Observations of the coil—globule transition in single polymers

Autor:	Izumi Nishio, Toyoichi Tanaka, Shao-Tang Sun, Gerald Swislow
Rok vydání:	1980
Předmět:	chemistry.chemical_classification Materials science Polyacrylamide Analytical chemistry Coil-globule transition Radius Polymer Condensed Matter Physics Electronic Optical and Magnetic Materials Solvent chemistry.chemical_compound chemistry Radius of gyration Acetone Polystyrene
Zdroj:	Ferroelectrics. 30:99-99
ISSN:	1563-5112 0015-0193
DOI:	10.1080/00150198008209495
Popis:	We report observations of the coil-globule transition of a single polymer chain in solution. For polyacrylamide (MW = 5−6×106), the transition occurs when the acetone concentration of the acetone water solvent is increased. In polystyrene (MW = 26×106)—cyclohexane solutions, the transition is induced by lowering the temperature. Since the transition to the globule state is in competition with inter-polymer aggregation, measurements must be made at very low polymer concentrations. By measuring the angular dependence of the time-dependent and time-independent parts of the correlation function of light scattered from dilute solutions of polymer (
Databáze:	OpenAIRE
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