Stable water-borne crosslinked silylated poly (urethane-urea) (CSPU)/clay nanocomposites, reinforced with various amounts of the organically modified clay, were prepared by a polyaddition reaction of toluene diisocyanate (TDI) or isophorone diisocyanate (IPDI), polytetramethylene glycol and dimethylol propionic acid. This was followed by end-capping the free NCO groups of the PU prepolymer with phenylamino propyl trimethoxysilane and self-crosslinking. The particle size, viscosity and storage stability of these nanocomposites were measured. The particle size and viscosity of the IPDI-based nanocomposites were higher than the TDI-based ones. Intercalation of the silicate layer in the CSPU matrix were conformed by X-ray diffraction pattern and transmission electron microscopy studies. The mechanical properties of the SPU/clay nanocomposites were tested by tensile, dynamic mechanical, and nano-indentation measuring techniques and the respective properties were found to be enhanced by the reinforcing effect of organophilic clay. Modulus and hardness increased with an increase in the clay content in the CSPU matrix. Thermal stability, water and xylene resistance of the nanocomposites increased, as compared to pure CSPU and these properties increased with an increase in clay content. The mechanical properties, water and xylene resistance of the TDI-based nanocomposites were higher compared to the IPDI-based nanocomposites. A marginal reduction in transparency was observed with the addition of clay. Storage stability results confirmed that the prepared nanocomposite dispersions were stable. (c) 2006 Elsevier Ltd. All rights reserved.
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CAS, Inst Macromol Chem, Heyrovskeho Nam 2, Prague 16206 6, Czech Republic
Inst Sci & Technol Res San Luis Potosi IPICYT, San Luis Potosi, San Luis Potosi, MexicoCAS, Inst Macromol Chem, Heyrovskeho Nam 2, Prague 16206 6, Czech Republic
机构:
Key Laboratory of Eco-Chemical Engineering, Ministry of Education, College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Qingdao 266042, ChinaKey Laboratory of Eco-Chemical Engineering, Ministry of Education, College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Qingdao 266042, China
Li, Zai-Feng
Sun, Jian
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Key Laboratory of Eco-Chemical Engineering, Ministry of Education, College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Qingdao 266042, ChinaKey Laboratory of Eco-Chemical Engineering, Ministry of Education, College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Qingdao 266042, China
Sun, Jian
Wang, Sheng-Jun
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Key Laboratory of Eco-Chemical Engineering, Ministry of Education, College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Qingdao 266042, ChinaKey Laboratory of Eco-Chemical Engineering, Ministry of Education, College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Qingdao 266042, China
Wang, Sheng-Jun
Li, Jin-Yan
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Key Laboratory of Eco-Chemical Engineering, Ministry of Education, College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Qingdao 266042, ChinaKey Laboratory of Eco-Chemical Engineering, Ministry of Education, College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Qingdao 266042, China
Li, Jin-Yan
Hao, Jun-Song
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Key Laboratory of Eco-Chemical Engineering, Ministry of Education, College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Qingdao 266042, ChinaKey Laboratory of Eco-Chemical Engineering, Ministry of Education, College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Qingdao 266042, China
Hao, Jun-Song
Du, Juan
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Key Laboratory of Eco-Chemical Engineering, Ministry of Education, College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Qingdao 266042, ChinaKey Laboratory of Eco-Chemical Engineering, Ministry of Education, College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Qingdao 266042, China
机构:
North Univ China, Sch Energy & Power Engn, Taiyuan 030051, Peoples R ChinaNorth Univ China, Sch Energy & Power Engn, Taiyuan 030051, Peoples R China
Fan, Xiangqian
Zhai, Xianming
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Shanxi Acad Bldg Sci Grp Co Ltd, Taiyuan, Peoples R ChinaNorth Univ China, Sch Energy & Power Engn, Taiyuan 030051, Peoples R China
Zhai, Xianming
Liu, Lei
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North Univ China, Sch Energy & Power Engn, Taiyuan 030051, Peoples R ChinaNorth Univ China, Sch Energy & Power Engn, Taiyuan 030051, Peoples R China
Liu, Lei
Zhang, Jing
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North Univ China, Sch Energy & Power Engn, Taiyuan 030051, Peoples R ChinaNorth Univ China, Sch Energy & Power Engn, Taiyuan 030051, Peoples R China
Zhang, Jing
Li, Lin
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North Univ China, Sch Energy & Power Engn, Taiyuan 030051, Peoples R ChinaNorth Univ China, Sch Energy & Power Engn, Taiyuan 030051, Peoples R China
Li, Lin
Wang, Jiarong
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North Univ China, Sch Energy & Power Engn, Taiyuan 030051, Peoples R ChinaNorth Univ China, Sch Energy & Power Engn, Taiyuan 030051, Peoples R China
机构:Gujarat Narmada Valley Fertilizers Co Ltd, Dist Bharuch 392015, Gujarat, India
Patel, KB
Desai, KR
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Gujarat Narmada Valley Fertilizers Co Ltd, Dist Bharuch 392015, Gujarat, IndiaGujarat Narmada Valley Fertilizers Co Ltd, Dist Bharuch 392015, Gujarat, India
Desai, KR
Patel, HS
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机构:Gujarat Narmada Valley Fertilizers Co Ltd, Dist Bharuch 392015, Gujarat, India