Study on the miscibility of poly(2-hydroxyethyl methacrylate)/poly(styrene-co-acrylamide) blends by nonradiative energy transfer fluorescence spectroscopy
✍ Scribed by K. J. Zhu; Wang Ji
- Publisher
- John Wiley and Sons
- Year
- 1995
- Tongue
- English
- Weight
- 220 KB
- Volume
- 196
- Category
- Article
- ISSN
- 1022-1352
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✦ Synopsis
Abstract
The miscibility of poly(2‐hydroxyethyl methacrylate)/poly(styrene‐co‐acrylamide) (PHEMA/PSAm) blends was investigated by nonradiative energy transfer fluorescence spectroscopy using anthracene‐labeled PHEMA and carbazole‐labeled PSAm. The results show that the ratio of the carbazole and anthracene emission intensity, I~c~/I~a~, passes through a minimum at 47 to 57 mol‐% of acrylamide in PSAm copolymers in the blends, indicating that a ‘miscible window’ exists. It also was found that the results are consistent with those obtained by differential scanning calorimetry. The driving force for the miscibility of PHEMA/PSAm may be explained with a mean‐field theory.