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- W2365194308 abstract "In order to study the effect of coupling agent on phase demixing and thermal stability,polyimide and polyimide/SiO_2 hybrid composite membranes were prepared from 1,4-bis(3,4-dicarboxyphenoxy) benzene dianhydride(HQDPA) and 4,4′-diaminodiphenyl ether(ODA) via sol-gel process in the solvent N,N′diamethylbormamide(DMF) with tetraethyl orthosilicate(TEOS) as precursor and γ-glycidyloxypropyltrimethoxysilanes(GOTMS) as coupling agent.The membranes′ microstructure and properties were investigated by FTIR,SEM,TGA-DTG.When GOTMS was added,the diameter of SiO_2 domain decreased from 1 000 to 200-400 nm.Microchambers formed in phase demixing disappeared.The results showed that thermal decomposition temperature of hybrid membranes increased by 21 ℃,and it rose with the increasing of SiO_2 mass fraction." @default.
- W2365194308 created "2016-06-24" @default.
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- W2365194308 date "2008-01-01" @default.
- W2365194308 modified "2023-09-26" @default.
- W2365194308 title "Effect of coupling agent on microstructure and properties of polyimide/SiO_2 hybrid membrane" @default.
- W2365194308 hasPublicationYear "2008" @default.
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