高分子と低分子からなる有機ハイブリッドの動的粘弾性

概要

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Hindered phenol compound 3, 9-bis{1, 1-dimethyl-2[β-(3-tert-butyl-4-hydroxy-5-methylphenyl)propionyloxy]ethyl} -2, 4, 8, 10-tetraoxaspiro[5, 5]-undecane (AO-80) is polymorphous material with different physical structures. The initial AO-80 is highly crystalline, whereas AO-80 obtained by cooling from melt is an amorphous material. Annealing treatment below the melting point of AO-80 results in structural development. The mixture of chlorinated polyethylene (CPE) and vitrified AO-80 particles exhibits a dramatic change in the dynamic mechanical properties during heat treating at 130°C. The change can be attributed to the decomposition of the vitrified AO-80 particles and the hybridization of two constituents. The vitrified AO-80 particles can crystallize again in a CPE matrix by annealing at 100°C, but the crystal is different from the initial AO-80 in the microstructure. In addition, the incorporation of CPE chains with AO-80 caused a dramatic increase in the modulus. As a result, the AO-80 crystal particles containing some CPE chains act as multifunctional cross-links and the CPE/AO-80 hybrid was found to be a new type of elastomer.
社団法人日本ゴム協会の論文
2003-05-15