Influence of Polyetheleneimine-functionalized MCM-41on Fire Retardancy and Thermal Stability of Poly(vinyl Alcohol)

Hyperbranched polyethylenimine (PEI) grafted mesoporous silica (MCM@PEI), were synthesized and used to develop poly(vinyl alcohol) (PVA) nanocomposite. The effects of MCM@PEI on the thermal and flame properties of PVA nanocomposites were studied. In comparison to the pristine mesoporous silica (MCM), the functionalized nanoparticles (MCM@PEIs) showed better dispersion in the PVA matrix. Moreover, improvement in thermal properties of PVA composites was confirmed by the enhanced thermal stability and char yield. Incorporation of MCM@PEI in PVA lead to significant drop of the heat release rate (HRR) and the total heat release (THR).

کلیدواژه ها:

Nanocomposite ، PVA ، Nanofiller ، MCM-41