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<strong>Effect of cooling rate, particle size and volume fraction on non-isothermal crystallization of polypropylene/silica nanocomposite</strong>

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Title Statement <strong>Effect of cooling rate, particle size and volume fraction on non-isothermal crystallization of polypropylene/silica nanocomposite</strong>
 
Added Entry - Uncontrolled Name Rizvi, Syed Javed Ahmad; Department of Petroleum Studies Faculty of Engineering and Technology Aligarh Muslim University Aligarh 202002
Sharma, Upasna ; Department of Petroleum Studies Faculty of Engineering and Technology Aligarh Muslim University Aligarh 202002
 
Uncontrolled Index Term Non-isothermal crystallization kinetics; Differential scanning calorimetry; Taguchi’s design of experiment; Signal to Noise response; Monodisperse silica-nanospheres
 
Summary, etc. Thermoplastic nanocomposites of maleic anhydride grafted polypropylene (MA-g-PP) and monodisperse silica-nanospheres of diameter 60, 100 and 250nm have been prepared by melt blending in a twin screw micro-compounder. The tensile specimens are molded and tested using digital image correlation technique. The crystallinity has been determined using differential scanning calorimetry (DSC) and wide angle X-ray diffraction. The scanning and transmission electron micrographs show proper dispersion of silica-nanospheres in the matrix. Taguchi method has been employed for the analysis of non-isothermal crystallization parameters. The crystallization parameters are calculated from DSC plots. It is found from S/N ratio analysis that the increase in nanoparticle size leads to higher crystallinity, onset and peak temperature whereas reverse effect is observed for increase in cooling rate. The effect of volume fraction is less pronounced. Further it is found that the dependence of mechanical properties on interface between matrix and reinforcement is more decisive than crystallinity of nanocomposite.
 
Publication, Distribution, Etc. Indian Journal of Chemical Technology (IJCT)
2019-09-26 16:53:34
 
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http://op.niscair.res.in/index.php/IJCT/article/view/20469
 
Data Source Entry Indian Journal of Chemical Technology (IJCT); ##issue.vol## 26, ##issue.no## 2 (2019): Indian Journal of Chemical Technololgy
 
Language Note en