| HEMA和NVP对硅橡胶亲水性能的影响 |
| Effect of HEMA and NVP on Hydrophilicity of Silicone Rubber |
| 投稿时间：2018-03-08 修订日期：2018-03-08 |
| DOI： |
| 中文关键词: 甲基乙烯基热固化加成型硅橡胶 半互穿聚合物网络 甲基丙烯酸羟乙酯 N-乙烯基吡咯烷酮 紫外光辐照 亲水性能 |
| 英文关键词: methyl vinyl thermosetting addition-type silicone rubber semi-interpenetrating polymer network hydroxyethyl methacrylate N-vinyl pyrrolidone UV irradiation hydrophilicity |
| 基金项目:国家科技重大专项(2017YFC1104304) |
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| 中文摘要: |
| 以甲基乙烯基热固化加成型硅橡胶和甲基丙烯酸羟乙酯（HEMA）或N-乙烯基吡咯烷酮（NVP）为原料，以二苯甲酮（BP）和安息香二甲醚（DMPA）为光引发剂，通过紫外光聚合在固体硅橡胶（SiR）中引入亲水的聚甲基丙烯酸羟乙酯（PHEMA）或聚乙烯基吡咯烷酮（PVP），可以获得半互穿聚合物网络（S-IPN）材料。试验结果表明：SiR/HEMA和SiR/NVP复合材料的红外光谱出现PHEMA和PVP的O—H键及C=O键的伸缩振动特征峰；扫描电镜显示复合材料断面均有明显的凸起；热重分析中SiR的质量损失率为69.11%，SiR/HEMA和SiR/NVP复合材料的质量损失率分别为80.72%和79.27%，且在高温下两种复合材料的分解速度均大于SiR；SiR表面的初始静态水接触角为107.5°，SiR/HEMA和SiR/NVP复合材料表面的初始静态水接触角分别为52.2°和20.8°。这都证明SiR/HEMA和SiR/NVP复合材料中形成了S-IPN，复合材料亲水性能大幅提高，且SiR/NVP复合材料的亲水性能明显优于SiR/HEMA复合材料。 |
| 英文摘要: |
| Using methylvinyl thermosetting addition type silicone rubber，hydroxyethyl methacrylate（HEMA） or N-vinyl pyrrolidone（NVP） as raw material，benzophenones（BP） and benzoin dimethyl ether（DMPA） as photoinitiators，hydrophilic poly（hydroxyethyl methacrylate）（PHEMA） or poly（vinylpyrrolidone）（PVP） were introduced into solid silicone rubber（SiR） by UV polymerization，and semi-interpenetrating polymer network（S-IPN） could be obtained.The test results showed that，the stretching vibration characteristic peaks of O—H bond and C=O bond in PHEMA and PVP appeared in the infrared spectrum of SiR/HEMA and SiR/NVP composites.Obvious protrusions cross-section could be seen in the electron microscope photos of composites.The mass loss rate of SiR was 69.11%，and that of SiR/HEMA and SiR /NVP composites were 80.72% and 79.27%，respectively.The decomposition rates of two kinds of composites at high temperature were higher than that of SiR.The initial static water contact angle of SiR was 107.5°，and that of SiR/HEMA and SiR/NVP composites were 52.2° and 20.8°，respectively.In conclusion，it was confirmed that S-IPNs were formed in SiR/HEMA and SiR/NVP composites，the hydrophilicity of two kinds of composites were improved greatly，and hydrophilicity of SiR/NVP composite were obviously superior to those of SiR/HEMA composite. |
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