polymerjournals Chemistry, materials, technology
Polymers and Polymer Composites

DIPSERSIBILITY OF MACROMOLECULAR POLYOLS AS CO-STABILIZER IN POLY(VINYL CHLORIDE) AND THEIR STABILIZATION EFFECT COMBINED WITH SYNERGETIC METAL SOAP

August 1, 2003 By: Ikeda H; Ishikawa M; Nakamura Y; Iida T Research article

Title: DIPSERSIBILITY OF MACROMOLECULAR POLYOLS AS CO-STABILIZER IN POLY(VINYL CHLORIDE) AND THEIR STABILIZATION EFFECT COMBINED WITH SYNERGETIC METAL SOAP
Page Range: p.649-662
Author(s): Ikeda H; Ishikawa M; Nakamura Y; Iida T
File size: 200K
Download the pdf (subscribers only)
Buy the pdf (non-subscribers)
Journal: Polymers and Polymer Composites
Issue Year: ppc
Volume: 11
Issue No: No. 8

Abstract
An investigation is reported into the use of heat stabilisers for PVC in order to prevent discolouration on heating. The synergistic effect of polyvinyl alcohol (PVA) as co-stabiliser with a mixture of zinc and calcium stearates is discussed. When the PVA and PVC were pre-mixed in the powder state, the compound obtained showed a lower stabilisation effect on the discolouration of PVC, whereas when a PVA aqueous solution was prepared and the PVC powder was added to the PVA solution and dried, the resulting compound showed a superior stabilisation effect. The dispersed PVA domain size in the PVC sheets was measured quantitatively by image processing analysis, using the optical micrographs of the sheets. It was found that there was a good relationship between the dispersibility of PVA and its stabilisation effect. Thus, the co-stabilising effect of PVA increased with a decrease in the domain size. This was also confirmed by using different polyols as co-stabilisers. 11 refs.

Related reading

More journal reading and science coverage connected to this topic.