Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5204493 | Polymer Degradation and Stability | 2008 | 7 Pages |
Abstract
A series of poly(butylene succinate)/silica (PBS/silica) nanocomposites were prepared by in situ polymerization. Solid-state 29Si NMR and FTIR analysis indicated that silanol-bonded carbonyl groups are established within PBS/silica nanocomposite materials. Rheological effects inherent to the silica filler were evaluated by melt rheological analysis as a function of shear force in the molten state. Despite high shear force, PBS/silica nanocomposites maintained a relatively high melt viscosity, attributable to a network structure resulting from covalent bonding between silica and the polymer chain. Nanocomposite material containing 3.5Â wt% silica exhibited greatly improved mechanical properties. The tensile strength at break and elongation were ca. 38.6Â MPa and 515%, while those of the parent PBS were 26.3Â MPa and 96%, respectively. PBS/silica nanocomposites showed composition dependency on biodegradation ascribable to reduced crystallinity and preferential microbial attack.
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Authors
Sang-Il Han, Jung Seop Lim, Dong Kook Kim, Mal Nam Kim, Seung Soon Im,