磺酸功能化离子液体催化3-羟基丙酸甲酯酯交换聚合反应
Ester Exchange Polymerization of 3-Hydroxyl Propionic Acid Methyl Ester Catalyzed by SO_3 H-functionalized Ionic Liquids
查看参考文献21篇
文摘
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以磺酸功能化咪唑离子液体为催化剂,以3-羟基丙酸甲酯为原料,采用自身酯交换法合成了具有生物可降解性能的聚羟基脂肪酸酯.系统考察了离子液体种类、反应温度以及聚合反应时间对反应性能的影响,同时采用红外、核磁、热分析等手段对产物进行表征.研究结果表明:阴离子为CF_3SO_3~-的磺酸功能化离子液体在120℃的低温下催化聚合反应所得聚酯M_w可达10 159,收率82.1%;通过水洗方法可有效去除产物中的离子液体催化剂,从而避免催化剂污染产物. |
其他语种文摘
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Employing SO_3H-functionalized ionic liquids as catalysts,the biodegradable poly[3-hydroxypropionic acid](PHP) was obtained by ester exchange polymerization of 3-Hydroxyl propionic acid methyl ester(3-HPM).The effects of various ionic liquids,reaction temperature and reaction time on the polymerization performance were discussed in detail.Meanwhile,the FTIR,NMR and TG-DSC were applied to characterize the products.The PHP with M_w above 1.0×10~4 and yield above 82% could be obtained when catalyzed by under the optimal reaction conditions.In addition,the catalyst in the polymer could be removed completely after washing with water,efficiently avoiding the pollution of the product. |
来源
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分子催化
,2012,26(4):293-299 【核心库】
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关键词
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磺酸功能化离子液体
;
3-羟基丙酸甲酯
;
聚3-羟基丙酸酯
;
酯交换聚合
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地址
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中国科学院兰州化学物理研究所, 中国科学院羰基合成与选择氧化国家重点实验室, 甘肃, 兰州, 730000
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语种
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中文 |
ISSN
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1001-3555 |
学科
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化学;化学工业 |
文献收藏号
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CSCD:4624312
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