Molybdenum disulfide of modified in situ as a nanofiller for enhanced mechanical properties and thermal properties of polypropylene composites

• DOI: 10.1002/pc.27167
• Publication Date: 2022-11-21T11:01:27Z
• Authors: Haipeng Dong; Minghui Liu; Hongliang Li; Jinhui Wu; Zenan Wu; Baikang Zhu; Lu Zhang; Tao Hengcong
• Keywords: Thermogravimetric analysis; Polypropylene; Molybdenum disulfide; Thermal Stability; Exfoliation joint

Abstract Few‐layer molybdenum disulfide (MoS 2 ) was prepared by liquid phase exfoliation with in‐situ modification as a nanofiller for polypropylene (PP). Scanning and transmission electron microscopies (SEM, TEM) showed uniform dispersion excellent adhesion of MoS within the PP matrix. When centrifuged at 1000 rpm, mechanical properties composite were greatly improved adding only 0.5 wt.% . The yield strength, bending modulus, impact strength increased 2.3%, 8.9%, 44.03%, respectively. X‐ray diffraction (XRD) differential scanning calorimetry (DSC) that enhanced composites related to crystallographic transformation. Thermogravimetric analysis (TGA) incorporation maximum weight‐loss temperature approximately 30°C. mechanisms increasing thermal stability have been thoroughly demonstrated band energy analysis. nanosheets high aspect ratios strong insulation change in gap width compared bulk , which is resulting stronger interactions /PP substrate interface. Furthermore, due outstanding carrier rigid thermally stable materials, displayed properties. In addition, unlike PP, melt flow rate (MFR) materials more conducive downstream product processing. This will further promote application scope composites.