羟丙基纤维素接枝甲基丙烯酸丁酯共聚物的合成与表征

摘要

采用羟丙基纤维素(HPC)与甲基丙烯酸丁酯(BMA)为原料,通过乳液接枝共聚反应成功合成羟丙基纤维素接枝聚甲基丙烯酸丁酯共聚物(HPC-g-PBMA).利用红外光谱(IR)、X-射线衍射(XRD)和扫描电镜(SEM)对合成接枝产物进行了结构表征,测试了HPC-g-PBMA的溶解性能,利用热重分析(TG)、示差扫描量热分析(DSC)对合成接枝产物的热性能进行了分析.结果表明,HPC-g-PBMA的结构及表观形貌较HPC发生了改变,热塑性能得到增强并具有良好的抗强酸、抗强碱和抗有机溶剂侵蚀性能.通过正交试验设计,确定了该合成反应的最佳反应条件.图9表7参18%Hydroxypropyl cellulose (HPC) grafted with poly(butyl methacrylate) (PBMA) copolymer (HPC-gPBMA)was synthesized using emulsion copolymerization of the HPC monomer and butyl methacrylate (BMA).Structure of the grafted copolymer was described with Fourier transform-infrared (FT-IR) spectroscopy, X-ray diffraction (XRD) analysis, and scanning electronic microscope (SEM).Thermogravimetric analysis (TGA)and differential scanning calorimetry(DSC) were used to analyze thermodynamic properties, and solubility was also tested.Optimum synthetic conditions for HPC-g-PBMA were determined through an orthogonal experiment.Results indicated that the structure of HPC-g-PBMA differed from HPC with thermoplasticity of the graft copolymer improved.Due to a superior resistance to strong acids, strong base and organic solvent was obtained.