Physical Properties of Polyethylene Terephthalate Films - Industrial

Physical Properties of Polyethylene Terephthalate Films. Leonard E. Amborski, and Donald W. Flierl. Ind. Eng. Chem. , 1953, 45 (10), pp 2290–2295...
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INDUSTRIAL AND ENGINEERING CHEMISTRY

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portions, and the percentage composition on a dry basis was calculated for each mixture. From each mixture, two films (0,002inch dry thickness) were cast. One film was allowed t o dry for 16 hours under room conditions. and the other was dried for 16 hours in an oven a t 105" C. Eahh film was cut into small pieces, which were immersed in aaueous buffer solutions of varying DH. After standing 1 hour a t rdom temperature the solubiliig Gf -the films a t various pH values was rated visually.

Vol. 45, No. 10

LITERATURE CITED

(1) Dyer, E., and .