POLYURETHANES CHEMICAL RECYCLING Akbar Gurbanov, Ariza Puchakhova, Yagub Hajiyev Baku Higher Oil School Baku, Azerbaijan akbar.gurbanov.std@bhos.edu.az, ariza.puckakhova.std@bhos.edu.az, yagub.hajiyev2003@gmail.com Supervisor: Amir Rza Vakhshouri Keywords : polyurethane foam, recycling, glycolysis,
Polyurethane (PU) is the plastic material that exists in a plethora of
forms. It is likely to be tailored to be either rigid or flexible [5]. They are known
to be a particular category of the thermoplastic and thermoset polymers
which is likely to exhibit elastomeric or rigid characteristics according to their
morphological and chemical constructions [5]. The properties of PU, like
chemical, mechanical, and biological properties are of utmost significance
not only to scientists but in the construction industries also. PU are utilized in
a number of applications from automotive industries, furniture applications,
or industrial maintenance because they have excellent abrasion resistance,
corrosion and chemical resistance, low temperature flexibility, and are used
in a number of applications from automobile finishing to
building insulation
[4]. PUs are likely to be employed in a variety of materials, for instance, dyes,
liquid covering, insulators, elastomers, foams, hard surfaces, etc. To cite an
example for statistical value, in Europe, polyurethane accounts for
approximately 7% of the polymer consumption; however, the worldwide
consumption of PU was responsible for 60.5 billion USD in 2017, with about
27% consumed in Europe as PU foams and other products which are
mentioned above [1].
There are 5 major recovery treatment ways for recycling PU foams which
are repair and re-use, energy recovery, microbial degradation, mechanical,
chemical and thermo-chemical recycling. Primary way widely utilized is
chemical recycling that have 6 ways (Hydrolysis, Glycolysis, Alcoholics,
Fractionation, Hydro glycolysis, Ammonolysis) [2].