Electron microscopy of macroporous cellulose (acetate-co-butyrate)-polycarbonate semi-interpenetrating networks.

Autor: B. Décamps, E. Leroy, J. L. Pastol, J. Laskar, D. Teyssié, N. Lacoudre, V. Lalanne, S. Boileau
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Zdroj: Polymer Bulletin; Aug2004, Vol. 52 Issue 2, p149-153, 5p
Abstrakt: Summary Summary Semi?interpenetrating polymer networks, s?IPNs, were prepared from cellulose acetate?co?butyrate (CAB), still containing 46% OH groups, and diethylene glycol bis allylcarbonate (CR39) which was crosslinked by free?radical polymerization initiated by benzoyl peroxide. Microstructure of s?IPNs (CAB/CR39) of relative weight proportions between 0.2/1 and 0.411 was examined by electron microscopy (TEM and SEM). Spheroidal compact objects of several µm diameter are randomly distributed within a microporous phase in which the pore connectivity was shown by density measurements. Such a microstructure is consistent with the formation of CAB polymer dispersed phase in a poly (CR39) network continuous phase. [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index