Study on the Selective Separation by Poly- (fumarate) Thin Films

聚富马酸酯薄膜选择性分离的研究

• 批准号: 04650723
• 负责人: SHIGEHARA Kiyotaka
• 金额: $ 0.38万
• 依托单位: Tokyo University of Agriculture and Technology
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for General Scientific Research (C)
• 财政年份: 1992
• 资助国家: 日本
• 起止时间: 1992 至 1993
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-04650723/
• 关键词: Gas Permeability; Gas Separation; Oxygen Enrichment; Selective Permeation; LB Film; Poly(fumarate); Gas Permeability; Gas Separation; Oxygen Enrichment; Selective Permeation; LB Film; Poly(fumarate)

Fumarate homo- and binary random copolymers of bulky substituents such as, di(isopropy1), di(tert-buty1), di(cyclohexy1), hexafluoroisopropy1 isopropy1, and bis(beta, beta-dimethy1phenety1) [abb., DiPF, DtBF, DcHF, F_6iP and BMPEF, resp.] were synthesized and thier thin film properties as for [O_2/N_2/]-separation or [water/alcohol]-separation material were studied.Among the binary random copolymers prepared from the either two monomers of DiPF, DtBF and DcHF, DtBF-based copolymers with DtBF content of 80mo1% showed highest gas-permeation constants [P_<02> and P_<N2>] and separation factor, alpha. It is noteworthy that P_<02> of more than 10^<-8> cm^3(STP)cm/cm^2・s・cmHg and alpha of more than 4.0 can be attained by such simple copolymerization as the random introduction of the foreign units to the DtBF-based polymer decreased the crystallinity.Although the attempts to [water/alcohol]-separation by pervaporation method were not successful due to the swelling of films, similar examination by "evapomeation" method revealed that PDiPF films are quite useful for concentrating alcohol especially when the concentration of alcohol is about 10%. PF_6iP or PBMPEF, hopefully more advanced evapomeation material, were not suitable for filming due to their stiffness. Further study to utilize LB-filming process will be continued.

大体积取代基的富马酸同质和二元无规共聚物，如二（异丙基）、二（叔丁基）、二（环己基）、六氟异丙基、异丙基和二（β， β -二甲基苯基）[abb.]、DiPF、DtBF、DcHF、F_6iP和BMPEF等。研究了它们作为[O_2/N_2/]分离材料和[水/醇]分离材料的薄膜性能。在由DiPF、DtBF和DcHF两种单体制备的二元无规共聚物中，DtBF含量为80mo1%的DtBF基共聚物具有最高的气体渗透常数[P_<02>和P_<N2>]和分离因子α。值得注意的是，通过这种简单的共聚可以得到P_<02>大于10^<-8 >cm ^3(STP)cm/cm^2·s·cmHg和α大于4.0的共聚，因为随机引入外来单元降低了dtbf基聚合物的结晶度。虽然由于膜的膨胀，用渗透蒸发法分离[水/醇]的尝试没有成功，但用“蒸发”法进行的类似检查表明，PDiPF膜对浓缩酒精非常有用，特别是当酒精浓度约为10%时。PF_6iP或PBMPEF，希望更先进的蒸发材料，由于其刚度不适合拍摄。将继续进一步研究利用lb -膜工艺。

项目成果

K.Shigehara 他3名: "Property of LB Films of Fumarate(Co)polymers" Die Makromol.Chem.(1994)

K.Shigehara 和其他 3 人：“富马酸酯（共）聚合物的 LB 薄膜的性能”Die Makromol.Chem.(1994)

K.Shigehara, R.Tomokiyo, N.Kaiya, N.Amaya: ""Property of LB Films of Fumarate (Co) Polymers"" Makromol.Chem.(in print). (1994)

K.Shigehara、R.Tomokiyo、N.Kaiya、N.Amaya：“富马酸（共）聚合物 LB 薄膜的特性”Makromol.Chem.（印刷中）。

K.Shigehara 他3名: "Selective Permeation of Poly(fumarate)thin Films" Die Makromol.Chem.(1994)

K.Shigehara 和其他 3 人：“聚（富马酸盐）薄膜的选择性渗透”Die Makromol.Chem.(1994)

K.Shigehara, R.Tomokiyo, N.Kaiya, N.Amaya: ""Selective Permeation of Poly (fumarate) Thin Films"" Makromol.Chem.(in print). (1994)

K.Shigehara、R.Tomokiyo、N.Kaiya、N.Amaya：“聚（富马酸盐）薄膜的选择性渗透”Makromol.Chem.（印刷中）。