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Oligodepsipeptides (oDPs), alternating copolymers of an α-amino acid and an α-hydroxy acid, are typically created by ring-opening polymerization (ROP) of morpholine-2,5-dione derivatives (MDs). In general, oDPs exhibit relatively high glass transition temperatures (Tgs) caused by the strong intermolecular H-bonding between amide and ester bonds. So far, it was not reported that variation at α-amino...
We reported the first Monte Carlo study of incompressible symmetric binary homopolymer blends. Using fast lattice Monte Carlo simulations (Q. Wang, Soft Matter 5 (2009) 4564–4567) in a semi-grand-canonical ensemble with the cooperative motion algorithm generalized in our previous work (P. Zhang, Q. Wang, J. Phys. Chem. B 118 (2014) 12059–12067) and the finite-size scaling theory, we studied the critical...
In this study, a new polymer artificial muscle based healing-on-demand composite was prepared and characterized. The composite consists of polymer artificial muscle made of commercial fishing line, thermoset host, and thermoplastic particle. Three-point bending damage to the beam sample can be healed even at a constrained boundary condition upon local heating, undergoing a close-then-heal procedure...
A particulate composite dispersed with thermoplastic particles and strain hardened short shape memory polymer fibers was prepared to evaluate its ability to repeatedly heal wide-opened cracks per the two-step close-then-heal (CTH) self-healing scheme. A two-step coating approach was used to enhance the shape fixity and workability of the cold-drawn programmed short polyurethane fibers. The relationship...
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