Nanoindentation behaviour of layered silicate reinforced
unsaturated polyester nanocomposites

Hom Dhakal; Zhongyi Zhang; Mel Richardson

doi:10.1016/j.polymertesting.2006.03.017

Nanoindentation behaviour of layered silicate reinforced unsaturated polyester nanocomposites

Hom Dhakal, Zhongyi Zhang, Mel Richardson

Research output: Contribution to journal › Article › peer-review

Abstract

The effect of various loading levels of nanoclay reinforcement on the nanomechanical properties of layered silicate nanoclay reinforced unsaturated polyester (UPE) nanocomposites were investigated by a nano-indentation test method. The clay was dispersed into a UPE matrix via blending using a mechanical stirrer. Structural studies were carried out using a wide angle X-ray diffraction (WAXD) method and correlated with the nanoindentation results. This shows that nanoindentation behaviour is strongly influenced by clay reinforcement and the degree of clay dispersion in the polymer matrix. The experimental results show that there is a strong correlation between nanomechanical properties and inter layer d-spacing of clay particles in the nanocomposite system. Incorporation of 1%, 3% and 5% by weight nanoclay into the polyester resin results in an improvement in hardness of 29%, 24% and 14%, respectively. The elastic modulus increased from 5393MPa for unreinforced polyester to 6646MPa (23% increase) with the introduction of 5% by weight nanoclay.

Original language	English
Pages (from-to)	846-852
Number of pages	7
Journal	Polymer Testing
Volume	25
Issue number	6
DOIs	https://doi.org/10.1016/j.polymertesting.2006.03.017
Publication status	Published - 18 Jul 2006

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title = "Nanoindentation behaviour of layered silicate reinforced unsaturated polyester nanocomposites",

abstract = "The effect of various loading levels of nanoclay reinforcement on the nanomechanical properties of layered silicate nanoclay reinforced unsaturated polyester (UPE) nanocomposites were investigated by a nano-indentation test method. The clay was dispersed into a UPE matrix via blending using a mechanical stirrer. Structural studies were carried out using a wide angle X-ray diffraction (WAXD) method and correlated with the nanoindentation results. This shows that nanoindentation behaviour is strongly influenced by clay reinforcement and the degree of clay dispersion in the polymer matrix. The experimental results show that there is a strong correlation between nanomechanical properties and inter layer d-spacing of clay particles in the nanocomposite system. Incorporation of 1%, 3% and 5% by weight nanoclay into the polyester resin results in an improvement in hardness of 29%, 24% and 14%, respectively. The elastic modulus increased from 5393MPa for unreinforced polyester to 6646MPa (23% increase) with the introduction of 5% by weight nanoclay.",

author = "Hom Dhakal and Zhongyi Zhang and Mel Richardson",

year = "2006",

month = jul,

day = "18",

doi = "10.1016/j.polymertesting.2006.03.017",

language = "English",

volume = "25",

pages = "846--852",

journal = "Polymer Testing",

issn = "0142-9418",

publisher = "Elsevier Limited",

number = "6",

}

TY - JOUR

T1 - Nanoindentation behaviour of layered silicate reinforced unsaturated polyester nanocomposites

AU - Dhakal, Hom

AU - Zhang, Zhongyi

AU - Richardson, Mel

PY - 2006/7/18

Y1 - 2006/7/18

N2 - The effect of various loading levels of nanoclay reinforcement on the nanomechanical properties of layered silicate nanoclay reinforced unsaturated polyester (UPE) nanocomposites were investigated by a nano-indentation test method. The clay was dispersed into a UPE matrix via blending using a mechanical stirrer. Structural studies were carried out using a wide angle X-ray diffraction (WAXD) method and correlated with the nanoindentation results. This shows that nanoindentation behaviour is strongly influenced by clay reinforcement and the degree of clay dispersion in the polymer matrix. The experimental results show that there is a strong correlation between nanomechanical properties and inter layer d-spacing of clay particles in the nanocomposite system. Incorporation of 1%, 3% and 5% by weight nanoclay into the polyester resin results in an improvement in hardness of 29%, 24% and 14%, respectively. The elastic modulus increased from 5393MPa for unreinforced polyester to 6646MPa (23% increase) with the introduction of 5% by weight nanoclay.

AB - The effect of various loading levels of nanoclay reinforcement on the nanomechanical properties of layered silicate nanoclay reinforced unsaturated polyester (UPE) nanocomposites were investigated by a nano-indentation test method. The clay was dispersed into a UPE matrix via blending using a mechanical stirrer. Structural studies were carried out using a wide angle X-ray diffraction (WAXD) method and correlated with the nanoindentation results. This shows that nanoindentation behaviour is strongly influenced by clay reinforcement and the degree of clay dispersion in the polymer matrix. The experimental results show that there is a strong correlation between nanomechanical properties and inter layer d-spacing of clay particles in the nanocomposite system. Incorporation of 1%, 3% and 5% by weight nanoclay into the polyester resin results in an improvement in hardness of 29%, 24% and 14%, respectively. The elastic modulus increased from 5393MPa for unreinforced polyester to 6646MPa (23% increase) with the introduction of 5% by weight nanoclay.

U2 - 10.1016/j.polymertesting.2006.03.017

DO - 10.1016/j.polymertesting.2006.03.017

M3 - Article

SN - 0142-9418

VL - 25

SP - 846

EP - 852

JO - Polymer Testing

JF - Polymer Testing

IS - 6

ER -

Nanoindentation behaviour of layered silicate reinforced unsaturated polyester nanocomposites

Abstract

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