Improvement of properties of silica‐filled styrene‐butadiene rubber composites through plasma surface modification of silica

Mathew, George; Huh, Mongyoung; Rhee, John M.; Lee, Myong‐Hoon; Nah, Changwoon

doi:10.1002/pat.482

Cited by 85 publications

(59 citation statements)

References 21 publications

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“…One solution is mechanical mixing using high shear forces for dis-aggregation, whereas another technique is ultrasonic irradiation. Chemical methods can also be used, such as sol-gel processing 21,22 or surface modification [23][24][25] of nanoparticles to increase the compatibility between the nanoparticles and the organic phase. This opens a new way to prepare high performance polymeric materials, as was demonstrated by Fang et al 26 who functionalized GO with polystyrene (PS) chains and used these as reinforcement of the PS matrix.…”

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confidence: 99%

Graphene oxide modified with PMMA via ATRP as a reinforcement filler

et al. 2010

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Graphene is a two-dimensional new allotrope of carbon, which is stimulating great curiosity due to its superior mechanical, electrical, thermal and optical properties. Particularly attractive is the availability of bulk quantities of graphene (G) which can be easily processed by chemical exfoliation, yielding graphene oxide (GO). The resultant oxygenated graphene sheets covered with hydroxyl, epoxy and carboxyl groups offer tremendous opportunities for further functionalization opening plenty of opportunities for the preparation of advanced composite materials. In this work poly(methyl methacrylate) (PMMA) chains have been grafted from the GO surface via atom transfer radical polymerization (ATRP), yielding a nanocomposite which was soluble in chloroform. The surface of the PMMA grafted GO (GPMMA) was characterized by AFM, HRTEM, Raman, FTIR and contact angle. The interest of these novel nanocomposites lies in their potential to be homogenously dispersed in polymeric dense matrices and to promote good interfacial adhesion, of particular relevance in stress transfer to the fillers. PMMA composite films were prepared using different percentages of GPMMA and pristine GO. Mechanical analysis of the resulting films showed that loadings as low as 1% (w/w) of GPMMA are effective reinforcing agents, yielding tougher films than pure PMMA films and even than composite films of PMMA prepared with GO. In fact, addition of 1% (w/w) of GPMMA fillers led to a significant improvement of the elongation at break, yielding a much more ductile and therefore tougher material. Thermal analysis showed an increase of the thermal stability properties of these films providing evidence that strong interfacial interactions between PMMA and GPMMA are achieved. In addition, AFM analysis, in friction force mode, is demonstrated to be an effective tool to analyse the surface filler distribution on polymer matrices.

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confidence: 99%

Graphene oxide modified with PMMA via ATRP as a reinforcement filler

et al. 2010

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“…The thickness of the pellets was measured by using a micrometer. Calculation of the conductivity is as stated below: 22,23 …”

Section: Methodsmentioning

confidence: 99%

“…One solution is mechanical mixing using high shear forces for dis-aggregation whereas another technique is ultrasonic irradiation. Chemical methods can also be used, such as sol-gel processing 20,21 or surface modification 22,23 of nanoparticles to increase the compatibility between nanoparticles and organic phase. Nanosized fillers acting as a part of the microstructure and the interfacial interactions mainly control the properties of the materials.…”

Section: Introductionmentioning

confidence: 99%

Morphology of the Conducting Poly-N-vinylcarbazole-coated Silica Gel Nanocomposites

Basavaraja¹,

Kim²,

Jo³

et al. 2010

Bulletin of the Korean Chemical Society

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We report the effect of surface morphology on the conductivity of the poly-N-vinylcarbazole (PVK)/silica gel (SiO2) nanocomposites as a function of SiO2 weight percentage (%).The polymerization of PVK was initiated by a free-radical polymerization. The surface morphology of the prepared composite shows the incorporation of SiO2 in the prepared PVK-SiO2 (PS) nanocomposites. The conductivity increased from 9.2 × 10 -5 S cm -1 to 9.6 × 10 -4 S cm -1 with the increase in the percentage of silica gel from 5 to 30%. The nanocomposites show a percolation behavior having a threshold value between 15 and 20%.

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“…Among the inorganic substances, silicon dioxide has become greatly important as an active filler of polymers [5][6][7]. Its importance follows from the possibility of controlling its physical properties (by method of synthesis) [8,9] and chemical properties (by surface modification) [10].…”

Section: Introductionmentioning

confidence: 99%

Precipitated silica as filler for polymer electrolyte based on poly(acrylonitrile)/sulfolane

Kurc

2014

J Solid State Electrochem

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The aim of the present work was to perform a preliminary study of the physicochemical properties of hybrid organic-inorganic gel electrolytes for Li-ion batteries based on the PAN/TMS -poly(acrylonitrile)/sulfolane -polymeric matrix and surface-modified precipitated silicas. Modifications were done by means of the so-called dry method using silane U-511 3-methacryloxypropyltrimetoxysilane. Scanning electron microscopy (SEM), noninvasive back scattering method (NIBS), specific surface area (BET), the degree of modification of the silica fillers-Fourier-transform infrared spectroscopy (FT-IR), impedance analysis, and charging/ discharging were carried out. It is found that the silica fillers were homogeneously dispersed in the polymeric matrix, which enhanced conductivity and electrochemical stability of porous polymer electrolytes. Applicability of the prepared gel electrolytes for the Li-ion technology was estimated on the basis of specific conductivity measurements. It was shown that modification of the silica surface by the silane causes an increase in the gel-specific conductivity by about 2 orders of magnitude as compared to gel with unmodified silica.

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Improvement of properties of silica‐filled styrene‐butadiene rubber composites through plasma surface modification of silica

Cited by 85 publications

References 21 publications

Graphene oxide modified with PMMA via ATRP as a reinforcement filler

Graphene oxide modified with PMMA via ATRP as a reinforcement filler

Morphology of the Conducting Poly-N-vinylcarbazole-coated Silica Gel Nanocomposites

Precipitated silica as filler for polymer electrolyte based on poly(acrylonitrile)/sulfolane

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