Cationic Polymerization of a Novel Oxetane-Bearing Ionic Liquid Structure ans Properties of the Obtained Poly(ionic liquid)
Cationic Polymerization of a Novel Oxetane-Bearing Ionic Liquid Structure ans Properties of the Obtained Poly(ionic liquid)
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新型含氧杂环丁烷离子液体结构的阳离子聚合及所得聚（离子液体）的性能
DOI：
10.1002/pola.27342
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发表时间：
2014
期刊：
影响因子：
--
通讯作者：
Takeshi Endo
中科院分区：
文献类型：
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作者：
Kozo Matsumoto;Tomoaki Chijiiwa;Takeshi Endo
合成了1‐乙基‐3‐（3‐乙基‐3‐氧乙基甲基）咪唑双（三氟甲磺酰基）亚胺（OXImTFSI）离子液体，并对其阳离子聚合进行了研究。将1 -乙基咪唑和3 -氯甲基- 3 -乙基乙基氧乙烷的混合物在90℃下加热48小时，得到1 -乙基- 3 -（3 -乙基- 3 -氧乙基甲基）咪唑氯，通过与二（三氟甲磺酰基）亚胺锂离子交换，将其转化为室温离子液体OXImTFSI。以三氟化硼乙醚络合物为催化剂，对该离子液体进行了聚合反应，得到了聚肟- tfsi。热重分析结果表明，聚氧肟tfsi的5%失重温度（Td5）为409℃，热稳定性较高。差示扫描量热法测定该聚合物的玻璃化转变温度（Tg）为- 19℃，表明该材料具有较高的柔韧性。在23℃时，聚OXImTFSI的离子电导率为1.86 × 10−8S/cm，远低于OXImTFSI单体的5.05 × 10−4S/cm。©2014 Wiley期刊公司j .变异较大。科学。A部分：Polym。Chem.2014, 52岁,2986 - 2990
An ionic liquid, 1‐ethyl‐3‐(3‐ethyl‐3‐oxetanylmethyl)imidazolium bis(trifluoromethanesulfonyl)imide (OXImTFSI), was synthesized, and its cationic polymerization was examined. The heating of a mixture of 1‐ethylimidazole and 3‐chloromethyl‐3‐ethyloxetane at 90 °C for 48 h yielded 1‐ethyl‐3‐(3‐ethyl‐3‐oxetanylmethyl)imidazolium chloride, which was transformed to a room‐temperature ionic liquid, OXImTFSI, by ion exchange with lithium bis(trifluoromethanesulfonyl)imide (LiTFSI). This ionic liquid was polymerized using boron trifluoride ethyl ether complex as a catalyst to give polyOXImTFSI. Five percent weight loss temperature (Td5) of polyOXImTFSI evaluated by thermal gravimetric analysis was 409 °C, indicating the high thermal stability. Glass transition temperature (Tg) of the polymer evaluated by differential scanning calorimetry was −19 °C, indicating the high flexibility of the material. Ionic conductivity of polyOXImTFSI was determined to be 1.86 × 10−8S/cm at 23 °C, which was far lower than that of the OXImTFSI monomer (5.05 × 10−4S/cm). © 2014 Wiley Periodicals, Inc. J. Polym. Sci., Part A: Polym. Chem.2014,52, 2986–2990