Polymer mutual diffusion measurements using infrared ATR spectroscopy

A technique for measuring mutual diffusion coefficients of polymers in the melt using infrared attenuated total reflectance (ATR) spectroscopy is described. This method measures the dissolution of a polymeric diffusant into a matrix of another polymer and is applicable to any diffusion couple with i...

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Bibliographic Details
Published inMacromolecules Vol. 25; no. 19; pp. 5069 - 5073
Main Authors Van Alsten, John G, Lustig, Steven R
Format Journal Article
LanguageEnglish
Published Washington, DC American Chemical Society 01.09.1992
Subjects
Applied sciences
Exact sciences and technology
Miscellaneous
Organic polymers
Physicochemistry of polymers
Properties and characterization
Infrared spectrometry
Molten state
Total attenuated reflection
Methyl methacrylate polymer
Interdiffusion
Polymer
Styrene polymer
Measurement method
Experimental study
Activation energy
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Summary:A technique for measuring mutual diffusion coefficients of polymers in the melt using infrared attenuated total reflectance (ATR) spectroscopy is described. This method measures the dissolution of a polymeric diffusant into a matrix of another polymer and is applicable to any diffusion couple with infrared-distinguishable bands. In situ measurements of the diffusion of various molecular weight polystyrenes and the temperature dependence of the diffusion of poly(methyl methacrylate) are presented.
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ark:/67375/TPS-B6PB5GSJ-Z
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ISSN:0024-9297
1520-5835
DOI:10.1021/ma00045a037