Photothermal triggering of self-healing processes applied to the reparation of bio-based polymer networks

被引：43

作者：

Altuna, F. I. ^{[1
,2
]}

Antonacci, J. ^{[3
]}

Arenas, G. F. ^{[3
]}

Pettarin, V. ^{[1
,2
]}

Hoppe, C. E. ^{[1
,2
]}

Williams, R. J. J. ^{[1
,2
]}

机构：

[1] Univ Mar del Plata, Inst Mat Sci & Technol INTEMA, Av JB Justo 4302,B7608FDQ, Mar Del Plata, Buenos Aires, Argentina

[2] Natl Res Council CONICET, Av JB Justo 4302,B7608FDQ, Mar Del Plata, Buenos Aires, Argentina

[3] Univ Mar del Plata, Fac Engn, Laser Lab, Dept Phys, JB Justo 4302,B7608FDQ, Mar Del Plata, Buenos Aires, Argentina

来源：

MATERIALS RESEARCH EXPRESS | 2016年 / 3卷 / 04期

关键词：

polymeric nanocomposite; photothermal effect; self-healing; SHAPE-MEMORY; GOLD NANOPARTICLES; CROSS-LINKERS; LINKING; DAMAGE; HEAT;

D O I：

10.1088/2053-1591/3/4/045003

中图分类号：

T [工业技术];

学科分类号：

120111 [工业工程];

摘要：

Green laser irradiation successfully activated self-healing processes in epoxy-acid networks modified with low amounts of gold nanoparticles (NPs). A bio-based polymer matrix, obtained by crosslinking epoxidized soybean oil (ESO) with an aqueous citric acid (CA) solution, was self-healed through molecular rearrangements produced by transesterification reactions of beta-hydroxyester groups generated in the polymerization reaction. The temperature increase required for the triggering of these thermally activated reactions was attained by green light irradiation of the damaged area. Compression force needed to assure a good contact between crack faces was achieved by volume dilatation generated by the same temperature rise. Gold NPs dispersed in the polymer efficiently generated heat in the presence of electromagnetic radiation under plasmon resonance, acting as nanometric heating sources and allowing remote activation of the self-healing in the crosslinked polymer.

引用

页数：11

共 43 条

[1]

Self-healable polymer networks based on the cross-linking of epoxidised soybean oil by an aqueous citric acid solution [J].