三元无规接枝共聚物的合成及其自组装性能的研究SynthesisandSelf.PDF

2008 年第 66 卷 化 学 学 报 Vol. 66, 2008 第 16 期, 1884～1888 ACTA CHIMICA SINICA No. 16, 1884～1888 ·研究论文· 三元无规接枝共聚物的合成及其自组装性能的研究 茹敏良 戴炜枫 杜征臻 郎美东* (华东理工大学材料科学与工程学院 超细材料制备与应用教育部重点实验室 上海 200237) 摘要 通过甲基丙烯酸羟乙酯(HEMA)引发 ε- 己内酯(ε-CL)开环聚合得到带有双键的大分子预聚体甲基丙烯酸羟乙酯- 聚己内酯(HEMA-PCL), 该预聚体与 N-异丙基丙烯酰胺(NIPAAm)及丙烯酸(AAc) 自由基聚合得到一系列含有不同比例 组分的三元无规接枝共聚物. 研究了该聚合物的自组装性能. 通过 1H NMR, FTIR, 凝胶渗透色谱(GPC)对聚合物进行 结构和分子量的表征. 通过 TEM, DLS 与表面张力等方法表征其纳米粒子情况. 关键词 ε- 己内酯; 甲基丙烯酸羟乙酯; N-异丙基丙烯酰胺; 丙烯酸; 三元无规接枝共聚物; 自组装; 核壳结构 Synthesis and Self-assembly Behavior of Random Graft Terpolymers RU, Min-Liang DAI, Wei-Feng DU, Zheng-Zhen LANG, Mei-Dong* (Key Laboratory for Ultrafine Materials of Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237) Abstract The macromonomer of 2-hydroxyethyl methyacrylate-caprolactone (HEMA-PCL) was synthe- sized by the ring-opening polymerization of ε-caprolactone initiated by 2-hydroxyethyl methyacrylate (HEMA). The random graft terpolymers of NIPAAm-co-AAc-co-HEMA-g-PCL with varying mole ratios were subsequently synthesized by free radical polymerization of HEMA-PCL, N-isopropylacrylamide (NI- 1 PAAm) and acrylic acid (AAc), and characterized by H NMR, FTIR, gel permeation chromatograph, trans- mission electron microscopy, dynamic light scattering and surface tension were used for the investigation of the self-assembly of the random graft terpolym