of solvatophilic group) was essential to facilitate the re-dissolution process after phase separation. " --