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Copolymers of 3,3,3‐trifluoropropene and vinyl acetate: Synthesis, characterization, and hydrolysis
Author(s) -
Zhang Shuxiang,
Xu Anhou,
Geng Bing,
Xia Pandeng,
Chu Shanzhuang,
Liu Min
Publication year - 2007
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.25111
Subject(s) - copolymer , fourier transform infrared spectroscopy , differential scanning calorimetry , vinyl acetate , polymer chemistry , hydrolysis , mass fraction , materials science , mole fraction , chemistry , nuclear chemistry , chemical engineering , organic chemistry , polymer , physics , engineering , thermodynamics
Copolymers based on 3,3,3‐trifluoropropene (TFP) and vinyl acetate (VAc) were synthesized in supercritical carbon dioxide(scCO 2 ). The copolymers were characterized by Fourier transform infrared spectroscopy (FTIR), nuclear magnetic resonance (NMR), and differential scanning calorimetry (DSC) as the thermal analysis method. The copolymer compositions were estimated by three techniques: mass balance, NMR and electric potential analysis. The mole fraction of TFP in the copolymer increased with the feeding TFP added from 12.1% to 76.4% and almost unchanged with a feeding TFP increase from 76.4% to 89.7%. After partial carboxyl groups turned to hydroxyl groups by hydrolysis, the P(TFP‐ co ‐VAc) copolymer turned into terpolymers, P(TFP‐VAc‐VA). Dispersed in water, the hydrolyzed copolymer obtained emulsion by self‐emulsifying. The size distribution and the morphology of the latex were also investigated. © 2007 Wiley Periodicals, Inc. J Appl Polym Sci 2007