WebJul 7, 2024 · Swelling and degradation of VMP and VHP bio-based imine epoxy vitrimers The swelling experiment was conducted by immersing the cross-linked epoxy resins in different solvents. After 24 h, the swollen samples were taken out, the surface solvent was wiped dry and weighed. Calculated the swelling ratio (SR) according to formula (1) [ 47 ]. WebSep 1, 2024 · The nature of the bond exchange enables vitrimers to retain their modulus upon heating 32,33. If we consider the boric esters as the treated healing agent, their length scale approaches ~1 Å.
Recycling of vitrimer blends with tunable thermomechanical properties
WebDec 19, 2024 · Young's modulus (MPa) Toughness (MJ m −3) Healing conditions Healing efficiency (%) ... plastics being difficult to recycle. In order to solve this problem, researchers have developed HTPB-based PU vitrimers with disulfide bonds ... and extremely high Young's modulus (81.8 MPa) due to the abundant interfacial hydrogen bonds between … WebApr 7, 2024 · Vitrimers consist of a polymer network that is able to change its topology without decreasing its connectivity thanks to exchange reactions, which maintain … pm kisan yojana list 2022 gujarat
Polyurethane vitrimers: Chemistry, properties and applications
WebRosin side chain type catalyst-free vitrimers with high cross-link density, mechanical strength, and thermal stability: Yunpeng Shen 1, Weishan Tang 1, Jinyang Li 1, Zhijun Ke 1, Lirong Liao 1, Peng Yang 1, Yuntao Lu 1, Xiaoping Rao 1, 2 (): 1.College of Chemical Engineering, Huaqiao University, Xiamen 361021, China 2.Academy of Advanced Carbon … WebPMMA vitrimers with different structural parameters : mass average molar mass, functionality, and cross-linking density.V1, 26 kg/mol, 23 mol %, 2.2 weight % (wt %); V3, … WebMar 4, 2024 · The Young’s modulus was then compared with the theoretical value considering the molecular weight between the pyridine units. According to the phantom … pm kisan yojana list status