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Effects of poly(methyl methacrylate‐co‐ n ‐butyl acrylate) on the properties and processing behavior of poly(vinyl chloride)
Author(s) -
Lee YuDer,
Cheng KungChun
Publication year - 1985
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.1985.070300909
Subject(s) - copolymer , vinyl chloride , methyl methacrylate , materials science , ultimate tensile strength , acrylate , polymer chemistry , butyl acrylate , elongation , methyl acrylate , izod impact strength test , polyvinyl chloride , composite material , polymer
Random copolymers of methyl methacrylate/ n ‐butyl acrylate with a BA content of 0–50% and M̄ v = 0.16–4.04 × 10 6 were synthesized and evaluated as a processing aid (PA) for poly(vinyl chloride) (PVC). Their effects on the processability and properties of PVC were investigated with respect to the composition, molecular weight, and the amount of the copolymer added. It was found that the fusion rate of PVC could be improved (i) by increasing the amount of the copolymer used, (ii) by increasing the butyl acrylate content in the copolymer, and (iii) by lowering the molecular weight of the copolymer. The effect of molecular weight, composition, and amount of copolymer on the ultimate mechanical properties of PVC was investigated. The presence of copolymer did not affect the impact strength. However, the tensile strength and elongation at break were improved, particularly at high temperature (125°C). It was also found that the “plate out” phenomenon of PVC could be significantly reduced in the presence of the processing aid.