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Depth Profiling of Poly(methyl methacrylate), Poly(vinyl alcohol) Laminates by Confocal Raman Microspectroscopy

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We report a molecular depth profiling study of a PMMA/PVOH laminate on quartz using confocal Raman microspectroscopy. It is demonstrated that this technique can be successfully employed to study the hydrogen-bonding interaction between the ester and alcohol groups near the interfacial region. The carbonyl, v(C=O), band of PMMA shows significant broadening in the interfacial region. Various PMMA/PVOH laminates with different PMMA molecular weights have been studied, and it is demonstrated that the PMMA layers with lower molecular weight show a greater degree of interpenetration for a given annealing time.

Keywords: Confocal Raman microspectroscopy; Depth profiling; Poly(methyl methacrylate); Poly(vinyl alcohol); Polymer laminate

Document Type: Research Article


Affiliations: Sheffield Hallam University, Materials Research Institute, Pond Street, Sheffield S1 1WB, U.K.

Publication date: May 1, 1996

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