【摘要】 目的：研究电子束辐射交联的聚氧化乙烯（ＰＥＯ） Ｒ—１５０ 水凝胶膜及其溶胀水凝胶膜的理化性能。方法：应用电子加速器照射聚合物ＰＥＯＲ—１５０ 水溶液制备成水凝胶及溶胀水凝胶后，测定其理化性能。结果：ＰＥＯＲ—１５０ 水凝胶的交联密度与辐射剂量呈正相关（ Ｐ＜ ０．０１）。聚合物浓度对其影响不明显（Ｐ＞ ０．０５）。ＰＥＯＲ—１５０ 水凝胶的溶胀度与辐射剂量呈负相关（Ｐ＜０．０１），与其浓度呈正相关（Ｐ＜０ ．０１） ，并且二者具有交互作用（Ｐ＜０．０１） 。ＰＥＯＲ—１５０ 水凝胶的硬度随辐射剂量增加而增加，随聚合物浓度增加而降低。与ＰＥＯＲ—１５０ 水凝胶膜相比，对ＰＥＯＲ—１５０ 溶胀水凝胶膜的照射可显著增加该膜的交联密度（Ｐ＜０．０５或０．０１），减低该膜的平衡水含量（Ｐ＜ ０．０５或０．０１） ，而硬度未见明显增加（Ｐ＞０．０５） 。结论：ＰＥＯＲ—１５０ 水凝胶的交联密度，平衡水含量和硬度与辐射剂量和聚合物浓度密切相关。更多还原

【Abstract】 The chemical and physical properties of PEO R—150 hydrogel films and its water swollen hydrogel films formed by electron beam irradiation were studied. The experimental results showed that the gel fractions of the PEO R—150 hydrogels increased with increase of the irradiation dose ( P<0.01 ). The polymer concentration did not produce a significant effect on the gel fractions ( P>0.05 ). The degrees of swelling of the PEO R—150 hydrogels decreased as the irradiation dose increased ( P<0.01 ), while they increased as the polymer concentration increased ( P<0.01 ), and both factors have a mutual effect on the degrees of swelling ( P<0.01 ). The hardness of the PEO R—150 hydrogel films increased slightly as the irradiation dose increased, while it decreased slightly as the polymer concentration increased. the irradiation of the water swollen PEO R—150 hydrogel films could significantly increase their gel fractions ( P<0.05 or P<0.01 ) and decrease their degrees of swelling ( P<0.05 or P<0.01 ) while their hardness did not increase significantly ( P>0.05 ). The results indicate that the crosslinking density, the degree of swelling and the hardness of the PEO hydrogel films are closely ralated to the irradiation dose and the polymer concentration.更多还原