Synthesis and characterization of castor oil based hybrid polymers and their polyurethane–urea/silica coatings
作者:Nikita Bhosale、Allauddin Shaik、Sisir Kumar Mandal
DOI:10.1039/c5ra20356b
日期:——
This AASCO was further reacted with isophorone diisocyanate at NCO : OH ratio of 1.6 : 1 to get the isocyanate terminated silica hybrid polyurethane prepolymers. This work provides an effective and promising way to modify the castor oil backbone for high-performance coating application. The present work deals with the structural modifications of castor oil (CO), a renewable resource, to develop functional
由蓖麻油,马来酸酐和不同重量百分比的甲基丙烯酸3-(三甲氧基甲硅烷基)丙酯(TMSPMA)通过自由基共聚合成了具有可水解–Si–OCH 3的新型丙烯酸酯化烷氧基硅烷蓖麻油(AASCO)。AASCO的特征是1 H,13C核磁共振(NMR),傅立叶变换红外(FTIR)光谱,凝胶渗透色谱(GPC)和差示扫描量热法(DSC)技术。使该AASCO与异佛尔酮二异氰酸酯在NCO∶OH比为1.6∶1的条件下反应,得到异氰酸酯封端的二氧化硅杂化聚氨酯预聚物。这项工作为改性蓖麻油骨架提供了一种有效而有前途的方法,以用于高性能涂料应用。目前的工作涉及蓖麻油(CO)(一种可再生资源)的结构改造,以开发功能性有机-无机杂化聚合物及其聚氨酯-脲/二氧化硅(PU-脲/ Si)涂层。为此,一种具有可水解–Si–OCH 3的新型丙烯酸化烷氧基硅烷蓖麻油(AASCO)通过自由基共聚,由CO,马来酸酐和不同重量百分比的甲基丙烯