聚苯乙烯-co-聚(2,3,4,5,6-五氟苯乙烯)共聚物: 合成及其多孔薄膜的制备

doi:10.6023/A1112264

化学学报 ›› 2012, Vol. 70 ›› Issue (9): 1125-1130.DOI: 10.6023/A1112264 上一篇下一篇

研究简报

聚苯乙烯-co-聚(2,3,4,5,6-五氟苯乙烯)共聚物: 合成及其多孔薄膜的制备

吕会朝^a, 张成潘^a,b, 黄晋^a, 赵巧玲^a, 马志^a, 肖吉昌^a,b

a. 中国科学院上海有机化学研究所上海 200032;
b. 中国科学院有机氟化学重点实验室中国科学院上海有机化学研究所上海 200032

投稿日期:2011-12-26 修回日期:2012-03-07 发布日期:2012-05-18
通讯作者: 马志; 肖吉昌 E-mail:mazhi728@sioc.ac.cn; jchxiao@sioc.ac.cn
基金资助:
中国科学院有机氟化学重点实验室开放基金资助项目.

Polystyrene-co-poly(2,3,4,5,6-pentafluoro styrene) Copolymers: Synthesis and Fabrication of Their Porous Films

Lü Huichao^a, Zhang Chengpan^a,b, Huang Jin^a, Zhao Qiaoling^a, Ma Zhi^a, Xiao Jichang^a,b

a. Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai 200032;
b. Key Laboratory of Organofluorine Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai 200032

Received:2011-12-26 Revised:2012-03-07 Published:2012-05-18
Supported by:
Project supported by Key Laboratory of Organofluorine Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences.

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摘要/Abstract

利用原子转移自由基聚合(ATRP)方法, 分别在三氟甲苯、含氟离子液体以及三氟甲苯/含氟离子液体混合溶剂体系中合成了聚苯乙烯-co-聚(2,3,4,5,6-五氟苯乙烯)(PS-co-PPFS)共聚物, 通过¹H NMR、¹⁹F NMR、元素分析以及凝胶渗透色谱法(GPC)对所得聚合物的分子链结构和组成进行了分析和表征. 随后, 利用静态呼吸图法分别在CS₂, CHCl₃ 和CH₂Cl₂ 中制备了有序多孔薄膜, 用扫描电子显微镜(SEM)观察其表面形貌, 并与利用分子量大小相当的聚苯乙烯均聚物(PS)制备的多孔薄膜进行了对比. 研究结果表明: 在三氟甲苯和含氟离子液体溶剂体系中, 均可利用ATRP 聚合方法获得窄分子量分布的PS-co-PPFS 共聚物(M_n＝5200～7900 g·mol^-1, i>M_w/M_n＝1.12～1.22). 对聚合物薄膜的扫描电子显微镜(SEM)观察和分析显示: 分别以CS₂, CHCl₃ 和CH₂Cl₂ 作为溶剂, 利用静态呼吸图法均可制备出PS-co-PPFS 共聚物多孔薄膜. 然而, 与在CHCl₃ 和CH₂Cl₂ 中制备的PS 均聚物多孔薄膜的表面形貌不同的是, PS-co-PPFS 共聚物多孔薄膜呈现出无序排列、平均孔径大小不同的两种孔结构; 在CHCl₃ 中制备所得薄膜的孔结构有序性相对较好, 两种孔的平均孔径分别为0.75 和0.37 μm.

关键词: 聚苯乙烯-co-聚(2,3,4,5,6-五氟苯乙烯)共聚物, 原子转移自由基聚合, 呼吸图, 多孔膜

Well-defined polystyrene-co-poly(2,3,4,5,6-pentafluoro styrene) (PS-co-PPFS) copolymers were synthesized by atomic transfer radical polymerization (ATRP) in trifluorotoluene, fluorinated ionic liquid and trifluorotoluene/fluorinated ionic liquid solvent systems, respectively. The chain structure and component of such copolymers were characterized by ¹H NMR, ¹⁹F NMR, elemental analysis and GPC. Porous films of PS-co-PPFS copolymers were fabricated by static breath-figure method in CS₂, CHCl₃ and CH₂Cl₂, respectively. The morphologies of such porous films were observed by scanning electron microscopy (SEM) and compared with those of PS homopolymer with similar molecular weight. The results showed that PS-co-PPFS copolymers with narrow molecular weight distribution (M_n＝5200～7900 g·mol^-1, i>M_w/M_n＝ 1.12～1.22) can be synthesized via ATRP in trifluorotoluene and fluorinated ionic liquid, respectively. The SEM observation indicated that PS-co-PPFS copolymer porous films can be fabricated with CS₂, CHCl₃ and CH₂Cl₂ as solvent, respectively. While, different from PS analogues, PS-co-PPFS copolymer porous films showed less ordered pore structures with two different average pore sizes. The pores of such film fabricated in CHCl₃ were in better order with two average pore sizes of 0.75 and 0.37 μm, respectively.

Key words: polystyrene-co-poly(2,3,4,5,6-pentafluoro styrene) copolymer, atomic transfer radical polymerization, breath figure, porous film

引用此文

吕会朝, 张成潘, 黄晋, 赵巧玲, 马志, 肖吉昌. 聚苯乙烯-co-聚(2,3,4,5,6-五氟苯乙烯)共聚物: 合成及其多孔薄膜的制备[J]. 化学学报, 2012, 70(9): 1125-1130.

Lü Huichao, Zhang Chengpan, Huang Jin, Zhao Qiaoling, Ma Zhi, Xiao Jichang. Polystyrene-co-poly(2,3,4,5,6-pentafluoro styrene) Copolymers: Synthesis and Fabrication of Their Porous Films[J]. Acta Chimica Sinica, 2012, 70(9): 1125-1130.

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聚苯乙烯-co-聚(2,3,4,5,6-五氟苯乙烯)共聚物: 合成及其多孔薄膜的制备

Polystyrene-co-poly(2,3,4,5,6-pentafluoro styrene) Copolymers: Synthesis and Fabrication of Their Porous Films

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