| 两亲性接枝共聚物PVA-g-PBA的合成与表征 |
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| 引用本文： | 韩燕蓝,扈蓉,邓敏,王群,何培新. 两亲性接枝共聚物PVA-g-PBA的合成与表征[J]. 胶体与聚合物, 2005, 23(1): 20-22 |
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| 作者姓名： | 韩燕蓝 扈蓉 邓敏 王群 何培新 |
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| 作者单位： | 湖北大学化学与材料科学学院,武汉,430062 |
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| 摘 要： | 以过硫酸钾 (KPS)为引发剂 ,将丙烯酸丁酯 (BA)接枝到聚乙烯醇 (PVA)上 ,制得两亲性接枝共聚物 PVA-g-PBA。用红外光谱、X射线衍射表征了接枝物 ,研究了引发剂浓度、单体浓度及反应时间对单体转化率、接枝率和接枝效率和接枝率对共聚物吸水性能的影响。结果表明在水介质中 ,氮气保护下 ,70℃时 ,以过硫酸钾 (KPS)为引发剂 ,将丙烯酸丁酯 (BA)接枝到聚乙烯醇 (PVA)上 ,[PVA]为 2 .5× 1 0 -4mol/ L,[BA]为 0 .63 mol/ L、[KPS]为 5 .5 5× 1 0 -4时 ,反应 5 h,能获得较高 CM、G和 Ge的接枝物。接枝物的接枝率越高 ,吸水率越低 ,吸水 1 0 h达平衡 ,最大平衡吸水率为 1 88.8%。
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| 关 键 词： | 聚乙烯醇 丙烯酸丁酯 接枝共聚 过硫酸钾 PVA-g-PBA |
| 修稿时间： | 2004-11-08 |
Synthesis and characterization of amphiphilic graft copolymer PVA-g-PBA |
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| Han Yanlan,Hu Rong,Deng Min,Wang Qun,HE Peixin. Synthesis and characterization of amphiphilic graft copolymer PVA-g-PBA[J]. Chinese Journal of Colloid and Polymer, 2005, 23(1): 20-22 |
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| Authors: | Han Yanlan Hu Rong Deng Min Wang Qun HE Peixin |
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| Affiliation: | Faculty of Chemistry and Material Science Hubei University Wuhan 430062 China |
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| Abstract: | A amphiphilic graft copolymer PVA-g-PBA was prepared by grafting Butyl Acrylate (BA) onto Poly(vinyl alcohol) (PVA) with Potassium Persulfate (KPS) as initiator under N2 in aqueous medium at 70℃. The formation of graft copolymer was confirmed by means of IR, XRD. The influences of initiator , concentration, monomer concentration and reaction time on the percentage of monomer conversion, grafting and grafting efficiency have been discussed. The water-absorbent behabiors of graft copolymer also studied. |
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| Keywords: | Poly(vinyl alcohol) (PVA) Butyl Acrylate (BA) Graft Copolymerization Potassium Persulfate (KPS) PVA-g-PBA |
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