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首页> 外文期刊>Journal of Applied Polymer Science >The synthesis and characterization of novel carboxyl telechelic microspheres
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The synthesis and characterization of novel carboxyl telechelic microspheres

机译：新型羧基远螯微球的合成与表征

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A series of novel carboxyl telechelic microspheres (CTMs) with different length of oligo-caprolactone telechelic chains are readily prepared via a three-step approach involving: (1) the hydrolytic oligomerization of epsilon-caprolactone, (2) the esterification of oligo-caprolactone with maleic anhydride, and (3) the suspension polymerization of maleic acid polycaprolactone ester acid (MAPCLA) with divinylbenzene. The CTMs, which are water swellable, spherical, and porous, contain carboxyl functionalities of 1.0 to 4.2 mEq/g (dry), which are found to be lower swelling change (during conversion of ionic form) and higher exchange efficiencies than those of the Emerk. IV resin. The intermediate products, oligo-caprolacton, and MAPCLA are characterized by the acid-base titration, hydroxyl value titration, and infrared and H-1 nuclear magnetic resonance analysis, respectively. The morphology and porous of CTMs are also tested by scanning electron microscopy and Brunauer-Emett-Teller technology. The effects of the length of the telechelic chains and the degree of crosslinking (divinylbenzene), as well as the amount of porogen (toluene), on the physical and chemical parameters of the CTMs are also described. (C) 1998 John Wiley & Sons, Inc. [References: 11]
机译：可通过三步法轻松制备一系列具有不同长度的寡己内酯远螯链的新型羧基远螯微球（CTM），其中包括：（1）ε-己内酯的水解低聚，（2）己内酯的酯化（3）马来酸聚己内酯酸酯酸（MAPCLA）与二乙烯基苯的悬浮聚合。 CTM具有水溶胀性，球形和多孔性，其羧基官能度为1.0至4.2 mEq / g（干燥），发现其溶胀变化（在离子形式转化过程中）较低，交换效率高于CTM。 Emerk。 IV树脂。中间产物低聚己内酰胺和MAPCLA分别通过酸碱滴定，羟值滴定以及红外和H-1核磁共振分析进行表征。还通过扫描电子显微镜和Brunauer-Emett-Teller技术测试了CTM的形态和多孔性。还描述了远螯链的长度和交联度（二乙烯基苯）以及成孔剂（甲苯）的量对CTM的物理和化学参数的影响。 （C）1998 John Wiley＆Sons，Inc. [参考：11]

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