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Please use this identifier to cite or link to this item: http://hdl.handle.net/1942/2487

Title: Comparative morphological study of poly(dioxolane)/poly(methyl methacrylate) segmented networks and blends by C-13 solid-state NMR and thermal analysis
Authors: ADRIAENSENS, Peter
STORME, Liesbet
Du Prez, FE
Issue Date: 2002
Citation: MACROMOLECULES, 35(10). p. 3965-3970
Abstract: Nanostructured amphiphilic segmented networks based on poly(1,3-dioxolane) (PDXL) and poly(methyl methacrylate) (PMMA) have been synthesized by radical copolymerization of alpha,omega-diacrylate PDXL with methyl methacrylate (MMA). The corresponding polymer blends have been prepared by the radical polymerization of MMA in the presence of alpha,omega-dihydroxy-PDXL. The multiphase behavior of the segmented networks and polymer blends have been compared by making use of solid-state C-13 CP/MAS NMR spectroscopy, dynamic mechanical analysis (DMA), differential scanning calorimetry (DSC), and thermogravimetrical analysis (TGA). For the network structures, the combined analysis of the proton spin-lattice relaxation times (T-1H) and proton spin-lock relaxation times (T-1rhoH) revealed small PDXL domain sizes between 1 and 20 nm. DSC and DMA analysis also showed the forced compatibility of the network components. In the case of the polymer blends, the phase morphology strongly depends on the PDXL weight fraction. For blends with PDXL fractions higher than 20 wt %, T-1H relaxometry, DSC, and DMA analysis evidenced the presence of a heterogeneous phase morphology (domain sizes > 20 nm) that allows for the crystallization of the PDXL-rich domains.
Notes: Limburgs Univ Ctr, Inst Mat Res, Dept SBG, B-3590 Diepenbeek, Belgium. State Univ Ghent, Dept Organ Chem, Div Polymer Chem, B-9000 Ghent, Belgium.Du Prez, FE, Limburgs Univ Ctr, Inst Mat Res, Dept SBG, Univ Campus,Bldg D, B-3590 Diepenbeek, Belgium.
URI: http://hdl.handle.net/1942/2487
DOI: 10.1021/ma0117763
ISI #: 000175378600028
ISSN: 0024-9297
Category: A1
Type: Journal Contribution
Validation: ecoom, 2003
Appears in Collections: Research publications

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