Библиографическое описание:Plasticized Films Based on PLA and PHB: from the Choice of Plasticizer to the Packaging Prospects : научное издание / Anna A. Sukhanova, Natalya L. Ertiletskaya, Kristina E. Zabolotnaya [et al.]. - Текст : непосредственный // Chimica Techno Acta. - 2026. - Т.13, №1. - P. 9315. - This study was carried out within the framework of the state assignment of the Ministry of Science and Higher Education of the Russian Federation (project No. FEFE-2024-0027). - ISSN 2409-5613. - ISSN 2411-1414, DOI 10.15826/chimtech.9315.
Аннотация:PLA- and PHB-based films were plasticized with triacetin (TA), triethyl citrate (TEC), tributyl-o-acetyl citrate (TBAC) in concentrations ranging from 1 to 10 wt.%. We found that introduction of TA and TEC affected the surface of PLA films, leading to the formation of closed pores and cavities, whereas TBAC did not noticeably affect the surface. Upon plasticization, the elongation at break of PLA films increased up to 30-fold. The introduction of plasticizers caused less than a two-fold change in the values for PHB films. The plasticized PLA and PHB films were characterized by lower melting points (around 143-144 °C and 166-167 °C, respectively) compared to the nonplasticized films (147 °C and 168 °C). Following incubation in aqueous model solutions (5% sodium chloride, 2% citric acid, 0.3% lactic acid), the plasticizers gradually migrated from the films into the environment, reaching 0.0034 mg∙mg-1. This migration led to a reduction in the films' mechanical properties: at pH 6.0, the tensile strength and elongation at break decreased by a factor of 1.3-1.5, while at pH 2.6, a fivefold decrease was observed. The shelf life of chicken fillets was extended up to one week without any obvious change in sensory characteristics. The plasticizer was detected in chicken fillets at a very low concentration (approximately 2.1 μg/g) on day 3 but was no longer detectable by day 7 of the experiment.
Издательство:Уральский федеральный университет им. первого Президента России Б.Н. Ельцина, Ekaterinburg
Источник:Chimica Techno Acta
Выпуск:Т.13, №1
Номера страниц:9315
Держатель оригинала документа:Federal Research Center “Krasnoyarsk Science Center of the Siberian Branch of the Russian Academy of Sciences”, Reshetnev Siberian State University of Science and Technology, Siberian Federal University
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