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From polyester grafting onto POSS nanocage by ring-opening polymerization to high performance polyester / POSS nanocomposites †
| Content Provider | Semantic Scholar |
|---|---|
| Author | Goffin, A. Duquesne, Emmanuel Raquez, Jean-Marie Miltner, Hans E. Ke, Xiaoxing Alexandre, E. Tendeloo, Gustaaf Van Mele, Bruno Van Dubois, Philippe Francois |
| Copyright Year | 2010 |
| Abstract | Polyester-grafted polyhedral oligomeric silsesquioxane (POSS) nanohybrids selectively produced by ring-opening polymerization of 3-caprolactone and L,L-lactide (A.-L. Goffin, E. Duquesne, S. Moins, M. Alexandre, Ph. Dubois, Eur. Polym. Journal, 2007, 43, 4103) were studied as ‘‘masterbatches’’ by melt-blending within their corresponding commercial polymeric matrices, i.e., poly(3-caprolactone) (PCL) and poly(L,L-lactide) (PLA). For the sake of comparison, neat POSS nanoparticles were also dispersed in PCL and PLA. The objective was to prepare aliphatic polyester-based nanocomposites with enhanced crystallization behavior, and therefore, enhanced thermo-mechanical properties. Wide-angle X-ray scattering and transmission electron microscopy attested for the dispersion of individualized POSS nanoparticles in the resulting nanocomposite materials only when the polyestergrafted POSS nanohybrid was used as a masterbatch. The large impact of such finely dispersed (grafted) nanoparticles on the crystallization behavior for the corresponding polyester matrices was noticed, as evidenced by differential scanning calorimetry analysis. Indeed, well-dispersed POSS nanoparticles acted as efficient nucleating sites, significantly increasing the crystallinity degree of both PCL and PLA matrices. As a result, a positive impact on thermo-mechanical properties was highlighted by dynamic mechanical thermal analysis. |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | https://docnum.umons.ac.be/Access/WebOpenAccess/GetDocument.aspx?Filename=398+Dubois+et+al+J+Mater+Chem+2010+20+9315_9422.pdf&GuidTicket=dbcbf68d-28f1-4ca0-9456-3e399107d1a9 |
| Language | English |
| Access Restriction | Open |
| Subject Keyword | Alpha compositing Calorimetry Calorimetry, Differential Scanning Crystallization FLT4 gene NEAT Particles Nanocomposite Nanocomposites Polyesters Polyhedron Polymers Programmable logic array Transmission Electron Microscopy Transplanted tissue cyclohexanediol isobutyl-polyhedral oligomeric silsesquioxane polyhedral oligomeric silsesquioxane methacrylate |
| Content Type | Text |
| Resource Type | Article |
