Fabrizio Quadrini; Denise Bellisario; Giovanni Matteo Tedde; Loredana Santo
Abstract
Shape memory polymer composite (SMPC) samples for long-term exposure in Space environment have been designed and tested. SMPC laminates consisted of two carbon fiber reinforced (CFR) plies and a SMP interlayer. Samples were manufactured by prepreg lamination and molding with subsequent thermomechanical ...
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Shape memory polymer composite (SMPC) samples for long-term exposure in Space environment have been designed and tested. SMPC laminates consisted of two carbon fiber reinforced (CFR) plies and a SMP interlayer. Samples were manufactured by prepreg lamination and molding with subsequent thermomechanical processing for shape change. Commercial raw materials were selected both for CFR plies and SMP interlayer. Differential scanning calorimetry and dynamic mechanical analysis have been used to evaluate the thermo-mechanical behavior of the SMPC laminate in comparison with the neat CFR laminate and the SM epoxy resin of the interlayer. Results show that the hybrid nature of the SMPC laminate is responsible for their good shape memory behavior. A small disk with a simple shape change has been prepared to be integrated in the MISSE-FF platform for long-term exposure to Space environment. Recovery tests under IR light exposure highlighted the optimal functional behavior of this kind of sample. Copyright © VBRI Press.
Ashutosh Tiwari
Abstract
The Advanced Materials Series (AM series) published by Wiley-Scrivener Publishing, USA has comprised about 30 volumes till 2016. This series intends to provide recent advancements of the fascinating field of advanced materials science and technology, particularly in the area of structure, synthesis ...
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The Advanced Materials Series (AM series) published by Wiley-Scrivener Publishing, USA has comprised about 30 volumes till 2016. This series intends to provide recent advancements of the fascinating field of advanced materials science and technology, particularly in the area of structure, synthesis and processing, characterization, advanced-state properties and applications. The volumes cover theoretical and experimental approaches of molecular device materials, biomimetic materials, hybrid-type composite materials, functionalized polymers, supramolecular systems, information- and energy-transfer materials, bio based and biodegradable or environmental friendly materials. Each volume is devoted to one broad subject and the multi-disciplinary aspects are drawn out in full. Each volume is comprehensive and represents the cutting edge of science. They are written for a broad readership including researchers and students from diverse backgrounds including chemistry, physics, materials science & engineering, medical science, pharmacy, biotechnology and biomedical engineering.
Peter A. Lieberzeit; Sadia Bajwa; Ghulam Mustafa; Thipvaree Wangchareansak; Franz L. Dickert
Abstract
Materials science increasingly focuses on generating “smart”, i.e. highly functional, advanced matrices. Selective recognition can be implemented into man-made polymers by template-assisted synthesis. The method covers a surprising size range: it is possible to generate sensitivity and selectivity ...
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Materials science increasingly focuses on generating “smart”, i.e. highly functional, advanced matrices. Selective recognition can be implemented into man-made polymers by template-assisted synthesis. The method covers a surprising size range: it is possible to generate sensitivity and selectivity towards bivalent metal cations, such as Cu 2+ , in polyacrylate matrices. Despite the template being substantially smaller in size than the monomers, recognition can be achieved. Furthermore, acrylates can be templated with much larger species, such as influenza viruses. This leads to a nanostructured polymer surface that selectively re-binds the respective virion. Additional enhancement of sensitivity can be achieved by composite materials. Silver sulphide nanoparticles for instance show very appreciable affinity towards butanol vapors. When blending into butanol-imprinted polyurethane, the material incorporates three times more of the alcohol.
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