Fluorescence study of polymer chain interpenetration and of the rate of phase separation in incompatible polymer blends

Autor:	H. Morawetz
Rok vydání:	1983
Předmět:	chemistry.chemical_classification Materials science Polymers and Plastics General Chemistry Polymer Photochemistry Methacrylate Acceptor Fluorescence chemistry.chemical_compound chemistry Polymer chemistry Materials Chemistry Molecule Polymer blend Emission spectrum Methyl methacrylate
Zdroj:	Polymer Engineering and Science. 23:689-692
ISSN:	1548-2634 0032-3888
Popis:	The application of fluorescence techniques has been demonstrated for the study of four polymer problems: (a) If two different polymers are labeled with donor and acceptor fluorophores, respectively, which exhibit nonradiative energy transfer, the emission spectrum of their blends will depend on whether the two polymeric species are miscible or segregated into separate phases. Thus, the emission spectrum may be used as a measure of polymer compatibility. (b) Since rapid freeze-drying preserves the extent of chain interpenetration which existed in solution, the energy transfer between labeled polymers may be used to study the extent of such interpenetration on solution concentration. (c) Phase separation when heating blends of poly(methyl methacrylate) and poly(benzyl methacrylate) may be followed by the change in the emission spectrum of the latter. (d) The interdiffusion of separated poly(ethyl methacrylate) molecules labeled with donor and acceptor fluorophores may be monitored by the increase in the nonradiative energy transfer.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::5860aa23818d42b951d85c82c4db21c7 https://doi.org/10.1002/pen.760231209 Zobrazit plný text záznamu Plný text