نوع مقاله : مقاله پژوهشی
1 عضو هیات علمی دانشکده مهندسی نساجی، دانشگاه آزاد اسلامی واحد یادگار امام (شهر ری)
2 دانشگاه ازاد اسلامی- واحد یادگار امام خمینی(ره) شهرری
3 پژوهشگاه پتروشیمی و پلیمر ایران
4 دانشگاه آزاد واحد یادگار امام خمینی- شهرری
عنوان مقاله [English]
Nanotechnology improves the mechanical properties of polymer and metal compounds in the form of nanocomposites. The presence of nanometer-sized secondary phases in polymer coatings can increase the physical and mechanical properties more than conventional reinforcements. The nanosilica particles are used as an efficient filler in polymer matrix. In this research, polypropylene/ nanosilica nanocomposite fibers were prepared to investigate their properties. For this purpose, after surface modification of nano-silica and adding polypropylene maleic as a compatibilizer to the polypropylene matrix of obtained nanocomposite fibers, they were meltspinined with different percentages of nanosilica. Investigation of rheological and viscoelastic properties showed that due to the increase of nanoparticles up to 0.5%, it had no significant effect on rheological behavior and melt spinning process. The results of TGA test showed that the onset temperature of degradation decreased with increasing percentage of nanosilica. SEM and EDAX images showed that the particle distribution in nanocomposites containing lower amounts of nanosilica was uniform and almost free of particle aggregation, but with an increase of nanosilica by 1.5%, there was particle aggregation at different points. The main objective of this research is study of Rheological properties of nanocomposite along side of morphological behaviours.