以三羟甲基丙烷为核分子,2,2-二羟甲基丙酸为AB2型单体,合成了超支化聚酯(HBP-3).以月桂酸和苯甲酸为改性剂得到改性超支化聚酯HBP-4、HBP-5、HBP-6和HBP-7.采用红外光谱(FT-IR)、核磁共振(1H-NMR)和凝胶渗透色谱(GPC)对HBP-3的结构和分子量进行表征并测试了超支化聚酯的特性黏度,发现由三羟甲基丙烷合成了超支化聚酯的支化度在0.4～0.5之间,分子量接近理论值,分散性为1.75,特性黏度为6.35 mL/g.以甲苯二异氰酸酯三聚体为固化剂,考察了改性超支化聚酯的交联涂膜性能,发现单独用月桂酸改性制成的HBP-4涂膜硬度和附着力差,用苯甲酸改性得到的HBP-5在常温下呈固态,而以月桂酸和苯甲酸混合改性时则可以得到光泽度、附着力和柔韧性优异的涂膜.
参考文献
| [1] | 王延飞,沈本贤,曾庆健,荆红德.超支化聚合物改性醇酸树脂的性质研究[J].上海涂料,2006(04):1-3. |
| [2] | Bat E;Gunduz G;Kisakurek D;Akhmedov IM .Synthesis and characterization of hyperbranched and air drying fatty acid based resins[J].Progress in Organic Coatings: An International Review Journal,2006(4):330-336. |
| [3] | Claesson H.;Malmstrom E.;Johansson M.;Hult A. .Synthesis and characterisation of star branched polyesters with dendritic cores and the effect of structural variations on zero shear rate viscosity[J].Polymer: The International Journal for the Science and Technology of Polymers,2002(12):3511-3518. |
| [4] | Pion Florian;Kishore K. Jena;Shaik Allauddin .Preparation and Characterization of Waterborne Hyperbranched Polyurethane-Urea and Their Hybrid Coatings[J].Industrial & Engineering Chemistry Research,2010(10):4517-4527. |
| [5] | Hanselmann R.;Frey H.;Holter D. .Hyperbranched polymers prepared via the core-dilution slow addition technique: Computer simulation of molecular weight distribution and degree of branching[J].Macromolecules,1998(12):3790-3801. |
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