Transparent cyclic olefin copolymer/silica nanocomposites
In this work, melt blending of fumed nanosilica with cyclic olefin copolymer (COC) was carried out to prepare high strength transparent composites. The effects of various loadings (1, 2, 3 and 5 wt%) of nanosilica on the physical, mechanical, dynamic mechanical, thermal, tribological and optical pro...
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sg-ntu-dr.10356-1070512020-06-01T10:26:43Z Transparent cyclic olefin copolymer/silica nanocomposites Roy, Sunanda Das, Tanya Yue, Chee Yoon Hu, Xiao School of Materials Science & Engineering School of Mechanical and Aerospace Engineering In this work, melt blending of fumed nanosilica with cyclic olefin copolymer (COC) was carried out to prepare high strength transparent composites. The effects of various loadings (1, 2, 3 and 5 wt%) of nanosilica on the physical, mechanical, dynamic mechanical, thermal, tribological and optical properties of the COC composites were investigated in detail. The tensile test results showed that the nanocomposite with 3 wt% nanosilica content provides the highest tensile strength (55.6 MPa) compared with the nanocomposite with 5 wt% nanosilica content (54.6 MPa), which is believed to be significantly dependent on better dispersion. Moreover, the glass transition temperature (from tan δ) increased from 184 °C for pure COC to 194.3 °C for the COC composite with 3 wt% nanosilica. The scratch test and nano-indentation results showed that addition of nanosilica increased the stiffness and hardness of the composite, providing higher scratch resistance and lower frictional coefficient. UV−visible spectroscopy measurements showed that the nanocomposites have excellent optical transparency which is similar to that of the pure COC film. 2013-11-19T04:49:35Z 2019-12-06T22:23:52Z 2013-11-19T04:49:35Z 2019-12-06T22:23:52Z 2013 2013 Journal Article Roy, S., Das, T., Chee, Y. Y., & Hu, X. (2013). Transparent cyclic olefin copolymer/silica nanocomposites. Polymer International, 63(2), 327-332. https://hdl.handle.net/10356/107051 http://hdl.handle.net/10220/17779 10.1002/pi.4511 en Polymer international |
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In this work, melt blending of fumed nanosilica with cyclic olefin copolymer (COC) was carried out to prepare high strength transparent composites. The effects of various loadings (1, 2, 3 and 5 wt%) of nanosilica on the physical, mechanical, dynamic mechanical, thermal, tribological and optical properties of the COC composites were investigated in detail. The tensile test results showed that the nanocomposite with 3 wt% nanosilica content provides the highest tensile strength (55.6 MPa) compared with the nanocomposite with 5 wt% nanosilica content (54.6 MPa), which is believed to be significantly dependent on better dispersion. Moreover, the glass transition temperature (from tan δ) increased from 184 °C for pure COC to 194.3 °C for the COC composite with 3 wt% nanosilica. The scratch test and nano-indentation results showed that addition of nanosilica increased the stiffness and hardness of the composite, providing higher scratch resistance and lower frictional coefficient. UV−visible spectroscopy measurements showed that the nanocomposites have excellent optical transparency which is similar to that of the pure COC film. |
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School of Materials Science & Engineering |
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School of Materials Science & Engineering Roy, Sunanda Das, Tanya Yue, Chee Yoon Hu, Xiao |
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Roy, Sunanda Das, Tanya Yue, Chee Yoon Hu, Xiao |
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Roy, Sunanda Das, Tanya Yue, Chee Yoon Hu, Xiao Transparent cyclic olefin copolymer/silica nanocomposites |
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Roy, Sunanda |
title |
Transparent cyclic olefin copolymer/silica nanocomposites |
title_short |
Transparent cyclic olefin copolymer/silica nanocomposites |
title_full |
Transparent cyclic olefin copolymer/silica nanocomposites |
title_fullStr |
Transparent cyclic olefin copolymer/silica nanocomposites |
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Transparent cyclic olefin copolymer/silica nanocomposites |
title_sort |
transparent cyclic olefin copolymer/silica nanocomposites |
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2013 |
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https://hdl.handle.net/10356/107051 http://hdl.handle.net/10220/17779 |
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