Hydrotalcites Catalyze the Acidolysis Polymerization of Phenolic Acid to Create Highly Heat-Resistant Bioplastics
作者:Manu Chauzar、Seiji Tateyama、Takanori Ishikura、Keitaro Matsumoto、Daisaku Kaneko、Kohki Ebitani、Tatsuo Kaneko
DOI:10.1002/adfm.201200427
日期:2012.8.21
Acidolysis polymerization has been used to prepare phenol‐derived polymers such as liquid crystalline (LC) polymers, and is catalyzed by mildly‐alkaline salts. The catalytic effects of hydrotalcites (HTs), which are natural alkalescent minerals with controllable basicity, are investigated on the acidolysis copolymerization of coumarates such as p‐coumaric acid and caffeic acid. As a result, the LC
酸解聚合已用于制备苯酚衍生的聚合物,例如液晶(LC)聚合物,并由轻度碱金属盐催化。水滑石的催化效果(HTS),其是天然的碱性矿物质具有可控碱度,上coumarates如酸解共聚进行了研究p香豆酸和咖啡酸。结果,在HT存在下以3的Mg / Al比制备的LC共聚物显示出比在任何其他碱金属盐存在下制备的共聚物更高的分子量值。另一方面,在HT的存在下制备的共聚物显示出清晰的LC状态,其中聚合物链在玻璃纤维的表面上取向。该树脂由玻璃纤维填料沿其纵轴排列并在300°C下退火20分钟,软化温度为305°C,同时保持85 MPa的高机械强度和超过1的高机械模量GPa。