TY - JOUR
T1 - Visualization of the tensile fracture behaviors at adhesive interfaces between brass and sulfur-containing rubber studied by transmission electron microscopy
AU - Shimizu, Katsunori
AU - Miyata, Tomohiro
AU - Nagao, Tomohiko
AU - Kumagai, Akemi
AU - Jinnai, Hiroshi
N1 - Funding Information:
The authors are sincerely grateful to M. Ageishi for his technical assistance and to I. Kawano for his preparation of ultrathin film from a wire sample for STEM observation. This work was partially supported by JSPS KAKENHI, Japan (Grant Nos. 16H02288 & 19H00905 ), and the ImPACT Program of the Council for Science, Technology and Innovation ( Cabinet Office, Government of Japan ).
Publisher Copyright:
© 2019 Elsevier Ltd
PY - 2019/10/24
Y1 - 2019/10/24
N2 - Composites of polymers and inorganic materials have recently attracted considerable attention as lightweight tough materials. In this study, we examined the structures and fracture paths at the adhesive interfaces between a sulfur-containing rubber compound and brass formed during vulcanization. Samples consisting of brass fillers dispersed in a rubber matrix were subjected to in situ tensile observations using transmission electron microscopy. Upon uniaxial stretching, fracture occurred between the rubber compound and outermost CuxS layers of the adhesive interface. With prolonged vulcanization, the adhesive interface became broader and depletion regions of Cu and Zn appeared inside the particles, indicating sample degradation, owing to outward diffusion of the metal elements into the rubber compound. Fracture of the degraded rubber composite occurred along the depletion regions. These observations demonstrate that the adhesiveness of brass and rubber composites strongly depends on the interfacial structures.
AB - Composites of polymers and inorganic materials have recently attracted considerable attention as lightweight tough materials. In this study, we examined the structures and fracture paths at the adhesive interfaces between a sulfur-containing rubber compound and brass formed during vulcanization. Samples consisting of brass fillers dispersed in a rubber matrix were subjected to in situ tensile observations using transmission electron microscopy. Upon uniaxial stretching, fracture occurred between the rubber compound and outermost CuxS layers of the adhesive interface. With prolonged vulcanization, the adhesive interface became broader and depletion regions of Cu and Zn appeared inside the particles, indicating sample degradation, owing to outward diffusion of the metal elements into the rubber compound. Fracture of the degraded rubber composite occurred along the depletion regions. These observations demonstrate that the adhesiveness of brass and rubber composites strongly depends on the interfacial structures.
KW - Adhesive interface
KW - Brass
KW - In situ tensile deformation experiments
KW - Organic–inorganic interface
KW - Rubber
KW - Tensile fracture
KW - Transmission electron microscopy
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U2 - 10.1016/j.polymer.2019.121789
DO - 10.1016/j.polymer.2019.121789
M3 - Article
AN - SCOPUS:85072277726
VL - 181
JO - Polymer (United Kingdom)
JF - Polymer (United Kingdom)
SN - 0032-3861
M1 - 121789
ER -