PMID- 37514525 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20230801 IS - 2073-4360 (Electronic) IS - 2073-4360 (Linking) VI - 15 IP - 14 DP - 2023 Jul 24 TI - Methodologies to Evaluate the Micromechanics Flexural Strength Properties of Natural-Fiber-Reinforced Composites: The Case of Abaca-Fiber-Reinforced Bio Polyethylene Composites. LID - 10.3390/polym15143137 [doi] LID - 3137 AB - There is growing emphasis on developing green composites as a substitute for oil-based materials. In the pursuit of studying and enhancing the mechanical properties of these composites, tensile tests are predominantly employed, often overlooking the flexural properties. This study focuses on researching the flexural properties of abaca-fiber-reinforced bio-based high-density polyethylene (BioPE) composites. Specifically, composites containing 30 wt% of abaca fiber (AF) were treated with a coupling agent based on polyethylene functionalized with maleic acid (MAPE). The test results indicate that incorporating 8 wt% of the coupling agent significantly improved the flexural strength of the composites. Thereafter, composites with AF content ranging from 20 to 50 wt% were produced and subjected to flexural testing. It was observed that flexural strength was positively correlated with AF content. A micromechanics analysis was conducted to evaluate the contributions of the phases. This analysis involved assessing the mechanical properties of both the reinforcement and matrix to facilitate the modeling of flexural strength. The findings of this study demonstrate the feasibility of replacing oil-based matrices, such as high-density polyethylene (HDPE), with fully bio-based composites that exhibit comparable flexural properties to their oil-based counterparts. FAU - Seculi, Faust AU - Seculi F AD - LEPAMAP-PRODIS Research Group, University of Girona, 17003 Girona, Spain. FAU - Julian, Fernando AU - Julian F AUID- ORCID: 0000-0003-3230-0588 AD - LEPAMAP-PRODIS Research Group, University of Girona, 17003 Girona, Spain. FAU - Llorens, Joan AU - Llorens J AUID- ORCID: 0000-0003-3766-898X AD - CATS Research Group, Department of Architecture and Construction Engineering, University of Girona, Avda M feminine Aurelia Capmany 61, 17071 Girona, Spain. FAU - Espinach, Francisco X AU - Espinach FX AUID- ORCID: 0000-0002-6635-0260 AD - LEPAMAP-PRODIS Research Group, University of Girona, 17003 Girona, Spain. FAU - Mutje, Pere AU - Mutje P AD - LEPAMAP-PRODIS Research Group, University of Girona, 17003 Girona, Spain. FAU - Tarres, Quim AU - Tarres Q AUID- ORCID: 0000-0002-7021-2055 AD - LEPAMAP-PRODIS Research Group, University of Girona, 17003 Girona, Spain. LA - eng PT - Journal Article DEP - 20230724 PL - Switzerland TA - Polymers (Basel) JT - Polymers JID - 101545357 PMC - PMC10385690 OTO - NOTNLM OT - bio-based polymers OT - flexural strength OT - intrinsic properties OT - natural fibers COIS- The authors declare no conflict of interest. EDAT- 2023/07/29 11:52 MHDA- 2023/07/29 11:53 PMCR- 2023/07/24 CRDT- 2023/07/29 01:41 PHST- 2023/07/03 00:00 [received] PHST- 2023/07/17 00:00 [revised] PHST- 2023/07/19 00:00 [accepted] PHST- 2023/07/29 11:53 [medline] PHST- 2023/07/29 11:52 [pubmed] PHST- 2023/07/29 01:41 [entrez] PHST- 2023/07/24 00:00 [pmc-release] AID - polym15143137 [pii] AID - polymers-15-03137 [pii] AID - 10.3390/polym15143137 [doi] PST - epublish SO - Polymers (Basel). 2023 Jul 24;15(14):3137. doi: 10.3390/polym15143137.