Surface Damage of PVC Polymers during XPS Analysis

Autor:	Kazunaka Endo, S. Koizumi, Shigehiro Maeda, Hidetoshi Miura, Kenji Hyodo, Christophe Bureau, Kazuchiyo Takaoka
Rok vydání:	2002
Předmět:	chemistry.chemical_classification Materials science Valence (chemistry) Pentamer Polymer Polyvinyl chloride chemistry.chemical_compound chemistry X-ray photoelectron spectroscopy Cleave Polymer chemistry Physical chemistry Irradiation Bond energy
Zdroj:	Journal of Surface Analysis. 9:471-476
ISSN:	1347-8400 1341-1756
Popis:	金沢大学ナノマテリアル研究所 / 金沢大学理工研究域数物科学系 / 金沢大学大学院自然科学研究科物質情報解析 We examined surface damage for polyvinyl chloride (PVC) sample after 260 minutes at an unmonochromated Al Kα X-ray source power at 600 W, because PVC decomposes very quickly due to the X-ray irradiation. The pendant Cl groups of the PVC were estimated to cleave more rapidly than C-C bonds in the main chains from two-center bond energies calculated by AM1 method using the model pentamer. The valence XPS of the polymer at the initial time, and after 120 and 260 minutes of X-ray irradiation were analyzed by deMon density-functional theory (DFT) calculations using the model pentamer. The simulated results afforded us that the pendant Cl groups of PVC cleave mainly due to the X-ray radiation.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8d44d118d35f01c8f4cc949aed59df76 https://doi.org/10.1384/jsa.9.471 Zobrazit plný text záznamu