SOLUTION PERFORMANCE AND APPLICATION OF WELL-DEFINED FLUORINATED BLOCK COPOLYMERS CONTAINING SULFONIC GROUPS

WANG Feng; LI Hong; ZHANG Zhaobin; HU Chunpu; WU Shusen

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SOLUTION PERFORMANCE AND APPLICATION OF WELL-DEFINED FLUORINATED BLOCK COPOLYMERS CONTAINING SULFONIC GROUPS

Research Article | 更新时间：2021-03-19

- SOLUTION PERFORMANCE AND APPLICATION OF WELL-DEFINED FLUORINATED BLOCK COPOLYMERS CONTAINING SULFONIC GROUPS
- Acta Polymerica Sinica Issue 2, Pages: 258-263(2005)
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- Published：20 April 2005，
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WANG Feng, LI Hong, ZHANG Zhaobin, HU Chunpu, WU Shusen. SOLUTION PERFORMANCE AND APPLICATION OF WELL-DEFINED FLUORINATED BLOCK COPOLYMERS CONTAINING SULFONIC GROUPS. [J]. Acta Polymerica Sinica (2):258-263(2005)
DOI：

WANG Feng, LI Hong, ZHANG Zhaobin, HU Chunpu, WU Shusen. SOLUTION PERFORMANCE AND APPLICATION OF WELL-DEFINED FLUORINATED BLOCK COPOLYMERS CONTAINING SULFONIC GROUPS. [J]. Acta Polymerica Sinica (2):258-263(2005) DOI：

摘要

利用原子转移自由基聚合以及随后的磺化反应合成了一系列具有不同含氟量和磺化的嵌段共聚物P（SSt-b-FNEMA）（PSSF）.通溶液粘度和表面张力的测定

研究了该含氟嵌段共聚物独物的溶液行为

实验结果表明

PSSF能显著降低N-甲基吡咯烷酮溶液的表面张力

然而

与N-甲基吡咯烷酮溶液的表面性能不同

PSSF不能显著地降低水溶液的表面张力；当PSSF中和成钠盐后

水溶液的表面张力趋于一致

进一步通过TEM、1H-NMR考察了PSSF在不同溶液中的形态

发现PSSF在水溶液中以核壳结构存在

而在N-甲基吡咯烷酮溶液中主要以胶束的形式存在

初步考察了PSSF对聚氨酯脲-丙烯酸酯（PUA）复合水分散洲的改性效果

发两只需加入少量的PSSF

就可使PUA膜的吸水率从原来的10wt%下降到4wt%.

Abstract

A series of well-defined fluofinmed block copolymers with suffonic groups P(SSt-b-FNEMA)(PSSF) were synthesized by atom transfer radical polymerization (ATRP)

followed by sulfonation reaction of polystyrene blocks in these block copolymers．The unique solution properties of these block eopolymers were studied by viscosity and surface tension measurements．The experimental results showed that the fluorinated block copolymers exhibited higher surface activity in N-methyl pyrrolidone solutions than in aqueous solutions．Interestingly

the surface tensions of aqueous solutions for sodium salt systems are nearly the same

resulting from the aggregation behavior of sodium salts of PSSF in water．The morphologies of these block copolymers in organic solvents and water were further observed by TEM and 1H-NMR．It was foand that PssF had a core-shell structure in aqueous solutions．but had a mieelle structure in N-methyl pyrrolidone solutions．Furthermore

poly (urethaneurea-acrylate) (PUA) aqueous dispersions wele modified by adding a small amount of PSSF It was found that the water absorption ratio of the modified PUA films dropped appreciably from 10 wi％to 4 wt％ because of the addition of PSSF．

关键词

含氟嵌段共聚物溶液性能形态聚氨酯

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扬州大学化学化工学院

扬州大学江苏省环境工程与环境材料重点实验室

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