Sifat transmisi, pekali pupusan dan keterpantulan optik kepingan poli(metil metakrilat) (PMMA) didop dengan metil merah dan ferum (III) asetilasetonat

• Main Authors: Mat Yunus, Wan Mahmood, Abd. Moksin, Mohd Maarof, Wan Yunus, Wan Md. Zin, Abdul Wahab, Noraini, Umam, Azizah
• Format: Article
• Language: English
• Published: Universiti Putra Malaysia Press 1999
• Online Access: http://psasir.upm.edu.my/id/eprint/3493/1/Sifat_Transmisi%2C_Pekali_Pupusan_dan_Keterpantulan_Optik.pdf; http://psasir.upm.edu.my/id/eprint/3493/
• Institution: Universiti Putra Malaysia

The optical transmission, reflection and extinction coefficient of a PMMA doped with methylene-red (PMMA-MM) and ferum (III) acetylacetonate (PMMA-FM) are presented. A rapid change of the optical transmission was observed in the range of wavelength (420-650 nm) and (500 - 600nm) for PMMA-FM and PMMAMM respectively. Eventhough the decrease of the optical transmission and the increase of the extinction coefficient do not linearly relate with increasing concentration of methylene-red and ferum (III) asetilasetonate, the transmission curve and the cut off transmission are still affected by doping concentration. It was found that the cut off value for PMMA-MM shifted from 200nm (for pure PMMA) to 550 nm when the concentration was increased to 6.3 31O-3mmol/g. A similar shift (200nm to 500nm) was also observed for PMMA-FM but with a higher doping concentration (i.e 30.7310-3 mmol/g).