{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,6,1]],"date-time":"2026-06-01T19:57:57Z","timestamp":1780343877831,"version":"3.54.1"},"reference-count":47,"publisher":"MDPI AG","issue":"1","license":[{"start":{"date-parts":[[2024,12,25]],"date-time":"2024-12-25T00:00:00Z","timestamp":1735084800000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"Japan Science and Technology Agency (JST) SPRING","award":["JPMJSP2137"],"award-info":[{"award-number":["JPMJSP2137"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Materials"],"abstract":"<jats:p>Currently, wood-based panels are mainly made from wood and adhesives containing formaldehyde. With the growing demand for raw materials and increasing concern for human health, the use of residues from annual crops to manufacture binder-free biodegradable biomass boards has attracted increasing interest. The aim of this study was to develop a biodegradable bio-board without any adhesives using eggplant straw fibers. The bio-boards were produced via simple mechanical refinement of eggplant straw fibers and were formed under pressures of 2.0 MPa, 3.5 MPa, 5.0 MPa, 6.5 MPa, and 8.0 MPa. The mechanical properties and dimensional stability of the manufactured bio-boards were evaluated. With increasing applied pressure, the bending rupture stress of the bio-boards increased from 27.69 MPa to 45.29 MPa, the tensile rupture stress varied from 12.45 MPa to 24.62 MPa, the water absorption decreased from 91.45% to 88.29%, and the contact angle increased from 89.67\u00b0 to 90.45\u00b0. The bio-boards were subjected to morphological analysis (SEM) and porosity and crystallinity measurements (XRD), and the results indicated that the water absorption of the bio-boards was due to a combination of porosity and crystallinity. The results showed that eggplant straw is suitable for manufacturing bio-boards.<\/jats:p>","DOI":"10.3390\/ma18010037","type":"journal-article","created":{"date-parts":[[2024,12,25]],"date-time":"2024-12-25T19:27:46Z","timestamp":1735154866000},"page":"37","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":3,"title":["Development and Characterization of Biodegradable, Binderless Fiberboards from Eggplant Straw Fibers"],"prefix":"10.3390","volume":"18","author":[{"ORCID":"https:\/\/orcid.org\/0009-0006-5278-972X","authenticated-orcid":false,"given":"Hailun","family":"Fan","sequence":"first","affiliation":[{"name":"Graduate School of Bioresources, Mie University, Tsu 514-8507, Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Xiulun","family":"Wang","sequence":"additional","affiliation":[{"name":"Graduate School of Bioresources, Mie University, Tsu 514-8507, Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Tingting","family":"Wu","sequence":"additional","affiliation":[{"name":"Graduate School of Bioresources, Mie University, Tsu 514-8507, Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-0857-2842","authenticated-orcid":false,"given":"Jianzhong","family":"Sun","sequence":"additional","affiliation":[{"name":"International Joint Research Center on High-Value Utilization of Agricultural Waste Biomass Between Jiangsu University, China, and Mie University, Japan, Zhenjiang 212013, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-5393-3187","authenticated-orcid":false,"given":"Jun","family":"Liu","sequence":"additional","affiliation":[{"name":"International Joint Research Center on High-Value Utilization of Agricultural Waste Biomass Between Jiangsu University, China, and Mie University, Japan, Zhenjiang 212013, China"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2024,12,25]]},"reference":[{"key":"ref_1","unstructured":"FAO Data Statistics (2022). ProductionCrops and Livestock Products, FAO. Revision."},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"102468","DOI":"10.1016\/j.jdeveco.2020.102468","article-title":"Straw Burning, PM2.5, and Death: Evidence from China","volume":"145","author":"He","year":"2020","journal-title":"J. Dev. Econ."},{"key":"ref_3","doi-asserted-by":"crossref","first-page":"2277","DOI":"10.1007\/s10311-022-01435-8","article-title":"Strategies to Achieve a Carbon Neutral Society: A Review","volume":"20","author":"Chen","year":"2022","journal-title":"Environ. Chem. Lett."},{"key":"ref_4","doi-asserted-by":"crossref","unstructured":"Ning, P., Yang, G., Hu, L., Sun, J., Shi, L., Zhou, Y., Wang, Z., and Yang, J. (2021). Recent Advances in the Valorization of Plant Biomass. Biotechnol. Biofuels, 14.","DOI":"10.1186\/s13068-021-01949-3"},{"key":"ref_5","doi-asserted-by":"crossref","first-page":"117311","DOI":"10.1016\/j.carbpol.2020.117311","article-title":"Micro- and Nano-Structures of Cellulose from Eggplant Plant (Solanum melongena L.) Agricultural Residue","volume":"253","author":"Bahloul","year":"2021","journal-title":"Carbohydr. Polym."},{"key":"ref_6","doi-asserted-by":"crossref","first-page":"3358","DOI":"10.1002\/anie.200460587","article-title":"Cellulose: Fascinating Biopolymer and Sustainable Raw Material","volume":"44","author":"Klemm","year":"2005","journal-title":"Angew. Chem.-Int. Ed."},{"key":"ref_7","doi-asserted-by":"crossref","first-page":"1253","DOI":"10.1002\/pen.21328","article-title":"Pretreatments of Natural Fibers and Their Application as Reinforcing Material in Polymer Composites\u2014A Review","volume":"49","author":"Kalia","year":"2009","journal-title":"Polym. Eng. Sci."},{"key":"ref_8","doi-asserted-by":"crossref","first-page":"169","DOI":"10.1016\/j.progpolymsci.2015.07.003","article-title":"Recent Advances in Regenerated Cellulose Materials","volume":"53","author":"Wang","year":"2016","journal-title":"Prog. Polym. Sci."},{"key":"ref_9","doi-asserted-by":"crossref","first-page":"247","DOI":"10.1515\/hfsg.1987.41.4.247","article-title":"The Bonding Mechanism in Hardboard Manufacture Review Report","volume":"41","author":"Back","year":"1987","journal-title":"Holzforschung"},{"key":"ref_10","doi-asserted-by":"crossref","first-page":"1285","DOI":"10.1007\/s00226-013-0574-3","article-title":"A Review of Wood Thermal Pretreatments to Improve Wood Composite Properties","volume":"47","author":"Yadama","year":"2013","journal-title":"Wood Sci. Technol."},{"key":"ref_11","doi-asserted-by":"crossref","first-page":"420","DOI":"10.1007\/s40725-024-00229-1","article-title":"Sustainability, Circularity, and Innovation in Wood-Based Panel Manufacturing in the 2020s: Opportunities and Challenges","volume":"10","author":"Garcia","year":"2024","journal-title":"Curr. For. Rep."},{"key":"ref_12","doi-asserted-by":"crossref","first-page":"4448","DOI":"10.1002\/pc.25749","article-title":"Adhesive Application on Particleboard from Natural Fibers: A Review","volume":"41","author":"Owodunni","year":"2020","journal-title":"Polym. Compos."},{"key":"ref_13","doi-asserted-by":"crossref","first-page":"437","DOI":"10.1016\/j.indcrop.2008.08.007","article-title":"Manufacture of Non-Resin Wheat Straw Fibreboards","volume":"29","author":"Halvarsson","year":"2009","journal-title":"Ind. Crops Prod."},{"key":"ref_14","unstructured":"Bunsell, A.R. (2018). 9\u2013Hemp, Jute, Banana, Kenaf, Ramie, Sisal Fibers. Handbook of Properties of Textile and Technical Fibres, Woodhead Publishing. [2nd ed.]."},{"key":"ref_15","doi-asserted-by":"crossref","first-page":"102625","DOI":"10.1016\/j.jobe.2021.102625","article-title":"Binderless Fiberboards for Sustainable Construction. Materials, Production Methods and Applications","volume":"44","author":"Vitrone","year":"2021","journal-title":"J. Build Eng."},{"key":"ref_16","first-page":"1161","article-title":"The Research on the Physical and Chemical Properties of Eggplant Stalk Fiber for the Complex Utilization of Stalk","volume":"881\u2013883","author":"Li","year":"2014","journal-title":"AMR"},{"key":"ref_17","first-page":"399","article-title":"A Techno-Economical Study on Medium Density Fiberboard Using Napier Grass Fiber as Ceiling Board","volume":"2017","author":"Bakar","year":"2017","journal-title":"Proc. Mech. Eng. Res. Day"},{"key":"ref_18","doi-asserted-by":"crossref","unstructured":"Indrawan, D.A., Efiyanti, L., Hastuti, N., Damayanti, R., Pari, G., Sulastiningsih, I.M., and Santoso, A. (2024). Hardboard Quality of Mixed Sisal, Gelagah Grass and Empty Palm Oil Fruit Bunches Bonded with Tannin-Formaldehyde Adhesive. AIP Conference Proceedings, AIP Publishing.","DOI":"10.1063\/5.0184691"},{"key":"ref_19","doi-asserted-by":"crossref","first-page":"69","DOI":"10.1515\/aslh-2017-0005","article-title":"Energy Grass as Raw Material for MDF Production","volume":"13","year":"2017","journal-title":"Acta Silv. Lignaria Hung"},{"key":"ref_20","doi-asserted-by":"crossref","unstructured":"Yushada, A., Nurjannah, S., Rasidi, R., Siti, N., and Ishak, W.M.F. (2018). Mechanical Properties of Particleboard from Seaweed (Kappaphycus alvarezii), AIP Publishing.","DOI":"10.1063\/1.5066856"},{"key":"ref_21","doi-asserted-by":"crossref","unstructured":"Kuqo, A., and Mai, C. (2022). Seagrass Leaves: An Alternative Resource for the Production of Insulation Materials. Materials, 15.","DOI":"10.3390\/ma15196933"},{"key":"ref_22","doi-asserted-by":"crossref","first-page":"161","DOI":"10.1016\/j.sajb.2017.03.016","article-title":"Structure and Content of Phenolics in Eggplant (Solanum Melongena)\u2014A Review","volume":"111","author":"Heredia","year":"2017","journal-title":"S. Afr. J. Bot."},{"key":"ref_23","doi-asserted-by":"crossref","first-page":"3161","DOI":"10.1007\/s12649-020-01236-6","article-title":"Characterization and Pulping of Crops Residue: Eggplant, Cassava, Okra and Mulberry Plants","volume":"12","author":"Ferdous","year":"2021","journal-title":"Waste Biomass Valorization"},{"key":"ref_24","doi-asserted-by":"crossref","first-page":"1356","DOI":"10.52783\/jes.3544","article-title":"Biodegradable Activated Carbon Material Derived from Eggplant Waste for Enhanced Supercapacitor Performance","volume":"20","author":"Banothu","year":"2024","journal-title":"J. Electr. Syst."},{"key":"ref_25","doi-asserted-by":"crossref","first-page":"661","DOI":"10.1007\/s00226-015-0728-6","article-title":"A Review of Preparation of Binderless Fiberboards and Its Self-Bonding Mechanism","volume":"49","author":"Zhang","year":"2015","journal-title":"Wood Sci. Technol."},{"key":"ref_26","doi-asserted-by":"crossref","first-page":"4630","DOI":"10.1016\/j.jmrt.2022.08.166","article-title":"Particleboard from Agricultural Biomass and Recycled Wood Waste: A Review","volume":"20","author":"Lee","year":"2022","journal-title":"J. Mater. Res. Technol."},{"key":"ref_27","doi-asserted-by":"crossref","first-page":"199","DOI":"10.1016\/j.ijadhadh.2014.01.026","article-title":"Cross-Linked Soy-Based Wood Adhesives for Plywood","volume":"50","author":"Lei","year":"2014","journal-title":"Int. J. Adhes. Adhes."},{"key":"ref_28","doi-asserted-by":"crossref","first-page":"117907","DOI":"10.1016\/j.indcrop.2023.117907","article-title":"Formaldehyde-Free Environmentally Friendly Lignocellulosic Composites Made from Poplar and Lignin Obtained from Paper Mills","volume":"208","author":"Zhong","year":"2024","journal-title":"Ind. Crops Prod."},{"key":"ref_29","doi-asserted-by":"crossref","first-page":"302","DOI":"10.1016\/j.matdes.2013.03.011","article-title":"Characterization of Date Palm Lignocellulosic By-Products and Self-Bonded Composite Materials Obtained Thereof","volume":"50","author":"Saadaoui","year":"2013","journal-title":"Mater. Des."},{"key":"ref_30","first-page":"50","article-title":"Use of Detergents in the Analysis of Fibrous Feeds. IV. Determination of Plant Cell-Wall Constituents","volume":"50","author":"Soest","year":"1967","journal-title":"J. Assoc. Off. Anal. Chem."},{"key":"ref_31","first-page":"780","article-title":"Determination of Lignin and Cellulose in Acid-Detergent Fiber with Permanganate","volume":"51","author":"Wine","year":"1968","journal-title":"J. Assoc. Off. Anal. Chem."},{"key":"ref_32","unstructured":"(2014). Fiberboards (Standard No. JIS A5905)."},{"key":"ref_33","doi-asserted-by":"crossref","first-page":"15","DOI":"10.1007\/s00107-018-1358-0","article-title":"Production of Fiberboard from Rice Straw Thermomechanical Extrudates by Thermopressing: Influence of Fiber Morphology, Water and Lignin Content","volume":"77","author":"Theng","year":"2019","journal-title":"Eur. J. Wood Wood Prod."},{"key":"ref_34","doi-asserted-by":"crossref","first-page":"6692","DOI":"10.15376\/biores.17.4.6692-6705","article-title":"Performance of Binderless Board Manufactured Using Camphor Tree Residue","volume":"17","author":"Cai","year":"2022","journal-title":"BioResources"},{"key":"ref_35","doi-asserted-by":"crossref","first-page":"132436","DOI":"10.1016\/j.chemosphere.2021.132436","article-title":"Bio-Based Composites Fabricated from Wood Fibers through Self-Bonding Technology","volume":"287","author":"Ye","year":"2022","journal-title":"Chemosphere"},{"key":"ref_36","doi-asserted-by":"crossref","first-page":"141710","DOI":"10.1016\/j.jclepro.2024.141710","article-title":"Green Recyclable Biocomposite Prepared from Lignin and Bamboo","volume":"449","author":"Ren","year":"2024","journal-title":"J. Clean. Prod."},{"key":"ref_37","doi-asserted-by":"crossref","first-page":"2379","DOI":"10.1007\/s10570-013-0019-z","article-title":"Influence of Drying Method on the Material Properties of Nanocellulose I: Thermostability and Crystallinity","volume":"20","author":"Peng","year":"2013","journal-title":"Cellulose"},{"key":"ref_38","doi-asserted-by":"crossref","unstructured":"Park, S., Baker, J.O., Himmel, M.E., Parilla, P.A., and Johnson, D.K. (2010). RCeseealrlcuh Lose Crystallinity Index: Measurement Techniques and Their Impact on Interpreting Cellulase Performance. Biotechnol. Biofuels, 3.","DOI":"10.1186\/1754-6834-3-10"},{"key":"ref_39","doi-asserted-by":"crossref","first-page":"109","DOI":"10.1166\/jbmb.2007.1984","article-title":"Interfacial Modification of Hemp Fiber Reinforced Composites Using Fungal and Alkali Treatment","volume":"1","author":"Pickering","year":"2007","journal-title":"J. Biobased Mater. Bioenergy"},{"key":"ref_40","doi-asserted-by":"crossref","first-page":"1331","DOI":"10.1016\/j.compscitech.2011.05.002","article-title":"Effect of Curing Cycle on Void Distribution and Interlaminar Shear Strength in Polymer-Matrix Composites","volume":"71","author":"Sket","year":"2011","journal-title":"Compos. Sci. Technol."},{"key":"ref_41","doi-asserted-by":"crossref","first-page":"502","DOI":"10.1016\/j.conbuildmat.2019.03.279","article-title":"Recent Development in Binderless Fiber-Board Fabrication from Agricultural Residues: A Review","volume":"211","author":"Nasir","year":"2019","journal-title":"Constr. Build. Mater."},{"key":"ref_42","doi-asserted-by":"crossref","first-page":"221","DOI":"10.1016\/S0079-6700(98)00018-5","article-title":"Composites Reinforced with Cellulose Based Fibres","volume":"24","author":"Bledzki","year":"1999","journal-title":"Prog. Polym. Sci."},{"key":"ref_43","doi-asserted-by":"crossref","first-page":"38","DOI":"10.1016\/j.compositesa.2015.11.027","article-title":"Binderless All-Cellulose Fibreboard from Microfibrillated Lignocellulosic Natural Fibres","volume":"83","author":"Peijs","year":"2016","journal-title":"Compos. Part A Appl. Sci. Manuf."},{"key":"ref_44","first-page":"6014","article-title":"Comparing Properties of North American Manufactured Particleboard and Medium Density Fiberboard\u2013Part I: Particleboard","volume":"10","author":"Dettmer","year":"2015","journal-title":"BioResources"},{"key":"ref_45","doi-asserted-by":"crossref","first-page":"127","DOI":"10.1021\/ba-1984-0207.ch003","article-title":"Wood-Water Relationships","volume":"Volume 207","author":"Skaar","year":"1984","journal-title":"The Chemistry of Solid Wood"},{"key":"ref_46","doi-asserted-by":"crossref","first-page":"123296","DOI":"10.1016\/j.jhazmat.2020.123296","article-title":"Development of Formaldehyde-Free Bio-Board Produced from Mushroom Mycelium and Substrate Waste","volume":"400","author":"Khoo","year":"2020","journal-title":"J. Hazard. Mater."},{"key":"ref_47","doi-asserted-by":"crossref","first-page":"2686","DOI":"10.1080\/15567036.2018.1511642","article-title":"Hydrophilic and Hydrophobic Materials and Their Applications","volume":"40","author":"Ahmad","year":"2018","journal-title":"Energy Sources Part A"}],"container-title":["Materials"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.mdpi.com\/1996-1944\/18\/1\/37\/pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,10,10]],"date-time":"2025-10-10T17:00:08Z","timestamp":1760115608000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.mdpi.com\/1996-1944\/18\/1\/37"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2024,12,25]]},"references-count":47,"journal-issue":{"issue":"1","published-online":{"date-parts":[[2025,1]]}},"alternative-id":["ma18010037"],"URL":"https:\/\/doi.org\/10.3390\/ma18010037","relation":{},"ISSN":["1996-1944"],"issn-type":[{"value":"1996-1944","type":"electronic"}],"subject":[],"published":{"date-parts":[[2024,12,25]]}}}