6533b833fe1ef96bd129c162
RESEARCH PRODUCT
On the role of multi-functional polyhedral oligomeric silsesquioxane in polystyrene-zinc oxide nanocomposites
Elisabetta MoriciRossella ArrigoNadka Tz. Dintchevasubject
NanocompositeMaterials sciencePolymers and PlasticsnanocompositeGeneral Chemical Engineeringdispersant agentMetals and Alloyschemistry.chemical_elementZincSilsesquioxanechemistry.chemical_compounddispersant agent; nanocomposites; photo-oxidative resistance; POSS; UV shielding; Chemical Engineering (all); Polymers and Plastics; Materials Chemistry; 2506; Metals and AlloysUV shieldingchemistryphoto-oxidative resistancePolymer chemistrynanocompositesMaterials ChemistryChemical Engineering (all)Polystyrene2506POSSdescription
Abstract Multi-functional trisilanol phenyl (TSPH) and trisilanol isobutyl (TSIB) polyhedral oligomeric silsesquioxane (POSS) have been used in the formulation of advanced polystyrene (PS)-zinc oxide (ZnO) nanocomposites. The neat matrix and PS/ZnO-based nanocomposites have been characterized through rheological, morphological, mechanical, and dynamic thermo-mechanical analysis. Both TSPH and TSIB are able to improve the dispersion of ZnO into the polystyrene matrix; furthermore, adding TSIB leads to better results because it facilitates better solubility into the PS matrix and interaction/reaction with the ZnO nanopowder. Finally, the optical properties and photo-oxidative resistance of the nanocomposite films have been evaluated. The POSS molecules synergistically interact with ZnO nanopowder in the protection of PS matrix against photo-oxidative process. The nanocomposite films containing both ZnO and POSS molecules, particularly TSIB, exhibit better UV-shielding properties than the PS/ZnO one, without loss of optical transparency.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2014-11-21 |