Synthesis and properties of polyimide–clay hybrid

Wiley - Tập 31 Số 10 - Trang 2493-2498 - 1993
Kazuhisa Yano1, Arimitsu Usuki1, Akane Okada1, Toshio Kurauchi1, Osami Kamigaito1
1Toyota Central Research & Development Laboratories, Inc. 41-1, Aza Yokomichi, Oaza Nagakute, Nagakute-cho, Aichi-gun, Aichi-ken, 480-11, Japan

Tóm tắt

AbstractA polyimide hybrid with montmorillonite clay mineral has been synthesized from a dimethylacetamide (DMAC) solution of poly(amic acid) and a DMAC dispersion of montmorillonite intercalated with an ammonium salt of dodecylamine. Montmorillonite consists of stacked silicate sheets about 2000 Å in length, 10 Å in thickness. In this hybrid, montmorillonite is dispersed homogeneously into the polyimide matrix and oriented parallel to the film surface. Thanks to this special structure, this hybrid showed excellent gas barrier properties. Only 2 wt % addition of montmorillonite brought permeability coefficients of various gases to values less than half of those of ordinary polyimide. Furthermore, this hybrid had low thermal expansion coefficient. © 1993 John Wiley & Sons, Inc.

Từ khóa


Tài liệu tham khảo

10.1557/PROC-171-45

10.1016/0040-6090(81)90661-1

10.1021/bk-1982-0184

10.1002/pol.1976.230110105

10.1016/0040-6090(90)90018-9

10.1016/0032-3861(89)90100-6

10.1557/PROC-108-113

10.1002/pen.760281405

10.1021/bk-1989-0407.ch008

Labadie J., 1990, Soc. Adv. Mater. Process Eng. J., 26, 19

Goff D., 1988, Polym. Mater. Sci. Eng., 59, 186

Preliminary results were presented in Polym. Prepr. 32(1) 65 (1991).

10.1080/10601326708053745

Thông tin
Thông tin xuất bản

Wiley

Tập 31 Số 10

2493-2498

Thông tin tác giả