| 表面接枝制备PMMA/纳米TiO_2复合粒子的研究 |
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| 引用本文： | 廖禄生,廖建和,李一民,黄桂春,陈桂雄.表面接枝制备PMMA/纳米TiO_2复合粒子的研究[J].化学工程师,2010(4):6-9,29. |
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| 作者姓名： | 廖禄生 廖建和 李一民 黄桂春 陈桂雄 |
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| 作者单位： | 1. 海南大学,材料与化工学院,海南,海口,570228
2. 海南大学,材料与化工学院,海南,海口,570228;海南农垦天然橡胶产业集团,海南,海口,570000 |
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| 基金项目： | 出国留学人员择优项目 |
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| 摘 要： | 采用表面接枝反应的方法,在纳米TiO2上接枝偶联剂KH-570引入化学键结合的不饱和双键,通过乳液聚合制备了化学接枝的PMMA/纳米TiO2复合粒子。研究了聚合条件对接枝率的变化和微观形态的影响。FT-IR和TGA分析结果表明,TiO2表面偶联剂接枝率为8.86%,聚合物接枝率达62.7%;TEM观察表明,偶联剂处理使纳米TiO2的亲油性提高且粒径没有增加,聚合物接枝后的复合粒子分散性提高。
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| 关 键 词： | 纳米TiO2 表面接枝 PMMA 硅烷偶联剂 乳液聚合 |
Study on preparation of PMMM/nano-TiO2 composite particles by surface grafting* |
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| LIAO Lu-sheng,HAO Jian-he,LI Yi-min,HUANG Gui-chun,CHEN Gui-xiong.Study on preparation of PMMM/nano-TiO2 composite particles by surface grafting*[J].Chemical Engineer,2010(4):6-9,29. |
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| Authors: | LIAO Lu-sheng HAO Jian-he LI Yi-min HUANG Gui-chun CHEN Gui-xiong |
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| Affiliation: | 1.School of Materials and Chemical Engineering, Hainan University, Haikou 570228, China; 2.Natural Rubber Industrial Group of Hainan State Farm, Haikou 570000, China) |
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| Abstract: | The PMMA/nano-TiO2 composite particles were prepared with emulsion polymerization and surface grafting based on chemical bonding which was ensured by modification with silane coupling agent KH-570 to intraduce unsaturated double bond as active site.The influences of polymerizing conditions on grafting effectives and the morphology, of the copolymer were investigated.FT-IR and TGA results showed that the grafting rate of coupling agent on the TiO2 surface and the grafting efficiency of polymer were 8.86% and 62.7% respectively.According to TEM analysis, lipophilicity of the nano-TiO2 was improved with no increase in nano-diameter by coupling agent treatment, dispersion of the composite particles was also improved after polymer grafting. |
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| Keywords: | PMMA |
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