Influences of diallyl phthalate as chain extender on the properties of high molecular weight poly(vinyl chloride) resin |
| |
| Authors: | Lei Li Guihua Meng Xuhong Guo Zhiyong Liu |
| |
| Affiliation: | School of Chemistry and Chemical Engineering, Shihezi University/Key Laboratory for Green Processing of Chemical Engineering of Xinjiang Bingtuan/Key Laboratory of Materials‐Oriented Chemical Engineering of Xinjiang Uygur Autonomous Region/Engineering Research Center of Materials‐Oriented Chemical Engineering of Xinjiang Bingtuan, Shihezi, Xinjiang, People's Republic of China |
| |
| Abstract: | 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. |
| |
| Keywords: | poly(vinyl chloride) synthesis and processing techniques thermal properties |
|
|
