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Processability of PVC plastisols containing a polyhydroxybutyrate‐polyhydroxyvalerate copolymer
Author(s) -
GarciaQuesada Juan Carlos,
Pelaez Ivan,
Akin Okan,
Kocabas Irmak
Publication year - 2012
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.20293
Subject(s) - biopolymer , materials science , ultimate tensile strength , polyvinyl chloride , composite material , miscibility , polyhydroxyalkanoates , molding (decorative) , polymer , vinyl chloride , elongation , compression molding , plasticizer , viscosity , copolymer , mold , biology , genetics , bacteria
Plastisols based on polyvinyl chloride (PVC) can be processed by different techniques; their processability markedly depends on their flow properties and gelation/fusion processes. Classically, PVC has been the only polymer present in plastisol formulations. The present work explored the possibility of adding polyhydroxyalkanoates (PHAs), a type of biopolymer that, according to previous work, exhibits a good miscibility with PVC processed by other techniques (internal mixer and compression molding). The influence of PHA particles on flow properties, gelation‐fusion processes, tensile strength, hardness, and processability by rotomolding was evaluated. Although the biopolymer markedly increased the viscosity of PVC plastisols and caused a decrease in tensile strength in processed specimens, formulations including 20% by weight of biopolymer presented a good thickness distribution in rotomolded items, an elongation at break of around 300%, and an ultimate tensile strength of around 6–7 MPa. J. VINYL ADDIT. TECHNOL.,, 2012. © 2012 Society of Plastics Engineers