Influence of lactic acid-grafted multi-walled carbon nanotube (LA-g-MWCNT) on the electrical and rheological properties of polycarbonate/poly(lactic acid)/ LA-g-MWCNT composites

Kwon

J of Applied Polymer Sci

2018

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The gloss properties of the polycarbonate (PC)/poly(methyl methacrylate‐acrylonitrile‐butadiene‐styrene) (MABS) blend with styrene‐acrylonitrile‐co‐glycidyl methacrylate (SAN‐co‐GMA) as a compatibilizing agent were investigated. For the PC/poly(MABS)/SAN‐co‐GMA (65/15/20, wt %) blend surface, the reduction of gloss level was observed most significantly when the GMA content was 0.1 wt %, compared with the blends with 0.05 wt % GMA or without GMA content. The gloss level of the PC/poly(MABS)/SAN‐co‐GMA (0.1 wt % GMA) blend surface was observed to be 35, which showed 65% lower than the PC/poly(MABS)/SAN‐co‐GMA blend without GMA content. The gloss reduction was most probably caused by the insoluble fractions of the PC/poly(MABS)/SAN‐co‐GMA blend that were formed by the reaction between the carboxylic acid group in poly(MABS) and epoxy group in SAN‐co‐GMA. The results of optical and transmission electron microscope analysis, spectroscopy study, and rheological properties supported the formation of insoluble structure of the PC/poly(MABS)/SAN‐co‐GMA blend when the GMA content was 0.1 wt %. © 2018 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2018, 135, 46450.

Section: Introductionmentioning

confidence: 99%

Gloss reduction and morphological properties of polycarbonate and poly(methyl methacrylate‐acrylonitrile‐butadiene‐styrene) blends with SAN‐co‐GMA as a reactive compatibilizer

Kwon

J of Applied Polymer Sci

2018

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Polymers for Advanced Techs

“…The PC/ABS/MWCNT nanocomposites showed the EMI SE of 2.3 dB at 1.5 wt% MWCNT loading. Jang et al studied the influence of LA‐g‐MWCNT on the EC of PC/PLA/LA‐g‐MWCNT nanocomposites. The EMI SE of the PC/PLA/MWCNT nanocomposites varied from 3.0 × 10 −10 to 2.8 dB, and the PC/PLA/LA‐g‐MWCNT nanocomposites varied from 3.8 × 10 −3 to 13 dB at MWCNT content between 0.1 to 5.0 phr, respectively.…”

Section: Pc/cnt Nanocompositesmentioning

confidence: 88%

“…Ozone and UV‐ozone were also used for functionalization of MWCNTs (ie, mainly through the oxidation reactions), and these functionalized CNTs were further used in PC/MWCNT nanocomposites . Some grafted MWCNTs such as styrene acrylonitrile (SAN), glass fiber, and lactic acid–grafted MWCNTs (LA‐g‐MWCNTs) have been used by the researchers for fabrication of PC/MWCNT nanocomposites because these grafting materials help in interfacial interaction between MWCNTs and PC matrix . Thus, the functionalized CNTs exhibit improved properties, which are allowing the fabrication of novel nanomaterials and nanodevices.…”

Section: Pc/cnt Nanocompositesmentioning

confidence: 99%

“…PC/ABS/MWCNT nanocomposites were showed EC about 9.3 × 10 −2 S/cm at 1.5 wt% loading of MWCNTs. In another study, Jang et al studied the influence of LA‐g‐MWCNT on the electrical properties of PC/poly(lactic acid) (PLA)/LA‐g‐MWCNT nanocomposites. The electrical conductivities of the PC/PLA/MWCNT and PC/PLA/LA‐g‐MWCNT nanocomposites were observed to be 2.363 × 10 −5 and 0.095 S/cm at 1.0 wt% MWCNT loading, respectively.…”

Section: Pc/cnt Nanocompositesmentioning

confidence: 99%

“…82,83 Some grafted MWCNTs such as styrene acrylonitrile (SAN), glass fiber, and lactic acid-grafted MWCNTs (LA-g-MWCNTs) have been used by the researchers for fabrication of PC/MWCNT nanocomposites because these grafting materials help in interfacial interaction between MWCNTs and PC matrix. [84][85][86] Thus, the functionalized CNTs exhibit improved properties, which are allowing the fabrication of novel nanomaterials and nanodevices. It seems there is still a wide scope of further functionalizing the CNTs and using these for preparing PC/CNT nanocomposites.…”

Section: Functionalization Of Cntsmentioning

confidence: 99%

See 2 more Smart Citations

A review on the mechanical, electrical and EMI shielding properties of carbon nanotubes and graphene reinforced polycarbonate nanocomposites

Bagotia

Choudhary

Sharma

2018

114

Recently, it has been found that carbon nanotubes (CNTs) and graphene could prove to be the most promising carbonaceous fillers in polymers nanocomposites field because of their better structural and functional properties. Their uniform dispersion in polymer matrix leads to significant improvements in their several properties. This paper reviews the effect of nanofillers, ie, CNTs, derivatized CNTs, and graphene on the polycarbonate nanocomposite and its application in aerospace, automobile, sports, electronic sectors, and various industries. The comparative analysis of carbon‐based fillers on the different properties of polycarbonate nanocomposites is also included.

Electrical conductivity andEMIshielding effectiveness of polyurethane foam–conductive filler composites

J of Applied Polymer Sci

Lee

Jang

et al. 2016

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The morphological, electrical, and thermal properties of polyurethane foam (PUF)/single conductive filler composites and PUF/hybrid conductive filler composites were investigated. For the PUF/single conductive filler composites, the PUF/nickel‐coated carbon fiber (NCCF) composite showed higher electrical conductivity and electromagnetic interference shielding effectiveness (EMI SE) than did the PUF/multiwall carbon nanotube (MWCNT) and PUF/graphite composites; therefore, NCCF is the most effective filler among those tested in this study. For the PUF/hybrid conductive fillers PUF/NCCF (3.0 php)/MWCNT (3.0 php) composites, the values of electrical conductivity and EMI SE were determined to be 0.171 S/cm and 24.7 dB (decibel), respectively, which were the highest among the fillers investigated in this study. NCCF and MWCNT were the most effective primary and secondary fillers, and they had a synergistic effect on the electrical conductivity and EMI SE of the PUF/NCCF/MWCNT composites. From the results of thermal conductivity and cell size of the PUF/conductive filler composites, it is suggested that a reduction in cell size lowers the thermal conductivity of the PUF/conductive filler composites. © 2016 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2017, 134, 44373.