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Optimization of the Crystallization Process of Bis(2-hydroxyethyl) Terephthalate
Crystal Research and Technology ( IF 1.5 ) Pub Date : 2021-09-18 , DOI: 10.1002/crat.202100025 Peiquan Yuan 1 , Baoshu Liu 1 , Hua Sun 1
Crystal Research and Technology ( IF 1.5 ) Pub Date : 2021-09-18 , DOI: 10.1002/crat.202100025 Peiquan Yuan 1 , Baoshu Liu 1 , Hua Sun 1
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The crystallization process of bis(2-hydroxyethyl) terephthalate is experimentally investigated. The optimized crystals of bis(2-hydroxyethyl) terephthalate have the median particle size (D50) of 1300 µm and a perfect crystal habit, and their diameter span reduces from 11.48 (before optimization) to 1.72 (after optimization). The results show that more oxygen atoms at both ends of the crystal are exposed to the crystal surfaces, which make it easy to form hydrogen bonds with free bis(2-hydroxyethyl) terephthalate. Therefore, the crystal surfaces at both ends grow fastest and tend to disappear eventually.
中文翻译：
对苯二甲酸双（2-羟乙基）酯结晶工艺的优化
对双（2-羟乙基）对苯二甲酸酯的结晶过程进行了实验研究。优化后的对苯二甲酸双（2-羟乙基）酯晶体的中值粒径（D 50）为1300 µm，具有完美的晶体习性，其直径跨度从优化前的11.48（优化前）降低到1.72（优化后）。结果表明，晶体两端有更多的氧原子暴露在晶体表面，容易与游离的对苯二甲酸双（2-羟乙基）酯形成氢键。因此，两端的晶面生长最快，最终趋于消失。
更新日期：2021-11-16
中文翻译：
对苯二甲酸双（2-羟乙基）酯结晶工艺的优化
对双（2-羟乙基）对苯二甲酸酯的结晶过程进行了实验研究。优化后的对苯二甲酸双（2-羟乙基）酯晶体的中值粒径（D 50）为1300 µm，具有完美的晶体习性，其直径跨度从优化前的11.48（优化前）降低到1.72（优化后）。结果表明，晶体两端有更多的氧原子暴露在晶体表面，容易与游离的对苯二甲酸双（2-羟乙基）酯形成氢键。因此，两端的晶面生长最快，最终趋于消失。
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