TY - JOUR
T1 - Surface modification of carbon fiber as a protective strategy against thermal degradation
AU - Athulya Wickramasingha, Y.
AU - Dharmasiri, Bhagya
AU - Randall, James D.
AU - Yin, Yanting
AU - Andersson, Gunther G.
AU - Nepal, Dhriti
AU - Newman, Ben
AU - Stojcevski, Filip
AU - Eyckens, Daniel J.
AU - Henderson, Luke C.
PY - 2022/2
Y1 - 2022/2
N2 - Carbon fibers were surface modified with acrylate-derived polymers with aromatic side chains, to protect the fiber when exposed to high temperatures. The surface modification process induced a significant increase in tensile strength (23.7%) and tensile modulus (8%), for the benzyl-bearing side chain and retained superior tensile strength (20%) and tensile modulus (7%) after heating to 600 °C. Commercial carbon fibres gave a significant decrease in tensile strength and modulus, 7% and 4%, respectively, when exposed to the same conditions. This suggests that the surface modification process provides a protective effect against thermal degradation, with possible application in carbon fibre recycling. The interfacial shear strength (IFSS) showed significant improvement before (up to 208%) and after (up to 84%) exposure to high temperatures. Analysis of the carbon fiber surface by XPS suggests that the surface bound polymer becomes more graphitic, potentially via the fusion of the aromatic side chains.
AB - Carbon fibers were surface modified with acrylate-derived polymers with aromatic side chains, to protect the fiber when exposed to high temperatures. The surface modification process induced a significant increase in tensile strength (23.7%) and tensile modulus (8%), for the benzyl-bearing side chain and retained superior tensile strength (20%) and tensile modulus (7%) after heating to 600 °C. Commercial carbon fibres gave a significant decrease in tensile strength and modulus, 7% and 4%, respectively, when exposed to the same conditions. This suggests that the surface modification process provides a protective effect against thermal degradation, with possible application in carbon fibre recycling. The interfacial shear strength (IFSS) showed significant improvement before (up to 208%) and after (up to 84%) exposure to high temperatures. Analysis of the carbon fiber surface by XPS suggests that the surface bound polymer becomes more graphitic, potentially via the fusion of the aromatic side chains.
KW - Carbon Fiber
KW - High Temperature
KW - Sizing
KW - Surface Modification
UR - http://www.scopus.com/inward/record.url?scp=85120831105&partnerID=8YFLogxK
UR - http://purl.org/au-research/grants/ARC/IH140100018
UR - http://purl.org/au-research/grants/ARC/IC160100032
UR - http://purl.org/au-research/grants/ARC/DP140100165
UR - http://purl.org/au-research/grants/ARC/DP180100094
U2 - 10.1016/j.compositesa.2021.106740
DO - 10.1016/j.compositesa.2021.106740
M3 - Article
AN - SCOPUS:85120831105
SN - 1359-835X
VL - 153
JO - Composites Part A: Applied Science and Manufacturing
JF - Composites Part A: Applied Science and Manufacturing
M1 - 106740
ER -