Reny Thomas » Публикация
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Опубликовано
2013-01-23
Опубликовано на SciPeople2013-02-01 09:51:22
ЖурналColloids and Surfaces A: Physicochemical and Engineering Aspects
TiO2 nanoparticle assisted solid phase photocatalytic degradation of polythene film: A mechanistic investigation
Аннотация
The solid-phase photocatalytic degradation of low density polyethylene (LDPE) with sol-gel
synthesized TiO2 nanoparticles as photocatalyst was investigated under ultraviolet (UV)
irradiation in ambient air conditions. TiO2 nanoparticles were synthesized by optimizing
various parameters and the TiO2 nanoparticles were dispersed in LDPE using cyclohexane
solution. This TiO2-PE nanocomposite was made in the form of thin films of 40 m size by
facile solution casting method and studied photodegradation of these films. A comparative
study on the photodegradation of two different sized TiO2 incorporated LDPE under UV
radiation was carried out. Polyethylene film incorporated with TiO2 nanoparticles of size
50nm showed higher degradation rate under UV radiation. Partial oxidation was confirmed
from the IR spectrum of the TiO2 incorporated polyethylene film after radiation exposure.SEM analysis and AFM nanoindentation measurements confirms the degradation. A possible
mechanism of TiO2 assisted degradation of the polyethylene matrix has also been proposed.
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