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采用再生电子转移催化剂原子自由基聚合(ARGET ATRP)的方法,使甲基丙烯酸甲酯(MMA)在纳米纤维素(NCC)表面自增长,得到聚甲基丙烯酸甲酯(PMMA)接枝改性的NCC。通过傅里叶变换红外光谱(FT-IR)、X射线衍射分析(XRD)等测试方法对接枝改性前后的NCC的性能和结构进行了分析;采用凝胶渗透色谱(GPC)测定合成的PMMA的分子量及其分布。结果表明PMMA的分子量为8000左右,分子量分布较窄(Mw/Mn=1.11),说明ARGET ATRP可以有效控制NCC表面接枝PMMA聚合的均一性。
The method of ARGET ATRP was used to self-grow methyl methacrylate (MMA) on the surface of nanocellulose (NCC) to obtain the graft modification of polymethylmethacrylate (PMMA) NCC. The properties and structures of NCC before and after graft modification were analyzed by Fourier transform infrared spectroscopy (FT-IR), X-ray diffraction (XRD) and other testing methods. The gel permeation chromatography (GPC) Molecular Weight and Distribution of PMMA. The results showed that the molecular weight of PMMA was about 8000, and the molecular weight distribution was narrow (Mw / Mn = 1.11), indicating that ARGET ATRP can effectively control the polymerization of PMMA on NCC surface.