TY - JOUR
T1 - L-Lysine templated CaCO3 precipitated to flax develops flowery crystal structures that improve the mechanical properties of natural fibre reinforced composites
AU - Alam, P
AU - Fagerlund, P
AU - Hagerstrand, P
AU - Toyryla, J
AU - Amini, S
AU - Tadayon, M
AU - Miserez, A
AU - Kumar, V
AU - Pahlevan, M
AU - Toivakka, M
N1 - paf
PY - 2015/8
Y1 - 2015/8
N2 - We describe how the mechanical properties of natural fibre composites can be improved by precipitating coral-like coatings to the surfaces of reinforcing fibres. We consider three amino-acid templates (L-lysine, glycine and beta-alanine) on calcium carbonate growth to natural fibres. L-Lysine forms reticulate flower-like crystals, beta-alanine forms globular crystals and glycine forms blocky crystals. These coralised fibres are used to reinforce styrene butadiene rubber and when compared against untreated-fibre reinforced composites; we find that at sufficiently high concentrations L-lysine templated mineral coatings improve composite strength by more than 100%. Contrarily, beta-alanine and glycine templated mineral coatings do not improve the composite strength by more than ca. 60% and ca. 40% respectively. Molecular dynamics simulations elucidate the attachment mechanisms for each amino acid and the highest potential is in the L-lysine templated crystals. Finite element analyses reveal the success of L-lysine templated coatings is due to a heightened fibre tractive resistance.
AB - We describe how the mechanical properties of natural fibre composites can be improved by precipitating coral-like coatings to the surfaces of reinforcing fibres. We consider three amino-acid templates (L-lysine, glycine and beta-alanine) on calcium carbonate growth to natural fibres. L-Lysine forms reticulate flower-like crystals, beta-alanine forms globular crystals and glycine forms blocky crystals. These coralised fibres are used to reinforce styrene butadiene rubber and when compared against untreated-fibre reinforced composites; we find that at sufficiently high concentrations L-lysine templated mineral coatings improve composite strength by more than 100%. Contrarily, beta-alanine and glycine templated mineral coatings do not improve the composite strength by more than ca. 60% and ca. 40% respectively. Molecular dynamics simulations elucidate the attachment mechanisms for each amino acid and the highest potential is in the L-lysine templated crystals. Finite element analyses reveal the success of L-lysine templated coatings is due to a heightened fibre tractive resistance.
KW - Fibre/matrix bond
KW - Fibres
KW - Polymer-matrix composites (PMCs)
UR - https://www.webofscience.com/api/gateway?GWVersion=2&SrcApp=aboakademi&SrcAuth=WosAPI&KeyUT=WOS:000356552000010&DestLinkType=FullRecord&DestApp=WOS
U2 - 10.1016/j.compositesa.2015.04.016
DO - 10.1016/j.compositesa.2015.04.016
M3 - Article
SN - 1359-835X
VL - 75
SP - 84
EP - 88
JO - Composites Part A: Applied Science and Manufacturing
JF - Composites Part A: Applied Science and Manufacturing
ER -