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Viscoelastic behavior of plasticized polyvinyl chloride at large deformations. I. Stress relaxation

✍ Scribed by Sabia, Raffaele ;Eirich, F. R.

Publisher
Wiley (John Wiley & Sons)
Year
1963
Tongue
English
Weight
586 KB
Volume
1
Category
Article
ISSN
0449-2951

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✦ Synopsis

Abstract

Two vinyl chloride polymers with intrinsic viscosities of 0.65 and 1.17 were compounded with four plasticizers. Stress relaxation data were obtained at three temperatures and analyzed by a step function of seven parameters in Maxwell representation. The relaxation times were nearly independent of plasticizer type, plasticizer content, molecular weight, and temperature. The moduli were found to decrease with increasing plasticizer content and/or temperature, the equilibrium moduli being directly dependent on the molecular weight while the delayed moduli were more dependent on plasticizer type. The molecular weight dependence of the equilibrium moduli can be attributed to a participation of the individual chains in several crystalline areas which act as crosslinking points.

📜 SIMILAR VOLUMES

Viscoelastic behavior of plasticized pol
Viscoelastic behavior of plasticized polyvinyl chloride at large deformations. II. Creep
✍ Sabia, Raffaele ;Eirich, F. R. 📂 Article 📅 1963 🏛 Wiley (John Wiley & Sons) 🌐 English ⚖ 623 KB

## Abstract Plasticized polyvinyl chloride has been found to undergo a permanent deformation when strained past 100%. At the same strains, internal energy effects become pronounced as reflected in the stress‐strain curves. Plasticizer efficiency has been evaluated in several respects, namely rubber