Effects of carbonisation atmosphere on the structural characteristics and transport properties of carbon membranes prepared from Kapton® polyimide

Su, Juing‐Huei; Lua, Aik Chong

doi:10.1016/j.memsci.2007.08.010

Cited by 66 publications

(18 citation statements)

References 28 publications

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“…This process can be performed with controlled degradation of the chemical structure. Thereby certain structural units of the polymer persist while others are transformed into carbon and graphite-like structures which can be identified via wide angle X-ray diffraction [20,22]. Carbonized membranes tend to have extremely high selectivities combined with very high permeabilities.…”

Section: Aging and Thermal History Of Membranesmentioning

confidence: 99%

Thermal stability of 6FDA-(co-)polyimides containing carboxylic acid groups

Wieneke

Staudt

2010

Polymer Degradation and Stability

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Section: Aging and Thermal History Of Membranesmentioning

confidence: 99%

Thermal stability of 6FDA-(co-)polyimides containing carboxylic acid groups

Wieneke

Staudt

2010

Polymer Degradation and Stability

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“…The factors that affecting membrane transport properties are the phases of carbonization at final temperature of thermal soaking time (30,60,90, and 120 minutes). Previous research by Lua and Su developed Kapton® polyimide TCM by controlling carbonization temperature, rate of heating and carbonization atmosphere [13]. Other study proved that conditions of carbonisation have noticeable effects on TCM gas permeation properties [9].…”

Section: Introductionmentioning

confidence: 93%

Effect of Thermal Soak Time Towards Polyimide Based-Carbon Tubular Membrane

Sazali¹,

Ramli²,

Siregar³

2020

ARAM

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Tubular carbon membrane (TCM) was prepared form BTDA-TDI/MDI (P-84) polyimide (PI) has a main precursor that combines with nanocrystalline cellulose (NCC) through controlled carbonization condition. Consideration of the thermal soaking time through the heating process is needed to maintain the proficiency of resultant TCM's. Thermal soaking time of 30 minutes, 60 minutes, 90 minutes, and 120 minutes was investigated to study the gas properties of the final TCM's. In the course of TCM's separation, single gas permeation experiments of CO 2 and N 2 are performed to investigate the transport mechanism. The PI / NCC TCM's developed at 120 min of thermal soak time from this study showed the most impressive CO 2 /N 2 performance, selectivity of 66.32±2.18 respectively.

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“…The oven was fed with 50 cm 3 /min pure Ar, while the heat flow rate was kept constant through out the pyrolysis process. Argon was chosen as a pyrolysis gas since it is considered to be the best non-active gas for polymeric precursor materials; it results to a mild activation action than it is possible to be performed with other gases such as helium or nitrogen [34].…”

Section: Thermal Gravimetric Analysismentioning

confidence: 99%

MWCNTs/Resin Nanocomposites: Structural, Thermal, Mechanical and Dielectric Investigation

Alexopoulos¹,

Favvas²,

Vairis³

et al. 2015

JESTR

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Multi-wall carbon nanotubes (MWCNTs) were manufactured, characterized and added to a typical aeronautical resin matrix at different concentrations as nano-reinforcement. The carbon content of produced MWCNTs was determined to be around 98.5% while they consisted of 13-20 wall-layers and their external diameter had an average size in between 20 and 50 nm. MWCNTs were dispersed in an epoxy resin system and tensile specimens for different MWCNTs concentrations were prepared in an open mould. Electrical wiring was attached to the specimens' surface and surface electrical resistance change was in-situ monitored during monotonic tension till fracture. Performed tensile tests showed that the MWCNTs addition increased both modulus of elasticity and ultimate tensile strength on the nano-composites with a simultaneously dramatic ductility decrease. The MWCNTs addition enhanced the investigated resin matrix with monitoring ability; electrical resistance change of the investigated tensile tests was correlated in the elastic regime with axial nominal strain and the gauge factor of the different MWCNTs concentration specimens were calculated. It was found that lowest MWCNTs concentration gave the best results in terms of piezo-resistivity and simultaneously the least enhancement in the mechanical properties.

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Effects of carbonisation atmosphere on the structural characteristics and transport properties of carbon membranes prepared from Kapton® polyimide

Cited by 66 publications

References 28 publications

Thermal stability of 6FDA-(co-)polyimides containing carboxylic acid groups

Thermal stability of 6FDA-(co-)polyimides containing carboxylic acid groups

Effect of Thermal Soak Time Towards Polyimide Based-Carbon Tubular Membrane

MWCNTs/Resin Nanocomposites: Structural, Thermal, Mechanical and Dielectric Investigation

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