Adhesion force measured by atomic force microscopy for direct carbon fiber-epoxy interfacial characterization

TY - JOUR

T1 - Adhesion force measured by atomic force microscopy for direct carbon fiber-epoxy interfacial characterization

AU - Zheng, Nan

AU - He, Jinmei

AU - Gao, Jiefeng

AU - Huang, Yudong

AU - Besenbacher, Flemming

AU - Dong, Mingdong

PY - 2018/5/5

Y1 - 2018/5/5

N2 - Adhesion force measurement by Atomic force microscopy (AFM) is used to investigate the interfacial interaction of the carbon fiber (CF)/epoxy composite for the first time. The epoxy functionalized AFM tip and three types of carbon fibers with different surface chemistry and morphologies were used in this study. Results show that the Bis (3-aminophenyl) phenyl phosphine oxide (BAPPO) modified CF possesses a much larger adhesion force (72.7 nN) than the as-received and de-sized CF (22.5 nN and 17.9 nN, respectively) due to formation of the chemical bonding between the BAPPO modified CF and the epoxy functionalized tip. Single fiber microbond test demonstrates that the interfacial shear strength (IFSS) of BAPPO modified CF/EP composite is 15% and 22% larger than that of as-received and de-sized CF/EP, respectively. This nanoscale manipulation by AFM provides a new avenue to measure the interfacial adhesion between the CF and epoxy at the molecular level.

AB - Adhesion force measurement by Atomic force microscopy (AFM) is used to investigate the interfacial interaction of the carbon fiber (CF)/epoxy composite for the first time. The epoxy functionalized AFM tip and three types of carbon fibers with different surface chemistry and morphologies were used in this study. Results show that the Bis (3-aminophenyl) phenyl phosphine oxide (BAPPO) modified CF possesses a much larger adhesion force (72.7 nN) than the as-received and de-sized CF (22.5 nN and 17.9 nN, respectively) due to formation of the chemical bonding between the BAPPO modified CF and the epoxy functionalized tip. Single fiber microbond test demonstrates that the interfacial shear strength (IFSS) of BAPPO modified CF/EP composite is 15% and 22% larger than that of as-received and de-sized CF/EP, respectively. This nanoscale manipulation by AFM provides a new avenue to measure the interfacial adhesion between the CF and epoxy at the molecular level.

KW - Adhesion force

KW - Atomic force microscopy

KW - Carbon fiber

KW - Epoxy

KW - Tip functionalization

U2 - 10.1016/j.matdes.2018.02.060

DO - 10.1016/j.matdes.2018.02.060

M3 - Journal article

AN - SCOPUS:85042692203

SN - 0264-1275

VL - 145

SP - 218

EP - 225

JO - Materials and Design

JF - Materials and Design

ER -