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Pyrolysis mass spectrometry analysis of poly(vinyl acetate), poly(methyl methacrylate) and their blend coalesced from inclusion compounds formed with γ-cyclodextrin
Date
2006-01-01
Author
Uyar, Tamer
Aslan, Evren
Tonelli, Alan E.
Hacaloğlu, Jale
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This work is licensed under a
Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License
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Direct insertion probe pyrolysis mass spectrometry (DIP-MS) analyses of poly(methyl methacrylate) (PMMA), poly(vinyl acetate) (PVAc) and binary PMMA/PVAc guests, coalesced from their inclusion compounds (ICs) formed with host gamma-cyclodextrin (gamma-CD) through removal of the gamma-CD host, have been performed. A slight increase in the thermal stabilities of the coalesced polymers were recorded both by TGA and DIP-MS compared to the corresponding as-received polymers. The DIP-MS observations pointed out that the thermal stability and degradation products of these polymers are affected once they are included inside the IC channels created by the stacked host gamma-CDs. DIP-MS observations suggested that the degradation mechanisms for PMMA and PVAc chains in their coalesced blend were significantly altered from those observed in their as-received and solution blended samples. This was attributed to the presence of specific molecular interactions between the intimately mixed PMMA and PVAc chains in their coalesced blend.
Subject Keywords
Cyclodextrin
,
Inclusion compound
,
Poly(methyl methacrylate)
,
Poly(vinyl acetate)
,
Blend
,
Thermal degradation
URI
https://hdl.handle.net/11511/31732
Journal
Polymer Degradation and Stability
DOI
https://doi.org/10.1016/j.polymdegradstab.2005.05.002
Collections
Graduate School of Natural and Applied Sciences, Article