Abstract
Fluorescence quenching was used to investigate the onset and extent of overlap and interpenetration in poly(vinyl methyl ether) (PVME) solutions using polystyrene with a dilute level of anthracene labelling (APS) as a probe. A low, constant concentration of APS was added to solutions varying in PVME concentration. The critical overlap concentration, c*, was taken to be the PVME concentration at which quenching of the probe anthracene-labelled polymer molecules commenced. Variations in probe molecular weight and concentration produced no significant changes in c* or in the rate of decrease in fluorescence intensity above c*, lending credibility to the idea that the APS is simply probing the PVME system. The values of c* [η] from these experiments were found to lie in the range of 0.87-1.7 which agrees with the results from previous studies. The sensitivity of this method to small differences in solvent quality for PVME was also investigated.
Original language | English (US) |
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Pages (from-to) | 2257-2261 |
Number of pages | 5 |
Journal | Polymer |
Volume | 28 |
Issue number | 13 |
DOIs | |
State | Published - Dec 1987 |
Keywords
- c*
- fluorescence quenching
- interpenetration
- poly(vinyl methyl ether)
- polystyrene
ASJC Scopus subject areas
- Organic Chemistry
- Polymers and Plastics
- Materials Chemistry