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Journal of Industrial and Environmental Chemistry| Volume: 3
February 18-19, 2019 | Paris, France
Joint Event
Green Chemistry and Technology
8th World Congress on International Conference on
Organic and Inorganic Chemistry
In the last few years, much attention has been focused
on research to prepare new generation of Poly (para –
substituted styrene), and to study the irradiation, thermal
and plasticization effects on stability of these new polymers.
The photodegradation of irradiated solid films was studied by
using UV – Visible, Fluorescence, FT - IR and TLC spectroscopic
techniques. IrradiatedpureandblendedPoly (para– substituted
styrene) solid films showed a gradual increase in the absorption
intensity of the main band with the increase in the number
of blended plasticizers and increase in the irradiation time as
well as the formation of new bands at longer wavelengths. The
fluorescence spectra of irradiated polymers in solid films and
in solutions of different polarity, showed a deformation in the
fluorescence main band and the appearance of new bands
at longer wavelengths, indication the distraction of polymer
chains and the formation of new photo products through
the formation of free radical reactions. The FT – IR spectra of
irradiated pure and blended solid films, showed an increase
or decrease of the polymer vibration frequencies, as well as a
change in numerous inferred bands intensities. The increase
in the intensities of the analyzed ranges is attributed to the
formation of carbonyl, hydroxyl, and aliphatic ketones and to
the increase in the number of polyene structures that resulted
from hydrogen abstraction during photodegradation reactions.
The analysis of the Fourier-transform infrared spectra of the
irradiated and nonirradiated samples showed a noticeable
formation of a new broad band centred at (1,727 cm−1, C=O),
assigned to the growth of aliphatic ketones formerly from the
reaction of reactive alkoxy radicals. Its intensity was found to
increase with the increase in irradiation time and also with the
increase in the amount of added Terephthalate and phthalates
plasticizer, indicating an increase in the efficiency of the photo
degradation process. The analysis of fragments that resulted
from the photo irradiation samples of PSP in solution, using
electrospray ionization-ion trap (ESI). Where the separation and
determination of the fragments which resulted from degraded
polymer were studied by LC– ESI-MS in positive mode and gave
thebestspecificityandsensitivityfortheirdetection.Thepositive
ion (ESI-MS) spectra showed five main peaks of the total ion
chromatogram(TIC). All the compounds thatwere resulted from
the photodegradation of the irradiate polymer solution gave
the protonated molecules [M+ H+] after ionization in the electro
spray source. The fragmentation ions showed the formation
of monomer, dimmer and oxygenated organic compounds.
Speaker Biography
Khalid E Al Ani has completed his PhD from Southampton University, England and
Postdoctoral studies from Texas University, USA. He was a Visiting Professor at
Liverpool University at the Inorganic and Industrial Department, Liverpool, UK. He was
a Professor at Baghdad University, Department of Physical Chemistry, Iraq. He was
also a Professor of Physical Chemistry at Oran University of Science and Technology-
Algeria, Hashemite University, Jordan. He was the Dean of Faculty of Pharmacy and
currently the Head of the Pharmaceutical Sciences Department at Jadara University,
Irbed, Jordan. He has published more than 48 original articles in international journals
and attended many international conferences.
e:
Khalid E Al Ani
Jadara University, Jordan
Photochemical reactions in the irradiated poly (para- substituted styrene) in solid
films and in solutions
Khalid E Al Ani, J Ind Environ Chem 2019, Volume 3
DOI: 10.4066/2591-7331-C1-007