TY - GEN
T1 - Isothermal Melt Crystallization of Polyethylene Nanocomposites with Thermally Reduced Graphene and Carbon Black
AU - Abuibaid, Ahmed Z.A.
AU - Iqbal, Muhammad Z.
N1 - Funding Information:
CONCLUSIONS In this work, thermally reduced graphene (TRG) was successfully synthesized by simultaneous thermal exfoliation and reduction method. The synthesized TRG was confirmed by XRD, Raman spectroscopy, and TEM. No change in characteristic melting and crystallization temperatures of neat PE was observed by the addition of TRG or carbon black which is a normal behavior. However, increasing TRG concentration increased the onset of crystallization. The composites were isothermally crystallized and the crystallization data was fitted with Avrami equation using non-linear regression. The results indicate that increasing graphene concentration below percolation threshold showed delayed crystallization whereas at concentrations above the percolation thresholds, a faster crystallization was observed. On the other hands, incorporating CB in PE exhibited delayed crystallization at all CB concentrations ACKNOWLEDGMENT The authors would like to thank Dr. Hussein Awad for his assistance in XRD and Raman, and Efstratios for assistance in SEM characterization. The financial support by UAEU Research Startup Grant 31N269 is highly acknowledged
Publisher Copyright:
© 2019 IEEE.
PY - 2019/5/14
Y1 - 2019/5/14
N2 - In this work, thermally reduced graphene (TRG) was produced by simultaneous thermal exfoliation and reduction of graphite oxide and characterized using x-ray diffraction, Raman spectroscopy, and transmission electron microscopy. TRG/polyethylene (PE) nanocomposites were prepared via solvent blending and cast-film method. The crystallization kinetics of the nanocomposites were investigated by varying TRG concentration and crystallization temperatures. The evolution of crystallization in PE with TRG concentration below and above the percolation threshold limits are reported here. A delayed crystallization was observed at low TRG concentration percolation limits whereas a faster nucleation was exhibited at high TRG concentration percolation threshold. Furthermore, the crystallization results are also compared with conventional PE/carbon black composites.
AB - In this work, thermally reduced graphene (TRG) was produced by simultaneous thermal exfoliation and reduction of graphite oxide and characterized using x-ray diffraction, Raman spectroscopy, and transmission electron microscopy. TRG/polyethylene (PE) nanocomposites were prepared via solvent blending and cast-film method. The crystallization kinetics of the nanocomposites were investigated by varying TRG concentration and crystallization temperatures. The evolution of crystallization in PE with TRG concentration below and above the percolation threshold limits are reported here. A delayed crystallization was observed at low TRG concentration percolation limits whereas a faster nucleation was exhibited at high TRG concentration percolation threshold. Furthermore, the crystallization results are also compared with conventional PE/carbon black composites.
KW - Crystallization
KW - DSC words
KW - Graphene
KW - Nanocomposites
KW - Polyethylene
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U2 - 10.1109/ICASET.2019.8714404
DO - 10.1109/ICASET.2019.8714404
M3 - Conference contribution
AN - SCOPUS:85066984287
T3 - 2019 Advances in Science and Engineering Technology International Conferences, ASET 2019
BT - 2019 Advances in Science and Engineering Technology International Conferences, ASET 2019
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2019 Advances in Science and Engineering Technology International Conferences, ASET 2019
Y2 - 26 March 2019 through 10 April 2019
ER -