Wpływ modyfikacji rezolowej żywicy fenolowo-formaldehydowej produktami chemicznej degradacji poli(tereftalanu etylenu) na jej właściwości

A. Żmihorska-Gotfryd

Published : 2022-09-01

Vol. 49 No. 6 (2004)

Effect of resol phenol-formaldehyde resin modification with the products of poly(ethylene terephthalate) chemical degradation on the properties of the resin

A. Żmihorska-Gotfryd

Abstract

There were synthesized the resol phenol-formaldehyde resins (PF) modified with various amounts (up to 20 wt. %) of the products of poly(ethylene terephthalate) [PET(N)] chemical degradation (glycolysis). NaOH or NH4OH solutions were used as reaction catalysts. Some physico-chemical properties of modified PF resins were determined (Table 1 and 2) and their structures have been confirmed using GPC method and IR spectroscopy (Figs. 1-5, Table 3). The resins contained very low amounts of free formaldehyde (ca. 0.2 %) and phenol (1.76-3.75 %) whereas dry mass content was in the range 66-80 %. Modified resins showed very good thermal stability (Table 4) and the varnish coatings made of them showed good adhesion to metal surface as well as elasticity and impact strength (Table 5 and 6). Application of PET degradation products to PF resins modification creates the possibility of PET wastes utilization and enables to obtain a new kind of resins showing good functional properties.

Keywords

rezol fenolowo-formaldehydowy ; degradacja chemiczna PET ; degradacja PET ; modyfikacja ; zawartość wolnego formaldehydu ; zawartość wolnego fenolu ; stabilność termiczna ; powłoki ochronne resol phenol-formaldehyde resin ; PET chemical degradation ; modification ; free formaldehyde or phenol content ; thermal stability ; protective coatings

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Żmihorska-Gotfryd, A. (2022). Effect of resol phenol-formaldehyde resin modification with the products of poly(ethylene terephthalate) chemical degradation on the properties of the resin. Polimery, 49(6), 408–413. Retrieved from https://ichp.vot.pl/index.php/p/article/view/1767

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