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An investigation into the thermal stability of PVC/montmorillonite composites
Author(s) -
Zheng X.,
Gilbert M.
Publication year - 2011
Publication title -
journal of vinyl and additive technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.295
H-Index - 35
eISSN - 1548-0585
pISSN - 1083-5601
DOI - 10.1002/vnl.20258
Subject(s) - materials science , montmorillonite , thermal stability , phosphonium , epoxy , stabilizer (aeronautics) , composite material , degradation (telecommunications) , zinc , polyvinyl chloride , vinyl chloride , chemical engineering , polymer chemistry , polymer , metallurgy , mechanical engineering , telecommunications , copolymer , computer science , engineering
An effective stabilizing system for poly (vinyl chloride) (PVC)/clay composites was established. Different types of stabilizers, i.e., organotin, calcium/zinc, barium/zinc, and an epoxy costabilizer, were investigated. The combination of the organotin stabilizer and the epoxy costabilizer was the most effective stabilizing system. Different grades of Cloisite nanoclays were investigated. Cloisite Na did not cause premature degradation of PVC. Cloisite 10A strongly accelerated the degradation of PVC because of the presence of excess surfactant, while a PVC/Cloisite 30B system showed much better thermal stability because there was less organic impurity in the Cloisite 30B. Phosphonium‐modified clays were also prepared. They showed better thermal stability than ammonium‐modified clays, but the drying conditions still need to be optimized in order to produce a dispersible clay powder. J. VINYL ADDIT. TECHNOL., 2011. © 2011 Society of Plastics Engineers