Vitrification of Thin Polymer Films: From Linear Chain to Soft Colloid-like Behavior

Autor:	David W. Gidley, Bradley Frieberg, Alexandros Chremos, Emmanouil Glynos, Peter F. Green, Georgios Sakellariou
Rok vydání:	2015
Předmět:	chemistry.chemical_classification Materials science Polymers and Plastics Organic Chemistry Polymer Inorganic Chemistry Colloid chemistry.chemical_compound chemistry Chemical engineering Materials Chemistry Vitrification Polystyrene Thin film Glass transition Silicon oxide
Zdroj:	Macromolecules. 48:2305-2312
ISSN:	1520-5835 0024-9297
DOI:	10.1021/ma502556n
Popis:	We show that the vitrification of star-shaped polystyrene (PS), of functionality f and molecular weight per arm Mwarm, thin films supported by silicon oxide, SiOx, is strongly dependent on Mwarm and f. When f is small, the vitrification behavior is similar to that of linear-chain PS where the average glass transition, Tg, decreases with decreasing film thickness (ΔTg 0. We show that the overall vitrification behavior of these thin film star-shaped polymers is due to compet...
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::2b8a2a3c98c29762fc42f602baafc98d https://doi.org/10.1021/ma502556n Zobrazit plný text záznamu