Results 81 to 90 of about 31,185 (305)
Green polyurethanes from bio-based building blocks: Recent advances and applications
Green Synthesis and CatalysisPolyurethanes (PUs) are among the most studied, manufactured, and employed polymers due to their versatility and wide range of applications. However, their synthesis generally relies on toxic, non-renewable, and harmful petroleum-based chemicals.
Filippo Campana +4 more
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Thermoplastic Polyurethane Blends With Thermal Energy Storage/Release Capability
Frontiers in Materials, 2018 In this work innovative thermal energy storage materials were developed by encapsulating a paraffin having a melting temperature of 6°C (M6D) in a thermoplastic polyurethane (TPU), and the most important physical properties of the resulting samples were ...
Andrea Dorigato +2 more
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Improved Lignin Polyurethane Properties with Lewis Acid Treatment [PDF]
, 2012 Chemical modification strategies to improve the mechanical properties of lignin-based polyurethanes are presented. We hypothesized that treatment of lignin with Lewis acids would increase the concentration of hydroxyl groups available to react with ...
Chung, Hoyong, Washburn, Newell R.
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Actuating and Sensing Composites of Liquid Crystal Elastomers and Poly(ionic liquid)s
Advanced Functional Materials, EarlyView.Ionic conductive, mechanically tough, flexible, and stretchable filaments of a composite material comprising a liquid crystal elastomer and a poly(ionic liquid) are produced through 3D printing, which exhibit large actuation strain under stimulation and electrical resistance variation in response to deformation or environmental condition changes. Their
Zeping Liu +6 more
wiley +1 more source
Flame resistant elastic elastomeric fiber [PDF]
, 1974 Compositions exhibit elastomeric properties and possess various degrees of flame resistance. First material polyurethane, incorporates halogen containing polyol and is flame resistant in air; second contains spandex elastomer with flame retardant ...
Howarth, J. T. +3 more
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Advanced Functional Materials, EarlyView.Bioprosthetic aortic valves have revolutionized the treatment of aortic stenosis, but their durability is limited by structural valve deterioration (SVD). This review focuses on the pericardial tissue at the heart of these valves, examining how its mechanical properties and calcification drive fatigue and failure.
Gabriele Greco +7 more
wiley +1 more source
Macromolecular Materials and EngineeringPolyurethane (PU) is one of the most commonly used plastics, typically synthesized from diisocyanates and polyols derived from non‐renewable or unsustainable sources.
Manuel Burelo +8 more
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Biomaterial based novel polyurethane adhesives for wood to wood and metal to metal bonding
Materials Research, 2009 Polyurethane adhesives made from synthetic chemicals are non-biodegradable, costly and difficult to find raw materials from local market. To avoid solid pollution problem, cost effectiveness and easy availability of raw materials, biomaterials based ...
Mitesh Ramanlal Patel +3 more
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Advanced Functional Materials, EarlyView.ABSTRACT Breathable membranes that reject chemical warfare agents (CWAs) are required for next‐generation protective apparel. A dual‐function graphene oxide (GO)‐polyamine architecture is introduced that addresses the long‐standing tradeoff between vapor transmission and CWA selectivity.
Hyungjun Kim +6 more
wiley +1 more source
Effects of Molecular Designs and Double‐Network Morphologies for Bioadhesive Semiconductors
Advanced Functional Materials, EarlyView.This study establishes molecular‐to‐mesoscale design rules for bioadhesive semiconducting polymers (BASCs). It identifies how side‐chain length, double‐network formation, and film thickness modulate adhesion strength and electronic performance, providing insight into the rational design of intrinsically adhesive semiconductors for stable and efficient ...
Zhichang Liu +8 more
wiley +1 more source