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Citation: HO YI, CHANG CHIH-PING, TANG JONG-PAO. X-RAY ANALYSIS OF GRAFT COPOLYMER MADE BY POLYMERIZING ACRYLONITRILE ONTO ORIENTED POLYPROPYLENE[J]. Acta Polymerica Sinica, ;1964, 6(1): 31-35. shu

X-RAY ANALYSIS OF GRAFT COPOLYMER MADE BY POLYMERIZING ACRYLONITRILE ONTO ORIENTED POLYPROPYLENE

The structure of graft copolymer has been investigated by X-ray diagrams. The grafting process was carried out through prelin inary irradiation of oriented polypropylene with gamma-radiation and then treated with acrylonitrile.With the aid of X-ray diagrams, a model for the state of molecular aggregation of the copolymer under investigation was suggested. It was found that shrinkage of the said copolymer is smaller than that of oriented polypropylene and that of the oriented graft copolymer made from acrylotrile and polypropylene. The present graft system is in a quasi-stable stat which fixes the molecular orientation in the polymer.
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