Open AccessStudy some specifications of copolymer (PLA-PEG): دراسة بعض الخصائص لمزائج البوليميرات المشتركة من بولي لاكتيك أسيد وبولي إتيلين غليكول (PLA-PEG)
Author(s) -
Husine Ahmed Baker Gema Farzat Khlil
Publication year - 2022
Publication title -
mağallaẗ al-ʿulūm al-handasiyyaẗ wa-al-tiknūlūğiyā al-maʿlūmāt
Language(s) - English
Resource type - Journals
ISSN - 2522-3321
DOI - 10.26389/ajsrp.m020821
Subject(s) - crystallinity , materials science , electrospinning , peg ratio , ethylene glycol , glass transition , crystallization , copolymer , chemical engineering , polymer chemistry , polyester , lactic acid , differential scanning calorimetry , nanofiber , polylactic acid , composite material , polymer , thermodynamics , physics , finance , biology , bacteria , engineering , economics , genetics
This study about the blends of Poly Lactic Acid/ Poly Ethylene Glycol (PLA/PEG) 4000 copolymer at concentrations (9%,6%,3%,0%)) wt%) from (PEG) and (PLA) (5%) (w/w) by using casting solvent method to production films. The nonwoven nano fibrous mats were obtained by electro spinning of (PLA/PEG) solutions in chloroform, at weight ratios (70/30) (v/v), respectively. DSC is employed to measure the crystallinity difference between (PLA/PEG) blends and their nonwovens mats. the thermal properties (DSC) of (PLA/PEG) copolymer blends films and electrospun nano fiber mats such as (Tm) melting temperature, (Tg) glass transition temperature, (Tc) crystallization, Xc crystallinity rate and enthalpy . the FTIR test was done for all samples to figure the nature linking between (PLA) and (PEG),the results were that (6%) (w/w) of (PEG) was the optimized rate to apply Electrospinning method , data of DSC test defined that (Tg) and (Tm) were decreased, and that refer to occurrence physicist cross linking between the used substances (Completely miscible blend) when the electrospinning method was applied, also Xc for these nonwoven mats was decreased which has in turn an important effect on the speed of biodegradble for poly lactic acid (PLA).