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Preparation of large,ultra-flexible and free-standing nanomembranes of metal oxide-polymer composite and their gas permeation properties

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Clean Energy 2017年第1期1卷 80-89页

作者： Anteneh Mersha Roman Selyanchyn Shigenori Fujikawa Graduate School of Engineering Kyushu UniversityFukuoka 819-0395Japan WPI International Institute for Carbon-Neutral Energy Research(WPI-I2CNER) Kyushu UniversityFukuoka 819-0395Japan Center for Molecular Systems(CMS) Kyushu UniversityFukuoka 819-0395Japan Laboratory for Chemistry and Life Science Tokyo Institute of Technology4259 NagatsutachoMidori-kuYokohama226-8503Japan

In this work,fabrication of free-standing nanomembranes of metal oxide(MO_(x))and polymers by simple spin-coating method is ***,double-layer nanomembranes containing MO_(x) and epoxy resin of polyethyleneimine and poly[(o-cresyl glycidyl ether)-co-formaldehyde]were ***-standing nanomembranes were successfully prepared,but defects formed in the metal oxide nanolayer during sharp bending of the *** overcome fragility of MO_(x) nanolayer,poly(vinyl alcohol)nanolayers were introduced between MO_(x) nanolayers by layer-by-layer(LbL)assembly *** LbL nanomembrane was also free-standing and was highly flexible during macroscopic membrane *** after transfer of the LbL nanomembrane onto a porous support,it did not have apparent cracks,confirmed by scanning electron microscopy(SEM).The LbL nanomembrane sustained low gas permeance,confirming the absence of significant defects,although it shows excellent *** believe that the presented LbL nanomembrane could be a platform useful for the design of molecular nanochannels,which is the next challenge for efficient gas separation.

关键词： nanomembranes free-standing film ultrathin film layer-by-layer assembly metal oxide gas permeation

SYNTHESIS OF NaA ZEOLITE MEMBRANE FROM CLEAR SOLUTION AND ITS gas permeation PROPERTIES

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Chinese Journal of Catalysis 1999年第4期20卷 12-13页

作者： Xu Xiaochun, Liu Jie, Zhu Bing, Fang Lianqing, Yang Weishen,Xiong Guoxing, Lin Liwu (State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics,The Chinese Academy of Sciences, Dalian 116023) State Key Laboratory of Catalysis Dalian Institute of Chemical Physics Chinese Academy of Sciences Dalian 116023 China

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Ｔｈｅｕｓｅｏｆｚｅｏｌｉｔｅｍｅｍｂｒａｎｅｓｉｎｓｅｐａｒａｔｉｏｎｏｒｃｏｍｂｉｎｅｄｒｅａｃｔｉｏｎａｎｄｓｅｐａｒａｔｉｏｎｐｒｏｃｅｓｅｓｉｓｖｅｒｙａｔｒａｃｔｉｖｅ．Ａｄｖａｎｔａｇｅｓｏｆｕｓｉｎｇｓｕｃｈａｔｙｐｅｏｆｍｅｍｂｒａ...

关键词： NaA zeolite membrane hydrothermal synthesis gas permeation clear solution

permeation　OF　PURE　gasES　ON　A　SILICALITE-1　TUBULAR　MEMBRANE

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Chinese Journal of Catalysis 1997年第1期 4-5页

作者： Cheng Mojie, Xu Xiaochun, Yang Weishen, Liu Jie, Yang Yashu, Xu Yide, Lin Liwu (State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023)

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ＰＥＲＭＥＡＴＩＯＮＯＦＰＵＲＥＧＡＳＥＳＯＮＡＳＩＬＩＣＡＬＩＴＥ┐１ＴＵＢＵＬＡＲＭＥＭＢＲＡＮＥＣｈｅｎｇＭｏｊｉｅ，ＸｕＸｉａｏｃｈｕｎ，ＹａｎｇＷｅｉｓｈｅｎ，ＬｉｕＪｉｅ，ＹａｎｇＹａｓｈｕ，ＸｕＹｉｄｅ，ＬｉｎＬｉｗｕ（ＳｔａｔｅＫｅｙ...

关键词： Silicalite 1 Alumina Composite tubular membrane gas permeation

gas TRANSPORT PROPERTIES OF A POLYIMIDE BASED ON 2, 2-BIS (3, 4-DECARBOXYPHENYL) HEXAFLUOROPROPANE AND meta-PHENYLENEDIAMINE

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Chinese Journal of Polymer Science 1998年第1期16卷 86-90页

作者：徐志康徐又一 Springer Jürgen Department of Polymer Science & Engineering Zhejiang University Hangzhou 310027 China Institute of Technical Chemistry Technical University of Berlin Berlin 10623 Germany

By means of a vacuum time-lag method, gas transport properties of a polyimide based on 2,2-bis(3,4-decarboxyphenyl) hexafluoropropane dianhydride (6FDA) and meta-phenylenediamine (mPDA) have been measured as a function of upstream pressure and temperature. The results show that no gas-induced plasticization occurs for this polyimide in the upstream pressure range from 1 atm to 20 atm. The temperature dependence of P and D can be described by the Arrhenius equations. The activation energies of permeation and diffusion were obtained for the gas/polymer pair studied and correlated with the size of penetrant gas.

关键词： polyimide membrane gas permeation gas separation

Water-stable ZIF-300/Ultrason? mixed-matrix membranes for selective CO_2 capture from humid post combustion flue gas

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Chinese Journal of Chemical Engineering 2018年第5期26卷 1012-1021页

作者： Muhammad Sarfraz M. Ba-Shammakh Department of Polymer and Process Engineering University of Engineering and Technology Lahore 54890 Pakistan Department of Chemical Engineering King Fahd University of Petroleum and Minerals Dhahran 31261 Saudi Arabia

Water stable mixed-matrix membranes(MMMs) were developed to help control the global warming by capturing and sequestrating carbon dioxide(CO_2) from post-combustion flue gas originated from burning of fossil *** of different compositions were prepared by doping glassy polymer Ultrason? S 6010(US) with nanocrystals of zeolitic imidazolate frameworks(ZIF-300) in varying degrees. Solution-casting technique was used to fabricate various MMMs to optimize their CO_2 capturing performance from both dry and wet gases. The prepared composite membranes indicated enhanced filler-polymer interfacial adhesion, consistent distribution of nanofiller, and thermally established matrix configuration. CO_2 permeability of the membranes was enhanced as demonstrated by gas sorption and permeation experiments performed under both dry and wet conditions. As compared to neat Ultrason? membrane, CO_2 permeability of the composite membrane doped with 40 wt% ZIF-300 nanocrystals was increased by four times without disturbing CO_2/N_2 ideal selectivity. In contrast to majority of previously reported membranes, key features of the fabricated MMMs include their structural stability under humid conditions coupled with better and unaffected gas separation performance.

关键词： Hydrophobic MMMs ZIF-300 gas permeation CO2 capture Permselectivity

MORPHOLOGIES AND gas SEPARATION PROPERTIES OF MELT-SPUN ASYMMETRIC POLY(4-METHYL-1-PENTENE)HOLLOW FIBER MEMBRANES

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Chinese Journal of Polymer Science 2003年第3期21卷 369-372页

作者：徐志康 Institute of Polymer Science Zhejiang University Hangzhou 310027China

Poly(4-methyl-1-pentene) (PMP) hollow fiber membranes were prepared by the melt-spun and cold-stretch(MSCS) method. Scanning electronic microscopy (SEM) was used to characterize the section and surface structures of themembranes with special asymmetric structure. The preliminary results of gas permeation measurements indicated that the resultant hollow fiber membranes have the potential ability for oxygen/nitrogen separation.

关键词： Poly(4-methyl-1-pentene) Asymmetric membranes Hollow fiber membrane gas permeation O_2/N_2 Separation

PREPARATION OF ASYMMETRIC POLYETHERKETONE FLAT AND HOLLOW FIBER MEMBRANES FOR gas SEPARATION USING ACETIC ACID BASED COAGULANTS

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Chinese Journal of Polymer Science 2008年第3期26卷 263-273页

作者：杨继萍 Philip J.Brown School of Material Science and Engineering Beihang UniversityBeijing 100083China School of Materials Science and Engineering Clemson UniversitySC29634USA

Membranes for gas separation have developed significantly in the last twenty years,however,there is still a need for high temperature and chemically resistant membranes that exhibit good selectivity and gas *** study examines the fundamental properties of polyetherketone (PEK,a thermally stable and chemically resistant polymer) membranes prepared using concentrated sulphuric acid (98% H_2SO_4) as the ***-solvents used in the work included acetic acid,ethanol,methanol,glycerol,and water....

关键词： Polyetherketones Membranes gas permeation Internal coagulant effect Morphology

STUDIES ON THE PERMEABILITY OF P VC/EBBA OVERLAPPED ULTRATHIN COMPOSITE MEMBRANES MODIFIED BY PLASMA-POLYMERIZATION WITH FLUOROCARBON MONOMERS

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Chinese Journal of Polymer Science 1989年第2期7卷 124-131页

作者：傅秀城金熹高梶山千里 Institute of Chemistry Academia SinicaBeijing.China Department of Applied Chemistry Faculty of EngineeringKyushu UniversityFukuokaJapan

The PVC/EBBA ultrathin composite membranes with thickness of about 100 nm were prepared by spreading the solution on water surface. The overlapped composite membrane showed a characteristic aggregation structure in which the polymer matrix exists as a three-dimensional spongy network and the liquid crystal domains werc observed. Tne surface modification for the overlapped membranes was carried out by means of plasma-polymerization with the monomers of fluorocarbon compounds. Both Arrhenius plots of permeability coefficients for oxygen ((?)_O_2) in the membrane samples before and after modification showed significant increase in the vicinity of the T_(KN) of EBBA.

关键词： Membrane gas permeation Liquid crystal Plasma polymerization Surface modification Fluorocarbon compound.

EXTREME PROPERTIES OF FIBER COMPOSITES AND THEIRCRYOGENIC APPLICATIONS

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Acta Metallurgica Sinica(English Letters) 1997年第3期10卷 283-289页

作者： G. Hartwig(Forschungszentrum Karlsruhe, Germally D-76021 Karlsruhe, P.B.3640) Forschungszentrum Karlsruhe Karlsruhe Germany

Fiber-polymer composites exhibit extraordianary and unusual properties. Depending on the fiber type and arrangementt the following can be achieved: a very high tensile strength and stiffness or fatigue strength, a zero or negative thermal expension, a rather high damping capability and a very high thermal and electrical insulating performance. But even carbon fibers can be converted into excellent electrical conductors when calined with fluorine. However, the shear properties of fiber composites with a polymeric matrix are medium. Extreme mechanical and thermal cryogenic properties will be discussed and compared to those of other material classes. Special emphasis is put on present and future cryogenic applications including storage and transportation of hydrogen or liquefied gases. gas permeation through composites afier mechani-cal and thermal cycling and modifications for a better performance will be *** trends for getting advanced materials will finish the presentation.

关键词： fiber-polymer composite cryogenic property thermal conductivity gas permeation