Mechanical Reinforcement in Thermoplastic Polyurethane Nanocomposite Incorporated with Polydopamine Functionalized Graphene Nanoplatelet

• DOI: 10.1021/acs.iecr.7b03218
• Publication Date: 2017-09-27T09:09:05Z
• Authors: Keping Chen; Qiang Tian; Chunrong Tian; Guanyun Yan; Fen Cao; Shuen Liang; Xiaolin Wang
• Keywords: Thermoplastic polyurethane; In situ polymerization

Thermoplastic polyurethane (TPU) nanocomposites incorporated with polydopamine functionalized graphene nanoplatelet (PDA-GNP) were prepared by in situ polymerization. Fourier transform infrared spectroscopy results indicated that the addition of PDA-GNP could promote formation hydrogen bonding and microphase separation. The microstructure obtained from small-angle neutron scattering increased number while significantly it decreased size hard microdomains. Scanning electron microscopy demonstrated exhibited strong interfacial interactions TPU matrix. In particular, tensile strength, strain at break, toughness TPU/PDA-GNP as low 0.5 wt % 313, 16, 279%, respectively. This individualized phenomenon was attributed to abundant covalent between resulting good compatibility specifically associated changes microstructure.