X. M. Feng, P. Y. Wen, Y. Cheng, L. Liu, Q. L. Tai, Y. Hu and K. M. Liew (2016) Defect-free MoS2 nanosheets: Advanced nanofillers for polymer nanocomposites. Journal/Composites Part a-Applied Science And Manufacturing 81 61-68. [In English]
Web link: http://dx.doi.org/10.1016/j.compositesa.2015.11.002
Keywords: ,Layered structures, Polymer-matrix composites (PMCs), Mechanical, properties, Thermal analysis, EXFOLIATED MOS2, GRAPHENE SHEETS, COMPOSITES, N,N-DIMETHYLFORMAMIDE, ULTRASOUND

Abstract: The preparation of defect-free MoS2 nanosheets is a key challenge and essential for practical applications. Herein the dodecanethiol was firstly performed as the antioxidant and surface modifier to produce the defect-free MoS2 by direct ultrasonication of bulk MoS2 in N,N-dimethylformamide. Incorporating defect-free MoS2 into polyethylene obviously improved the properties of PE/MoS2 nanocomposites. For crystallization under quiescent condition, the half crystallization time (t(0.5)) of nanocomposites containing 0.2 wt% MoS2 was reduced by 87.0% compared to that of neat PE. A 54.3 degrees C increase in the temperature of maximum weight loss (T-max) was observed by inclusion of as low as 0.7 wt% defect-free MoS2 nanosheets. In addition, the uniformly distributed MoS2 can considerably improve the mechanical properties of composites. These observations suggest that the robust nature, dramatic barrier action of defect free MoS2 and the strong nanosheets/matrix interfacial adhesion would be the motivation to improve the performance of the polymeric nanocomposites. (C) 2015 Elsevier Ltd. All rights reserved.