بررسي تغييرات بلورينگي الياف پلي استر عمل آوري شده با آمين به روشهاي پراش پرتو ايكس و طيف سنجي زيرقرمز تبديل فوريه

Investigation on Crystallinity Changes of Amine - treated Polyester Fibers Using XRD and FTIR

There are different chemicals that can be used to modify the properties of polyester (PET) fibers. Among these chemicals amines are also employed to study the structure of PET fibers. In this research the structure of methylamine-treated of partially oriented (POY) and fully oriented (FOY) PET filaments was investigated using X-ray diffraction and infrared spectroscopy. X-ray diffraction patterns show the differences in crystallinity and crystallite orientation of treated polyester filaments very well. In short aminolysis duration times, the reaction takes place in amorphous regions and crystallinity increases to a small extent, but as aminolysis duration time increases so does the crystallinity with a higher rate. Generally, it can be concluded that aminolysis treatment increases the crystallinity index, crystalline order index and longer treatment times leading to a higher crystallite size of PET filaments.