Miscibility studies in blends of poly(methyl methacrylate) with poly(styren e-co-methacrylonitrile) using solid-state NMR and fluorescence spectroscopy

Dong Limin, Hill David J.T., Whittaker Andrew K. and Ghiggino Kenneth P. (1994) Miscibility studies in blends of poly(methyl methacrylate) with poly(styren e-co-methacrylonitrile) using solid-state NMR and fluorescence spectroscopy. Macromolecules, 27 20: 5912-5918. doi:10.1021/ma00098a054


Author Dong Limin
Hill David J.T.
Whittaker Andrew K.
Ghiggino Kenneth P.
Title Miscibility studies in blends of poly(methyl methacrylate) with poly(styren e-co-methacrylonitrile) using solid-state NMR and fluorescence spectroscopy
Journal name Macromolecules   Check publisher's open access policy
ISSN 0024-9297
Publication date 1994-01-01
Year available 1994
Sub-type Article (original research)
DOI 10.1021/ma00098a054
Open Access Status Not yet assessed
Volume 27
Issue 20
Start page 5912
End page 5918
Total pages 7
Place of publication WASHINGTON
Publisher ACS
Language eng
Subject 2505 Materials Chemistry
Abstract The miscibility in blends of poly(methyl methacrylate) (PMMA) with poly(styrene-co-methacrylonitrile) (SMAN) was examined by solid-state NMR and fluorescence spectroscopy. The value of the excimer/monomer fluorescence intensity (I(E)/I(M)) in the blends provides a sensitive measure of phase separation. A miscibility window in the blends of PMMA and SMAN containing about 30-65 mol % methacrylonitrile (MAN) monomer has been observed by fluorescence experiments. Measurements of T1pH by solid-state NMR have shown that blends containing 50:50 wt % PMMA blended with each of polystyrene, poly(methacrylonitrile), SMAN (MAN: 18.9 mol %), and SMAN (MAN: 87.6 mol %) are phase-separated. There is an intermolecular penetration between PMMA and copolymers in the blends of PMMA with SMAN (MAN: 43.8 mol %) and SMAN (MAN: 70.9 mol %) at a level of less than about 6 nm. However, the fluorescence data would indicate that intimate mixing does occur below this level. An analysis of the T1pH values for SMAN has indicated that the sequence distribution has an important effect on the interactions in the copolymer system.
Keyword Nonradiative Energy-Transfer
Styrene-Acrylonitrile Copolymers
Excimer Fluorescence
Molecular Probe
Phase-Behavior
Polymer Blends
Poly(2,6-Dimethyl-1,4-Phenylene Oxide)
Compatibility
Poly(Styrene-Co-Acrylonitrile)
Poly(2-Vinylnaphthalene)
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Unknown

Document type: Journal Article
Sub-type: Article (original research)
Collection: Scopus Import - Archived
 
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