New Biodegradable Absorbents Based on Polylactide, Poly(3-hydroxybutyrate), and Chitosan for Sorption of Iron and Chromium Ions

Роговина, С. З.; Zhorina, L. A.; Iordanskii, A. L.; Прут, Э. В.; Yakhina, Anastasia; Грачев, А. В.; Shapagin, A. V.; Kuznetsova, O. P.; Берлин, А. А.

doi:10.1134/s0965545x21060109

Cited by 5 publications

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“…The analogous trend was observed in our previous work [ 30 ]. It is well known that the process of sorption from aqueous medium is accompanied by transport phenomena that under determined conditions could influence the rate of contaminant recovery [ 41 , 42 ].…”

Section: Resultssupporting

confidence: 91%

“…This is explained by PLA hydrolysis proceeding readily above its glass transition temperature (55–62 °C) [ 27 ]. Previously, in [ 28 , 29 ], we studied the features of hydrolysis and ozonolysis of PLA, PHB, and ternary compositions based on PLA, PHB, and chitosan, as well as their sorption properties with respect to metal ions [ 30 ]. The elaborated PLA–PHB binary compositions were successfully used for oil sorption from aqueous media [ 31 ].…”

Section: Introductionmentioning

confidence: 99%

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Hydrolysis, Biodegradation and Ion Sorption in Binary Biocomposites of Chitosan with Polyesters: Polylactide and Poly(3-Hydroxybutyrate)

et al. 2023

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The film binary composites polylactide (PLA)–chitosan and poly(3-hydroxybutyrate) (PHB)–chitosan have been fabricated and their functional characteristics, such as hydrolysis resistance, biodegradation in soil, and ion sorption behavior have been explored. It was established that hydrolysis temperature and acidity of solutions are differently affected by the weight loss of these two systems. Thus, in the HCl aqueous solutions, the stability of the PHB-chitosan composites is higher than the stability of the PLA-chitosan one, while the opposite situation was observed for biodegradation in soil. The sorption capacity of both composites to Fe3+ ions was investigated and it was shown that, for PHB-chitosan composites, the sorption is higher than for PLA-chitosan. It was established that kinetics of sorption obeys the pseudo-first-order equation and limiting values of sorption correspond to Henry’s Law formalism. By scanning electron microscopy (SEM), the comparative investigation of initial films and films containing sorbed ions was made and the change of films surface after Fe3+ sorption is demonstrated. The findings presented could open a new horizon in the implementation of novel functional biodegradable composites.

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Section: Resultssupporting

confidence: 91%