Synthesis of Biobased Polyurethane from Oleic and Ricinoleic Acids as the Renewable Resources via the AB-Type Self-Condensation Approach
作者:Dnyaneshwar V. Palaskar、Aurélie Boyer、Eric Cloutet、Carine Alfos、Henri Cramail
DOI:10.1021/bm100233v
日期:2010.5.10
Polyurethane (PU) from methyl oleate (derived from sunflower oil) and ricinoleic acid (derived from castor oil) was synthesized using the AB-type self-polycondensation approach for the first time. In the present work, three novel AB-type monomers, namely, a mixture of 10-hydroxy-9-methoxyoctadecanoyl azide/9-hydroxy-10-methoxyoctadecanoyl azide (HMODAz), 12-hydroxy-9-cis-octadecenoyl azide (HODEAz)
首次使用AB型自缩聚方法合成了油酸甲酯(得自葵花籽油)和蓖麻油酸(得自蓖麻油)的聚氨酯。在目前的工作中,三种新颖的AB型单体,即10-羟基-9-甲氧基十八碳烯基叠氮化物/ 9-羟基-10-甲氧基十八碳烯基叠氮化物(HMODAz),12-羟基-9-顺式-十八碳烯基叠氮化物(HODEAz)的混合物)和甲基-N -11-羟基-9-顺式使用简单的反应步骤,由油酸甲酯和蓖麻油酸合成了氨基甲酸十六烷酯(MHHDC)。其中,HMODAz和HODEAz单体是通过酰基叠氮基和羟基AB型自缩聚而聚合的,而MHHDC单体是通过AB型自缩聚经氨基甲酸酯反应聚合的。在有和没有催化剂的情况下,在各种温度(50、60、80和110°C)下进行酰基叠氮基和羟基的自缩合反应。使用HMODAz在80°C且无催化剂的条件下进行的FTIR聚合研究表明,在开始的15-30分钟内原位形成了中间异氰酸酯基,进一步,摩尔质量增加,如SE