Thermal properties of new composites based on nanoclay, polyethylene and polypropylene

被引：0
作者：
Ewa Olewnik
Krzysztof Garman
Wojciech Czerwiński
机构：
[1] Nicolaus Copernicus University,Faculty of Chemistry, Chair of Physical Chemistry and Physicochemistry of Polymers
来源：
Journal of Thermal Analysis and Calorimetry | 2010年 / 101卷
关键词：
Thermal degradation; Nanocomposites; Nanofillers; Montmorillonite; Polyolefins;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
The results presented by a number of researchers indicate that the introduction of montmorillonite into polymer matrix results in an increase of thermal stability of polymer nanocomposites. The main purpose of this study was to evaluate the effect of the organoclay on the thermal degradation of polyolefins (polyethylene and polypropylene). Polyolefin-clay nanocomposites were prepared by melt compounding of polyolefins and montmorillonite clay organically modified with 4,4′-methylenebisaniline (MBA) (from 1.5 to 5 wt%). Changes in the surface of montmorillonite and the dispersion of organoclay in the polymer matrix were evaluated using X-ray diffraction (XRD) and elemental analysis. The thermal stability of the clay and nanocomposites were analysed by differential scanning calorimetry (DSC) and thermogravimetric analysis (TG). The XRD results show that almost complete exfoliation of the silicate layers took place and nanocomposite structure was obtained for all new materials. The thermal stability of the PE and PP/clay nanocomposites can be improved in the case of loading above 5 wt%.
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页码：323 / 329
页数：6
相关论文
共 59 条
[1]  
Xi Y(2007)Modification of the surfaces of Wyoming montmorillonite by the cationic surfactants alkyl trimethyl, dialkyl dimethyl, and trialkyl methyl ammonium bromides J Colloid Interface Sci 305 150-158
[2]  
Frost RL(2004)Adsorption of the quaternary ammonium salts on montmorillonite J Phys Chem Solids 65 441-445
[3]  
He H(2006)Preparation and performance of synthetic organoclays Appl Clay Sci 33 13-20
[4]  
Kozak M(2005)Tensile properties of polyethylene-layered silicate nanocomposites Polymer 46 1653-1660
[5]  
Domka L(2005)How organo-montmorillonite truly affects the structure and properties of polypropylene Polym Test 24 94-100
[6]  
Roelofs JCAA(2005)Thermal stability of nanocomposites based on polypropylene and bentonite Polym Degrad Stab 89 383-392
[7]  
Berben PH(1999)Preparation and characterization of hybrid organic-inorganic composite materials using the amphoteric property of amino acids: amino acid intercalated layered double hydroxide and montmoryllonite Inorg Chem 38 4653-4658
[8]  
Osman MA(2002)Influence of clay exfoliation on the physical properties of montmorillonite/polyethylene Polymer 43 5483-5491
[9]  
Rupp JEP(2004)Thermal degradation behaviour of PE/clay nanocomposites Polym Degrad Stab 85 657-665
[10]  
Suter UW(2007)Intercalated linear low density polyethylene (LLDPE)/clay nanocomposites prepared with oxidized polyethyleneas a new type compatibilizer: structural, mechanical and barrier properties Eur Polym J 43 3737-3749
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