聚苯乙烯接枝聚乙二醇6000的制备及表征

Preparation and characterization of PEG6000-g-PS

以1,4-二氯甲氧基丁烷为氯甲基化试剂,通用级聚苯乙烯(PS)为原料,制备了氯甲基化聚苯乙烯(CMPS);将CMPS与聚乙二醇(PEG)6000采用碱催化法制备了PS接枝PEG6000聚合物(PEG6000-g-PS)。对CMPS,PEG6000-g-PS进行傅里叶变换红外光谱分析、X射线光电子能谱分析,对PS,PEG,PEG6000-g-PS进行差示扫描量热法分析、热重分析。结果表明:成功制备了PEG6000-g-PS,且接枝率为12.3%;PEG6000-g-PS的熔融温度为63.03℃,相变焓为15.313 J/g,起始分解温度为314℃,热稳定性良好。

Chloromethylated polystyrene(CMPS)was prepared with 1,4-dichloromethoxybutane as chloromethylation reagent and general polystyrene(PS)as raw material,which was reacted with polyethylene glycol(PEG)6000 to prepare a PS grafted PEG6000 polymer(PEG6000-g-PS)via alkali catalysis.CMPS and PEG6000-g-PS were characterized by Fourier transform infrared spectroscope(FTIR)and X-ray photoelectron spectroscope(XPS).Differential scanning calorimeter(DSC)and thermogravimetric(TG)analysis were used for PS,PEG and PEG6000-g-PS.The results show that PEG6000-g-PS is successfully prepared with the grafting ratio of 12.3%.The melting temperature,initial decomposition temperature and phase transition enthalpy of PEG6000-g-PS are 63.03℃,314℃ and 15.313 J/g respectively,representing excellent thermal stability.