biostudies-literatureValente BFAFundação para a Ciência e TecnologiaPortugal 2020 through European Regional Development Fund (ERDF)3451https://www.ebi.ac.uk/biostudies/studies/S-EPMC9459967biostudies-literatureUnknown14(17)Green composites made of bioplastics reinforced with natural fibers have gained considerable attention over recent years. However, the use of natural fibers in composites usually compromise some key properties, such as the impact strength and the processability of the final materials. In the present study, two distinct additives, namely an epoxidized linseed oil (ELO) and a sugar-based surfactant, viz. GlucoPure^® Sense (GPS), were tested in composite formulations of poly(lactic acid) (PLA) or poly(hydroxybutyrate) (PHB) reinforced with micronized pulp fibers. Both additives showed a plasticizing effect, which led to a decrease in the Young's and flexural moduli and strengths. At the same time, the elongation and flexural strain at break were considerably improved on some formulaPolymersImproving the Processability and Performance of Micronized Fiber-Reinforced Green Composites through the Use of Biobased Additives.PMC9459967UIDB/50011/2020, UIDP/50011/2020 & LA/P/0006/2020CEECIND/00263/2018 and 2021.01571.CEECINDProject N.º 21874 (POCI-01-0247-FEDER-021874)CEECIND/00464/2017Valente BFAVilela CSilvestre AJDNeto CPFreire CSRfalseImproving the Processability and Performance of Micronized Fiber-Reinforced Green Composites through the Use of Biobased Additives.Green composites made of bioplastics reinforced with natural fibers have gained considerable attention over recent years. However, the use of natural fibers in composites usually compromise some key properties, such as the impact strength and the processability of the final materials. In the present study, two distinct additives, namely an epoxidized linseed oil (ELO) and a sugar-based surfactant, viz. GlucoPure^® Sense (GPS), were tested in composite formulations of poly(lactic acid) (PLA) or poly(hydroxybutyrate) (PHB) reinforced with micronized pulp fibers. Both additives showed a plasticizing effect, which led to a decrease in the Young's and flexural moduli and strengths. At the same time, the elongation and flexural strain at break were considerably improved on some formula2022-01-01T00:00:00Z2022 Aug2025-04-19T07:09:39.387Z2025-04-19T07:09:39.387ZS-EPMC94599673608052610.3390/polym14173451