Structural changes in Poly(lactic acid)-zeolite nanocomposites exposed to 60Co gamma rays
[ X ]
Tarih
2018
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Taylor & Francis Ltd
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
Poly(lactic acid) (PLA) nanocomposites containing 3%, 5% and 7% zeolite used in the present research study were prepared by solution casting. The PLA nanocomposites were structurally characterized by Scanning Electron Microscopy and Fourier-transform infrared spectroscopy. The effects of the gamma radiation at the absorbed doses of 10, 15 and 20kGy on the structures and thermal properties of the nanocomposites were investigated in a tetrahydrofuran solvent. Thermodecomposition tests and analyses were carried within 30-500 degrees C range at the rate of 10 degrees Cmin(-1) by thermogravimetric analysis (TG). The activation energies for thermal degradation of the nanocomposites were calculated from their TG data by Flynn-Wall-Ozawa method. The G values of the nanocomposites were calculated based on molecular weights which were measured by means of gel permeation chromatography before and after the gamma irradiation. The E-a and molecular weight results showed that addition of zeolite to the PLA affected the radiation resistance of the polymer.
Açıklama
Anahtar Kelimeler
Thermal degradation, gamma radiation, zeolite, Poly(lactic acid)
Kaynak
Radiation Effects and Defects in Solids
WoS Q Değeri
Q4
Scopus Q Değeri
Q3
Cilt
173
Sayı
5-6
