Sorption and Diffusion of Water in Arselon
and Arselon-S Polyoxadiazole Yarns
E. N. Dresvyanina
, S. F. Grebennikov
, K. E. Perepelkin
, T. V. Smotrina
, and V. A. Ivanov
St. Petersburg State University of Technology and Design, St. Petersburg, Russia
Mari State Technical University, Ioshkar-Ola, Mari El Republic, Russia
Received July 6, 2009
Abstract—Sorption properties of Arselon and Arselon-S polyoxadiazole fibers and yarns were studied. Regular
trends in interaction of polyoxadiazoles with water vapor were revealed. The effective coefficients of internal
diffusion of water into polyoxadiazole fibers (yarns) were calculated.
AND POLYMERIC MATERIALS
ISSN 1070-4272, Russian Journal of Applied Chemistry, 2010, Vol. 83, No. 3, pp. 501–508. © Pleiades Publishing, Ltd., 2010.
Original Russian Text © E.N. Dresvyanina, S.F. Grebennikov, K.E. Perepelkin, T.V. Smotrina, V.A. Ivanov, 2010, published in Zhurnal Prikladnoi Khimii,
2010, Vol. 83, No. 3, pp. 503–509.
Polyoxadiazole (POD) fibers and yarns Arselon and
Arselon-S (photostabilized) exhibit a characteristic set
of functional properties making materials based on
them suitable for wide application fields: fabrication of
means for professional and environmental protection,
of fabrics for filtration of hot gases and other
aggressive media, of electric insulation materials, of
friction composites, etc. .
Arselon and Arselon-S fibers and yarns are
prepared from terephthalic acid (TPA) homopolymer
and hydrazine sulfate [2, 3]. The structural formula of
polyoxadiazole is as follows:
polyoxadiazole fibers and yarns of the first generation,
Oxalon (copolymer derived from terephthalic and
isophthalic acids). These data do not give a complete
pattern of the interaction of these materials with liquid
water and water vapor.
In the course of production, processing, and
service, POD fibers and fibrous materials based on
them, particularly special protection clothes, interact
with liquid water and water droplets. Sorption and
desorption of water and its vapor by textile items based
on POD fibers can occur under the action of
atmosphere, sweating, and moisture condensation in
layers of clothes with variation of the air temperature
and humidity. The structure and properties of fibers
can change under the action of liquid and gaseous
media, which can lead to changes in the physico-
mechanical and service properties of items.
In this study we examined the sorption properties of
polyoxadiazole fibers and yarns of the new generation,
Arselon and Arselon-S, in relation to the air humidity.
The characteristics of the investigation objects are
given in Table 1. For comparison we examined
samples of linen fiber widely used in production of
special protective clothes.
Equilibrium sorption and desorption of water vapor
was studied by the desiccator method. Prior to
The resistance of polyoxadiazole fibers to UV
irradiation is enhanced by introducing a photo-
stabilizer, m- or p-azobenzenedicarboxylic acid in the
form of sodium or potassium salt :
Studies of properties of new polyoxadiazole fibers
and yarns are extremely few. There are virtually no
data on the effect exerted on the properties of these
materials by their interaction with moisture and water
vapor. Only fragmentary data are available on