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He Tianbai, Hou Chunrong. CONFORMATIONS AND FLEXIBILITY OF FLUOROPOLYMERS[J]. Chinese Journal of Applied Chemistry,
;1985, 2(1): 15-18.
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Based on conformation analysis it has been found that the correlations among glassy transition temperature, Tg, cross-sectional area per chain, A, and steric factor of internal rotation, σ, for fluoropolymers are similar to those for other polymers. The equation,Tg=973(σ-1.44), has been found for the estimation of the value of the steric foctor of fluoropolymer chains. The fact that at the same values of steric factor the glassy transition temperatures of fluoropolymers are higher than those of other polymers is attributed to the bensely packed chains of fluoropolymers.
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