摘要
以甲基丙烯酸甲酯和二乙醇胺为原料,由Michael加成反应制得N,N-二羟乙基-3-胺基丁酸甲酯单体,再用发散法使之与三甲醇丙烷(核)反应合成出超支化聚酯。将纳米TiO2做适当表面处理,再与超支化聚酯按一定比例复合,复合产品经超声、烘干处理得复合材料。考察了不同的原料配比对复合材料性能的影响,对合成的超支化聚酯及其复合材料用IR、XRD、TG等分析手段进行了表征,同时间接研究了超支化聚酯复合材料固化后的光催化吸附降解性能。结果表明:当甲基丙烯酸甲酯与二乙醇胺质量比为0.9时,合成的超支化聚酯具有较低的黏度和良好的溶解性及热稳定性。当纳米TiO2的添加质量分数为5%时,基本不改变合成产物各项性能,但由于纳米TiO2的加入复合,超支化聚酯复合材料比未复合的超支化聚酯对染料的光催化吸附降解性能提高了15%以上。
The N,N-hydroxyethyl-3-dimethylolbutyric methyl amine monomer is prepared with methyl methacrylate and diethanolamine as raw materials, which is further used to prepared hyperbranched polyester by reacting with trimethanol propane. The hyperbranched polyester/nano-TiO2 composites can be obtained by blending the surface treated nano-TiO2 with the hyperbranched polyester. The properties and structure of composite materials and hyperbranched polyester are characterized by various methods,including IR ,TG, and XRD. The photoeatalytic adsorption degradability is indirectly studied by immobilizing. The results show that, when the mass ratio of methyl methacrylate and diethanolamine is 0. 9, the hyperbranched polyester with lower viscosity, good solubility and thermal stability can be obtained. The properties of composite material almost do not change by blending 5% of nano-TiO2. However, compared with the unblended hyperbranched polyester, the performance of photocatalytic adsorption degradability for hyperbranehed polyester/nano-TiO2 composites is increased by 15%. Due to the simple and convenient preparation and operation process, this preparation method of composite material is very promising for the industrial application.
出处
《现代化工》
CAS
CSCD
北大核心
2012年第10期54-57,共4页
Modern Chemical Industry
