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Influences of diallyl phthalate as chain extender on the properties of high molecular weight poly(vinyl chloride) resin
Author(s) -
Wu Jianning,
Sui Baoxun,
Li Lei,
Meng Guihua,
Guo Xuhong,
Liu Zhiyong
Publication year - 2017
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.45093
Subject(s) - vinyl chloride , thermostability , suspension polymerization , copolymer , thermogravimetric analysis , polymer chemistry , phthalate , monomer , materials science , porosity , plasticizer , extender , chemical engineering , polyurethane , chemistry , polymer , composite material , organic chemistry , engineering , enzyme
A higher porosity with better thermostability is desirable for poly(vinyl chloride) (PVC) resin. In this study, high molecular weight PVC resins are prepared by vinyl chloride monomer (VCM)‐diallyl phthalate (DAP) suspension copolymerization in a 20‐L reactor at 50 °C using DAP as chain extender. SEM, BET, and analyses of plasticizer absorption results show the high molecular weight poly(vinyl chloride) (HPVC) by DAP‐VCM copolymerization is loose and porous. With increasing DAP content when the mass ratio of DAP/VCM (ω ) is below the gel point, the porosity and the degree of polymerization increase. Nevertheless, the bulk density and particle size decrease. When more than the gel point, these relationships are reversed. Thermogravimetric analysis revealed that the HPVC had better thermostability than that of commercial PVC, and its thermostability increases with increasing ω before it reaches the gel point. © 2017 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2017 , 134 , 45093.