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Wax‐Protected Catalyst Microspheres for Efficient Self‐Healing Materials
Author(s) -
Rule J. D.,
Brown E. N.,
Sottos N. R.,
White S. R.,
Moore J. S.
Publication year - 2005
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.200400607
Subject(s) - materials science , wax , microsphere , self healing , catalysis , aqueous suspension , chemical engineering , aqueous solution , composite material , paraffin wax , nanotechnology , organic chemistry , chemistry , medicine , alternative medicine , pathology , engineering
Microspheres of wax containing embedded Grubbs' catalyst are generated by congealing a molten aqueous suspension. Even with a ten‐fold reduction in catalyst concentration from previous systems, these microspheres produce unprecedented levels of toughness recovery in a polymeric self‐healing material (see Figure). Unlike the previously reported systems, samples healed with the wax microspheres show nonlinear fracture behavior. A protocol that addresses this nonlinearity is employed to measure healing efficiency.