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Vitrimer. Vitrimer synthesis compound 2 Figure S2. Currently many researchers focus on the exploration of new chemistry for novel vitrimer synthesis but pay less attention to the fabrication of vitrimer composites based on known vitrimer systems. EVA vitrimer foams are firstly proposed and prepared by using thermal expansion microspheres as physical foaming agents and azodicarbonamide AC-9000 as chemical foaming agents respectively. Previous literature reports the Tv as one value influenced mainly by chemistry.
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Nevertheless the negative temperature coefficient NTC effect and poor repeatability severely limit their advanced applications. We suggest two strategies namely re-joining and re-foaming to address the recycling of foams. Currently many researchers focus on the exploration of new chemistry for novel vitrimer synthesis but pay less attention to the fabrication of vitrimer composites based on known vitrimer systems. Harnessing the synergistic effect of photonic crystals and. Vitrimer-like shape memory polymers SMPs combine the vitrimer-like behavior associated with dissociative covalent adaptable networks and SME and can be utilized to achieve many novel functions that are difficult to be realized by conventional polymers. EVA vitrimer foams are firstly proposed and prepared by using thermal expansion microspheres as physical foaming agents and azodicarbonamide AC-9000 as chemical foaming agents respectively.
These class of polymers are special as they have properties of both thermosets and thermoplastics.
Currently many researchers focus on the exploration of new chemistry for novel vitrimer synthesis but pay less attention to the fabrication of vitrimer composites based on known vitrimer systems. Vitrimers are one kind of covalently crosslinked polymers that can be reprocessed. Like thermosets vitrimers are highly crosslinked network polymers. First the vitrimer concept has to be applied to polymers with backbones solely made of carbon-carbon single bonds. Most of those salient features of a vitrimer originate from the existence of dynamic covalent bonds in the polymer network. We suggest two strategies namely re-joining and re-foaming to address the recycling of foams.
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Vitrimers hold great promise as adaptive materials capable of shape reconfigurability welding and self-healing due to dynamic covalent reactions occurring above the vitrimer transition temperature Tv. Vitrimer which is between thermoset and thermo-plastic is featured by the reversible cross-linking. Vitrimers hold great promise as adaptive materials capable of shape reconfigurability welding and self-healing due to dynamic covalent reactions occurring above the vitrimer transition temperature Tv. Vitrimers is a relatively new term 1 for a class of polymers that have existed for decades. Topology freezing transition temperature T v is vitrimers upper limit temperature for service and lower.
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Previous literature reports the Tv as one value influenced mainly by chemistry. Vitrimers are one kind of covalently crosslinked polymers that can be reprocessed. However their potential for function recovery especially optical function is underexplored. Vitrimer synthesis compound 2 Figure S2. Currently many researchers focus on the exploration of new chemistry for novel vitrimer synthesis but pay less attention to the fabrication of vitrimer composites based on known vitrimer systems.
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Vitrimers represent a new class of polymers based on dynamically exchangeable imine-linked polymer networks. Topology freezing transition temperature T v is vitrimers upper limit temperature for service and lower. Such polymers represent more than 75 of the 320 million tons of plastics produced each year. Smart polymeric materials based on the positive temperature coefficient PTC effect have been widely utilized. EVA vitrimer foams are firstly proposed and prepared by using thermal expansion microspheres as physical foaming agents and azodicarbonamide AC-9000 as chemical foaming agents respectively.
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Vitrimers hold great promise as adaptive materials capable of shape reconfigurability welding and self-healing due to dynamic covalent reactions occurring above the vitrimer transition temperature Tv. Today vitrimer is a hot topic in polymer material research because it not only has good mechanical properties but also can be repeatedly processed and recycled thus solving the problem that plastics have always been unfriendly to the environment. Vitrimer synthesis compound 2 Figure S2. Here for the first time vitrimers were exploited to fabricate smart nanocomposites with high PTC. Vitrimer-like shape memory polymers SMPs combine the vitrimer-like behavior associated with dissociative covalent adaptable networks and SME and can be utilized to achieve many novel functions that are difficult to be realized by conventional polymers.
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Topology freezing transition temperature T v is vitrimers upper limit temperature for service and lower. Vitrimer-like shape memory polymers SMPs combine the vitrimer-like behavior associated with dissociative covalent adaptable networks and SME and can be utilized to achieve many novel functions that are difficult to be realized by conventional polymers. Vitrimer the third category of polymer materials combines the properties of traditional thermosets and thermoplastics and has gained much interest from industry since the first report in 2011. Vitrimer composites address both of these challenges and improves the economics of CFRP part production by improving manufacturing cycle times by enabling consolidation and com-pression formingofprepregmaterialsinasinglestepforsub1-min cycles times. Most of those salient features of a vitrimer originate from the existence of dynamic covalent bonds in the polymer network.
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