基于超支化聚合物制备单分子纳米胶囊及对其包裹客体能力的研究

采用十六酰氯将商品超支化聚甘油醇部分酯化,再将残留的羟基转化为丙烯酸酯或甲基丙烯酸酯基,得到了两亲性超支化聚合物。通过1H NMR求得羟基的酯化度和所得两亲性超支化聚合物的数均分子量。此聚合物作为反相胶束型的单分子纳米胶囊,可用来包裹亲水性染料。用紫外光谱评价了纳米胶囊对染料的包裹能力。结果表明,与不含功能基的单分子纳米胶囊相比,带有少量丙烯酸酯基的纳米胶囊可以包裹更多的亲水性染料,且含丙烯酸酯基比含甲基丙烯酸酯基的纳米胶囊包裹效果更明显。

Synthesis of Unimolecular Nanocapsules Based on Hyperbranched Polymers and Their Encapsulation Behavior Study

Commercially available hyperbranched polyglycerol polyols were esterified partially by palmitoyl chloride.Part of the residual hydroxyl groups of the obtained amphiphilic hyperbranched polymers were additionally transformed into acrylate or methacrylate groups.The degree of esterification and molecular weight of the resulted amphiphilic hyperbranched polymers were caculated via()~1H NMR.All the resulted amphiphilic hyperbranched polymers were utilized as inverted-micelle type unimolecular nanocapsules for t...