Viscoelastic properties of plasticized polymers

✍ Scribed by Arthur V. Tobolsky; D. Carlson; N. Indictor

• Publisher: John Wiley and Sons
• Year: 1963
• Tongue: English
• Weight: 186 KB
• Volume: 7
• Category: Article
• ISSN: 0021-8995
• DOI: 10.1002/app.1963.070070136

✦ Synopsis

In the literature there is a paucity of comparative data concerning the viscoelastic properties of plasticized polymers. Why, in particular, are certain polymers used more often in plasticized form than in others?

To obtain some data we selected the polymers polystyrene, polymethyl methacrylate, and polyvinyl chloride, whose T , values are listed as 100, 105, and 75OC. respectively. In all cases the polymers were plasticized with dioctylphthalate in the proportion, by weight, of 100 parts polymer and 20 parts dioctylphthalate.

From a combination of torsional creep for the high modulus data and stress relaxation in tension for lower modulus data, stress relaxation master curves for these three plasticized polymers were obtained. The primary data for plasticized polyvinyl chloride, reduced to stress relaxation modulus,