Yoo, Hye Jin Lee, Byung Hak Mahapatra, Sibdas Singha Yang, Cheol-Min Cho, Jae Whan 2024-01-20T00:03:17Z 2024-01-20T00:03:17Z 2021-09-03 2017-11-15 0021-8995 https://pubs.kist.re.kr/handle/201004/122060 Poly(-caprolactone)diol (PCL)-functionalized nanodiamonds (f-NDs) were synthesized using a click chemistry reaction between the azide-moiety PCL and alkyne-moiety NDs and were incorporated into shape memory polyurethane (PU) at f-ND concentrations of 0, 0.5, 1, and 2 wt % to produce high-performance shape memory nanocomposites. The PU/f-ND nanocomposites exhibited better shape recovery, shape recovery stress, and breaking stresses than pure PU. Shape recovery of greater than 95% was demonstrated for all the nanocomposites in the third cycle, and the shape recovery stresses increased significantly with the f-ND content. These enhanced mechanical and shape recovery properties are ascribed to increased interactions between the f-NDs and PU matrix due to incorporation of click-coupled f-NDs. The click-coupled NDs can be used as nanofillers to enhance the mechanical and shape memory properties of polymers. (c) 2017 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2017, 134, 45465. English WILEY WALLED CARBON NANOTUBES POLYMER NANOCOMPOSITES YOUNGS MODULUS CHEMISTRY GRAPHENE COMPOSITES PERFORMANCE NANOFIBERS HYDROGELS DELIVERY Polyurethane nanocomposites with click-coupled nanodiamonds exhibiting enhanced mechanical and shape memory effects Article 10.1002/app.45465 1 JOURNAL OF APPLIED POLYMER SCIENCE, v.134, no.43 JOURNAL OF APPLIED POLYMER SCIENCE 134 43 scie scopus 000407604400024 2-s2.0-85022334550 Polymer Science Polymer Science Article WALLED CARBON NANOTUBES POLYMER NANOCOMPOSITES YOUNGS MODULUS CHEMISTRY GRAPHENE COMPOSITES PERFORMANCE NANOFIBERS HYDROGELS DELIVERY composites graphene and fullerenes mechanical properties nanotubes polyurethane