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The properties of alpha‐olefin–sulfur dioxide copolymer prepared from the series C 8 –C 18 (even‐numbered) alpha‐olefins and sulfur dioxide are described. These polymers undergo clean thermal degradation and have high permeabilities to oxygen and carbon dioxide. Maximum permeabilities, maximum per cent elongation at the yield point, and minimum density are obtained with the C 16 ‐based polymer. An explanation is proposed involving a competitive plasticizing/side chain crystallization effect.
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Crawford et al. (1971) studied this question.
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