Analysis of free volumes and light transmission in hydrogel and silicone-hydrogel polymer contact lenses

• Autorzy: Kocela A. , Miedzinski R. , Filipecka K. , Filipecki J.

Identyfikatory

DOI

10.5277/oa160103

• Języki publikacji: EN

Abstrakty

EN

The free volume holes and light transmission of hydrogel and silicone-hydrogel polymer contact lenses were investigated. As the material, the Proclear family (omafilcon A) of hydrogel contact lenses and the Biofinity family (comfilcon A) of silicone-hydrogel contact lenses were used. Positron annihilation lifetime spectroscopy was used to characterize geometrical sizes and fractions of the free volume holes in the investigated samples. There was a clear difference in the size of free volume holes and the fractional free volume between silicone-hydrogel and hydrogel polymer contact lenses. These changes are shown by a thorough analysis of the long-lived component of lifetime of ortho-positronium. At the same time, UV-vis-NIR in the spectral range 200-1000 nm studies were performed on the same samples of contact lenses spectrometry.

Słowa kluczowe

EN

positron annihilation; UV-vis-NIR; polymers; contact lenses; free volume

• Wydawca: Oficyna Wydawnicza Politechniki Wrocławskiej
• Czasopismo: Optica Applicata
• Rocznik: 2016
• Tom: Vol. 46, nr 1
• Strony: 35--45
• Opis fizyczny: Bibliogr. 32 poz., rys.

Twórcy

autor

Kocela A.

• Jan Długosz University in Częstochowa, Faculty of Mathematics and Natural Science, Institute of Physics, Armii Krajowej 13/15, 42-200 Częstochowa, Poland

autor

Miedzinski R.

• Jan Długosz University in Częstochowa, Faculty of Mathematics and Natural Science, Institute of Physics, Armii Krajowej 13/15, 42-200 Częstochowa, Poland

autor

Filipecka K.

• Jan Długosz University in Częstochowa, Faculty of Mathematics and Natural Science, Institute of Physics, Armii Krajowej 13/15, 42-200 Częstochowa, Poland
• Institute of Physics, Faculty of Production Engineering and Materials Technology, Częstochowa University of Technology, Armii Krajowej 19, 42-200 Częstochowa, Poland

autor

Filipecki J.

• Jan Długosz University in Częstochowa, Faculty of Mathematics and Natural Science, Institute of Physics, Armii Krajowej 13/15, 42-200 Częstochowa, Poland

Bibliografia

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Uwagi

PL

Opracowanie ze środków MNiSW w ramach umowy 812/P-DUN/2016 na działalność upowszechniającą naukę.