Tezislər / Theses

 
 
POLYURETHANES CHEMICAL RECYCLING 
Akbar Gurbanov, Ariza Puchakhova, Yagub Hajiyev 
Baku Higher Oil School 
Baku, Azerbaijan 
[e-mail], [e-mail], 
[e-mail] 
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].

---