Abstract:The Copolymerization reaction of hexafluoroisobutylene (HFIB) and vinylidene fluoride (VF2) was studied using X‐band electron spin resonance (ESR) by applying a photo‐in situ method. Owing to the toxicity of HFIB monomer, the flow ESR method could not be directly applied without extensive modification. The observed ESR signal with 21‐line hyperfine structure was assigned to the copolymer radical with head‐to‐head configuration. Although the HFIB monomer radical possesses the same hyperfine pattern, the ambigui… Show more
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