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Onyianta AJ, Xu G, Etale A, Eloi JC, Eichhorn SJ. Tackling the challenge of drying and redispersion of cellulose nanofibrils via membrane-facilitated liquid phase exchange. Carbohydr Polym 2023; 314:120943. [PMID: 37173032 DOI: 10.1016/j.carbpol.2023.120943] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2023] [Revised: 03/31/2023] [Accepted: 04/19/2023] [Indexed: 05/15/2023]
Abstract
It is generally acknowledged that to advance the application of cellulose nanofibrils (CNFs) in product formulations, challenges associated with the drying and redispersion of this material must be addressed. Despite increased research efforts in this area, these interventions still involve the use of additives or conventional drying technologies, which both have the capacity to drive up the cost of the final CNF powders. Herein, we prepared dried and redispersible CNF powders with varying surface functionalities without the use of additives nor conventional drying technologies. Rapid drying in air was achieved after liquid phase exchange from water to isopropyl alcohol. The surface properties, morphology and thermal stabilities were the same for the never-dried and redispersed forms. The rheological properties of the CNFs were also unaffected after drying and redispersion of unmodified and organic acid modified materials. However, for 2,2,6,6-tetramethylpiperidine 1-oxyl (TEMPO)-mediated oxidised CNFs with higher surface charge and longer fibrils, the storage modulus could not be recovered to the never-dried state because of the possible non-selective reduction in length upon redispersion. Nevertheless, this method provides an effective and low-cost process for the drying and redispersion of unmodified and surface modified CNFs.
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Affiliation(s)
- Amaka J Onyianta
- Bristol Composites Institute, School of Civil, Aerospace and Mechanical Engineering, University of Bristol, University Walk, Bristol BS8 1TR, UK.
| | - Guofan Xu
- Bristol Composites Institute, School of Civil, Aerospace and Mechanical Engineering, University of Bristol, University Walk, Bristol BS8 1TR, UK
| | - Anita Etale
- Bristol Composites Institute, School of Civil, Aerospace and Mechanical Engineering, University of Bristol, University Walk, Bristol BS8 1TR, UK
| | | | - Stephen J Eichhorn
- Bristol Composites Institute, School of Civil, Aerospace and Mechanical Engineering, University of Bristol, University Walk, Bristol BS8 1TR, UK
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Solhi L, Guccini V, Heise K, Solala I, Niinivaara E, Xu W, Mihhels K, Kröger M, Meng Z, Wohlert J, Tao H, Cranston ED, Kontturi E. Understanding Nanocellulose-Water Interactions: Turning a Detriment into an Asset. Chem Rev 2023; 123:1925-2015. [PMID: 36724185 PMCID: PMC9999435 DOI: 10.1021/acs.chemrev.2c00611] [Citation(s) in RCA: 41] [Impact Index Per Article: 41.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
Modern technology has enabled the isolation of nanocellulose from plant-based fibers, and the current trend focuses on utilizing nanocellulose in a broad range of sustainable materials applications. Water is generally seen as a detrimental component when in contact with nanocellulose-based materials, just like it is harmful for traditional cellulosic materials such as paper or cardboard. However, water is an integral component in plants, and many applications of nanocellulose already accept the presence of water or make use of it. This review gives a comprehensive account of nanocellulose-water interactions and their repercussions in all key areas of contemporary research: fundamental physical chemistry, chemical modification of nanocellulose, materials applications, and analytical methods to map the water interactions and the effect of water on a nanocellulose matrix.
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Affiliation(s)
- Laleh Solhi
- Department of Bioproducts and Biosystems, Aalto University, EspooFI-00076, Finland
| | - Valentina Guccini
- Department of Bioproducts and Biosystems, Aalto University, EspooFI-00076, Finland
| | - Katja Heise
- Department of Bioproducts and Biosystems, Aalto University, EspooFI-00076, Finland
| | - Iina Solala
- Department of Bioproducts and Biosystems, Aalto University, EspooFI-00076, Finland
| | - Elina Niinivaara
- Department of Bioproducts and Biosystems, Aalto University, EspooFI-00076, Finland.,Department of Wood Science, University of British Columbia, Vancouver, British ColumbiaV6T 1Z4, Canada
| | - Wenyang Xu
- Department of Bioproducts and Biosystems, Aalto University, EspooFI-00076, Finland.,Laboratory of Natural Materials Technology, Åbo Akademi University, TurkuFI-20500, Finland
| | - Karl Mihhels
- Department of Bioproducts and Biosystems, Aalto University, EspooFI-00076, Finland
| | - Marcel Kröger
- Department of Bioproducts and Biosystems, Aalto University, EspooFI-00076, Finland
| | - Zhuojun Meng
- Department of Bioproducts and Biosystems, Aalto University, EspooFI-00076, Finland.,Wenzhou Institute, University of Chinese Academy of Sciences, Wenzhou325001, China
| | - Jakob Wohlert
- Wallenberg Wood Science Centre (WWSC), Department of Fibre and Polymer Technology, School of Engineering Sciences in Chemistry, Biotechnology and Health, KTH Royal Institute of Technology, 10044Stockholm, Sweden
| | - Han Tao
- Department of Bioproducts and Biosystems, Aalto University, EspooFI-00076, Finland
| | - Emily D Cranston
- Department of Wood Science, University of British Columbia, Vancouver, British ColumbiaV6T 1Z4, Canada.,Department of Chemical and Biological Engineering, University of British Columbia, Vancouver, British ColumbiaV6T 1Z3, Canada
| | - Eero Kontturi
- Department of Bioproducts and Biosystems, Aalto University, EspooFI-00076, Finland
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Adjuik TA, Nokes SE, Montross MD. Biodegradability of bio‐based and synthetic hydrogels as sustainable soil amendments: A review. J Appl Polym Sci 2023. [DOI: 10.1002/app.53655] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Affiliation(s)
- Toby A. Adjuik
- Department of Biosystems and Agricultural Engineering University of Kentucky Lexington Kentucky USA
- Department of Agronomy Iowa State University Ames Iowa USA
| | - Sue E. Nokes
- Department of Biosystems and Agricultural Engineering University of Kentucky Lexington Kentucky USA
| | - Michael D. Montross
- Department of Biosystems and Agricultural Engineering University of Kentucky Lexington Kentucky USA
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Vinzant K, Rashid M, Khodakovskaya MV. Advanced applications of sustainable and biological nano-polymers in agricultural production. FRONTIERS IN PLANT SCIENCE 2023; 13:1081165. [PMID: 36684740 PMCID: PMC9852866 DOI: 10.3389/fpls.2022.1081165] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/26/2022] [Accepted: 12/08/2022] [Indexed: 06/17/2023]
Abstract
Though still in its infancy, the use of nanotechnology has shown promise for improving and enhancing agriculture: nanoparticles (NP) offer the potential solution to depleted and dry soils, a method for the controlled release of agrochemicals, and offer an easier means of gene editing in plants. Due to the continued growth of the global population, it is undeniable that our agricultural systems and practices will need to become more efficient in the very near future. However, this new technology comes with significant worry regarding environmental contamination. NP applied to soils could wash into aquifers and contaminate drinking water, or NP applied to food crops may carry into the end product and contaminate our food supply. These are valid concerns that are not likely to be fully answered in the immediate future due to the complexity of soil-NP interactions and other confounding variables. Therefore, it is obviously preferred that NP used outdoors at this early stage be biodegradable, non-toxic, cost-effective, and sustainably manufactured. Fortunately, there are many different biologically derived, cost-efficient, and biocompatible polymers that are suitable for agricultural applications. In this mini-review, we discuss some promising organic nanomaterials and their potential use for the optimization and enhancement of agricultural practices.
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Screening Additives for Amending Compacted Clay Covers to Enhance Diffusion Barrier Properties and Moisture Retention Performance. APPLIED SCIENCES-BASEL 2022. [DOI: 10.3390/app12147341] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
The cover systems in contaminated sites have some problems, including desiccation cracks, which would lead to degradation of the barrier performance. This study presented a systemic laboratory experimental investigation on the liquid–plastic limit, moisture retention, hydraulic conductivity (k), and gas diffusion barrier properties of amended compacted clay by attapulgite and diatomite for controlling desiccation cracks and migration of water and volatile organic compounds (VOCs). The results showed that the attapulgite could enhance the moisture retention and liquid limit of amended compacted clay. Diatomite could reduce the gas diffusion coefficient (Dθ) significantly. The compacted clay amended by the dual-additives component of attapulgite and diatomite could enhance the liquid limit, moisture retention percent, gas barrier property, and hydraulic performance compared with the unamended clay. Based on the experimental data obtained, the dosage of additives was targeted to be 5%. The moisture retention percent of dual-additives (attapulgite 4% and diatomite 1%) amended clay increased by 82%, the k decreased by 25%, and the Dθ decreased by 42% compared with unamended clay. Scanning electron microscopy (SEM), BET-specific surface area test method (BET), Mercury Intrusion Porosimetry (MIP), and thermogravimetric analysis (TGA) indicated the enhancement mechanism of additives-amended compacted clay.
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