Univerzita Pardubice Fakulta chemicko- technologická

Univerzita Pardubice

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Publikace detail

Bezstyrenové nenasycené polyesterové pryskyřice z odpadního PET

Autoři: Rubeš David | Honzíček Jan | Vinklárek Jaromír

Rok: 2023

Druh publikace: ostatní - přednáška nebo poster

Strana od-do: nestránkováno

Tituly:

Jazyk	Název	Abstrakt	Klíčová slova
cze	Bezstyrenové nenasycené polyesterové pryskyřice z odpadního PET	In this study a waste polyethylene terephthalate (PET) was used as a feedstock in a synthesis of unsaturated polyester resins. The PET was glycolyzed by diethylene glycol (DEG) in various ratios. These glycolysates were then used with itaconic acid to synthesize an unsaturated polyester with acid value under 50 mg KOH/g, which correlates to number molar weights above 2000 g/mol. Various reactive diluents (RD) like methyl methacrylate, dimethyl itaconate (DMI), dibutyl itaconate and butyl methacrylate were used to obtain a wide range of properties. Styrene analogues were prepared too, in order to compare them with commercial styrenic resins. Viscosity of uncured resins was in an approximate range of 190–3000 mPa.s. Cross-linking of resins was done by redox initiation system. Mechanical properties were tested. The largest ultimate tensile (85,4 MPa) and flexural (161,4 MPa) strength was achieved in system with 40 wt% DMI as RD. The yield strength (131,3 MPa) in compression was also the highest for DMI. This process of preparing resins is a promising way to recycle PET waste, as the obtained materials have very good mechanical properties while they use environment-friendly reactive diluents.