Polypropylene/graphene nanoplatelets nanocomposites with high conductivity via solid-state shear mixing
| Autor: | Min Wu, Chao Wang, Xiaoliang Zhao, Chinomso M. Ewulonu, Huang Dayong, Yong Huang |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Materials science
Polymers and Plastics General Chemical Engineering Solid-state Mixing (process engineering) 02 engineering and technology 010402 general chemistry 01 natural sciences chemistry.chemical_compound Exfoliated graphite nano-platelets nanocomposites Polymers and polymer manufacture Physical and Theoretical Chemistry Composite material Polypropylene Nanocomposite high conductivity High conductivity graphene nanoplatelets 021001 nanoscience & nanotechnology 0104 chemical sciences Shear (sheet metal) TP1080-1185 chemistry solid-state shear mixing 0210 nano-technology polypropylene |
| Zdroj: | e-Polymers, Vol 21, Iss 1, Pp 520-532 (2021) |
| ISSN: | 1618-7229 |
| Popis: | The research on facile, low-cost, and green process for the uniform dispersion of graphene nanoplatelets (GNPs) into polymer matrix has always been a considerable challenge in practical applications. The Van der Waals interaction between graphene layers can easily cause aggregation of the nanofillers. Here, we propose a new method to solve this problem by involving solid-state shear mixing to obtain a well-dispersed nanocomposite. The comprehensive properties of nanocomposite, including antistatic properties, mechanical properties, and thermal stability, can be significantly enhanced by this method. The surface resistivity of the nanocomposite can be up to 2.4 × 107 Ω sq−1 under 1 wt% content of GNPs, which is significantly better than the value obtained by conventional melting compounding and meets the required standard of less than 3 × 108 Ω sq−1 for actual application antistatic materials. The impact strength of the nanocomposite increased by 120.8% when compared with neat PP. At the same time, the heat distortion temperature and initial decomposition temperature of the nanocomposite with only 0.5 wt% content of GNPs are improved by 11.7°C and 110°C, respectively. In addition, GNPs is a heterogeneous nucleating agent that leads PP to emerge β crystal form. This study provides an effective and practical reference for the broad-scale industrial preparation of polymer-based graphene nanocomposites. |
| Databáze: | OpenAIRE |
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