| 氟化单元封端的不同聚合度PBMA甲苯溶液气/液界面结构 |
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| 引用本文： | 张丽,李清文,张蓉平,袁大想,左彪,杨菊萍,卢晓林,王新平,沈之荃. 氟化单元封端的不同聚合度PBMA甲苯溶液气/液界面结构[J]. 中国科学:化学, 2011, 0(7): 1127-1136 |
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| 作者姓名： | 张丽 李清文 张蓉平 袁大想 左彪 杨菊萍 卢晓林 王新平 沈之荃 |
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| 作者单位： | 教育部先进纺织材料与制备技术重点实验室浙江理工大学化学系;教育部高分子合成与功能构造重点实验室浙江大学高分子科学研究所; |
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| 基金项目： | 国家自然科学基金(20874089,20904048&20704038); 浙江省教育厅一般项目(Y200805980)支持 |
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| 摘 要： | 采用ATRP技术合成具有不同聚合度的末端连接甲基丙烯酸全氟辛基乙酯(FMA)单元的聚甲基丙烯酸丁酯(PBMAm-ec-PFMAn).利用和频振动光谱(SFG)和表面张力测定技术研究了各种氟化聚合物溶液的气/液界面结构.发现PBMAm-ec-PFMAn甲苯溶液的表面活性及其气/液界面的结构与两种结构单元数密切相关.当PFMA聚合度(n)大约为4和6时,聚合物溶液的表面张力随着PBMA聚合度的增加从21增加到25mN/m(该值与PBMA均聚物溶液相同).SFG的研究结果表明PBMA段较长时溶液表面被PBMA所占据.PBMA段较短时,PFMA组分吸附在溶液表面,排列比较有序且紧密堆积.当PBMA末端只有1个FMA单元时,其甲苯溶液的表面张力随PBMA段长稍有增加(从22增加到23mN/m),其值介于21与25mN/m之间.研究表明当PBMA段较短时,可能聚合物中的氟化组分吸附在溶液表面,但其排列的有序性较差.随着PBMA聚合度的增加,氟化组分与PBMA组分可能同时占据在溶液表面,这时其表面张力大约为23mN/m.
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| 关 键 词： | 氟化聚甲基丙烯酸丁酯 气/液界面结构 表面张力 和频振动光谱 |
Liquid/air interfacial structures of various molecular weights PBMA end-capped with 2-perfluorooctylethyl methacrylate units in toluene solutions |
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| ZHANG Li ,LI QingWen ,ZHANG RongPing ,YUAN DaXiang ,ZUO Biao ,YANG JuPing ,LU XiaoLin ,WANG XinPing , SHEN ZhiQuan Key Laboratory of Advanced Textile Materials , Manufacturing Technology,Ministry of Education. Liquid/air interfacial structures of various molecular weights PBMA end-capped with 2-perfluorooctylethyl methacrylate units in toluene solutions[J]. Scientia Sinica Chimica, 2011, 0(7): 1127-1136 |
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| Authors: | ZHANG Li LI QingWen ZHANG RongPing YUAN DaXiang ZUO Biao YANG JuPing LU XiaoLin WANG XinPing & SHEN ZhiQuan Key Laboratory of Advanced Textile Materials Manufacturing Technology Ministry of Education |
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| Affiliation: | ZHANG Li 1,LI QingWen 1,ZHANG RongPing 1,YUAN DaXiang 1,ZUO Biao 1,YANG JuPing 1,LU XiaoLin 1,WANG XinPing 1 & SHEN ZhiQuan 2 1 Key Laboratory of Advanced Textile Materials and Manufacturing Technology,Ministry of Education,Department of Chemistry,Zhejiang Sci-Tech University,Hangzhou 310018,China 2 Key Laboratory of Macromolecule Synthesis and Functionalization,Department of Polymer Science,Zhejiang University,Hangzhou 310027,China |
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| Abstract: | Various molecular weight poly(butyl methacrylates) (PBMA) end-capped with 2-perfluorooctylethyl methacrylate (FMA) units (PBMAm-ec-FMAn) have been synthesized by atom transfer radical polymerization (ATRP).The liquid/air interfacial structure of PBMAm-ec-PFMAn in toluene solutions was investigated by surface tension measurement and surface-sensitive sum frequency generation vibrational spectroscopy (SFG).The results indicate that the surface activity of PBMAm-ec-PFMAn toluene solution is related to the degr... |
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| Keywords: | fluorinated poly(butyl methacrylates) liquid/air interface structure surface tension sum frequency generation vibrational spectroscopy (SFG) |
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