Processing and morphological development of carbon black filled conducting blends using a binary host of poly(styrene co-acrylonitrile) and poly(styrene)

Cheah, K; Forsyth, Maria; Simon, George P

doi:10.1002/1099-0488(20001201)38:23<3106::aid-polb120>3.0.co;2-2

Cited by 72 publications

(65 citation statements)

References 26 publications

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“…30 Especially for rubber toughened polymers, a large amount of literature has been published focusing on the influence of rubber size, rubber type, and compatibilizers on the mechanical properties. Recently, co-continuous morphology is garnering much attention due to the better combination of component 35 properties compared to the blends with a droplet-in-matrix morphology, which leads to a potential enhancement of mechanical, optical, conductive, and transport properties [2][3][4][5][6][7][8][9][10][11][12][13] . Generally, if two polymers are processed under proper conditions of composition and viscosity ratio, it may be possible to cause the 40 two components to form co-continuous interlocking phases regardless of miscibility, which is called phase co-continuity.…”

Section: Introductionmentioning

confidence: 99%

“…Varied research has been done to investigate the cocontinuous structured polymer composites via various techniques, including the solvent extraction technique, microscopy, and rheological analysis [11,[13][14][15][16][17][18][19][20][21][22][23][24][25][26][27][28][29] . Besides measurements like dynamic mechanical analysis (DMTA), tests such as stress-strain behavior, 55 impact properties, and electrical conductivity or resistivity are useful in distinguishing between disperse and co-continuous structures [9][10][11] . However, the mechanism of formation of cocontinuous structures during processing, and whether a cocontinuous structure is stable or an intermediate step that 60 eventually transforms into dispersed morphology, is not yet fully understood or clearly described.…”

Section: Introductionmentioning

confidence: 99%

“…However, since high coalescence is required of the dispersed particles to form a co-continuous 5 morphology, adding compatibilizers will further narrow down, by decreasing the probability of coalescence, the composition range to form a co-continuous structure in an immiscible system [36][37] . Willis et al observed a narrowed composition interval of the cocontinuous structures when adding polyethylene-based ionomer 10 into the polypropylene/polyamide blends [38] . It is also reported by Zhang et al.…”

Section: Introductionmentioning

confidence: 99%

“…Pellets were preheated for 5 min at 200 °C and were then compressed for 3 min under a pressure of 10 MPa at 200 °C. After the pressure was released, the molded samples 10 were removed from the press and cooled down to room temperature on a tabletop at STP. 20 The morphology of the blends was studied by SEM after preferential etching of the POE phase in n-heptane for 2 h at 80 °C.…”

Section: Introductionmentioning

confidence: 99%

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Morphology development of PP/POE blends with high loading of magnesium hydroxide

et al. 2015

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The influence of high loading magnesium hydroxide (Mg(OH) 2 , MDH) on the morphology and properties of the polypropylene (PP)/ethylene-octene copolymer (POE) blends has been investigated via scanning electron microscopy, dynamic mechanical thermal analysis and tensile mechanical testing. It was demonstrated that the mechanical properties, especially the elongation at break, are highly related to the phase structure exhibited by the composites. In the PP/POE 90/10 and 70/30 blends, the addition of a high 10 loading of MDH lowered the average diameter of the dispersed POE domains, also the MDH and POE domains were separately dispersed in the PP matrix. Meanwhile, the elongation at break of the samples sharply declined to an unacceptable level. While in the PP/POE 50/50 blends, a co-continuous structure was formed and it could be maintained even after large amount of MDH was added. The co-continuous structure was found to be a key factor for tolerating high loading of additives and retaining acceptable 15 mechanical properties, especially the elongation at break. Fig. 6 SEM micrographs of the PP/POE/MDH composites (weight ratio of PP/POE as 50/50) with different MDH contents: (a) 50 wt%; (b) 55 wt%; (c) 60 wt% 75

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Morphology development of PP/POE blends with high loading of magnesium hydroxide

et al. 2015

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“…is a common way to decrease the resistivity of PA6. When the loading of conductive particles exceeds a critical point, which is called ''percolation threshold,'' [1][2][3][4][5][6][7][8][9][10][11] the volume resistivity of PA6 will decrease rapidly with increase of these conductive particles. This phenomenon is usually called the ''percolation phenomenon.''…”

Section: Introductionmentioning

confidence: 99%

Effect of Mixing Process and Morphologies on the Electrical Conductivity of PA6/EVA/CB Composites

Wang

Xu³

et al. 2011

Polymer-Plastics Technology and Engineering

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Nylon6 (PA6)/Ethylene-(vinyl acetate) (EVA)/carbon black (CB) composites with different electrical conductivity were prepared in an internal mixer. The factors influencing the electrical conductivity of the ternary composites were investigated, including mixing mode, mixing time and mass ratio of PA6 and EVA, and so on. Among three kinds of PA6=EVA=CB composites, including ones prepared by directly mixing (composites A), EVA and CB were mixed prior to melt-compounding with PA6 (composites B) and PA6 and CB were mixed prior to melt-compounding with EVA (composites C), the mixing time only significantly influenced the electrical conductivity of composites A. Good conductivity of the composites could be realized because the distance between CB particles became closer with the increasing of mixing time. However, the mixing time has no effect on the electrical properties of the composites B and the composites C, due to there were no CB particles migrated phenomenon happened. Scanning electron microscopy (SEM) was used to assess the fracture surface morphologies and the dispersion of the CB particles. The results showed that the dispersion of the CB particles significantly affects the electrical conductivity of the composites. Based on the study of the influence of various mass ratios of EVA and PA6 on the morphologies and electrical properties of PA6=EVA composites filled with 10 phr (parts per hundred resins) CB particles, we suggested that the mass ratio of EVA and PA6 affected the volume resistivity of the ternary composites significantly. In addition, the composites were almost insulation when the mass ratios of EVA and PA6 were 80=20 and 70=30, while the composites became conductivity with the mass ratio of EVA and PA6 higher than 60=40. The PA6=EVA=CB composites which CB particles locate at the interface of EVA and PA6 have the lowest volume resistivity when the mass ratio of two components was 60=40.

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Semi‐conductive Polymer Composites for Power Cables

Li¹,

Du²,

Zhao³

et al. 2021

Polymer Composites for Electrical Engineering

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Processing and morphological development of carbon black filled conducting blends using a binary host of poly(styrene co-acrylonitrile) and poly(styrene)

Cited by 72 publications

References 26 publications

Morphology development of PP/POE blends with high loading of magnesium hydroxide

Morphology development of PP/POE blends with high loading of magnesium hydroxide

Effect of Mixing Process and Morphologies on the Electrical Conductivity of PA6/EVA/CB Composites

Semi‐conductive Polymer Composites for Power Cables

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