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首页> 外文期刊>Journal of Applied Polymer Science >EFFECT OF CROSSLINKERS ON PHOTOCOPOLYMERIZATION OF N-VINYLPYRROLIDONE AND METHACRYLATES TO GIVE HYDROGELS
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EFFECT OF CROSSLINKERS ON PHOTOCOPOLYMERIZATION OF N-VINYLPYRROLIDONE AND METHACRYLATES TO GIVE HYDROGELS

机译：交联剂对N-乙烯基吡咯烷酮和甲基丙烯酸酯光共聚合成水合物的影响

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摘要

N-Vinylpyrrolidone (NVP) and methacrylates are frequently copolymerized to give hydrogels useful as contact lenses. However, the nature of their copolymerization was not well understood. In this study, the effect of a crosslinker on the photocopolymerization of NVP and 2-hydroxyethyl methacrylate (HEMA) was discussed. It was found that crosslinkers with a vinyl carbonate group can copolymerize with NVP better than those containing an allyl group, which, in turn, are better than those containing a methacrylate group. A crosslinker with a vinyl carbonate and a methacrylate group can copolymerize NVP and HEMA the best in terms of giving hydrogels with the highest water content, followed by a crosslinker with a combination of allyl and methacrylate groups. Crosslinkers with only methacrylate or vinyl carbonate groups gave hydrogels either too fragile or too stiff to be useful. (C) 1997 John Wiley & Sons, Inc. [References: 6]
机译：N-乙烯基吡咯烷酮（NVP）和甲基丙烯酸酯经常被共聚以产生可用作隐形眼镜的水凝胶。然而，它们的共聚的性质还没有被很好地理解。在这项研究中，讨论了交联剂对NVP和甲基丙烯酸2-羟乙酯（HEMA）的光共聚的影响。已经发现，具有碳酸乙烯基酯基的交联剂与含有烯丙基的那些相比可以更好地与NVP共聚，而后者又比含有甲基丙烯酸酯的那些更好。就提供具有最高水含量的水凝胶而言，具有碳酸乙烯基酯和甲基丙烯酸酯基团的交联剂可以使NVP和HEMA最佳共聚，其次是具有烯丙基和甲基丙烯酸酯基团的交联剂。仅具有甲基丙烯酸酯或碳酸乙烯基酯基团的交联剂使水凝胶太脆或太硬而不能使用。 （C）1997 John Wiley＆Sons，Inc. [参考：6]

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