利用“准一步法”,以甲基丙烯酸甲酯与二乙醇胺反应合成出AB2型单体,引入中心核三羟甲基丙烷,通过控制反应条件,合成出了不同代数的端羟基超支化聚酯H1、H2、H3.测得其在常温下的特征粘度分别为3.54mL/g、2.97 mL/g和2.62 mL/g.且随着温度升高,相应超支化聚合物的特征粘度降低.同时以其为改性剂,采用原位聚合法对一系列水性聚氨酯(PU)进行了交联改性.研究结果表明,与线性PU相比,所得超支化改性水性PU成膜后均具有较好的耐水性和热性能.
参考文献
| [1] | Ema Zagar;Majda Zigon .Aliphatic hyperbranched polyesters based on 2,2-bis(methylol)propionic acid—Determination of structure, solution and bulk properties[J].Progress in Polymer Science,2011(1):53-88. |
| [2] | Postnova I;Silant' ev V;Kim M et al.Hyperbranched polyglycerol hydrogels prepared through biomirnetic mineralization[J].Colloids and Surfaces B:Biointerfaces,2013,103(03):312. |
| [3] | Banik I;Sain M .Nanoclay modified water-blown polyurethane foams derived from bifunctional soybean oil-based polyol[J].Polym-Plast Techn Eng,2010,49(03):701. |
| [4] | Matthias S .Hyperbranched polymers:Phase behavior and new applications in the field of chemical engineering[J].Fluid Phase Equilibria,2006,241(08):155. |
| [5] | Chattopadhyay DK;Sreedhar B;Raju KVSN .Influence of varying hard segments on the properties of chemically crosslinked moisture-cured polyurethane-urea[J].Journal of Polymer Science, Part B. Polymer Physics,2006(1):102-118. |
| [6] | Cragg L H .The terminology of intrinsic viscosity and related functions[J].Journal of Colloid Science,1946,1(03):261. |
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