中文摘要：

结合原子转移自由基活性聚合（ATRP）和点击化学中铜催化的炔基/叠氮偶极环加成（CuAAC）反应,可控合成两亲性环状聚（己内酯-b-乙烯基吡咯烷酮）嵌段共聚物（Cyclic-PCL-b-PVP）,通过傅里叶变换红外光谱（FT-IR）、核磁共振氢谱（~1HNMR）和凝胶渗透色谱（GPC）分别表征聚合物的结构、分子量及分子量分布,表明已成功合成两亲性环状聚（己内酯-b-乙烯基吡咯烷酮）。采用热重分析（TGA）和接触角测量研究了两亲性共聚物的热力学性能和亲水性能,结果表明,相比于线形聚（己内酯-b-乙烯基吡咯烷酮）（Linear-PCL-b-PVP）,相应的环状嵌段共聚物的热稳定性明显提高,亲水性亦有所变化。

英文摘要：

The amphiphilic cyclic-poly（ε-caprolactone）-b-poly（N-vinylpyrrolidone） copolymer （cyclic-PCL-b-PVP） was syn- thesized via atom transfer radical polymerization （ATRP） and click chemistry. The structure, molecular weight and molecular weight distribution of the eopolymer were characterized by FT-IR, 1 H-NMR, GPC respectively. The thermodynamic properties and the hy- drophilicity of the copolymer were studied by TGA and contact angle measurement. Our results indicated an evidently higher thermal stability and a different hydrophilicity of the cyclic copolymer compared with linear-PCL-b-PVP.