Surface structures of solvent‐cast films prepared from poly(ethylene oxide)‐segmented nylons

Abstract

ABSTRACT:The surface structures of three kinds of poly-(ethylene oxide)-segmented nylon (PEO-Ny) films prepared by the solvent-cast method were investigated with electron spectroscopy for chemical analysis (ESCA). The PEO-Ny's used were high-crystalline PEO-segmented poly(iminosebacoyliminohexamethylene), low-crystalline PEO-segmented poly(iminosebacoylimino-m-xylene), and amorphous PEOsegmented poly(iminoisophthaloyliminomethylene-1,3-cyclohexylenemethylene), and the PEO contents in the bulk polymers were approximately 10 wt %. The ESCA results showed that the PEO segment was enriched on the top surfaces of all the films, and the degrees of enrichment were different. The mechanism of the PEO enrichment was examined.

Polymeric fullerene oxide films produced by decomposition of hexanitro[60]fullerene

“…The O(1s) signal can also be clearly deconvoluted into two subpeaks, namely the O I peak at 531.7 eV and the O II peak at 532.7 eV. The O I peak is most likely associated with a hydroxide species [28] connected directly with carbon atoms, whereas the O II peak can be definitely assigned to the oxygen atoms in -NO 2 group [28,30]. The N(1s) signal (not shown) appears at 405.1 eV, indicating clearly the presence of -NO 2 group [28].…”