Effect of silane treatment of fillers in polyethylene-kaolin compositions

Gähde, J.; Müller, Verena; Lebedev, E. V.; Lipatov, Yu.S.

doi:10.1016/0032-3950(77)90275-1

Cited by 16 publications

(8 citation statements)

References 5 publications

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“…11 Another approach relies on the chemical modification of the filler surface by functional silanes and titanate esters, which are able to promote adhesion to the polymer matrix. [12][13][14][15][16][17] However, the high cost of functional silane compounds also limits their usage for mass production.…”

Section: Introductionmentioning

confidence: 99%

Polypropylene–nanosilica‐filled composites: Effects of epoxy‐resin‐grafted nanosilica on the structural, thermal, and dynamic mechanical properties

Reddy

Das

2006

J of Applied Polymer Sci

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This article reports a comparative study of polypropylene (PP) nanocomposites synthesized with nanosilica (NS) and diglycidyl ether of bisphenol A, an epoxyresin-grafted nanosilica (ENS), as nanofillers. These nanocomposites were prepared with the melt-mixing method at a constant loading level of 2.5 wt %; this loading level was much lower than that used for fillers in conventional composites. The effects of pure NS and ENS on the thermal, structural, mechanical, and dynamic mechanical properties of PP were analyzed with wide-angle X-ray diffraction, transmission electron microscopy, thermogravimetric analysis, differential scanning calorimetry, dynamic mechanical analysis, and scanning electron microscopy. The transmission electron microscopy studies showed a better dispersion of ENS in the PP matrix, that is, in the polypropylene-epoxy-resin-grafted nanosilica (PP-ENS) nanocomposite, in comparison with NS in the PP matrix, that is, in the polypropylene-nanosilica (PP-NS) nanocomposite. Also, the thermogravimetric analysis results showed a higher thermal stability for PP-ENS than PP-NS. Furthermore, the dynamic mechanical analysis studies showed an increase in the elastic modulus and glass-transition temperature for PP-ENS with respect to PP-NS.

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Section: Introductionmentioning

confidence: 99%

Polypropylene–nanosilica‐filled composites: Effects of epoxy‐resin‐grafted nanosilica on the structural, thermal, and dynamic mechanical properties

Reddy

Das

2006

J of Applied Polymer Sci

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“…It explains a technique based on encapsulation of the filler by a polymer coating. A second approach [7] was also proposed which relies upon the chemical modification of the filler surface by functional silanes and titanate esters. The titanate esters and functional silanes actually promote adhesion of the filler to the polymer matrix.…”

Section: Introductionmentioning

confidence: 99%

“…The titanate esters and functional silanes actually promote adhesion of the filler to the polymer matrix. [7][8][9][10][11][12] A worldwide total of about 16,000 tons of coupling agents worth around US$180 million is consumed annually for chemical functionalization of around 1.5 million tons of fillers. However, the high cost of functional silanes limits their production and applicability.…”

Section: Introductionmentioning

confidence: 99%

Ethylene‐Octene Copolymer‐Nanosilica Nanocomposites: Effects of Epoxy Resin Functionalized Nanosilica on Morphology, Mechanical, Dynamic Mechanical and Thermal Properties

Reddy

Patra

Das

2009

Macromolecular Symposia

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A comparative study of the structural, thermal, mechanical and thermomechanical properties of ethylene-octene copolymer 1 (mPE) 2 nanocomposites synthesized with pure nanosilica (NS) and nanosilica-functionalized with diglycidyl ether of bisphenol-A (ENS) has been reported. These nanocomposites were prepared using ''melt mixing'' method at a constant loading level of 2.5 wt. %. The effects of pure nanosilica (NS) and epoxy resin-functionalized-nanosilica (ENS) on the above mentioned properties of ethylene-octene copolymer were analyzed by wide-angle-x-ray diffractometer (WAXD), transmission electron microscope (TEM), thermo gravimetric analyzer (TGA), differential scanning calorimeter (DSC), dynamic mechanical analyzer (DMA) and scanning electron microscope (SEM). TEM studies have shown a better dispersion of nanoparticles in case of ethylene-octene copolymer-epoxy resinfunctionalized-nanosilica nanocomposite (mPE-ENS) than that of ethylene-octene copolymer-nanosilica nanocomposite (mPE-NS). The tensile tests show that organic modification of nanosilica particles brings up an appreciable increase in yield strength, ultimate tensile strength and elongation at break of the polymer. DMA studies have shown an increase in the storage modulus and glass transition temperature for mPE-ENS with respect to mPE-NS. Further, the TGA results have shown a higher thermal stability for mPE-ENS in comparison to mPE-NS.

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“…11 Another approach relies on the chemical modification of the filler surface by functional silanes and titanate esters, which are able to promote adhesion to polymers. 6,7,12,13 In addition to these two rather complex and expensive techniques, Enikolopian 14 and Howard and coworkers [15][16][17][18][19] developed polymerization-filling techniques. They involve attaching a Ziegler-Natta catalyst to the surface of an inorganic filler so that olefin can be polymerized from the filler surface; 20 -23 this allows very high filler loadings (up to 95 vol %) to be reached together with acceptable mechanical properties.…”

Section: Introductionmentioning

confidence: 99%

Physicochemical characterization of the filler–matrix interface in elastomer‐encapsulated fly ash/polyester particulate composites

Guhanathan

Devi

2005

J of Applied Polymer Sci

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An attempt was made to improve the toughness of fly ash (FA)/general-purpose unsaturated polyester resin (GPR) composites. Elastomer [styrene-butadiene rubber (SBR) or acrylic copolymer (AC)]-encapsulated fillers (FA or CaCO 3 ) were made through the coagulation of the emulsified elastomer containing the filler with constant stirring. The elastomer-encapsulated fillers were added to GPR at concentrations as high as 15 wt % to make FA/SBR or AC/GPR composites. The mechanical properties (i.e., the tensile strength, tensile modulus, tensile elongation, flexural strength, flexural modulus, impact strength, and hardness) of FA/GPR, FA/SBR/GPR, and FA/AC/GPR composites were studied. The tensile-fractured surfaces of all the composites were studied with scanning electron microscopy. The thermal stability was studied with thermogravimetric analysis. An analysis of the results indicate that this modification technique is rather easy and more economical than the chemical modification of filler surfaces with functional silane coupling agents.

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Effect of silane treatment of fillers in polyethylene-kaolin compositions

Cited by 16 publications

References 5 publications

Polypropylene–nanosilica‐filled composites: Effects of epoxy‐resin‐grafted nanosilica on the structural, thermal, and dynamic mechanical properties

Polypropylene–nanosilica‐filled composites: Effects of epoxy‐resin‐grafted nanosilica on the structural, thermal, and dynamic mechanical properties

Ethylene‐Octene Copolymer‐Nanosilica Nanocomposites: Effects of Epoxy Resin Functionalized Nanosilica on Morphology, Mechanical, Dynamic Mechanical and Thermal Properties

Physicochemical characterization of the filler–matrix interface in elastomer‐encapsulated fly ash/polyester particulate composites

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