Poly(methyl methacrylate)‐Assisted Exfoliation of Graphite and Its Use in Acrylonitrile‐Butadiene‐Styrene Composites

Abstract

One of the applications of graphene in whichi ts scalable production is of utmost importance is the development of polymer composites. Amongt he techniques used to produce graphene flakes,t he liquid-phase exfoliation (LPE) of graphite stands out due to its versatility and scalability.H owever,s olvents suitable for the LPE processa re generally toxic and have ah igh boilingp oint, making the processing challenging. The use of low boiling point solvents could be convenient for the processing, due to the easiness of their removal. In this study,the use of poly(methyl methacrylate) (PMMA) as as tabilizing agent is proposed for the production of graphene flakes in al ow boiling point solvent, that is, acetone. The graphene dispersions produced in the mixture acetone-PMMA have higherc oncentration, + 175 %, and contain ah igher percentageo ff ew-layer graphene flakes (< 5layers), that is, + 60 %, compared to the dispersions preparedi na cetone. The as-produced graphene dispersions are used to develop graphene/acrylonitrile-butadiene-styrene composites. The mechanical properties of the pristine polymer are improved, that is, + 22 %i nt he Young's modulus, by adding 0.01 wt. %o fg raphene flakes. Moreover, ad ecrease of % 20 %i nt he oxygen permeability is obtained by using 0.1wt. %o fg raphene flakes filler,c ompared to the unloaded matrix.[a] S.Supporting information and the ORCID identification number(s) for the author(s) of this articlecan be found under: https://doi.

Mechanochemical synthesis of multifunctional kaolin@BiVO4 hybrid pigments for coloring and reinforcing of acrylonitrile‐butadiene‐styrene

“…[2][3][4] In order to enhance the mechanical and thermal performance and simultaneously reduce the cost of ABS products, various fillers were frequently incorporated into polymer matrix. [5][6][7][8] Among of various fillers, clay minerals have been recognized one of the promising functional fillers owing to the abundance in nature, green and nontoxicity, unique one/two-dimensional morphologies and low price. [9][10][11][12] Furthermore, with the improvement of living standards, people's requirements toward many consumer goods are no longer limited to a single function, and much attention is paid to the visual effect pursuing the original function.…”

“…It has been widely used in automobile, electronic, business, and communication equipment due to the easy processing, high surface gloss, excellent dimensional stability, good mechanical properties, and chemical‐resistance 2–4 . In order to enhance the mechanical and thermal performance and simultaneously reduce the cost of ABS products, various fillers were frequently incorporated into polymer matrix 5–8 . Among of various fillers, clay minerals have been recognized one of the promising functional fillers owing to the abundance in nature, green and nontoxicity, unique one/two‐dimensional morphologies and low price 9–12 …”