TY - JOUR
T1 - 1,2,4-Triazole and quinoxaline based polyimide reinforced with neat and epoxide-end capped modified SiC nanoparticles: Study thermal, mechanical and photophysical properties
AU - Bazzar, Masoomeh
AU - Ghaemy, Mousa
PY - 2013/9/24
Y1 - 2013/9/24
N2 - In this paper, properties of nanocomposite films which were prepared from a new polyimide and SiC nanoparticles via two simple methods are reported: (1) SiC nanoparticles were firstly functionalized with epoxide-end groups (mSiC) and then solution blended with poly(triazole-imide) (PTAI) in DMAc. The homogeneous solution was heated in vacuum to give PTAI/mSiC film. (2) A new diamine containing 1,2,4-triazole ring and a commercial dianhydride was reacted in situ in the presence of native SiC nanoparticles to give a homogeneous poly(amic acid) PAA/SiC mixture which was then heated in vacuum under high temperature thermal process to give PTAI/SiC film. The nanocomposite films were tested for different properties including thermal using TGA and DMTA, mechanical and photophysical. The results showed that strong chemical bonding between SiC nanoparticles and the polymer matrix contributed to the enhanced Tg from 300 °C to >350 °C, tensile strength from 108 MPa to 165 MPa and temperature of 5% weight loss (T5%) from 380 °C to 500 °C. The photoluminescence intensity of the nanocomposites increased and the spectra showed blue shift with increasing SiC content.
AB - In this paper, properties of nanocomposite films which were prepared from a new polyimide and SiC nanoparticles via two simple methods are reported: (1) SiC nanoparticles were firstly functionalized with epoxide-end groups (mSiC) and then solution blended with poly(triazole-imide) (PTAI) in DMAc. The homogeneous solution was heated in vacuum to give PTAI/mSiC film. (2) A new diamine containing 1,2,4-triazole ring and a commercial dianhydride was reacted in situ in the presence of native SiC nanoparticles to give a homogeneous poly(amic acid) PAA/SiC mixture which was then heated in vacuum under high temperature thermal process to give PTAI/SiC film. The nanocomposite films were tested for different properties including thermal using TGA and DMTA, mechanical and photophysical. The results showed that strong chemical bonding between SiC nanoparticles and the polymer matrix contributed to the enhanced Tg from 300 °C to >350 °C, tensile strength from 108 MPa to 165 MPa and temperature of 5% weight loss (T5%) from 380 °C to 500 °C. The photoluminescence intensity of the nanocomposites increased and the spectra showed blue shift with increasing SiC content.
U2 - 10.1016/j.compscitech.2013.07.005
DO - 10.1016/j.compscitech.2013.07.005
M3 - Article
VL - 86
SP - 101
EP - 108
JO - Composites Science and Technology
JF - Composites Science and Technology
SN - 0266-3538
ER -