Non-newtonian viscosities of poly(vinyl acetal) solutions
β Scribed by Masakazu Matsumoto; Yasuzi Ohyanagi
- Publisher
- John Wiley and Sons
- Year
- 1960
- Tongue
- English
- Weight
- 168 KB
- Volume
- 4
- Category
- Article
- ISSN
- 0021-8995
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The ultrasonic degradation of poly(vinyl acetate) (PVAc) solutions was carried out in tetrahydrofuran (THF) at 20, 25, 30, and 35Β°C to investigate the effects of the temperature and solution concentration on the rate of degradation. The degradation kinetics were studied with viscometry. The calculat
## Abstract The enzymatic degradability of poly(vinyl acetate) was investigated in toluene solutions at various temperatures with hog pancreas lipase. The polymer degraded by specific scission to yield oligomeric products with a molecular weight of 700. Continuous distribution kinetics were used to