Evolution of glassy polymers used for gas separation

Fundamentals of hollow fiber formation for gas separation

Fundamentals of hollow fiber formation for gas separation
... evaporation of low boiling solvents is the key factor for the formation of defect-free gas separation hollow fiber membranes [17, 21] 1.1.3 The effects of air-gap on hollow fiber formation Air-gap ... and Literature Review on Hollow Fiber Formation for Gas Separation ……… ……………………………….1 1.1 Formation of hollow fiber membranes by phase inversion………………………… 1.1.1 The effect of dope composition and ... FUNDAMENTALS OF HOLLOW FIBER FORMATION FOR GAS SEPARATION PENG NA (B Eng, Dalian University of Technology, P R China) A THESIS SUBMITTED FOT THE DEGREE OF DOCTOR OF PHILOSOPHY DEPARTMENT OF...
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Development of mixed matrix membranes for gas separation application

Development of mixed matrix membranes for gas separation application
... multitude applications of gas separation membranes are listed in Table 1.2 The major applications for gas separation membranes are discussed Table 1.2: Industrial applications of gas separation membranes ... development of membrane gas separation technology [14] Figure 1.2: Milestones on the development of membrane gas separations [14] 1.2 IMPORTANCE OF GAS SEPARATIONS USING MEMBRANES Membrane gas separation ... fiber membranes between the O2/N2 mixed gas and pure gas measurements……… 245 Table B.3 Comparison of separation performance of hollow fiber membranes between the CO2/CH4 mixed gas and pure gas...
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Polymers of intrinsic microporosity (PIM) based membranes for gas separation

Polymers of intrinsic microporosity (PIM) based membranes for gas separation
... for gas separation .4 1.3  Technology milestones of gas separation membranes .6 1.4  New classes of membrane materials 1.5  Polymers of intrinsic microporosity (PIMs) based membranes ... POLYMERS OF INTRINSIC MICROPOROSITY (PIM)- BASED MEMBRANES FOR GAS SEPARATION YONG WAI FEN (B Eng (Chemical) (Hons.), University Putra Malaysia) A THESIS SUBMITTED FOR THE DEGREE OF DOCTOR OF ... Table 7.4 Comparison of gas separation performance of PIM-1/Matrimid (10:90) hollow fiber membranes before and after heat treatment .181 Table 7.5 Gas separation performance of PIM-1/Matrimid...
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Fabrication and characterization of composite membranes for gas separation

Fabrication and characterization of composite membranes for gas separation
... Comparison of separation performance for hollow fiber membranes between the O2/N2 mixed gas and pure gas measurements……… … 245 Table B.3 Comparison of separation performance for hollow fiber membranes ... FABRICATION AND CHARACTERIZATION OF COMPOSITE MEMBRANES FOR GAS SEPARATION JIANG LANYING (B Sci., Wuhan University, P R China) A THESIS SUBMITTED FOR THE DEGREE OF DOCTOR OF PHYLOSPHY ... application of gas separation is the separation of noncondensible gases such as Nitrogen enrichment from air, natural gas purification, and Hydrogen recovery from nitrogen and refinery 1.2.1 Nitrogen and...
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Modification of polyimide membranes for gas separation

Modification of polyimide membranes for gas separation
... MODIFICATION OF POLYIMIDE MEMBRANES FOR GAS SEPARATION XIAO YOUCHANG (B Sc, Xiamen University, China) A THESIS SUBMITTED FOR THE DEGREE OF DOCTOR OF PHILOSOPHY DEPARTMENT OF CHEMICAL ... Cross-linking Modification of Polyimide Membranes Induced by Amino Terminated Dendrimers……………………………………… 170 8.1.2 Carbonization of Polyimide Membranes to Enhance the Gas Separation Performance…………………………………………………………….172 ... trade-off curve for gas permeability and selectivity The aim of this study was to investigate two different modification methods for polyimide membranes to improve their separation performance...
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comparative study of nanocrystalline sno2 materials for gas sensor application

comparative study of nanocrystalline sno2 materials for gas sensor application
... reducing gases [12] To investigate the oxidation activity of synthesized and commercial materials, we performed TPR study of SnO2 with and without Pd (Fig 6) TPR profile of the synthesized SnO2 displays ... target gas is of the same order of magnitude as the resistance of the sensors on the basis of commercial SnO2 The use of synthesized SnO2 results in the highest signals (defined as Rair /Rgas ) to ... 30 nm for synthesized and commercial SnO2 , respectively The temperature range for TXRD study of crystallite growth kinetics was chosen by several reasons The usual process of formation of metal...
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Báo cáo hóa học: " Fabrication and evolution of multilayer silver nanofilms for surface-enhanced Raman scattering sensing of arsenate" pdf

Báo cáo hóa học:
... Y: Surface-enhanced Raman scattering of biological molecules on metal colloid II: effects of aggregation of gold colloid and comparison of effects of pH of glycine solutions between gold and silver ... and evolution of multilayer silver nanofilms for surface-enhanced Raman scattering sensing of arsenate Nanoscale Research Letters 2011 6:263 Submit your manuscript to a journal and benefit from: ... X: Surface-enhanced Raman scattering for arsenate detection on multilayer silver nanofilms Anal Chim Acta 2011 doi:10.1186/1556-276X-6-263 Cite this article as: Hao et al.: Fabrication and evolution...
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BS 5440 1 1990 installation of flues and ventilation for gas appliances of flues and ventilation

BS 5440 1 1990 installation of flues and ventilation for gas appliances of flues and ventilation
... referred to ii 8 9 10 10 11 11 12 13 15 18 23 24 28 33 36 36 37 38 39 14 14 16 21 22 27 29 29 31 34 34 35 37 Inside back cover © BSI 11 -19 98 BS 5440- 1: 1990 Foreword This Part of BS 5440 has been prepared ... 0.0 61 0.065 0.075 0.084 0.093 0 .10 3 0 .11 3 0.060 0.068 0.073 0.087 0 .10 2 0 .11 7 0 .13 1 0 .14 6 0.083 0.092 0 .10 0 0 .11 9 0 .13 8 0 .15 6 0 .18 1 0.2 01 0.086 0.098 0 .10 7 0 .13 0 0 .15 3 0 .18 2 0.206 0.228 0 .10 7 0 .12 2 ... 0 .11 6 0 .13 6 0 .15 3 m2 m2 m2 m2 m2 m2 m2 m2 0.052 0.064 0.088 0 .11 3 0 .13 7 0 .15 8 0 .18 9 0.058 0.072 0 .10 0 0 .12 8 0 .15 4 0 .18 9 0. 216 0.062 0.078 0 .11 1 0 .14 2 0 .18 0 0. 211 0.242 0.067 0.084 0 .12 2 0 .15 6...
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BS 5440 2 1989 installation of flues and ventilation for gas appliances of rated input not exceed

BS 5440 2 1989 installation of flues and ventilation for gas appliances of rated input not exceed
... ventilation for gas appliances of rated input not exceeding 60 kW (1st and 2nd family gases) BS 5440- 1, Specification for installation of flues BS 54 82, Code of practice for domestic butane- and propane -gas- burning ... family gases) BS 525 8-11, Flueless catalytic combustion heaters (3rd family gases) BS 5440, Installation of flues and ventilation for gas appliances of rated input not exceeding 60 kW (1st and 2nd ... ventilation BS 61 72, Code of practice for installation of domestic gas cooking appliances (2nd family gases) BS 6173, Code of practice for installation of gas catering appliances (2nd family gases) BS...
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BS 5440 2 2000 installation and maintenance of flues and ventilation for gas appliances of rated

BS 5440 2 2000 installation and maintenance of flues and ventilation for gas appliances of rated
... necessary to inform the customer © BSI July 20 04 13 BS 5440- 2: 2000 Figure — Typical air vent arrangements 14 © BSI July 20 04 BS 5440- 2: 2000 Figure — Free-areas © BSI July 20 04 15 BS 5440- 2: 2000 NOTE ... part of this standard 12 © BSI July 20 04 BS 5440- 2: 2000 6 .2 Passive stack ventilation Passive stack ventilation (PSV) shall be considered independently from the provision of ventilation for gas appliances ... gas appliances of rated input not exceeding 60 kW (1st, 2nd and 3rd family gases) — Part 1: Specification for installation of flues BS 54 82- 2:1997, Domestic butane- and propane -gas- burning installations...
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Tailoring the properties of glassy polymeric membranes for energy development

Tailoring the properties of glassy polymeric membranes for energy development
... TAILORING THE PROPERTIES OF GLASSY POLYMERIC MEMBRANES FOR ENERGY DEVELOPMENT LI FUYUN B Tech (Hons.), NUS A THESIS SUBMITTED FOR THE DEGREE OF DOCTOR OF PHILOSOPHY DEPARTMENT OF CHEMICAL ... porous or nonporous, the gas transport mechanisms vary from one to another The former is for the separation of gases on the basis of their molecular size through the small pores in the membrane matrix, ... performance of the original and the thermally cross-linked PIM-1 membranes (Tested at 35 oC and 3.5 atm) …… 112 Table 5.2 PAL results of the original and the thermally cross-linked PIM-1 xix membranes...
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Thermally rearranged polymeric membranes for gas separation

Thermally rearranged polymeric membranes for gas separation
... Literature review on thermally rearranged membranes for gas separation Thermally rearranged polymer membranes were studied for gas separation since 1990s Okamoto et al [19] studied the gas permeability ... Objective 1.1 Membranes for gas separation 10 1.2 Highly permeable polymer membranes for gas separation 11 1.3 Thermally rearranged polymeric membranes 13 1.4 ... 91 Table 4.6: Pure gas permeation properties of thermally rearranged membranes 95 Table 5.1: Elemental analyses results for precursor and thermally rearranged membranes ...
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Laser surface structuring of biocompatible polymers films for potential use in tissue engineering applications

Laser surface structuring of biocompatible polymers films for potential use in tissue engineering applications
... Biomaterials engineering 2.2 Significance and importance of tissue engineering 12 2.3 Poly(ε-caprolactone) thin films and matrices 16 2.4 Current progress of poly(ε-caprolactone) in biomedical engineering ... presented in the thesis showed the versatile use of lasers as a tool for laser micro -structuring and inducing chemical changes on selfdeveloped PCL thin films The processed films can be suitable for use ... submitted for the degree of Doctor of Philosophy in the Department of Mechanical Engineering at the National University of Singapore under the supervision of Professor Teoh Swee Hin and Associate Professor...
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Polyimides modifications and carbon molecular sieves derived from polyimides for gas separation

Polyimides modifications and carbon molecular sieves derived from polyimides for gas separation
... modification 13 iii Polyimides Modifications and Carbon Molecular Sieves Derived from Polyimides for Gas Separation Shao Lu 1.4 Carbon Molecular Sieve Membranes (CMSMs) for Gas Separation 14 1.5 ... Polyimides Modifications and Carbon Molecular Sieves Derived from Polyimides for Gas Separation Shao Lu LIST OF TABLES Table 1.1 Membrane gas separation companies; membranes/modules and gas separations ... commercial gas separation membranes Table 1.1 shows the information on the larger -2- Polyimides Modifications and Carbon Molecular Sieves Derived from Polyimides for Gas Separation Shao Lu gas separation...
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Dual layer asymmetric hollow fiber membranes for gas separation

Dual layer asymmetric hollow fiber membranes for gas separation
... coextrusion dual- layer hollow fiber formation • Morphology characterization on resultant dual- layer hollow fibers • Examination of gas separation performance of resultant dual- layer hollow fibers ... delamination-free dual- layer membranes 122 5.3.2 Fabrication of 6FDA–durene–mPDA/PES dual- layer membranes for gas separation 5.3.3 126 Separation performance of 6FDA–durene–mPDA/PES dual- layer membranes ... Conclusion x Summary We have studied the fabrication of dual- layer asymmetric hollow fiber composite membranes for gas separation The dual- layer composite membranes were prepared by simultaneously extruding...
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