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投稿时间：2010-04-20
投稿时间：2010-04-20
中文摘要: 采用悬浮聚合法，以N 乙烯基咪唑(NVI)为主单体、苯乙烯(St)为共单体、乙二醇二甲基丙烯酸酯(EGDMA)为交联剂、聚乙烯醇（PVA）为分散剂，制备了吸附材料PNVI St交联微球。重点考察了分散剂用量、搅拌速率、油水两相体积比、交联剂用量、NaCl用量对交联微球的成球性能及粒度的影响规律，研究了该微球对二氯苯酚的静态吸附性能。结果表明：分散剂用量、搅拌速率与油水两相体积比是影响交联微球制备的主要因素，在水相中加入电解质NaCl有助于成球过程，控制悬浮聚合的反应条件，可以制备出球形度好、粒径在100～200 μm可调控的交联微球PNVI St。静态吸附实验结果表明：凭借强烈的氢键相互作用，微球表面的咪唑基团对二氯苯酚具有很强的吸附能力，饱和吸附量可达143 mg/g。
Abstract:Cross linked polyvinylimidazole microspheres (PNVI St) were prepared through suspension polymerization using N vinylimidazole (NVI) as monomer, styrene (St) as comonomer, ethyl glycol dimethacylate (EGDMA) as cross linker and polyvinyl alcohol（PVA） as dispersant. Effects of various factors such as the amount of the dispersant, cross linker and NaCl concentration, the stirring rate, the volume ratio of oil phase to water phase on the morphology and size of the cross linked microspheres were investigated. The adsorption properties of microspheres PNVI St towards 2, 4 dichlorophenol were studied preliminarily. Results show that the amount of the dispersant, the stirring rate and the ratio of oil phase to water phase are key factors. The cross linked copolymer microspheres PNVI St with excellent sphericity and controllable particle diameter in a range of 100—200 μm could be obtained. In addition, the adsorption property of microspheres PNVI St to 2, 4 dichlorophenol is excellent, and the static adsorption capacity is 143 mg/g.
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基金项目:山西省青年科技研究基金(2010021008 4)；山西省研究生优秀创新(20081065)
引用本文：
王蕊欣,高保娇.N-乙烯基咪唑共聚交联微球的制备及其对二氯苯酚的吸附特性[J].功能高分子学报,2010,23(3):275-280.
WANG Rui xin,GAO Bao jiao.Preparation and 2, 4 Chlorophenol Adsorption Behavior of Cross Linked Polyvinylimidazole Microspheres[J].Journal of Functional Polymers,2010,23(3):275-280.
王蕊欣,高保娇.N-乙烯基咪唑共聚交联微球的制备及其对二氯苯酚的吸附特性[J].功能高分子学报,2010,23(3):275-280.
WANG Rui xin,GAO Bao jiao.Preparation and 2, 4 Chlorophenol Adsorption Behavior of Cross Linked Polyvinylimidazole Microspheres[J].Journal of Functional Polymers,2010,23(3):275-280.
