Russian Journal of Applied Chemistry, 2010, Vol. 83, No. 1, pp. 97−101.
Pleiades Publishing, Ltd., 2010.
Original Russian Text
S.R. Garaeva, Ahmet Alper Aydin, Adnan Aydin, Bahattin Yalçin, P.A. Fatullaeva, A.A. Medzhidov, 2010, published in Zhurnal Prikladnoi
Khimii, 2010, Vol. 83, No. 1, pp. 99−104.
AND INDUSTRIAL ORGANIC CHEMISTRY
Composition, Properties, and Application of Products
Formed in Oxidation of Polyethylene by Nitric Acid
S. R. Garaeva
, Ahmet Alper Aydin
, Adnan Aydin
, P. A. Fatullaeva
, and A. A. Medzhidov
Institute of Chemical Problems, National Academy of Sciences of Azerbaijan, Baku, Azerbaijan
Department of Chemical Engineering, Istanbul Technical University, Istanbul, Turkey
Chemical Department, Faculty of Science and Letters, Marmara University, Göztepe, Istanbul, Turkey
Received March 12, 2009
Abstract—Structure of products formed in polyethylene oxidation by nitric acid was studied by NMR, IR, and
electronic absorption spectroscopies and derivatography.
Polyethylene is one of the most widely used polymers
in industry and everyday life, and, because of its
stability against oxidation (thermal- and photo-oxidative
destruction), is accumulated as household and industrial
waste. Therefore, utilization of waste polyethylene still
remains a topical task.
One of methods used to process secondary polyethylene
is its destructive oxidation with various reagents and, in
particular, with nitric acid. Previously, studies have
been carried out of the oxidation of polyethylene with
concentrated [1, 2] and dilute nitric acid [3–5]. The
structure of the products formed has been analyzed by
IR spectroscopy and the presence of carboxy and nitro
groups has been demonstrated [1, 2].
The goal of this study was to examine the structure
and properties of products formed in polyethylene
oxidation with nitric acid (nitration products, NP) and to
demonstrate their capacity for complexation with metal
ions and possibility of their use as microfertilizers for
supplementary feeding of plants.
IR spectra were measured on a Specord M-80
spectrophotometer (Carl Zeiss, Jena) in a thin layer,
KBr pellets, and Vaseline oil. Electronic absorption
spectra were recorded on M-40 and Shimadzu UV VIS
240 spectrophotometers, and
C NMR spectra,
on Bruker XWIN (400 MHz) and Bruker (300 MHz)
radio spectrometers, with CDCl
used as a solvent.
Thermograms were measured on an MOM derivatograph
The molecular masses of the polyethylene oxidation
products were measured by means of gel-permeation
chromatography on an Agilent 1100 instrument equip-
ped with a differential refractometer at a ﬂ ow rate of 0.3
, with tetrahydrofuran as a solvent. The instrument
was calibrated against polystyrene as a standard.
Secondary polyethylene in the form of a ﬁ lm and
high-pressure polyethylene were used for oxidation. We
have not found noticeable difference in the product when
using both the raw materials.
A 1 : 2.5 (by mass) mixture of a shredded polyethylene
ﬁ lm and 56% aqueous nitric acid was placed in a ﬂ at-
bottomed flask with a reflux condenser and a gas-
discharge tube. The mixture was heated to boiling and
then was vigorously agitated at this temperature for 6 h.
After the reaction was complete, a green-yellow oily layer
was formed on the solution surface. The aqueous layer
was separated in the hot state, and the organic layer was