TY - CONF
T1 - Magnetic polypropylene nanocomposites
T2 - SPE 2012 Polyolefins and FlexPack Conference
AU - He, Qingliang
AU - Zhu, Jiahua
AU - Wei, Suying
AU - Sun, Luyi
AU - Guo, Zhanhu
PY - 2012
Y1 - 2012
N2 - Magnetic polypropylene (PP) polymer nanocomposites (PNCs) were fabricated with the reinforcing core-shell Fe-Fe2O3 nanoparticles (NPs) synthesized by an in-situ thermal decomposition method. Maleic anhydride functionalized PP (M-PP) with two different molecular weights (M n=800, called LM-PP; Mn=8000, called HM-PP) were found not only serving as surfactant to control the particle size, but also influencing the oxidation degree of the synthesized NPs. With regular PP only, the average nanoparticle size was 15.9 ± 2.2 nm. The NPs size decreased to 10.6 ± 1.3 nm and 14.6 ± 2.7 nm in the presence of LM-PP and HM-PP, respectively. With only 2.4 wt% of M-PP in the PNCs, the complex viscosity was decreased by 86% at the frequency of 0.1 Hz. Enhanced saturated magnetization of the PNCs after introducing LM-PP indicated that the NPs were partially protected by the LM-PP shell and less dominated by the surface oxidation effects. The room temperature Mössbauer spectra analysis confirmed the oxidation degree of the NPs in each PNC and the molecular weight effect of M-PP on the restricted oxidation behavior of the NPs was studied as well.
AB - Magnetic polypropylene (PP) polymer nanocomposites (PNCs) were fabricated with the reinforcing core-shell Fe-Fe2O3 nanoparticles (NPs) synthesized by an in-situ thermal decomposition method. Maleic anhydride functionalized PP (M-PP) with two different molecular weights (M n=800, called LM-PP; Mn=8000, called HM-PP) were found not only serving as surfactant to control the particle size, but also influencing the oxidation degree of the synthesized NPs. With regular PP only, the average nanoparticle size was 15.9 ± 2.2 nm. The NPs size decreased to 10.6 ± 1.3 nm and 14.6 ± 2.7 nm in the presence of LM-PP and HM-PP, respectively. With only 2.4 wt% of M-PP in the PNCs, the complex viscosity was decreased by 86% at the frequency of 0.1 Hz. Enhanced saturated magnetization of the PNCs after introducing LM-PP indicated that the NPs were partially protected by the LM-PP shell and less dominated by the surface oxidation effects. The room temperature Mössbauer spectra analysis confirmed the oxidation degree of the NPs in each PNC and the molecular weight effect of M-PP on the restricted oxidation behavior of the NPs was studied as well.
KW - Iron(iii) oxide
KW - Magnetic
KW - Maleic anhydride grafted polypropylene
KW - Polypropylene nanocomposites
KW - Rheology
UR - http://www.scopus.com/inward/record.url?scp=84890351490&partnerID=8YFLogxK
M3 - 论文
AN - SCOPUS:84890351490
Y2 - 26 February 2012 through 29 February 2012
ER -