Flame-retardant polypropylene/multiwall carbon nanotube nanocomposites: Effects of surface functionalization and surfactant molecular weight
Document Type
Article
Publication Date
1-1-2014
Abstract
Flame-retardant polypropylene (PP)/carbon nanotubes (CNTs) nanocomposites influenced by surface functionalization and surfactant molecular weights are studied. 3-Aminopropyl-triethoxysilane (APTES) is utilized to modify the CNTs (f-CNTs), and maleic-anhydride-grafted PP (MAPP) with two molecular weights (M?n of 800 and 8000 g mol-1) is used to further improve the dispersion of f-CNTs in the PP matrix. Thermal gravimetric analysis (TGA) and microscale combustion calorimetry (MCC) reveal that the molecular weight of MAPP directly affects the thermal stability and flammability of PP/f-CNTs PNCs: both MAPP polymers (M?n of 800 and 8000 g mol-1) increase the thermal stability of PP; however, the heat release rate of PP/f-CNTs is reduced in the presence of MAPP (M?n of 800 g mol-1) and increased in the presence of MAPP (M?n of 8000 g mol-1). MAPP (M?n of 800 g mol-1) also results in a lower viscosity of the PP/f-CNTs PNCs compared with pure PP. © 2014 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
Recommended Citation
He, Qingliang; Yuan, Tingting; Yan, Xingru; Ding, Daowei; Wang, Qiang; Luo, Zhiping; Shen, Tom D.; Wei, Suying; Cao, Dapeng; and Guo, Zhanhu, "Flame-retardant polypropylene/multiwall carbon nanotube nanocomposites: Effects of surface functionalization and surfactant molecular weight" (2014). College of Health, Science, and Technology. 822.
https://digitalcommons.uncfsu.edu/college_health_science_technology/822