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Properties of PVC. II. Properties of PVC compounds with solvents

✍ Scribed by J. Maláč; V. Altmann; J. Zelinger

Publisher
John Wiley and Sons
Year
1970
Tongue
English
Weight
550 KB
Volume
14
Category
Article
ISSN
0021-8995

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✦ Synopsis

It was the aim of this paper to study the influence of the solvent residues in PVC compounds on physical and mechanical properties of samples prepared from them as well as the rheologic properties of their melts. Besides tetrahydrofuran other solvents are also partly retained in PVC even after processing at higher temperatures. The properties of samples prepared from PVC compounds containing solvents depend on the solubility parameter of the solvent used. Solvents with a solubility close to that of PVC have the same effect as plasticizers. Solvents with very high solubility parameters, e.g., water, influence the flow and dynamic properties in just the opposite way than plasticizen and behave rather like fillers. A mechanism for influencing the properties of PVC by the presence of solvent residues is suggested.

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