Title :
Changes in physical properties and molecular structure of polystyrene nanospheres exposed with daily solar flux
Author :
Wibawa, Pratama Jujur ; Agam, Mohd Arif ; Nur, Hadi ; Saim, Hashim
Abstract :
The effects of physical properties and molecular structure of 200 nm polystyrene nanospheres (PSN) coated on silicon wafer exposed with daily solar flux were explored by field emission scanning electron microscope (FE-SEM) and attenuated total reflectance-Fourier transform infrared (ATR-FT-IR) spectrometer. It is revealed that the particles shape of PSN changed from spheric to eight-shaped after solar radiation. Reduction of the size as much as 29.5% after 5 minutes exposure was also observed in PSN particles. Changes in the molecular structure of the PSN particles after solar radiation were observed where some of the phenyl moieties of polystyrene broke down to facilitate carbon-carbon cross linkage bonds. These results demonstrated that the shrinkage of PSN particles is caused by the change of the molecular structure of polystyrene.
Keywords :
Fourier transform spectra; attenuated total reflection; field emission electron microscopy; infrared spectra; nanoparticles; particle size; polymers; scanning electron microscopy; shrinkage; solar radiation; Si; attenuated total reflectance-Fourier transform infrared spectrometer; carbon-carbon cross linkage bonds; daily solar flux; eight-shaped particles; field emission scanning electron microscope; molecular structure; phenyl moieties; physical properties; polystyrene nanospheres; shrinkage; silicon wafer; size 200 nm; spheric shape particles; time 5 min;
Conference_Titel :
Enabling Science and Nanotechnology (ESciNano), 2010 International Conference on
Conference_Location :
Kuala Lumpur
Print_ISBN :
978-1-4244-8853-7
DOI :
10.1109/ESCINANO.2010.5701028
