Influence of lithium salt-induced phase separation on thermal behaviors of poly(vinylidene fluoride)/ionic liquid gels and pore/void formation by competition with crystallization.

ABSTRACT: The thermal behavior of poly(vinylidene fluoride)/1-ethyl-3-methylimidazolium bis(trifluoromethylsulfonyl)amide/lithium bis(trifluoromethylsulfonyl)amide (PVDF/[C₂mim][TFSA]/LiTFSA) gels, prepared by cooling from the hot solution, was investigated with various concentrations of LiTFSA (C _LiTFSA). The peak melting temperature (T _m) of the gels shifted toward higher temperatures with increased C _LiTFSA. However, the thickness of lamellar crystal was found to decrease with the increase in C _LiTFSA, which meant that the increase in T _m was not caused by the thickening of lamellar crystal. Furthermore, we found the appearance of domains above T _m in the high C _LiTFS

SUBMITTER: Osaka N 

PROVIDER: S-EPMC9091358 | biostudies-literature | 2018 Dec

REPOSITORIES: biostudies-literature