WebJan 16, 2024 · Abstract. Bio-based polyols derived from vegetable oils generally contain the dangling chains, which have recently attracted significant attention due to their … WebTopological defects such as cyclic loops and dangling chains are ubiquitous in polymer networks. While fracture is a dominant mechanism for mechanical failures of polymer …
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WebMar 19, 2024 · In this viewpoint, we attempt to discuss some of the remaining open questions and corresponding concepts: non-equilibrated polymers, self-induced nucleation, microscopic kinetics of different... WebThe relative numbers of dangling chains in these predominantly tetrafunctional networks were directly determined by iodometric titration for unreacted vinyl groups. 11,12 The six samples available for investigation had values of the wt % dangling chains of 0.0, 4.7, 23.5, 29.4, 36.2, and 41 .l.S east end country kitchens westhampton
Influence of Dangling Chains on Molecular Dynamics of Polyurethanes ...
WebJun 2, 2024 · While oxygen is known to react with active radicals, cross-linking is more susceptible to oxygen than chain propagation, since to be effective, two radicals need to be formed on the cross-linking species. Therefore, hydrogel surfaces formed in the presence of oxygen have a low level of cross-linking and thus consist of dangling chain ends, Fig. 1a. WebJun 26, 2010 · In polymer gel swollen by a compatible solvent, dangling chains are extended into solvent occupied domains. As was shown by Krongauz and co-workers [6, 50–53] and confirmed by Kumar and co-workers [54, 55], in plasticized polymer matrix the dangling chains align along the direction of molecular diffusion. Thus, during solvent … Webdangling chain is another way to call branches, they are chains suspended laterally to the main backbone. Generally speaking it always related to the hysteresis of a polymeric … cubos led pinterest