超支化聚(β-环糊精)的合成与表征

Synthesis and Characterization of Hyperbranched Poly(β-cyclodextrin)

通过硅氢加成反应,以ABx型功能化β-环糊精大单体为原料,采用一步法合成出新型超支化聚(β-环糊精)高分子.ABx大单体由单取代对甲苯磺酰化β-CD依次与烯丙基胺、1,1,3,3-四甲基二硅氧烷(含氢双封头)及丙烯酰氯反应得到.采用1H NMR,13C NMR,29S iNMR和飞行时间质谱对ABx大单体及其聚合物的结构进行了表征.利用凝胶渗透色谱/多角度激光光散射(SEC/MALLS)联用仪得到了超支化聚(β-环糊精)的分子量、分子量分布及本体黏度.

Hyperbranched poly（β-cyclodextrin） was successfully prepared via hydrosilylation from AB type cyclodextrin monomer. The molecular structures of ABx monomer and hyperbranched polymer were characterized with ^1H NMR, ^13C NMR, ^29Si NMR, MALDI-TOF MS and elemental analysis. In addition, molecular weight, molecular weight distribution（MWD） and intrinsic viscosity of hyperbranched polymer were obtained via size exclusion chromatography/multi-angle laser light scattering（SEC/MALLS） technology.