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Structure and properties of chlorinated polyvinyl chloride graft copolymer with higher property
Author(s) -
Xu Chao,
Wang Shuangshuang,
Shao Lu,
Zhao Jiruo,
Feng Ying
Publication year - 2012
Publication title -
polymers for advanced technologies
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.61
H-Index - 90
eISSN - 1099-1581
pISSN - 1042-7147
DOI - 10.1002/pat.1901
Subject(s) - chlorinated polyvinyl chloride , vicat softening point , materials science , copolymer , softening point , polymer chemistry , composite material , maleic anhydride , thermal stability , polyvinyl chloride , chemistry , organic chemistry , polymer
In this work, maleic anhydride (MAH) was grafted onto chlorinated polyvinyl chloride (CPVC) with high chlorine content (66 wt%) via in‐situ chlorinating graft copolymerization (ISCGC) to obtain the material with improved mechanical strength, softening point, and thermal stability of the material. The structure of the graft product (CPVC‐cg‐MAH) was characterized by FTIR, 1 H NMR, GPC, and UV. CPVC‐cg‐MAH contains less vinylidene chloride (CCl 2 ) units and double bond than corresponding CPVC. Meanwhile, the number–average molecular weight ( M n ) and weight–average molecular weight ( M w ) of CPVC‐cg‐MAH are increased, but distribution of molecular weight ( M w / M n ) is decreased. Then, the tensile strength and notched impact strength of CPVC‐cg‐MAH increased by 14.5 and 34.6%, respectively. Furthermore, the results of DMA, DSC, TG, and Vicat softening point showed that the loss peak of CPVC‐cg‐MAH was higher evidently than CPVC and moved to high temperature, the glass transition temperature ( T g ) of CPVC‐cg‐MAH was consistent with CPVC, initial weight loss temperature, and maximum weight loss rate temperature of CPVC‐cg‐MAH increased by 7.2°C and 6.1°C, respectively, and the Vicat softening temperature of CPVC‐cg‐MAH increased by 15°C and up to 130°C. Copyright © 2011 John Wiley & Sons, Ltd.