TY - JOUR
T1 - Binding Mechanisms between Laser-Welded Polyamide-6.6 and Native Aluminum Oxide
AU - Hirchenhahn, Pierre
AU - Al-Sayyad, Adham
AU - Bardon, Julien
AU - Plapper, Peter
AU - Houssiau, Laurent
N1 - Publisher Copyright:
© 2021 The Authors. Published by American Chemical Society.
PY - 2021/12/14
Y1 - 2021/12/14
N2 - Nowadays, hybrid polymer/metal assemblies experience a growing demand in the industry, especially for transports and biomedical purposes. Those assemblies offer many advantages, such as lightweight structures and corrosion resistance. The main difficulty to assemble them remains. In this sense, laser welding is more than a promising technique because of its rapidity, the absence of intermediate materials, and its high design freedom. Unfortunately, several fundamental aspects are not well understood yet, as the chemical bonding at the interface. For this work, common materials are studied: polyamide-6.6 and aluminum. A previous published work strongly suggests the formation of a C-O-Al bond at the interface, but this information needs to be confirmed and the reaction mechanism is still uncertain. To achieve this goal, two different model samples were prepared. The first ones are spin-coated layers of polyamide-6.6 on mirror polished aluminum; the other samples are made of a layer of N-methylformamide mimicking the reactive part of the polymer, dip-coated on aluminum. Both sample types were analyzed with XPS and ToF-SIMS and display similar results: C-O-Al bond formation at the interface is confirmed and a reaction mechanism is proposed.
AB - Nowadays, hybrid polymer/metal assemblies experience a growing demand in the industry, especially for transports and biomedical purposes. Those assemblies offer many advantages, such as lightweight structures and corrosion resistance. The main difficulty to assemble them remains. In this sense, laser welding is more than a promising technique because of its rapidity, the absence of intermediate materials, and its high design freedom. Unfortunately, several fundamental aspects are not well understood yet, as the chemical bonding at the interface. For this work, common materials are studied: polyamide-6.6 and aluminum. A previous published work strongly suggests the formation of a C-O-Al bond at the interface, but this information needs to be confirmed and the reaction mechanism is still uncertain. To achieve this goal, two different model samples were prepared. The first ones are spin-coated layers of polyamide-6.6 on mirror polished aluminum; the other samples are made of a layer of N-methylformamide mimicking the reactive part of the polymer, dip-coated on aluminum. Both sample types were analyzed with XPS and ToF-SIMS and display similar results: C-O-Al bond formation at the interface is confirmed and a reaction mechanism is proposed.
UR - http://www.scopus.com/inward/record.url?scp=85120888954&partnerID=8YFLogxK
U2 - 10.1021/acsomega.1c04264
DO - 10.1021/acsomega.1c04264
M3 - Article
AN - SCOPUS:85120888954
VL - 6
SP - 33482
EP - 33497
JO - ACS Omega
JF - ACS Omega
SN - 2470-1343
IS - 49
ER -