Syndiotactic polypropylene (sPP) was quenched from the melt in an icewater bath, and changes in the structural organization, during the aging time, were followed by X-rays, differential scanning calorimetry, and transport properties of dichloromethane at low activities. After 1 month, an increase of
Physical aging of dry elastin
β Scribed by L. C. E. Struik; G. Pezzin
- Publisher
- Wiley (John Wiley & Sons)
- Year
- 1980
- Tongue
- English
- Weight
- 340 KB
- Volume
- 19
- Category
- Article
- ISSN
- 0006-3525
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β¦ Synopsis
Abstract
Dry purified ligamentum nuchae elastin has been investigated for physical aging. The samples were quenched from a temperature (197Β°C) close to the softening point to a number of measuring temperatures ranging from β20 to +180Β°C. At each temperature, the smallβstrain torsional creep properties were determined at a number of elapsed intervals after the quench. Aging effects were found over the whole temperature range, and the creep and aging behavior of elastin turned out to be very similar to that of synthetic polymers.
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