Crystalline structure were studied on both block and random propyleneethylene copolymer fractions, which were obtained by temperature rising elution fractionation. The peak characteristic of a-polypropylene (PP) was observed for all fractions, except the fraction eluted at room temperature. A charac
Ethylene–propylene copolymers: Crystallinity, infrared, and creep studies
✍ Scribed by Frederic J. Linnig; Edwin J. Parks; Lawrence A. Wood
- Publisher
- John Wiley and Sons
- Year
- 1964
- Tongue
- English
- Weight
- 442 KB
- Volume
- 8
- Category
- Article
- ISSN
- 0021-8995
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The article describes the mechanical properties of a propylene-ethylene block copolymer (Co-PP) used as a matrix with acrylic acid (AA) and strengthened with glass fiber. Isotactic polypropylene (i-PP) is also used as a matrix to compare with the results obtained from the Co-PP grafting. Experimenta
We present a characterization of the state of semi-crystallization of random propylene± ethylene copolymers, observing the transverse relaxation of protons attached to the chains. The degree of crystallinity was determined step by step, from NMR, during the progressive annealing of the copolymers, q