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Polymer Micelles

Authors: --- --- ---
ISBN: 9783038428077 9783038428084 Year: Pages: VIII, 220 Language: English
Publisher: MDPI - Multidisciplinary Digital Publishing Institute
Subject: Biochemistry
Added to DOAB on : 2018-04-20 15:30:28
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Abstract

Classically, polymer micelles have been defined as aggregates formed by the self-association of amphiphilic polymers due to the hydrophobic interactions between polymer molecules in water. Practical applications of polymer micelles include as carriers in drug delivery systems, as solubilizers, and as associative thickeners. Polymer micelles that do not fall within the classical definition have recently been reported and reflect important developments in synthesis and analysis. For example, hydrophobic interactions are the classic force driving polymer association, whereas recently, micelles have been formed through interactions such as electrostatics, hydrogen bonds, and coordination bonds. Intermolecular association results in the formation of polymer micelles that are similar to micelles formed from low molecular weight surfactants, whereas unimolecular micelles formed by intramolecular association within a single polymer chain have also been reported, as have stimuli-responsive polymer micelles. It is therefore important to constantly update the information available and our knowledge of polymer micelles. This special issue covers synthesis, characterization, solution properties, association behavior, simulation, and the application of polymer micelles and polymer aggregates. The aim of this issue is to expand our knowledge of polymer micelles by gathering together the latest basic and applied information regarding these supramolecular structures.

Synthesis and Applications of Biopolymer Composites

Authors: ---
ISBN: 9783039211326 / 9783039211333 Year: Pages: 312 DOI: 10.3390/books978-3-03921-133-3 Language: eng
Publisher: MDPI - Multidisciplinary Digital Publishing Institute
Subject: Technology (General) --- Chemical Engineering
Added to DOAB on : 2019-08-28 11:21:27
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This book, as a collection of 17 research articles, provides a selection of the most recent advances in the synthesis, characterization, and applications of environmentally friendly and biodegradable biopolymer composites and nanocomposites. Recently, the demand has been growing for a clean and pollution-free environment and an evident target regarding the minimization of fossil fuel usage. Therefore, much attention has been focused on research to replace petroleum-based commodity plastics by biodegradable materials arising from biological and renewable resources. Biopolymers—polymers produced from natural sources either chemically from a biological material or biosynthesized by living organisms—are suitable alternatives for addressing these issues due to their outstanding properties, including good barrier performance, biodegradation ability, and low weight. However, they generally possess poor mechanical properties, a short fatigue life, low chemical resistance, poor long-term durability, and limited processing capability. In order to overcome these deficiencies, biopolymers can be reinforced with fillers or nanofillers (with at least one of their dimensions in the nanometer range). Bionanocomposites are advantageous for a wide range of applications, such as in medicine, pharmaceutics, cosmetics, food packaging, agriculture, forestry, electronics, transport, construction, and many more.

Keywords

nanocellulose --- protease sensor --- human neutrophil elastase --- peptide-cellulose conformation --- aerogel --- glycol chitosan --- ?-tocopherol succinate --- amphiphilic polymer --- micelles --- paclitaxel --- chitosan --- PVA --- nanofibers --- electrospinning --- nanocellulose --- carbon nanotubes --- nanocomposite --- conductivity --- surfactant --- Poly(propylene carbonate) --- thermoplastic polyurethane --- compatibility --- toughness --- biopolyester --- compatibilizer --- cellulose --- elastomer --- toughening --- biodisintegration --- heat deflection temperature --- biopolymers composites --- MgO whiskers --- PLLA --- in vitro degradation --- natural rubber --- plasticized starch --- polyfunctional monomers --- physical and mechanical properties --- cross-link density --- water uptake --- chitosan --- deoxycholic acid --- folic acid --- amphiphilic polymer --- micelles --- paclitaxel --- silk fibroin --- glass transition --- DMA --- FTIR --- stress-strain --- active packaging materials --- alginate films --- antimicrobial agents --- antioxidant activity --- biodegradable films --- essential oils --- polycarbonate --- thermal decomposition kinetics --- TG/FTIR --- Py-GC/MS --- wheat gluten --- potato protein --- chemical pre-treatment --- structural profile --- tensile properties --- biocomposites --- natural fibers --- poly(3-hydroxybutyrate-3-hydroxyvalerate) --- biodegradation --- impact properties --- chitin nanofibrils --- poly(lactic acid) --- nanocomposites --- bio-based polymers --- natural fibers --- biomass --- biocomposites --- fiber/matrix adhesion --- bio-composites --- mechanical properties --- poly(lactic acid) --- cellulose fibers --- n/a

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