Rapid Growth of Pentaerythritol Crystal

Pentaerythritol(PET) crystal has been grown rapidly from the solution with sulfuric acid as the additive. The growth rate of PET crystal in prismatic shape exceeds 1.5 mm/day and crystallization size is 55×55×50 mm3. X-ray diffraction analysis was used to confirm the structure integrity. The diffraction efficiency of rapid-grown crystal was characterized as effective as that of normal growth.     

以H2SO4为添加剂降温法生长PET晶体

采用H2SO4作为季戊四醇(PET)晶体生长的添加剂,用溶液降温法在5 L生长槽内生长出45 mm×45 mm×40 mm 的PET单晶,生长速度达到1.5 mm/d,比纯态溶液生长晶体的速度提高2倍.采用XRD、FT-IR和TG等测试方法对晶体进行表征,实验表明添加剂H2SO4不影响晶体的结构完整性.