Zeolite-filled polyimide membrane containing 2,4,6-triaminopyrimidine

Hyun Hang Yong; Hyun Chae Park; Yong Soo Kang; Jongok Won; Woo Nyon Kim

doi:10.1016/S0376-7388(00)00659-1

Zeolite-filled polyimide membrane containing 2,4,6-triaminopyrimidine

Hyun Hang Yong, Hyun Chae Park, Yong Soo Kang, Jongok Won, Woo Nyon Kim

Research output: Contribution to journal › Article › peer-review

238 Citations (Scopus)

Abstract

Interfacial void-free Matrimid polyimide (PI) membranes filled with zeolites were prepared by introducing 2,4,6-triaminopyrimidine (TAP). TAP enhanced the contact of zeolite particles with polyimide chains presumably by forming hydrogen bonding between them. The threshold amount of TAP, needed to depress totally the void formation, varied with zeolite type in the order of zeolite 4A ≈ 13X < NaY < 5A < NaSZ390HUA. It was also observed that the threshold amount of TAP could be related with the number of external hydroxyl groups of zeolite particles. The void-free PI/zeolite 13X/TAP membrane showed the higher gas permeability for He, N₂, O₂, CO₂ and CH₄ with a little expense of permselectivity compared with the PI/TAP membrane, while the PI/zeolite 4A/TAP membrane showed the lower permeability but higher permselectivity. The facilitation ratios of the zeolite-filled PI membranes were strongly affected by the pore size of zeolites. In addition, the molecular sieving effect of zeolites seemed to take place when the kinetic diameter of gas penetrants approached the pore size of zeolites.

Original language	English
Pages (from-to)	151-163
Number of pages	13
Journal	Journal of Membrane Science
Volume	188
Issue number	2
DOIs	https://doi.org/10.1016/S0376-7388(00)00659-1
Publication status	Published - 2001 Jul 15

Keywords

2,4,6-triaminopyrimidine
Gas separation
Interfacial adhesion
Polyimide
Zeolite-filled membrane

ASJC Scopus subject areas

Biochemistry
General Materials Science
Physical and Theoretical Chemistry
Filtration and Separation

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10.1016/S0376-7388(00)00659-1

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title = "Zeolite-filled polyimide membrane containing 2,4,6-triaminopyrimidine",

abstract = "Interfacial void-free Matrimid polyimide (PI) membranes filled with zeolites were prepared by introducing 2,4,6-triaminopyrimidine (TAP). TAP enhanced the contact of zeolite particles with polyimide chains presumably by forming hydrogen bonding between them. The threshold amount of TAP, needed to depress totally the void formation, varied with zeolite type in the order of zeolite 4A ≈ 13X < NaY < 5A < NaSZ390HUA. It was also observed that the threshold amount of TAP could be related with the number of external hydroxyl groups of zeolite particles. The void-free PI/zeolite 13X/TAP membrane showed the higher gas permeability for He, N2, O2, CO2 and CH4 with a little expense of permselectivity compared with the PI/TAP membrane, while the PI/zeolite 4A/TAP membrane showed the lower permeability but higher permselectivity. The facilitation ratios of the zeolite-filled PI membranes were strongly affected by the pore size of zeolites. In addition, the molecular sieving effect of zeolites seemed to take place when the kinetic diameter of gas penetrants approached the pore size of zeolites.",

keywords = "2,4,6-triaminopyrimidine, Gas separation, Interfacial adhesion, Polyimide, Zeolite-filled membrane",

author = "Yong, {Hyun Hang} and Park, {Hyun Chae} and Kang, {Yong Soo} and Jongok Won and Kim, {Woo Nyon}",

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AU - Yong, Hyun Hang

AU - Park, Hyun Chae

AU - Kang, Yong Soo

AU - Won, Jongok

AU - Kim, Woo Nyon

PY - 2001/7/15

Y1 - 2001/7/15

N2 - Interfacial void-free Matrimid polyimide (PI) membranes filled with zeolites were prepared by introducing 2,4,6-triaminopyrimidine (TAP). TAP enhanced the contact of zeolite particles with polyimide chains presumably by forming hydrogen bonding between them. The threshold amount of TAP, needed to depress totally the void formation, varied with zeolite type in the order of zeolite 4A ≈ 13X < NaY < 5A < NaSZ390HUA. It was also observed that the threshold amount of TAP could be related with the number of external hydroxyl groups of zeolite particles. The void-free PI/zeolite 13X/TAP membrane showed the higher gas permeability for He, N2, O2, CO2 and CH4 with a little expense of permselectivity compared with the PI/TAP membrane, while the PI/zeolite 4A/TAP membrane showed the lower permeability but higher permselectivity. The facilitation ratios of the zeolite-filled PI membranes were strongly affected by the pore size of zeolites. In addition, the molecular sieving effect of zeolites seemed to take place when the kinetic diameter of gas penetrants approached the pore size of zeolites.

AB - Interfacial void-free Matrimid polyimide (PI) membranes filled with zeolites were prepared by introducing 2,4,6-triaminopyrimidine (TAP). TAP enhanced the contact of zeolite particles with polyimide chains presumably by forming hydrogen bonding between them. The threshold amount of TAP, needed to depress totally the void formation, varied with zeolite type in the order of zeolite 4A ≈ 13X < NaY < 5A < NaSZ390HUA. It was also observed that the threshold amount of TAP could be related with the number of external hydroxyl groups of zeolite particles. The void-free PI/zeolite 13X/TAP membrane showed the higher gas permeability for He, N2, O2, CO2 and CH4 with a little expense of permselectivity compared with the PI/TAP membrane, while the PI/zeolite 4A/TAP membrane showed the lower permeability but higher permselectivity. The facilitation ratios of the zeolite-filled PI membranes were strongly affected by the pore size of zeolites. In addition, the molecular sieving effect of zeolites seemed to take place when the kinetic diameter of gas penetrants approached the pore size of zeolites.

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KW - Interfacial adhesion

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Zeolite-filled polyimide membrane containing 2,4,6-triaminopyrimidine

Abstract

Keywords

ASJC Scopus subject areas

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