کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5201461 | 1502894 | 2015 | 4 صفحه PDF | دانلود رایگان |
The degraded polycarbonate (PC) chains were successfully grafted onto the surface of silica nanoparticles (nano-SiO2) by melt blending. Covalent linkage (Si-O-C bond) was formed between the degraded PC chains and nano-SiO2 under the condition of strong shear force and high temperature. The alcoholysis between carbonate and Si-OH groups, coupled with the condensation reaction between silicon hydroxyls and hydroxyl end groups of degraded chains, mainly contributed to the formation of Si-O-C bond. As expected, the tensile strength and toughness of PC were simultaneously enhanced by incorporating functionalized SiO2. The improvement in tensile properties was attributed to the strong interfacial adhesion between functionalized SiO2 and PC matrix.
Journal: Polymer Degradation and Stability - Volume 119, September 2015, Pages 295-298