TY - JOUR
T1 - A comparison study on mechanical properties of polymer composites reinforced by carbon nanotubes and graphene sheet
AU - Li, Yunlong
AU - Wang, Shijie
AU - Wang, Quan
AU - Xing, Malcolm
PY - 2018/1/15
Y1 - 2018/1/15
N2 - To compare enhancements of mechanical properties of polymer composites reinforced by carbon nanotubes and graphene sheet, molecular models of polymer matrix reinforced by the same weight percentage of carbon nanotubes and graphene sheet are developed. Pull-out process and strain constant method are applied to find mechanical properties of the nano-composites by examining the interfacial interactions between nano-reinforcements and polymer matrices. The results show that about 18% higher in Young's modulus, 8.7% higher in tensile strength, and 5% higher in surface crack energy are obtained for the composites by incorporation of graphene sheet than those by incorporation of carbon nanotubes. Graphene sheet is found to play a better role in delaying the propagations of cracks. To explore the mechanisms on the enhanced tensile and fracture properties, the interfacial interaction energy and shear forces between the nano-reinforcements and polymer matrices, and total van der Waals energy of the polymer composites are examined and interpreted accordingly.
AB - To compare enhancements of mechanical properties of polymer composites reinforced by carbon nanotubes and graphene sheet, molecular models of polymer matrix reinforced by the same weight percentage of carbon nanotubes and graphene sheet are developed. Pull-out process and strain constant method are applied to find mechanical properties of the nano-composites by examining the interfacial interactions between nano-reinforcements and polymer matrices. The results show that about 18% higher in Young's modulus, 8.7% higher in tensile strength, and 5% higher in surface crack energy are obtained for the composites by incorporation of graphene sheet than those by incorporation of carbon nanotubes. Graphene sheet is found to play a better role in delaying the propagations of cracks. To explore the mechanisms on the enhanced tensile and fracture properties, the interfacial interaction energy and shear forces between the nano-reinforcements and polymer matrices, and total van der Waals energy of the polymer composites are examined and interpreted accordingly.
KW - Fracture
KW - Interface/interphase
KW - Mechanical properties
KW - Polymer-matrix composites (PMCs)
UR - http://www.scopus.com/inward/record.url?scp=85029498299&partnerID=8YFLogxK
UR - https://www.scopus.com/record/pubmetrics.uri?eid=2-s2.0-85029498299&origin=recordpage
U2 - 10.1016/j.compositesb.2017.09.024
DO - 10.1016/j.compositesb.2017.09.024
M3 - RGC 21 - Publication in refereed journal
SN - 1359-8368
VL - 133
SP - 35
EP - 41
JO - Composites Part B: Engineering
JF - Composites Part B: Engineering
ER -