Effects of silane functionalization of alumina whiskers on high-density polyethylene composites



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Ares, Ana Isabel and Lasagabáster Latorre, Aurora and Abad López, María José and Noguerol, Rosalía and Cerecedo Fernández, Carmen and Valcárcel Juárez, Victor Andrés and Caamaño Gesto, José Manuel and Guitián Rivera, Francisco (2014) Effects of silane functionalization of alumina whiskers on high-density polyethylene composites. Journal of Composite Materials, 48 (25). pp. 3141-3151. ISSN 0021-9983

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Official URL: https://doi.org/10.1177/0021998313507615


New polyethylene matrix and alumina whiskers composites have been designed in order to combine the processability of common thermoplastics with improved physical properties. This work analyzes the influence of the composite formulation on the morphological, rheological and thermal properties of the new materials. Concerning rheological properties, a significant increase in viscosity and storage modulus is observed for high alumina whiskers content. Furthermore, the whiskers were functionalized with silane coupling agent in order to improve compatibility with the matrix. Two surface treatments were used for comparison purposes, and Fourier transform infrared spectroscopy was applied for evaluating the chemical changes on the surface of whiskers. Pre-treatment with the silane coupling agent brought about beneficial changes in morphology and rheology, related with improved dispersion of whiskers and increased filler–matrix interface. Finally, the inclusion of only 5 wt.% filler, functionalized with 100 wt.% silane, increased the thermal stability of matrix around 37%.

Item Type:Article
Additional Information:

Article first published online: October 22, 2013;Issue published: October 1, 2014

Uncontrolled Keywords:Polymer composites ; Alumina whiskers ; Rheology ; Morphology ; Fourier transform infrared
Subjects:Sciences > Chemistry > Optics
Sciences > Chemistry > Chemistry, Organic
ID Code:41314
Deposited On:17 Feb 2017 12:18
Last Modified:17 Feb 2017 12:18

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