原位微悬浮法纳米二氧化硅/氯醚树脂复合粒子的制备及表征
用硅烷偶联剂KH-570对纳米SiO2进行表面处理,干燥后预先分散于乙烯基异丁基醚中,再通过原位微悬浮聚合法制备了纳米SiO2/氯醚树脂复合粒子;考察了KH-570添加量、pH值和反应时间对纳米SiO2表面接枝率的影响,并用傅里叶变换红外光谱、核磁共振氢谱、差示扫描量热分析、热重分析和透射电子显微镜对纳米SiO2和纳米SiO2/氯醚树脂复合粒子进行了表征.结果表明,纳米SiO2表面改性的最佳条件为：KH-570与纳米SiO2质量比为1.2∶1,pH值为8.0 ～9.0,反应时间为8h;制备出的纳米SiO2/氯醚树脂复合粒子以纳米SiO2为核,其平均粒径为150～ 250 nm,其中核的直径为1...
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| Published in | 合成橡胶工业 Vol. 37; no. 2; pp. 91 - 95 |
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| Main Author | |
| Format | Journal Article |
| Language | Chinese |
| Published |
安徽大学化学化工学院安徽省绿色高分子材料重点实验室,合肥,230601%安徽省化工研究院,合肥,230041
2014
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| Subjects | |
| Online Access | Get full text |
| ISSN | 1000-1255 |
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| Summary: | 用硅烷偶联剂KH-570对纳米SiO2进行表面处理,干燥后预先分散于乙烯基异丁基醚中,再通过原位微悬浮聚合法制备了纳米SiO2/氯醚树脂复合粒子;考察了KH-570添加量、pH值和反应时间对纳米SiO2表面接枝率的影响,并用傅里叶变换红外光谱、核磁共振氢谱、差示扫描量热分析、热重分析和透射电子显微镜对纳米SiO2和纳米SiO2/氯醚树脂复合粒子进行了表征.结果表明,纳米SiO2表面改性的最佳条件为：KH-570与纳米SiO2质量比为1.2∶1,pH值为8.0 ～9.0,反应时间为8h;制备出的纳米SiO2/氯醚树脂复合粒子以纳米SiO2为核,其平均粒径为150～ 250 nm,其中核的直径为100～150 nm. |
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| Bibliography: | nanosilica; poly （ vinyl chloride-co-vinyl isobutyl ether） ; in situ micro-suspension poly-merization; surface modification; core-shell struc-ture ; grafting ratio YANG Jian-jun1, LU Guo-bin1 , WU Qing-yun , ZHANG Jian-an1 , WU Ming-yuan, WANG Shen-sheng2 （1. Key Laboratory of Environment-friendly Polymer Materials of Anhui Province, School of Chemistry and Chemical Engineering of Anhui University, Hefei 230601, China; 2. Anhui Research Institute of Chemical Industry, Hefei 230041, China） 62-1036/TQ The nano-SiO2/poly（vinyl chloride-covinyl isobutyl ether） （VC-VIBE） composite particles were synthesized by in situ micro-suspension polymerization, before which nano-SiO2 was modified with silane coupling agent KH-570, dried and then dispersed in VIBE. The effects of the amount of KH- 570, pH value, reaction time on grafting ratio of KH-570 onto nano-SiO2 were investigated. The mod- ified nano-SiO2 and composite particles were charac- terized by Fourier transform infrared spectroscopy, Z H-nuclear magnetic resonance |
| ISSN: | 1000-1255 |