Plasma impact on the structural and optical properties of polycarbonate-polyester blend

Abstract EN

The polycarbonate/ polyester (PC / PS) blend is one of the very distinctive blends which is distinct by its high degradation resistance and hence it is characterized by a good thermal stability.

in the research in hand, the authors used X ray diffraction and UV spectroscopic methodologies to get information concerned with the influence of plasma (1-3 min.) on the structural and optical characteristics of the blend film.

the changes of the optical band gap (Eg) and the refractive index (n) with the plasma exposure time were interpreted.

an increase in n (1.5663-1.5764) associated with a reduction of Eg (6.71-6.58 eV) was noticed when augmenting the exposure time up to 3 minutes.

these trends were assigned to the dominance of chain crosslinks.

the plasma radiation encourages the trans esterification interaction between the PC and the PS leading to a more compact structure of the copolymer.