Carbonization and graphitization of Kapton-type polyimide films prepared from polyamide alkyl ester

Takeichi, Tsutomu; Eguchi, Yuji; Kaburagi, Yutaka; Hishiyama, Yoshihiro; Inagaki, Michio

doi:10.1016/s0008-6223(97)00155-3

Cited by 36 publications

(11 citation statements)

References 12 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The in‐plane orientation of the polyimide is induced during the imidization process by the loss of water molecules and shrinking only to the direction perpendicular to the film surface 14, 15. Thus, we studied the effects of the size of the leaving group during imidization with various polyimide precursors on the degree of in‐plane orientation of the graphitized films 16–18. As a result, for BPDA/PDA films, we found that the degree of orientation of the graphitized films from poly(amide methyl ester) was lower than that from PAA, but the degree of orientation increased with the increasing size of the leaving group 19.…”

Section: Introductionmentioning

confidence: 98%

Role of the in‐plane orientation of polyimide films in graphitization

Takeichi

Zuo

Hasegawa

2001

J Polym Sci B Polym Phys

View full text Add to dashboard Cite

Poly(amide acid) labeled with perylenetetracarboxydiimide (PEDI) was prepared from 3,3Ј,4,4Ј-biphenyltetracarboxylic dianhydride (BPDA), p-phenylenediamine (PDA), and diamino-PEDI. Poly(amide acid) was then reacted with sodium hydride and various kinds of alkyl iodides for transformation into various poly(amide ester)s. The cast films were imidized while fixed on glass substrates to give BPDA/PDA polyimide films. The degree of in-plane molecular orientation (f) of the polyimides and their precursors, poly(amide acid) and poly(amide ester)s, were determined via measurements of the visible dichroic absorption at an incidence angle for a rodlike dye (PEDI) bound to the main chain. All precursor films showed relatively low degrees of in-plane orientation. After imidization of the precursors fixed on glasses, however, striking spontaneous in-plane orientation behavior was observed. The f value for polyimide film from a poly(amide acid) precursor was as high as 0.7-0.8. The f value for polyimide film from a methyl ester precursor, however, was lowered to 0.4 -0.5, but it increased with the increasing size of the alkyl groups. Good correlations of the in-plane orientation of the polyimide films with the tensile modulus of the films and the in-plane orientation of the graphitized films were observed.

show abstract

Section: Introductionmentioning

confidence: 98%

Role of the in‐plane orientation of polyimide films in graphitization

Takeichi

Zuo

Hasegawa

2001

J Polym Sci B Polym Phys

View full text Add to dashboard Cite

show abstract

“…The structure of CMSMs is affected by chemical composition of precursors. The reported polymer precursors for carbon membranes are including polyfurfuryl alcohol (PFA) [17], polyvinylidene chloride (PVDC) [18,19], cellulose [20,21], phenolic resins [22], polyacrylonitrile (PAN) [23,24], polyetherimides [25,26] and polyimides [14,[27][28][29]. Among these polymers, the aromatic polyimide-type polymers appear to be the most frequently used materials in the preparation of CMSMs.…”

Section: Introductionmentioning

confidence: 99%

Separation of CO2/CH4 through carbon molecular sieve membranes derived from P84 polyimide

Tin

Chung

Liu

et al. 2004

Carbon

175

View full text Add to dashboard Cite

“…Especially, carbonization and graphitization of PI were extensively studied because of the molecular design flexibility of PI. The effects of chemical structure of PI [4], cold-drawing of PI film [5][6][7], and constraint during imidization of poly(amide acid) [8] on carbonization and graphitization have been extensively reported on the Kapton type PI, PI(PMDA/ODA) [9], and other PI films [10][11][12][13][14]. It was also revealed that carbonization of PI films give microporous carbon films by thermally treating PI films at 700-900 °C [15,16].…”

Section: Introductionmentioning

confidence: 98%

Characterization of Carbon Films Prepared from Polybenzoxazine Films

Takahashi

Osawa

Shibayama

et al. 2015

J. Photopol. Sci. Technol.

View full text Add to dashboard Cite

Two types of polybenzoxazine films, PBa and PPd, that were prepared by the thermal cure of benzoxazines, Ba and Pd, were carbonized at temperature-controlled condition, and the effect of the chemical structure of the polybenzoxazines on carbonization was examined by comparing with the carbonization behavior of polyimide film. X-ray diffraction and X-ray photoelectron spectra measurements showed that the carbon films prepared by heat treatment of rigid polybenzoxazine, PPd, at 900 °C and 1000 °C were the most graphitized. Micrographitic structure was confirmed by transmission electron microscope observation for the carbonized films of PBa and PPd at 1000 °C.

show abstract

Carbonization and graphitization of Kapton-type polyimide films prepared from polyamide alkyl ester

Cited by 36 publications

References 12 publications

Role of the in‐plane orientation of polyimide films in graphitization

Role of the in‐plane orientation of polyimide films in graphitization

Separation of CO2/CH4 through carbon molecular sieve membranes derived from P84 polyimide

Characterization of Carbon Films Prepared from Polybenzoxazine Films

Contact Info

Product

Resources

About