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Detailed 1D/2D NMR Analyses of Benzophenone‐Related Reaction Products from a Photopolymerization System of Vinyl Acetate and Benzophenone
Author(s) -
Kong Lingbing,
Deng Jianping,
Yang Wantai
Publication year - 2006
Publication title -
macromolecular chemistry and physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.57
H-Index - 112
eISSN - 1521-3935
pISSN - 1022-1352
DOI - 10.1002/macp.200600299
Subject(s) - benzophenone , vinyl acetate , photopolymer , chemistry , monomer , polymer chemistry , vinyl ether , ether , photochemistry , organic chemistry , polymer , copolymer
Summary: A new reaction system was designed in order to allow the reaction between benzophenone (BP) and poly(vinyl acetate) chain/radical or monomer to progress under UV irradiation with relatively constant intensity of absorbed light. After the reaction, most BP‐related products were successfully separated and were directly and particularly studied for the first time by a 600 MHz solution‐state NMR spectrometer. 13 C, 1 H, DEPT‐135, and 2D 1 H‐ 13 C HSQC, 1 H‐ 13 C HMBC NMR spectra were utilized for the analyses. In the mixed products, two new structures with new ether groups were detected and confirmed, besides detailed confirmation of benzopinacol and semi‐benzopinacol‐connected poly(vinyl acetate).Structures 1 and 2