Preparation of microporous carbons by using α-cyclodextrin as molecular porogen

Liu, Jin; Wang, Huanting

doi:10.1016/j.jnoncrysol.2005.02.012

Cited by 6 publications

(1 citation statement)

References 17 publications

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“…[20][21][22] Although several studies have addressed the inclusion complex and microporous cabons based on polyimide/ cyclodextrin composites, very little attention has been paid to its dielectric constant, thermal and mechanical characteristic of PI/CD composite films. 23,24 We dispersed the homogeneously nanoscale cyclodextrin into polyimide matrix to form novel polyimide/modified CD (M-CD) nanocomposites via covalent bonding. A series of the novel pyromellitic dianhydride (PMDA)-4,4'-oxydianiline (ODA) polyimide nanocomposite films with modified β-CD were synthesized via in situ polymerization and following thermal imidization.…”

Section: Introductionmentioning

confidence: 99%

Preparation and characterization of polyimide/modified β-cyclodextrin nanocomposite films

et al. 2010

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A series of pyromellitic dianhydrides (PMDAs)-4,4'-oxydianiline (ODA) polyimide nanocomposite films with modified β-cyclodextrin (CD) were prepared via in situ polymerization and subsequent thermal imidization. The effect of CD modified with the functional group of -NH 2 on the mechanical properties and dielectric constant of the nanocomposite films were investigated. The tensile strength and modulus of the nanocomposite films containing modified CD were higher than the neat PI. The dielectric constant decreased with increasing content of the modified CD up to 10 wt% from 3.34 for neat PI to 2.56.

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Section: Introductionmentioning

confidence: 99%

Preparation and characterization of polyimide/modified β-cyclodextrin nanocomposite films

et al. 2010

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Porogen Incorporation and Phase Inversion

Qian¹,

Zhang²

2011

Porous Polymers

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Effect of acid treatment on structure and morphology of carbons prepared from pyrolysis of polyfurfuryl alcohol

Cheng

Tseng

2009

J Polym Res

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Furfuryl alcohol (FA) was polymerized in aqueous solutions consisting of polyvinyl pyrrolidone (PVP) as a surfactant together with hydrochloric acid, phosphoric acid, or acetic acid as a catalyst, respectively. The polymerization degree of FA and the resulting structural difference after carbonization were examined. Experiments revealed that the presence of acids does indeed promote polymerization of FA, leading to a reduced defect population and an eventual formation of a more ordered structure in the carbonized products. This is particularly pronounced when hydrochloric acid was used as a catalyzer, forming "nonstick" polyfurfuryl alcohol (PFA) particles with a diameter ca. 0.5-1 mu m. The polymeric particles were then converted into microporous carbon spheres with a specific surface area of 297 m(2)/g when calcined at 600 A degrees C in argon atmosphere. On the contrary, FA in the rest of catalyst systems showed aggregated form with a pronouncedly reduced specific surface area ranging from 0.3 to 5.2 m(2)/g

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Preparation of microporous carbons by using α-cyclodextrin as molecular porogen

Cited by 6 publications

References 17 publications

Preparation and characterization of polyimide/modified β-cyclodextrin nanocomposite films

Preparation and characterization of polyimide/modified β-cyclodextrin nanocomposite films

Porogen Incorporation and Phase Inversion

Effect of acid treatment on structure and morphology of carbons prepared from pyrolysis of polyfurfuryl alcohol

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