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采用溶液聚合方式,合成了具有两亲性梳型结构的聚甲基丙烯酸十二酯-马来酸酐共聚物P(LMA-MA)。使用傅里叶变换红外光谱(FT-IR)、核磁共振(1H-NMR)等检测手段对聚合物的组成结构进行了表征。在选择性溶剂(水)中制备了P(LMA-MA)两亲性梳型聚合物的胶束,通过Zeta电位粒径分析仪和透射电子显微镜(TEM)探讨了两亲性梳型聚合物在胶束化过程中胶束形态和尺寸的影响因素。实验表明,由于两亲性梳型聚合物的结构特点,P(LMA-MA)形成200nm以上尺寸的胶束;在浓度范围0.5 g/L-1.75 g/L、温度范围25℃-50℃和pH值范围4-8时,胶束可稳定形成和存在。

The poly(lauryl methacrylate-maleic anhydride) P(LMA-MA) having amphiphilic comb structure was synthesized by the solution polymerization method. The architectures of P(LMA-MA) were confirmed by Fourier transform infrared spectrum(FT-IR) and 1H nuclear magnetic resonance spectrum(1H-NMR). The micelles of the amphiphilic comb polymer P(LMA-MA) were prepared in water, various influencing factors and morphologies of the arnphiphilic comb polymers micellization were investigated by the particle size analyzer and transmission electron microscope (TEM). It shows that, due to the differences brought by comb structure, the micelles (size above 200nm) of amphiphilic comb polymer P(LMA-MA) are stable in the concentration range of 0.5 g/L--1.75 g/L, the pH range of 4--8, and the temperature range of 25℃ --50 ℃.

参考文献

[1] Lifeng Zhang;Adi Eisenberg .Crew-Cut Aggregates from Self-Assembly of Blends of Polystyrene-b-Poly(acrylic acid) Block Copolymers and Homopolystyrene in Solution[J].Journal of Polymer Science, Part B. Polymer Physics,1999(13):1469-1484.
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[4] Wang M.;Jiang M.;Ning FL.;Chen DY.;Liu SY.;Duan HW. .Block-copolymer-free strategy for preparing micelles and hollow spheres: Self-assembly of poly(4-vinylpyridine) and modified polystyrene[J].Macromolecules,2002(15):5980-5989.
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