Background: Demand for healthy and safe food with minimal use of synthetic inputs (including synthetic preservatives) is increasing rapidly. Plastic polymers being hazardous to the environment, sig ...

Chitosan based nanocomposite films and coatings: Emerging antimicrobial food packaging alternatives

Hydrogels are formed when a three-dimensional polymeric network is loosely crosslinked. They are swollen by water but not dissolved in it. Hydrogels may display reversible sol–gel transitions, induced by changes in the environmental conditions such as temperature, pH, ionic strength, phase separation, wave length of light, crystallinity, etc. Hydrogel is described as smart or intelligent when sharp transition is induced by small change in such conditions. For the shape-memory hydrogels, reversible change in shape may also be induced by such stimuli. The preparation and applications of the molecularly imprinted polymeric hydrogels (MIPs) are illustrated by a few examples. The use of shape sensitive hydrogels in microfluidic is mentioned. Application of hydrogels for chronobiology and chronotherapy is outlined. The conversion of hydrogels into aerogels and their respective properties is discussed. Copyright © 2009 John Wiley & Sons, Ltd.

Polymeric gels and hydrogels for biomedical and pharmaceutical applications

Activated Ester Containing Polymers: Opportunities and Challenges for the Design of Functional Macromolecules

Polymeric hydrogels for novel contact lens-based ophthalmic drug delivery systems: A review

Thermoplastic elastomers are multi-functional polymeric materials that generally possess the processability of thermoplastics and the elasticity of vulcanized rubber. Intrinsic thermoplastic elastomers include microphase-separated block and segmented copolymers containing a soft (low- T g ) species. Recent achievements regarding thermoplastic elastomer block and segmented copolymers in the past year have improved the current understanding of (i) complex nanostructures in unary and multicomponent systems and (ii) the thermally-activated sphere→cylinder and cylinder→gyroid order–order transitions. The use of these materials in organogel, electro-responsive and nanocomposite applications illustrates the diversity and future potential of these technologically important materials.

Thermoplastic elastomers: fundamentals and applications

Synthesis and characterization of poly(methacrylic acid) hydrogels for metoclopramide delivery

Timolol maleate release from pH-sensible poly(2-hydroxyethyl methacrylate-co-methacrylic acid) hydrogels

Polycarbazole and its derivatives have been extensively used for the last three decades, although the interest in these materials briefly decreased. However, the increasing demand for conductive polymers for several applications such as light emitting diodes (OLEDs), capacitators or memory devices, among others, has renewed the interest in carbazole-based materials. In this review, the synthetic routes used for the development of carbazole-based polymers have been summarized, reviewing the main synthetic methodologies, namely chemical and electrochemical polymerization. In addition, the applications reported in the last decade for carbazole derivatives are analysed. The emergence of flexible and wearable electronic devices as a part of the internet of the things could be an important driving force to renew the interest on carbazole-based materials, being conductive polymers capable to respond adequately to requirement of these devices.

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Estíbaliz Hernáez

Papers

Synthesis and characterization of poly(methacrylic acid) hydrogels for metoclopramide delivery

Timolol maleate release from pH-sensible poly(2-hydroxyethyl methacrylate-co-methacrylic acid) hydrogels

Polycarbazole and Its Derivatives: Synthesis and Applications. A Review of the Last 10 Years.

Antibacterial multilayer of chitosan and (2-carboxyethyl)- β-cyclodextrin onto polylactic acid (PLLA)

pH-Sensitive microgels functionalized with folic acid