Citation:
ZHANG Wanxi, SUN Jiazhen, QIAN Baogong. STRUCTURE EFFECTS ON THE SOL FRACTION-DOSE RELATIONSHIP IN RADIATION CROSSLINKING OF POLYMERS*[J]. Chinese Journal of Polymer Science,
1985, 3(1): 17-25.
STRUCTURE EFFECTS ON THE SOL FRACTION-DOSE RELATIONSHIP IN RADIATION CROSSLINKING OF POLYMERS*
摘要:
The structure effects of polymers on the relationship between sol fraction and radiation dose arediscussed in detail. In consideration of the deviation of experimental results from Charlesby-Pin-ner's and Chen-Liu-Tang's expressions relating sol fraction to radiation dose, we introduced an ex-ponent β concerned with the structure and property parameters of a polymer (glass transition tem-perature Tg and molecular internal rotating steric factor δ) and assumed that the fracture density isproportional to Rβ(R is radiation dose).Thus,a general expression,formula (9),relating sol fraction to radiation dose is derived.When β=1 and β=0.5,this expression is reduced to the abpve-said two expressions,Using this general expression,the experimental data of a number of polymers are treated.It is shown that the expression is in good agreement with the experimental results,β value is in the range of 0.5 to 1.0.
English
STRUCTURE EFFECTS ON THE SOL FRACTION-DOSE RELATIONSHIP IN RADIATION CROSSLINKING OF POLYMERS*
Abstract:
The structure effects of polymers on the relationship between sol fraction and radiation dose arediscussed in detail. In consideration of the deviation of experimental results from Charlesby-Pin-ner's and Chen-Liu-Tang's expressions relating sol fraction to radiation dose, we introduced an ex-ponent β concerned with the structure and property parameters of a polymer (glass transition tem-perature Tg and molecular internal rotating steric factor δ) and assumed that the fracture density isproportional to Rβ(R is radiation dose).Thus,a general expression,formula (9),relating sol fraction to radiation dose is derived.When β=1 and β=0.5,this expression is reduced to the abpve-said two expressions,Using this general expression,the experimental data of a number of polymers are treated.It is shown that the expression is in good agreement with the experimental results,β value is in the range of 0.5 to 1.0.
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