TY - JOUR
T1 - Enhanced stress transfer and thermal properties of polyimide composites with covalent functionalized reduced graphene oxide
AU - Cao, Li
AU - Sun, Qingqing
AU - Wang, Haixia
AU - Zhang, Xingxiang
AU - Shi, Haifeng
N1 - Generated from Scopus record by KAUST IRTS on 2023-09-21
PY - 2015/1/1
Y1 - 2015/1/1
N2 - This work prepares (3-aminopropyl) trimethoxysilane (APTMS)-functionalized reduced graphene oxide (APTMS-rGO)/polyimide (PI) composite (APTMS-rGO/PI) through in-situ polymerization. NH2-functionalized rGO coupled by APTMS demonstrates the good reinforced efficiency in mechanical and thermal properties, which is ascribed to the covalent-functionalized PI matrix by APTMS-rGO sheets. The uniform dispersion of APTMS-rGO increases the glass transition temperature (Tg) and the thermal decomposition temperature (Td), exhibiting 21.7 °C and 44 °C improvements, respectively. The tensile strength of the composites with 0.3 wt% APTMS-rGO is 31% higher than that of neat PI, and Young's modulus is 35% higher than that of neat PI. Raman spectroscopy show the obvious G band shift, and also clearly demonstrates the enhanced interfacial interaction between rGO nanofillers and PI matrix. The high mechanical property of the APTMS-rGO/PI composites is attributed to the covalent functionalized GO by NH2 groups and its good dispersion in comparison with GO.
AB - This work prepares (3-aminopropyl) trimethoxysilane (APTMS)-functionalized reduced graphene oxide (APTMS-rGO)/polyimide (PI) composite (APTMS-rGO/PI) through in-situ polymerization. NH2-functionalized rGO coupled by APTMS demonstrates the good reinforced efficiency in mechanical and thermal properties, which is ascribed to the covalent-functionalized PI matrix by APTMS-rGO sheets. The uniform dispersion of APTMS-rGO increases the glass transition temperature (Tg) and the thermal decomposition temperature (Td), exhibiting 21.7 °C and 44 °C improvements, respectively. The tensile strength of the composites with 0.3 wt% APTMS-rGO is 31% higher than that of neat PI, and Young's modulus is 35% higher than that of neat PI. Raman spectroscopy show the obvious G band shift, and also clearly demonstrates the enhanced interfacial interaction between rGO nanofillers and PI matrix. The high mechanical property of the APTMS-rGO/PI composites is attributed to the covalent functionalized GO by NH2 groups and its good dispersion in comparison with GO.
UR - https://linkinghub.elsevier.com/retrieve/pii/S1359835X14003170
UR - http://www.scopus.com/inward/record.url?scp=84908325146&partnerID=8YFLogxK
U2 - 10.1016/j.compositesa.2014.10.007
DO - 10.1016/j.compositesa.2014.10.007
M3 - Article
SN - 1359-835X
VL - 68
SP - 140
EP - 148
JO - Composites Part A: Applied Science and Manufacturing
JF - Composites Part A: Applied Science and Manufacturing
ER -