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Lee D, Noh J, Moon SY, Shin TJ, Choi YK, Park J. Pectin Nanoporous Structures Prepared via Salt-Induced Phase Separation and Ambient Azeotropic Evaporation Processes. Biomacromolecules 2024; 25:1709-1723. [PMID: 38377481 DOI: 10.1021/acs.biomac.3c01230] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/22/2024]
Abstract
Polysaccharide nanoporous structures are suitable for various applications, ranging from biomedical scaffolds to adsorption materials, owing to their biocompatibility and large surface areas. Pectin, in particular, can create 3D nanoporous structures in aqueous solutions by binding with calcium cations and creating nanopores by phase separation; this process involves forming hydrogen bonds between alcohols and pectin chains in water and alcohol mixtures and the resulting penetration of alcohols into calcium-bound pectin gels. However, owing to the dehydration and condensation of polysaccharide chains during drying, it has proven to be challenging to maintain the 3D nanoporous structure without using a freeze-drying process or supercritical fluid. Herein, we report a facile method for creating polysaccharide-based xerogels, involving the co-evaporation of water with a nonsolvent (e.g., a low-molecular-weight hydrophobic alcohol such as isopropyl or n-propyl alcohol) at ambient conditions. Experiments and coarse-grained molecular dynamics simulations confirmed that salt-induced phase separation and hydrogen bonding between hydrophobic alcohols and pectin chains were the dominant processes in mixtures of pectin, water, and hydrophobic alcohols. Furthermore, the azeotropic evaporation of water and alcohol mixed in approximately 1:1 molar ratios was maintained during the natural drying process under ambient conditions, preventing the hydration and aggregation of the hydrophilic pectin chains. These results introduce a simple and convenient process to produce 3D polysaccharide xerogels under ambient conditions.
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Affiliation(s)
- Dabin Lee
- Department of Chemical Engineering, Department of Intelligent Energy and Industry, Chung-Ang University, Seoul 06974, Republic of Korea
| | - Juran Noh
- Department of Material Science and Engineering, Texas A&M University, College Station, Texas 77843, United States
| | - Su-Young Moon
- Gas & Carbon Convergent Research Center, Chemical & Process Technology, Korea Research Institute of Chemical Technology, Daejeon 34114, Republic of Korea
| | - Tae Joo Shin
- UNIST Central Research Facilities & School of Natural Science, Ulsan National Institute of Science and Technology (UNIST), Ulsan 44919, Republic of Korea
| | - Yeol Kyo Choi
- Departments of Biological Sciences and Chemistry, Lehigh University, Bethlehem, Pennsylvania 18015, United States
| | - Juhyun Park
- Department of Chemical Engineering, Department of Intelligent Energy and Industry, Chung-Ang University, Seoul 06974, Republic of Korea
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Vrabič-Brodnjak U. Hybrid Materials of Bio-Based Aerogels for Sustainable Packaging Solutions. Gels 2023; 10:27. [PMID: 38247750 PMCID: PMC10815338 DOI: 10.3390/gels10010027] [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: 12/06/2023] [Revised: 12/20/2023] [Accepted: 12/21/2023] [Indexed: 01/23/2024] Open
Abstract
This review explores the field of hybrid materials in the context of bio-based aerogels for the development of sustainable packaging solutions. Increasing global concern over environmental degradation and the growing demand for environmentally friendly alternatives to conventional packaging materials have led to a growing interest in the synthesis and application of bio-based aerogels. These aerogels, which are derived from renewable resources such as biopolymers and biomass, have unique properties such as a lightweight structure, excellent thermal insulation, and biodegradability. The manuscript addresses the innovative integration of bio-based aerogels with various other materials such as nanoparticles, polymers, and additives to improve their mechanical, barrier, and functional properties for packaging applications. It critically analyzes recent advances in hybridization strategies and highlights their impact on the overall performance and sustainability of packaging materials. In addition, the article identifies the key challenges and future prospects associated with the development and commercialization of hybrid bio-based aerogel packaging materials. The synthesis of this knowledge is intended to contribute to ongoing efforts to create environmentally friendly alternatives that address the current problems associated with conventional packaging while promoting a deeper understanding of the potential of hybrid materials for sustainable packaging solutions.
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Affiliation(s)
- Urška Vrabič-Brodnjak
- Department of Textiles, Graphic Arts and Design, Faculty of Natural Sciences and Engineering, University of Ljubljana, Snežniška 5, 1000 Ljubljana, Slovenia
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Liu S. Preparation of nanocellulose grafted molecularly imprinted polymer for selective adsorption Pb(II) and Hg(II). CHEMOSPHERE 2023; 316:137832. [PMID: 36640989 DOI: 10.1016/j.chemosphere.2023.137832] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/09/2022] [Revised: 12/18/2022] [Accepted: 01/10/2023] [Indexed: 06/17/2023]
Abstract
Heavy metal pollution has become a major problem in environmental pollution. Ion imprinted polymers with specific identification and wide practicality have gradually become an important tool for wastewater treatment. In this work, ion-imprinted polymer-grafted modified nanocellulose was designed as an adsorbent for the serious hazard of Pb(II) and Hg(II) in wastewater. This work used medical cotton wool as raw material to prepare a nanocellulose suspension by acid-catalyzed hydrolysis. The high reactivity of carbonyl diimidazole (CDI) was utilized to react with acrylic acid (AA) to generate reactive intermediates, which then reacted with nanocellulose to form activated nanocellulose (AA-CDI-NC). Crown ether was used as functional monomers to synthesize Pb(II) ion-imprinted polymers and grafted onto the AA-CDI-NC surface (Pb(II)-MIP-NC). Meanwhile, Hg(II) ion-imprinted polymer was synthesized and grafted onto the AA-CDI-NC surface (Hg(II)-MIP-NC) using thymine as a functional monomer. The experimental results showed that Pb(II)-MIP-NC and Hg(II)-MIP-NC could effectively adsorb Pb(II) and Hg(II), respectively. Their adsorption behaviors for Pb(II) and Hg(II) were consistent with the secondary kinetic model and Langmuir adsorption isotherm model. The adsorption capacities of Pb (II)-MIP-NC and Hg (II)-MIP-NC for Pb (II) and Hg (II) were 27.55 mg/g and 161.31, respectively.
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Affiliation(s)
- Shuo Liu
- State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology, Beijing, 100029, China.
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Recently emerging trends in xerogel polymeric nanoarchitectures and multifunctional applications. Polym Bull (Berl) 2022. [DOI: 10.1007/s00289-022-04625-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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Abdul Khalil HPS, Yahya EB, Tajarudin HA, Balakrishnan V, Nasution H. Insights into the Role of Biopolymer-Based Xerogels in Biomedical Applications. Gels 2022; 8:334. [PMID: 35735678 PMCID: PMC9222565 DOI: 10.3390/gels8060334] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2022] [Revised: 05/21/2022] [Accepted: 05/25/2022] [Indexed: 12/18/2022] Open
Abstract
Xerogels are advanced, functional, porous materials consisting of ambient, dried, cross-linked polymeric networks. They possess characteristics such as high porosity, great surface area, and an affordable preparation route; they can be prepared from several organic and inorganic precursors for numerous applications. Owing to their desired properties, these materials were found to be suitable for several medical and biomedical applications; the high drug-loading capacity of xerogels and their ability to maintain sustained drug release make them highly desirable for drug delivery applications. As biopolymers and chemical-free materials, they have been also utilized in tissue engineering and regenerative medicine due to their high biocompatibility, non-immunogenicity, and non-cytotoxicity. Biopolymers have the ability to interact, cross-link, and/or trap several active agents, such as antibiotic or natural antimicrobial substances, which is useful in wound dressing and healing applications, and they can also be used to trap antibodies, enzymes, and cells for biosensing and monitoring applications. This review presents, for the first time, an introduction to biopolymeric xerogels, their fabrication approach, and their properties. We present the biological properties that make these materials suitable for many biomedical applications and discuss the most recent works regarding their applications, including drug delivery, wound healing and dressing, tissue scaffolding, and biosensing.
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Affiliation(s)
- H. P. S. Abdul Khalil
- School of Industrial Technology, Universiti Sains Malaysia, Penang 11800, Malaysia; (E.B.Y.); (H.A.T.)
- Cluster of Green Biopolymer, Coatings and Packaging, School of Industrial Technology, Universiti Sains Malaysia, Penang 11800, Malaysia
| | - Esam Bashir Yahya
- School of Industrial Technology, Universiti Sains Malaysia, Penang 11800, Malaysia; (E.B.Y.); (H.A.T.)
- Cluster of Green Biopolymer, Coatings and Packaging, School of Industrial Technology, Universiti Sains Malaysia, Penang 11800, Malaysia
| | - Husnul Azan Tajarudin
- School of Industrial Technology, Universiti Sains Malaysia, Penang 11800, Malaysia; (E.B.Y.); (H.A.T.)
| | - Venugopal Balakrishnan
- Institute for Research in Molecular Medicine, Universiti Sains Malaysia, Penang 11800, Malaysia;
| | - Halimatuddahliana Nasution
- Department of Chemical Engineering, Faculty of Engineering, Universitas Sumatera Utara, Medan 20155, Indonesia;
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Jacob S, R R, Antony S, Madhavan A, Sindhu R, Kumar Awasthi M, Kuddus M, Pillai S, Varjani S, Pandey A, Binod P. Nanocellulose in tissue engineering and bioremediation: mechanism of action. Bioengineered 2022; 13:12823-12833. [PMID: 35609323 PMCID: PMC9275936 DOI: 10.1080/21655979.2022.2074739] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
Abstract
Nanocellulose are nano-sized components which are biodegradable, biocompatible and renewable. It offers mechanical strength and chemical stability in plants and bacteria. The environmental contamination is reduced by employing various bioremediation techniques which usesmicroorganisms like algae, bacteria and fungi as bio-adsorbents. The bio adsorbent property of nanocellulose contribute more for the bioremediation methods and the detailed study of its mechanism and application is essential which is discussed here. The mechanism happening between the contaminant and nanocellulose adsorbent should be explored in detail in order to develop effective new bioremediation strategies. Nanocellulose structural functionalization helps to modify the nanocellulose structure based on which it can be utilized for specific functions. Exploring the mechanisms that contribute to the implementation of nanocellulose in tissue engineering helps for further developments and advancement in the biomedical application of nanocellulose. Not much studies are available that elucidate and study the basic steps involved in the biomedical and environmental usage of nanocellulose. This review has focussed on the basic mechanisms involved in the use of nanocellulose in tissue engineering and bioremediation processes.
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Affiliation(s)
- Sherin Jacob
- Department of Biochemistry, Pushpagiri Institute of Medical Sciences and Research Centre, Thiruvalla, India
| | - Reshmy R
- Department of Science and Humanities, Providence College of Engineering, Chengannur, India
| | - Sherly Antony
- Department of Microbiology, Pushpagiri Institute of Medical Sciences and Research Centre, Thiruvalla, India
| | - Aravind Madhavan
- Mycobacterium Research Laboratory, Pathogen Biology Division, Rajiv Gandhi Center for Biotechnology, Jagathy, Thiruvananthapuram, India
| | - Raveendran Sindhu
- Department of Food Technology, T K M Institute of Technology, Kollam, India
| | - Mukesh Kumar Awasthi
- College of Natural Resources and Environment, Northwest a & F University, Yangling, China
| | - Mohammed Kuddus
- Department of Biochemistry, College of Medicine, University of Hail, Hail, Saudi Arabia
| | - Santhosh Pillai
- Department of Biotechnology and Food Science, Durban University of Technology, Durban, South Africa
| | - Sunita Varjani
- Gujarat Pollution Control Board, Paryavaran Bhavan, Gandhinagar, India
| | - Ashok Pandey
- Centre for Innovation and Translational Research, CSIR- Indian Institute for Toxicology Research (CSIR-IITR), Lucknow, India.,Centre for Energy and Environmental Sustainability, Lucknow, India.,Sustainability Cluster, School of Engineering, University of Petroleum and Energy Studies, Dehradun, India
| | - Parameswaran Binod
- Microbial Processes and Technology Division, CSIR-National Institute for Interdisciplinary Science and Technology (CSIR-NIIST), Trivandrum, India
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Espinosa E, Bascón-Villegas I, Rosal A, Pérez-Rodríguez F, Chinga-Carrasco G, Rodríguez A. PVA/(ligno)nanocellulose biocomposite films. Effect of residual lignin content on structural, mechanical, barrier and antioxidant properties. Int J Biol Macromol 2019; 141:197-206. [PMID: 31479671 DOI: 10.1016/j.ijbiomac.2019.08.262] [Citation(s) in RCA: 48] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2019] [Revised: 08/29/2019] [Accepted: 08/30/2019] [Indexed: 11/19/2022]
Abstract
Nanocelluloses with and without residual lignin were isolated from wheat straw. In addition, the effect of TEMPO-mediated oxidation on the production of lignin-containing nanocellulose was studied. The different nanocelluloses were used as reinforcing agent in Poly(vinyl alcohol) films. The morphology, crystallinity, surface microstructure, barrier properties, light transmittance, mechanical and antioxidant properties were evaluated. The translucency of films was reduced by the addition of nanocellulose, however, the ability to block UV-light increased from 10% for PVA to >50% using lignin-containing nanocellulose, and 30% for lignin-free samples. The mechanical properties increased considerably, however, for loads higher than 5% a negative trend was observed presumptively due to a clustering of nanocellulose components in PVA matrix. The barrier properties of the films were improved with the use of nanocellulose, especially at small amounts (1-3%). The antioxidant capacity of films was increased up to 10% using lignin-containing nanocellulose compared to 4.7% using PVA.
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Affiliation(s)
- Eduardo Espinosa
- Chemical Engineering Department, Faculty of Science, University of Córdoba, Córdoba 14014, Spain.
| | - Isabel Bascón-Villegas
- Chemical Engineering Department, Faculty of Science, University of Córdoba, Córdoba 14014, Spain
| | - Antonio Rosal
- Molecular Biology and Biochemical Engineering Department, University Pablo de Olavide, Seville, Spain
| | - Fernando Pérez-Rodríguez
- Department of Food Science and Technology, Faculty of Veterinary, University of Córdoba, 14014 Córdoba, Spain
| | | | - Alejandro Rodríguez
- Chemical Engineering Department, Faculty of Science, University of Córdoba, Córdoba 14014, Spain
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