Controlled gas-phase sulfonation of low-density polyethylene films

Autor:	Jacqueline M. Allan, R. Larry Dooley, Shalaby W. Shalaby
Rok vydání:	2000
Předmět:	Polymers and Plastics Chemistry General Chemistry Surface reaction Polyethylene Surfaces Coatings and Films Degree (temperature) Gas phase Low-density polyethylene chemistry.chemical_compound Chemical engineering Polymer chemistry Materials Chemistry Surface roughness
Zdroj:	Journal of Applied Polymer Science. 76:1865-1869
ISSN:	1097-4628 0021-8995
Popis:	In the current research, a highly controllable system operating at low temperatures and for short reaction times is employed for the surface sulfonation of low-density polyethylene. This system provides the advantages of short reaction times and low reaction temperatures, as compared with previous methods of surface sulfonation. Low-density polyethylene films were sulfonated at 40°C for time periods ranging from 5 to 30 min. Subsequently, all films were analyzed by SEM, EDX, horizontal ATR-FTIR, surface roughness, and dynamic contact-angle measurements. Sulfonation was effected at all reaction times. The degree of surface sulfonation increased through 10 min and reached a maximum between 10- and 30-min reaction times with concomitant changes in the physicochemical properties of the material. At 30 min, the film topography changed substantially, indicating that sulfonation was no longer limited to a strictly surface reaction.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::d73e69eda2c207277f63123d4c0b094f https://doi.org/10.1002/(sici)1097-4628(20000624)76:13<1865::aid-app3>3.0.co Zobrazit plný text záznamu Plný text