Processing strategy for reduced energy demand of nanostructured CNF/clay composites with tailored interfacesShow others and affiliations
2023 (English)In: Carbohydrate Polymers, ISSN 0144-8617, E-ISSN 1879-1344, Vol. 312, article id 120788Article in journal (Refereed) Published
Abstract [en]
Nacre-mimicking nanocomposites based on colloidal cellulose nanofibrils (CNFs) and clay nanoparticles show excellent mechanical properties, yet processing typically involves preparation of two colloids followed by a mixing step, which is time- and energy-consuming. In this study, a facile preparation method using low energy kitchen blenders is reported in which CNF disintegration, clay exfoliation and mixing carried out in one step. Compared to composites made from the conventional method, the energy demand is reduced by about 97 %; the composites also show higher strength and work to fracture. Colloidal stability, CNF/clay nanostructure, and CNF/clay orientation are well characterized. The results suggest favorable effects from hemicellulose-rich, negatively charged pulp fibers and corresponding CNFs. CNF disintegration and colloidal stability are facilitated with substantial CNF/clay interfacial interaction. The results show a more sustainable and industrially relevant processing concept for strong CNF/clay nanocomposites. © 2023 The Authors
Place, publisher, year, edition, pages
Elsevier Ltd , 2023. Vol. 312, article id 120788
Keywords [en]
CNF/clay biocomposites, Cumulative energy demand, Exfoliation, Fibrillation, XRD, Cellulose, Disintegration, Energy management, Exfoliation (materials science), Nanocomposites, Biocomposite, Cellulose nanofibril/clay biocomposite, Cellulose nanofibrils, Colloidal Stability, Cumulative energy demands, Energy demands, Processing strategies, Mixing, Clay, Composites, Energy, Stability
National Category
Composite Science and Engineering
Identifiers
URN: urn:nbn:se:ri:diva-64305DOI: 10.1016/j.carbpol.2023.120788Scopus ID: 2-s2.0-85150391929OAI: oai:DiVA.org:ri-64305DiVA, id: diva2:1755192
Note
Funding details: National Natural Science Foundation of China, NSFC, 2022C01234, 22108244, 22278359; Funding details: Knut och Alice Wallenbergs Stiftelse; Funding details: Kungliga Tekniska Högskolan, KTH; Funding details: Vetenskapsrådet, VR, 2021-03882; Funding details: Stockholms Universitet, SU; Funding details: Wallenberg Wood Science Center, WWSC; Funding text 1: The authors acknowledge funding from the Swedish Research Council , project 2021-03882 , and the Knut and Alice Wallenberg Foundation through Wallenberg Wood Science Center and the Biocomposites program at the KTH Royal Institute of Technology. X.Y. is thankful for the funding from National Natural Science Foundation of China (Grants NO. 22278359 and 22108244 ), “Pioneer” and “Leading Goose” R&D Program of Zhejiang (Grant NO. 2022C01234 ). The authors acknowledge Dr. Andrew Inge (MMK, Stockholm University) for the assistance of WAXD measurements.; Funding text 2: The authors acknowledge funding from the Swedish Research Council, project 2021-03882, and the Knut and Alice Wallenberg Foundation through Wallenberg Wood Science Center and the Biocomposites program at the KTH Royal Institute of Technology. X.Y. is thankful for the funding from National Natural Science Foundation of China (Grants NO. 22278359 and 22108244), “Pioneer” and “Leading Goose” R&D Program of Zhejiang (Grant NO. 2022C01234).
2023-05-052023-05-052023-11-13Bibliographically approved