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Huang K, Chateaugiron O, Mairot L, Wang Y. Wood cellulose films with different foldabilities triggered by dissolution and regeneration from concentrated H 2SO 4 and NaOH/urea aqueous solutions. Int J Biol Macromol 2024; 273:133141. [PMID: 38878935 DOI: 10.1016/j.ijbiomac.2024.133141] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2024] [Revised: 06/05/2024] [Accepted: 06/12/2024] [Indexed: 07/07/2024]
Abstract
Forests are a major source of wealth for Canadians, and cellulose makes up the "skeleton" of wood fibers. Concentrated H2SO4 and NaOH/urea aqueous solutions are two efficient solvents that can rapidly dissolve cellulose. Our preliminary experiment obtained regenerated wood cellulose films with different mechanical properties from these two solvents. Therefore, herein, we aim to investigate the effects of aqueous solvents on the structure and properties of wood cellulose films. Regenerated cellulose (RC) films were produced by dissolving wood cellulose in either 64 wt% H2SO4 solution (RC-H4) or NaOH/urea aqueous solution (RC-N4). RC-H4 showed the higher tensile strength (109.78 ± 2.14 MPa), better folding endurance (20-28 times), and higher torsion angle (42°) than RC-N4 (62.90 ± 2.27 MPa, un-foldable, and 12°). The increased cellulose contents in the H2SO4 solutions from 3 to 5 wt% resulted in an improved tensile strength from 102.61 ± 1.99 to 132.93 ± 5.64 MPa and did not affect the foldability. RC-H4 also exhibited better water vapor barrier property (1.52 ± 0.04 × 10-7 g m-1 h-1 Pa-1), superior transparency (~90 % transmittance at 800 nm), but lower thermal stability compared to RC-N4. This work provides special insights into the regenerated wood cellulose from two aqueous solvents and is expected to facilitate the development of high-performance RC films from abundant forestry resources.
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Affiliation(s)
- Kehao Huang
- Department of Food Science and Agricultural Chemistry, McGill University, Ste Anne de Bellevue, Quebec H9X 3V9, Canada.
| | - Ossyane Chateaugiron
- Department of Food Science and Agricultural Chemistry, McGill University, Ste Anne de Bellevue, Quebec H9X 3V9, Canada; Chimie ParisTech, Université Paris Sciences et Lettres, Paris, Île-de-France 75005, France.
| | - Louis Mairot
- Department of Food Science and Agricultural Chemistry, McGill University, Ste Anne de Bellevue, Quebec H9X 3V9, Canada; Agri-food and bioprocessing college, UniLaSalle, Beauvais, Hauts-de-France 60000, France.
| | - Yixiang Wang
- Department of Food Science and Agricultural Chemistry, McGill University, Ste Anne de Bellevue, Quebec H9X 3V9, Canada.
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Huang P, Nie Q, Tang Y, Chen S, He K, Cao M, Wang Z. A novel nerol-segmented waterborne polyurethane coating for the prevention of dental erosion. RSC Adv 2024; 14:16228-16239. [PMID: 38769955 PMCID: PMC11103564 DOI: 10.1039/d4ra01744g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2024] [Accepted: 05/10/2024] [Indexed: 05/22/2024] Open
Abstract
Dental erosion is a common problem in dentistry, and it refers to the chronic pathological loss of dental hard tissues due to nonbacterially produced acids, primarily caused by the exposure of teeth to exogenous acids. Dietary factors play a pivotal part in the pathogenesis of dental erosion, with a high intake of acidic beverages leading to an increased prevalence of dental erosion in adolescents. Fluoride is mainly used in clinical practice to prevent dental erosion. However, long-term fluoride intake may lead to chronic fluorosis symptoms caused by fluoride overdose. Nano-coatings on dental surfaces have become a popular area of research in dental materials in recent years. The objective of this study was to develop a novel nerol-segmented waterborne polyurethane nano-coating to protect teeth from direct contact with an acidic environment and to provide a safe, effective method for preventing dental acid erosion.
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Affiliation(s)
- Peipei Huang
- College of Stomatology, Hangzhou Normal University Hangzhou 310000 China
- Department of Medicine, Lishui University Lishui 323000 China
| | - Qiongfang Nie
- Department of Chemistry, Lishui University Lishui 323000 China
| | - Yu Tang
- Department of Chemistry, Lishui University Lishui 323000 China
| | - Shunshun Chen
- Department of Chemistry, Lishui University Lishui 323000 China
| | - Kaiyuan He
- Department of Chemistry, Lishui University Lishui 323000 China
| | - Mingguo Cao
- College of Stomatology, Hangzhou Normal University Hangzhou 310000 China
- Department of Medicine, Lishui University Lishui 323000 China
| | - Zefeng Wang
- Department of Chemistry, Lishui University Lishui 323000 China
- R&D Center of Green Manufacturing New Materials and Technology of Synthetic Leather, Sichuan University, Lishui University Lishui 323000 China
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Wang W, Liu X, Guo F, Yu Y, Lu J, Li Y, Cheng Q, Peng J, Yu G. Biodegradable cellulose/curcumin films with Janus structure for food packaging and freshness monitoring. Carbohydr Polym 2024; 324:121516. [PMID: 37985100 DOI: 10.1016/j.carbpol.2023.121516] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2023] [Revised: 10/17/2023] [Accepted: 10/18/2023] [Indexed: 11/22/2023]
Abstract
The development of renewable, hydrophobic, and biodegradable intelligent packaging materials as an alternative to petroleum-based plastic products has become a new research focus in recent years, but remains a challenge. Herein, regenerated cellulose/curcumin composite films were fabricated by dispersing hydrophobic curcumin uniformly in a hydrophilic cellulose matrix using an aqueous alkali/urea solvent based on the pH-driven principle of curcumin. In addition, a unilateral hydrophobic modification was carried out using chemical vapor deposition of methyltrichlorosilane to obtain Janus structure. The composite films exhibited high transparency in the visible light spectrum, excellent antioxidation, thermal stability, mechanical strength, gas barrier properties, and antibacterial activity. Furthermore, the films demonstrated the capability to lower the overall levels of volatile basic nitrogen in stored fish. The color of the films shifted from a pale yellow to a reddish-brown over time during storage. The composite films can be completely degraded after approximately 98 days in soil with an average environmental temperature of 29 °C. This work provided a facile strategy to prepare biodegradable cellulose/curcumin films with Janus structure as packaging materials which could preserve the freshness of food products while offering visual monitor of their freshness in real-time.
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Affiliation(s)
- Weiquan Wang
- Institute of Biological and Medical Engineering, Guangdong Academy of Sciences, Research Center for Sugarcane Industry, Engineering Technology of Light Industry, Guangzhou 510316, China; Faculty of Chemical Engineering and Light Industry, Guangdong University of Technology, Guangzhou 510006, China
| | - Xuewen Liu
- Institute of Biological and Medical Engineering, Guangdong Academy of Sciences, Research Center for Sugarcane Industry, Engineering Technology of Light Industry, Guangzhou 510316, China
| | - Fan Guo
- Faculty of Chemical Engineering and Light Industry, Guangdong University of Technology, Guangzhou 510006, China
| | - Yuxuan Yu
- Faculty of Chemical Engineering and Light Industry, Guangdong University of Technology, Guangzhou 510006, China
| | - Jinqing Lu
- Faculty of Chemical Engineering and Light Industry, Guangdong University of Technology, Guangzhou 510006, China
| | - Yiling Li
- Institute of Biological and Medical Engineering, Guangdong Academy of Sciences, Research Center for Sugarcane Industry, Engineering Technology of Light Industry, Guangzhou 510316, China
| | - Qiaoyun Cheng
- Institute of Biological and Medical Engineering, Guangdong Academy of Sciences, Research Center for Sugarcane Industry, Engineering Technology of Light Industry, Guangzhou 510316, China.
| | - Jinping Peng
- Faculty of Chemical Engineering and Light Industry, Guangdong University of Technology, Guangzhou 510006, China.
| | - Goubin Yu
- Institute of Biological and Medical Engineering, Guangdong Academy of Sciences, Research Center for Sugarcane Industry, Engineering Technology of Light Industry, Guangzhou 510316, China.
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Bonetti L, Demitri C, Riva L. Editorial on the Special Issue "Advances in Cellulose-Based Hydrogels". Gels 2022; 8:gels8120790. [PMID: 36547314 PMCID: PMC9778484 DOI: 10.3390/gels8120790] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2022] [Accepted: 11/30/2022] [Indexed: 12/12/2022] Open
Abstract
Cellulose is one of the most ubiquitous and naturally abundant biopolymers found on Earth and is primarily obtained from plants and other biomass sources [...].
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Affiliation(s)
- Lorenzo Bonetti
- Department of Chemistry, Materials and Chemical Engineering “G. Natta”, Politecnico di Milano, Via Luigi Mancinelli 7, 20131 Milan, Italy
- Correspondence: ; Tel.: +39-02-2399-4741
| | - Christian Demitri
- Department of Engineering for Innovation, Campus University Ecotekne, Università del Salento, Via per Monteroni, 73100 Lecce, Italy
| | - Laura Riva
- Department of Chemistry, Materials and Chemical Engineering “G. Natta”, Politecnico di Milano, Via Luigi Mancinelli 7, 20131 Milan, Italy
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Liu X, Zhang M, Song W, Zhang Y, Yu DG, Liu Y. Electrospun Core (HPMC-Acetaminophen)-Shell (PVP-Sucralose) Nanohybrids for Rapid Drug Delivery. Gels 2022; 8:gels8060357. [PMID: 35735701 PMCID: PMC9223299 DOI: 10.3390/gels8060357] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2022] [Revised: 06/03/2022] [Accepted: 06/04/2022] [Indexed: 02/07/2023] Open
Abstract
The gels of cellulose and its derivatives have a broad and deep application in pharmaceutics; however, limited attention has been paid to the influences of other additives on the gelation processes and their functional performances. In this study, a new type of electrospun core-shell nanohybrid was fabricated using modified, coaxial electrospinning which contained composites of hydroxypropyl methyl cellulose (HPMC) and acetaminophen (AAP) in the core sections and composites of PVP and sucralose in the shell sections. A series of characterizations demonstrated that the core-shell hybrids had linear morphology with clear core-shell nanostructures, and AAP and sucralose distributed in the core and shell section in an amorphous state separately due to favorable secondary interactions such as hydrogen bonding. Compared with the electrospun HPMC-AAP nanocomposites from single-fluid electrospinning of the core fluid, the core-shell nanohybrids were able to promote the water absorbance and HMPC gelation formation processes, which, in turn, ensured a faster release of AAP for potential orodispersible drug delivery applications. The mechanisms of the drug released from these nanofibers were demonstrated to be a combination of erosion and diffusion mechanisms. The presented protocols pave a way to adjust the properties of electrospun, cellulose-based, fibrous gels for better functional applications.
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Affiliation(s)
- Xinkuan Liu
- School of Materials & Chemistry, University of Shanghai for Science and Technology, Shanghai 200093, China; (X.L.); (M.Z.); (W.S.)
| | - Mingxin Zhang
- School of Materials & Chemistry, University of Shanghai for Science and Technology, Shanghai 200093, China; (X.L.); (M.Z.); (W.S.)
| | - Wenliang Song
- School of Materials & Chemistry, University of Shanghai for Science and Technology, Shanghai 200093, China; (X.L.); (M.Z.); (W.S.)
| | - Yu Zhang
- School of Pharmacy, Shanghai University of Medicine & Health Sciences, Shanghai 201318, China;
| | - Deng-Guang Yu
- School of Materials & Chemistry, University of Shanghai for Science and Technology, Shanghai 200093, China; (X.L.); (M.Z.); (W.S.)
- Correspondence: (D.-G.Y.); (Y.L.)
| | - Yanbo Liu
- School of Textile Science and Engineering, Wuhan Textile University, Wuhan 430200, China
- Correspondence: (D.-G.Y.); (Y.L.)
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