Functional poly(ethylene terephthalate) materials prepared by condensation copolymerization with ionic liquids
Functional poly(ethylene terephthalate) materials prepared by condensation copolymerization with ionic liquids
复制标题
离子液体缩聚制备功能聚对苯二甲酸乙二醇酯材料
DOI：
10.1007/s00289-013-1005-1
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发表时间：
2013-11-01
期刊：
影响因子：
3.2
通讯作者：
Xiong, Yubing
中科院分区：
文献类型：
--
作者：
Guo, Na;Hu, Dengwei;Xiong, Yubing
本文首次以氯化亚锡为催化剂，通过1，3-二（2-羟乙基）咪唑氯化物（四氟硼酸盐、六氟磷酸盐）与对苯二甲酸二甲酯和乙二醇的缩聚反应，制备了离子液体改性的聚对苯二甲酸乙二醇酯。利用粘度、红外光谱、热重分析、扫描电镜和电导率测量对所得功能材料进行了表征。通过静态水接触角的测定，考察了不同反离子对材料润湿性的影响。结果表明，离子液体的引入使功能材料的热稳定性和亲水性都得到了很大的提高。此外，通过体外抗菌实验对共聚物的抗菌性能进行了评价，结果表明离子液体改性后的共聚物具有良好的抗菌性能。从而找到了一种有效可行的聚对苯二甲酸乙二醇酯改性方法。
In this study, ionic liquid-modified polyethylene terephthalate was prepared for the first time via the condensation copolymerization of 1,3-bis(2-hydroxyethyl) imidazolium chloride (tetrafluoroborate, hexafluorophosphate) with dimethyl terephthalate and ethylene glycol using stannous chloride as the catalyst. The obtained functional materials were characterized using viscosity, infrared spectra, thermogravimetric analysis, scanning electron microscopy, and conductivity measurement. The wettabilities of the materials with different counterions were also tested by static water contact angle measurement. The results revealed that both the thermal stability and the hydrophilicity of functional material were enhanced greatly due to the introduction of ionic liquids. In addition, the antibacterial performances of the copolymers were also evaluated by in vitro assay, and the results proved that the ionic liquid-modified materials presented good antibacterial property. As a result, an effective and feasible method for the modification of polyethylene terephthalate was developed.