纤维素接枝2-（全氟辛基）乙基甲基丙烯酸酯共聚物的制备和表征

摘要

In this paper, the cellulose-g-2-(perfluorooctyl) ethyl methacrylate copolymer (cellulose-g-PFOEMA) was synthesized via the atomic transfer radical polymerization (ATRP). The cellulose macromolecular initiator (cell-BiB) was obtained by reaction with 2-bromoisobutyryl bromide in LiCl/DMAc solution. Under the catalysis of PMDETA/CuBr, 2-(perfluorooctyl) ethyl methacrylate ester monomers were initiated to graft to cell-BiB homogeneously via ATRP to obtain cellulose-g-PFOEMA. The structure and property of cellulose-g-PFOEMA was characterized by FT-IR, XPS and contact angle (CA) analysis. FT-IR and XPS results showed that fluorine-containing monomers were grafted to cellulose successfully. The water contact angle of cellulose-g-PFOEMA was 154.8º, revealing a superhydrophobic property.%利用原子转移自由基聚合法（ATRP）制备了纤维素接枝2-(全氟辛基)乙基甲基丙烯酸酯共聚物（Cellulose-g-PFOEMA）。纤维素采用氯化锂/N,N-二甲基乙酰胺（LiCl/DMAc）溶解，通过2-溴异丁酰溴与纤维素均相酰化反应制得纤维素基大分子引发剂（Cell-BiB)。在PMDETA/CuBr催化作用下，引发2-(全氟辛基)乙基甲基丙烯酸酯进行均相 ATRP 聚合反应，制得 Cellulose-g-PFOEMA，并通过FT-IR、XPS和接触角测试分析了该接枝共聚物的结构和性能。FT-IR和XPS测试表明含氟单体成功接枝于纤维素上，Cellulose-g-PFOEMA的接触角达到154.8º，具有超疏水性。