Premium
Thermooxidation‐induced Surface Modifications of the Ethylene–Methyl Acrylate Copolymer as Investigated by Time‐of‐flight Particle‐induced Desorption Mass Spectrometry. Part II: The Copolymer
Author(s) -
Nsouli B.,
Dole P.,
Allali H.,
Chauchard J.,
Thomas J.P.
Publication year - 1996
Publication title -
rapid communications in mass spectrometry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.528
H-Index - 136
eISSN - 1097-0231
pISSN - 0951-4198
DOI - 10.1002/(sici)1097-0231(19960131)10:2<162::aid-rcm439>3.0.co;2-u
Subject(s) - chemistry , copolymer , desorption , mass spectrometry , x ray photoelectron spectroscopy , polyethylene , methyl acrylate , ethylene , acrylate , polymer chemistry , secondary ion mass spectrometry , particle (ecology) , chemical engineering , elastomer , static secondary ion mass spectrometry , analytical chemistry (journal) , polymer , organic chemistry , chromatography , adsorption , catalysis , oceanography , engineering , geology
Surface chemical modifications due to thermooxidation of the poly(ethylene‐co‐methyl acrylate) elastomer have been investigated by secondary‐ion emission techniques complemented by X‐ray photoelectron spectroscopy. Contradictory findings resulting from different depths of emission were reconciled by using time‐of‐flight particle‐induced desorption mass spectrometry (TOF‐PDMS). It is observed that the oxidation process (180 °C) leads to a surface enrichment of oxidized polyethylene sequences with an almost complementary decrease of the polymethylacrylate contribution. This is tentatively interpreted in terms of conformational surface rearrangement (accumulation of PE blocks to the detriment of those of PMA), closely related to the progress of the cross‐linking process occurring in the bulk of the material.