聚乙二醇全氟壬烯基醚的合成与表面性能  

Preparation and Surface Activities of Polyethylene Glycol Perfluorous Nonenyl Ethers

作　　者：史鸿鑫[1] 周浩淼[1] 沈海民[1] 武宏科[1] 

机构地区：[1]浙江工业大学化工学院,浙江杭州310032

出　　处：《精细化工》2015年第1期42-46,共5页Fine Chemicals

基　　金：浙江省科技厅资助项目(2011R09002-10)~~

摘　　要：以全氟壬烯(C9F19)和聚乙二醇(PEG-n)为主要原料合成聚乙二醇全氟壬烯基单醚C9F17—PEG-n和双醚C9F17—PEG-n—C9F17,研究了分子结构与其水溶液表面性能之间的关系。测定了C9F17—PEG-n和C9F17—PEGn—C9F17的表面张力(γ)、临界胶束浓度(CMC)、浊点、泡沫性能和乳化性能。结果表明:双醚比单醚的分子面积(A)小、吸附量[Γ2(1)]大,浊点低、对甲苯的乳化性能差;其水溶液的表面活性好、发泡体积大。对C9F17—PEGn或C9F17—PEG-n—C9F17而言,随着n上升,其A增加,Γ2(1)下降,对甲苯的乳化性能趋好;其水溶液的CMC和γCMC上升,浊点升高,发泡体积先升高后下降,n=1 000时发泡体积最大。Polyethylene glycol perfluorononyl monoethers（C9F17—PEG-n） and diethers（C9F17—PEG-n—C9F17） were prepared from polyethylene glycol（PEG-n） and perfluorononene（C9F18）,and the relations of surface performance to the molecular structure of C9F17—PEG-n and C9F17—PEG-n—C9F17were investigated.Their surface tension（γ）,critical micelle concentrations（CMC）,cloud points,foaming characteristics and emulsifiabilities were studied.C9F17—PEG-n—C9F17） has smaller molecular area（A）,greater adsorption quantity [Γ2（1）],lower cloud point,and worse emulsifiability for toluene,but better surface activities and greater foaming volume of their aqueous solutions than C9F17—PEG-n.For C9F17—PEG-n or C9F17—PEG-n—C9F17,Γ2^（1）declines,A increases and the emulsifiability becomes better for toluene along with the increase of n;the CMC,γCMCand cloud point of their aqueous solutions ascend,and their foaming volumes increase and then decline and reach the biggest value at n = 1 000.

关 键 词：氟碳表面活性剂 表面张力 泡沫性能 乳化性能 浊点 

分 类 号：TQ423.21[化学工程]