Results 41 to 50 of about 26,350 (192)
New research progress of vegetable oil-based polyurethanes
Journal of Hebei University of Science and Technology, 2016 This paper summarizes the latest progress for vegetable oil-based polyurethanes mainly from the view of thermoset and thermoplastic. Firstly, the modification methods for traditional thermoset polyurethane are introduced, including physical modification ...
Hongjie LIU +5 more
doaj +1 more source
Anti-Frothing Effect of Poultry Feathers in Bio-Based, Polycondensation-Type Thermoset Composites
Applied Sciences, 2020 The formation of polycondensation-type thermoset resins from natural reactants such as citric and glutaric acid, as well as 1,3-propanediol and glycerol, was studied. Monitoring the mass loss by thermogravimetric analysis (TGA) allowed the rate constants
Markus Brenner +2 more
doaj +1 more source
Upcycling of dynamic thiourea thermoset polymers by intrinsic chemical strengthening
Nature Communications, 2022 The ability to reprocess thermoset polymers has been demonstrated in principle, but is not widely done due to deteriorated performance of the reprocessed materials.
Haijun Feng +6 more
doaj +1 more source
Advanced Functional Materials, EarlyView.Microscale hydrogels (microgels) feature improved mass transport characteristics supportive of fast actuation and chemical tunability amenable to programmed stimuli response. A unique soft actuator architecture is realized by encapsulating microgels in soft microcirculatory systems which enable the convenient delivery of liquid stimuli for powering and
Nengjian Huang +2 more
wiley +1 more source
Molecules, 2019 Most of the current amine hardeners are petro-sourced and only a few studies have focused on the research of bio-based substitutes. Hence, in an eco-friendly context, our team proposed the design of bio-based amine monomers with aromatic structures. This
Anne-Sophie Mora +4 more
doaj +1 more source
Improving the mechanical recycling and reuse of mixed plastics and polymer composites [PDF]
, 2009 This is a post-print version of the chapter.In this chapter we will explore the possibilities and viability of commercially recycling and reusing of composites and mixed polymer based waste that is difficult and expensive to separate into individual ...
Tarverdi, K
core
Sustainable Catalyst‐Free PLG Networks: Recyclability, Biodegradability, and Functional Performance
Advanced Functional Materials, EarlyView.A catalyst‐additive free covalent adaptable network is developed from star‐shaped poly(lactide‐co‐glycolide) cross‐linked with pyromellitic dianhydride, enabling internal carboxylic acid‐driven transesterification. The resulting biodegradable network exhibits mechanical robustness (Young's modulus ≈1.6 GPa), complete recyclability, rapid biodegradation
Lars Schwarzer +2 more
wiley +1 more source
Surface Optimization of Micro-Integrated Reflective Optical Elements by Thermoset Injection Molding
Applied Sciences, 2020 Thermoset materials offer a multitude of advantageous properties in terms of shrinkage and warpage as well as mechanical, thermal and chemical stability compared to thermoplastic materials.
Thomas Guenther +7 more
doaj +1 more source
Novel Functional Materials via 3D Printing by Vat Photopolymerization
Advanced Functional Materials, EarlyView.This Perspective systematically analyzes strategies for incorporating functionalities into 3D‐printed materials via Vat Photopolymerization (VP). It explores the spectrum of achievable functionalities in recently reported novel materials—such as conductive, energy‐storing, biodegradable, stimuli‐responsive, self‐healing, shape‐memory, biomaterials, and
Sergey S. Nechausov +3 more
wiley +1 more source
Vitrimerization: A Novel Concept to Reprocess and Recycle Thermoset Waste via Dynamic Chemistry
Global Challenges, 2019 A new approach for reprocessing of existing thermoset waste is presented. This work demonstrates that unrecyclable thermoset materials can be reprocessed using the concept of associative dynamic bonding, vitrimers.
Liang Yue +5 more
doaj +1 more source