Mechanical properties of attapulgite clay reinforced polyurethane shape-memory nanocomposites

Ben Xu; Wei Min Huang; Yu Tao Pei; Zhen Guo Chen; Arno Kraft; Robert Reuben; Jeff de Hosson; Yong Qing Fu

doi:10.1016/j.eurpolymj.2009.04.004

Mechanical properties of attapulgite clay reinforced polyurethane shape-memory nanocomposites

Ben Xu, Wei Min Huang, Yu Tao Pei, Zhen Guo Chen, Arno Kraft, Robert Reuben, Jeff de Hosson, Yong Qing Fu

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

121 Citations (Scopus)

Abstract

Nanocomposites based on attapulgite clay and shape-memory polyurethane were fabricated by mechanical mixing. The mechanical properties of samples were evaluated using a micro-indentation tester. The untreated commercial attapulgite clay resulted in a significant decrease in glass transition temperature and hardness of the nanocomposite due to the presence of moisture as well as the clay’s amorphous structure and surface hydroxyl groups. The attapulgite nanoparticles were heat-treated at 850 °C, which resulted in crystallization of the particles and formation of layered attapulgite structure. The hardness of the nanocomposites composed of the heat treated clay powder dramatically increased as a function of clay content, which is attributed to the homogeneous dispersion of the nanofillers in the polymer matrix and strong filler–polymer interactions. Shape recovery of indentations has been demonstrated upon heating.

Original language	English
Pages (from-to)	1904-1911
Journal	European Polymer Journal
Volume	45
Issue number	7
DOIs	https://doi.org/10.1016/j.eurpolymj.2009.04.004
Publication status	Published - 2009

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10.1016/j.eurpolymj.2009.04.004

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title = "Mechanical properties of attapulgite clay reinforced polyurethane shape-memory nanocomposites",

abstract = "Nanocomposites based on attapulgite clay and shape-memory polyurethane were fabricated by mechanical mixing. The mechanical properties of samples were evaluated using a micro-indentation tester. The untreated commercial attapulgite clay resulted in a significant decrease in glass transition temperature and hardness of the nanocomposite due to the presence of moisture as well as the clay{\textquoteright}s amorphous structure and surface hydroxyl groups. The attapulgite nanoparticles were heat-treated at 850 °C, which resulted in crystallization of the particles and formation of layered attapulgite structure. The hardness of the nanocomposites composed of the heat treated clay powder dramatically increased as a function of clay content, which is attributed to the homogeneous dispersion of the nanofillers in the polymer matrix and strong filler–polymer interactions. Shape recovery of indentations has been demonstrated upon heating.",

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T1 - Mechanical properties of attapulgite clay reinforced polyurethane shape-memory nanocomposites

AU - Xu, Ben

AU - Huang, Wei Min

AU - Pei, Yu Tao

AU - Chen, Zhen Guo

AU - Kraft, Arno

AU - Reuben, Robert

AU - de Hosson, Jeff

AU - Fu, Yong Qing

PY - 2009

Y1 - 2009

N2 - Nanocomposites based on attapulgite clay and shape-memory polyurethane were fabricated by mechanical mixing. The mechanical properties of samples were evaluated using a micro-indentation tester. The untreated commercial attapulgite clay resulted in a significant decrease in glass transition temperature and hardness of the nanocomposite due to the presence of moisture as well as the clay’s amorphous structure and surface hydroxyl groups. The attapulgite nanoparticles were heat-treated at 850 °C, which resulted in crystallization of the particles and formation of layered attapulgite structure. The hardness of the nanocomposites composed of the heat treated clay powder dramatically increased as a function of clay content, which is attributed to the homogeneous dispersion of the nanofillers in the polymer matrix and strong filler–polymer interactions. Shape recovery of indentations has been demonstrated upon heating.

AB - Nanocomposites based on attapulgite clay and shape-memory polyurethane were fabricated by mechanical mixing. The mechanical properties of samples were evaluated using a micro-indentation tester. The untreated commercial attapulgite clay resulted in a significant decrease in glass transition temperature and hardness of the nanocomposite due to the presence of moisture as well as the clay’s amorphous structure and surface hydroxyl groups. The attapulgite nanoparticles were heat-treated at 850 °C, which resulted in crystallization of the particles and formation of layered attapulgite structure. The hardness of the nanocomposites composed of the heat treated clay powder dramatically increased as a function of clay content, which is attributed to the homogeneous dispersion of the nanofillers in the polymer matrix and strong filler–polymer interactions. Shape recovery of indentations has been demonstrated upon heating.

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U2 - 10.1016/j.eurpolymj.2009.04.004

DO - 10.1016/j.eurpolymj.2009.04.004

M3 - Article

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VL - 45

SP - 1904

EP - 1911

JO - European Polymer Journal

JF - European Polymer Journal

IS - 7

ER -

Mechanical properties of attapulgite clay reinforced polyurethane shape-memory nanocomposites

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