引用本文:
张万喜, 张长春, 孙国恩, 董文飞, 于黎, 石洪皋. 预辐照聚乙烯醇纤维与N,N'-亚甲基双丙烯酸酰胺的接枝、交联[J]. 应用化学,
2002, 19(1): 61-65.
Citation: ZHANG Wan-Xi, ZHANG Chang-Chun, SUN Guo-En, DONG Wen-Fei, YU Li, SHI Hong-Gao. Graft Polymerization of N,N'-Methylenebisacrylamide and Crosslinking with Preirradiated PVA Fiber[J]. Chinese Journal of Applied Chemistry, 2002, 19(1): 61-65.
Citation: ZHANG Wan-Xi, ZHANG Chang-Chun, SUN Guo-En, DONG Wen-Fei, YU Li, SHI Hong-Gao. Graft Polymerization of N,N'-Methylenebisacrylamide and Crosslinking with Preirradiated PVA Fiber[J]. Chinese Journal of Applied Chemistry, 2002, 19(1): 61-65.
预辐照聚乙烯醇纤维与N,N'-亚甲基双丙烯酸酰胺的接枝、交联
摘要:
在缓冲溶液和亚铁离子存在下,辐照后的聚乙烯醇(PVA)纤维和N,N'-亚甲基双丙烯酸酰胺(N,N'-MBAA)发生接枝、交联反应.研究了单体浓度、单体和聚合物质量比、亚铁离子浓度、pH值、温度、时间对接枝率的影响.结果表明,适合于提高PVA纤维的耐热软化点的接枝率为15%~20%,较佳的工艺条件为:亚铁离子浓度为0.001mol/L,单体浓度大于2.5g/dL,单体和聚合物的质量比(m(N,N'-MBAA)/m(PVA))大于0.4,pH值3.4,接枝温度80℃,接枝反应时间15~30min.
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关键词:
- 聚乙烯醇纤维
- / N,N'-亚甲基双丙烯酰胺
- / 接枝共聚交联
- / 60Co辐照
English
Graft Polymerization of N,N'-Methylenebisacrylamide and Crosslinking with Preirradiated PVA Fiber
Abstract:
Polyvinyl alcohol(PVA) preirradiated by 60CoV ray was graft copolymerized and crosslinked with N,N'-methylenebisacrylamide(MBAA) in buffered aqueous solution in the presence of ferrous ions. The effects of monomer concentration, mass ratio of MBAA to PVA, ferrous ion concentration, pH value, temperature and time on the grafting degree were investigated. The results showed that the softing point of PVA could be increased 15%~20% under the following grafting conditions:c(Fe2+)>0.001 mol/L, c(MBAA)=2.5 g/dL, m(N,N'-MBAA)/m(PVA)>0.4, pH=3.4, at 80℃ for 15~30 min.
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