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Citation: He Tiabai, Chang Wanxi, Sun Jiazhen. EFFECT OF CHAIN STRUCTURE ON THE RADIATION BEHAVIOUR OF 1,2-POLYBUTADIENES[J]. Chinese Journal of Applied Chemistry, ;1985, 2(1): 64-66. shu

EFFECT OF CHAIN STRUCTURE ON THE RADIATION BEHAVIOUR OF 1,2-POLYBUTADIENES

1.
Changchun Institute of Appolied Chemistry, Academia Sinica

Received Date: 18 May 1984
Available Online: 17 October 1984

In this paper, the relationship of the degree of degradation of γ-irradiated 1,2-polybutadienes with various 1,2-unit contents to the radiation dose was studied. It is found that the sol fraction of the crosslinked samples is proportional to the β power of the radiation dose, and the lower the 1,2-unit content, the smaller the β value is. Since the molecular chain of 1,2-polybuta-diene with lower 1,2-unit content is more flexible than that with higher content, radiation behaviour of 1,2-polybutadienes relates to their chain flexibility. It is proposed that structural parameters of polymer, such as cohesion energy density and cross-sectional area of polymer chain, could be used to relate to the parameter β, that is, to the effect of structure of polymer on the radiation behaviour.
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