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Parveen N, Singh H, Vanapalli KR, Goel S. Leaching of organic matter from cigarette butt filters as a potential disinfection by-products precursor. JOURNAL OF HAZARDOUS MATERIALS 2024; 476:134976. [PMID: 38917631 DOI: 10.1016/j.jhazmat.2024.134976] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/06/2024] [Revised: 06/07/2024] [Accepted: 06/18/2024] [Indexed: 06/27/2024]
Abstract
The study aimed to evaluate cigarette butt filters (CBFs) as a potential source of dissolved organic carbon (DOC) in water leading to the formation of disinfection by-products. Two different forms of CBFs - intact (I) and disintegrated (D), as they occur in the environment, were selected for leaching in chlorinated (CI, CD), non-chlorinated (NI, ND), and highly chlorinated (HCD) water samples. The UV absorbance profiles of the leachate samples showed that intact CBFs exhibited higher DOC leaching compared to the disintegrated ones, which was further accentuated in chlorinated samples (CI > CD > NI > ND). The Fourier Transform Infrared spectra of the leachates revealed the presence of characteristic functional groups of cellulose acetate and its chlorinated derivatives, indicating the potential degradation of the polymer. Moreover, trihalomethane (THM) formation in chlorinated samples was relatively higher in CI samples (2 - 11.5 times) compared to CD, consistent with the DOC leaching trends. Further, the speciation characteristics of different THMs in both CI and CD samples were similar. Although spectral and morphological analyzes of CI and CD samples revealed negligible variation, HCD samples depicted significant surface roughness characterized by the formation of pits and holes, along with the evolution of crystallinity. This suggested accelerated degradation of CBFs and disruption of acetyl groups as a factor of elevated chlorine concentrations.
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Affiliation(s)
- Naseeba Parveen
- School of Environmental Science and Engineering, Indian Institute of Technology Kharagpur, West Bengal 721302, India; Civil Engineering Department, National Institute of Technology Mizoram, Aizawl 796012, India
| | - Hemant Singh
- School of Environmental Science and Engineering, Indian Institute of Technology Kharagpur, West Bengal 721302, India; Civil Engineering Department, Galgotias University, Greater Noida, Uttar Pradesh 203201, India
| | - Kumar Raja Vanapalli
- Civil Engineering Department, National Institute of Technology Mizoram, Aizawl 796012, India.
| | - Sudha Goel
- School of Environmental Science and Engineering, Indian Institute of Technology Kharagpur, West Bengal 721302, India; Civil Engineering Department, Indian Institute of Technology Kharagpur, West Bengal 721302, India
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2
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Zhang M, Liu S, Gao X, Jiang X, Zhang E, Fan H, Zhu S. Highly flexible carbon nitride-polyethylene glycol-cellulose acetate film with photocatalytic antibacterial activity for fruit preservation. Int J Biol Macromol 2024; 266:131161. [PMID: 38547947 DOI: 10.1016/j.ijbiomac.2024.131161] [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: 11/14/2023] [Revised: 03/21/2024] [Accepted: 03/25/2024] [Indexed: 04/02/2024]
Abstract
Cellulose acetate film, as a biodegradable and biomass-derived material, has great potential applications in food packaging. However, the poor mechanical and antibacterial properties limit its applications. Herein, a highly flexible carbon nitride-polyethylene glycol-cellulose acetate (CN-PEG-CA) film was successfully prepared by combining graphitic carbon nitride (g-C3N4) photocatalyst with cellulose acetate (CA). The g-C3N4 enables the film with antibacterial activity, as a green photocatalyst. PEG softens the rigid polymer CA and crosslinks CA, PEG, and g-C3N4 together by hydrogen bonding, as a flexible crosslinker. X-ray diffractometer (XRD), scanning electron microscope (SEM), and Fourier transform infrared spectrum (FT-IR) characterizations confirmed the successful preparation of the CN-PEG-CA film. The mechanical property tests demonstrated that adding PEG increased the elongation at break of the film by about 4 times. The composite film had high antibacterial activity, and the bactericidal rates on Escherichia coli and Staphylococcus aureus were 99.98 % and 99.89 %, respectively. It effectively extended the shelf life of strawberries to 96 h and effectively maintained the quality of strawberries during storage. After 96 h, the weight loss rate of strawberries packaged with 15 % CN-PEG-CA film was 21.83 %, vitamin C content was 45.47 %, titratable acidity content was 0.89 %, and color, hardness and total soluble solids were well maintained. And biocompatibility test results showed that the film was safe and nontoxic. From the ecological and economic point of view, the highly flexible and biodegradable films with efficient photocatalytic antibacterial activity synthesized in this paper have great potential in the field of food packaging.
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Affiliation(s)
- Mengting Zhang
- College of Chemistry and Material Science, Shandong Agricultural University, Taian 271018, Shandong, PR China
| | - Shujun Liu
- College of Chemistry and Material Science, Shandong Agricultural University, Taian 271018, Shandong, PR China
| | - Xianqiang Gao
- College of Chemistry and Material Science, Shandong Agricultural University, Taian 271018, Shandong, PR China
| | - Xiaokang Jiang
- College of Chemistry and Material Science, Shandong Agricultural University, Taian 271018, Shandong, PR China
| | - Enze Zhang
- College of Chemistry and Material Science, Shandong Agricultural University, Taian 271018, Shandong, PR China
| | - Hai Fan
- College of Chemistry and Material Science, Shandong Agricultural University, Taian 271018, Shandong, PR China.
| | - Shuhua Zhu
- College of Chemistry and Material Science, Shandong Agricultural University, Taian 271018, Shandong, PR China.
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Jia H, Jimbo K, Yokochi H, Otsuka H, Michinobu T. Self-healing and shape-memory polymers based on cellulose acetate matrix. SCIENCE AND TECHNOLOGY OF ADVANCED MATERIALS 2024; 25:2320082. [PMID: 38455385 PMCID: PMC10919307 DOI: 10.1080/14686996.2024.2320082] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/21/2023] [Accepted: 02/13/2024] [Indexed: 03/09/2024]
Abstract
The creation of self-healing polymers with superior strength and stretchability from biodegradable materials is attracting increasing attention. In this study, we synthesized new biomass-derived cellulose acetate (CA) derivatives by ring-opening graft polymerization of δ-valerolactone followed by the introduction of ureidopyrimidinone (Upy) groups in the polymer side chains. Due to the semicrystalline aliphatic characteristics of the side chain poly(δ-valerolactone) (PVL) and quadruple hydrogen bonds formed by the Upy groups, the stretchability of the resulting polymers was significantly enhanced. Moreover, the shape memory ability and self-healing property (58.3% of self-healing efficiency) were successfully imparted to the polymer. This study demonstrates the great significance of using biomass sources to create self-healing polymers.
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Affiliation(s)
- Han Jia
- Department of Materials Science and Engineering, Tokyo Institute of Technology, Meguroku, Tokyo, Japan
| | - Keiya Jimbo
- Department of Materials Science and Engineering, Tokyo Institute of Technology, Meguroku, Tokyo, Japan
| | - Hirogi Yokochi
- Department of Chemical Science and Engineering, Tokyo Institute of Technology, Meguroku, Tokyo, Japan
| | - Hideyuki Otsuka
- Department of Chemical Science and Engineering, Tokyo Institute of Technology, Meguroku, Tokyo, Japan
| | - Tsuyoshi Michinobu
- Department of Materials Science and Engineering, Tokyo Institute of Technology, Meguroku, Tokyo, Japan
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Yang D, Liu Q, Zeng X, Chen X, Li M, Wu X, Liu Y, Zheng Y, Xiang J, Wang C, Weng W, Zhang Y. Novel pH-responsive indicator films based on bromothymol blue-anchored chitin for shrimp freshness monitoring. Int J Biol Macromol 2023; 253:127052. [PMID: 37748590 DOI: 10.1016/j.ijbiomac.2023.127052] [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: 06/07/2023] [Revised: 09/13/2023] [Accepted: 09/22/2023] [Indexed: 09/27/2023]
Abstract
The cellulose nanofibers (CNFs) based pH-sensitive indicator films were developed by mixing guar gum (GG) with bromothymol blue-anchored chitin (BTB-Chitin) as an indicator to monitor shrimp freshness. The BTB-Chitin was prepared by grafting hydroxypropyltriethylamine groups (HPTA) to chitin first, then anchoring bromothymol blue (BTB) to prepare intelligent pH response BTB-Chitin. The 0.08 BTB-Chitin films had a good tensile strength of 11.76 MPa and the water contact angle values were 125°, which displayed obvious color response to pH buffers and acid base volatile gas. Besides, the homogeneous and flexible composite films showed good color stability and reversibility. The released amount of BTB was very low from the BTB-Chitin films in heptane and corn oil. The composite films had been degraded completely in 15 days in soil. The pH and volatile base nitrogen were measured to determine the degree decay of shrimp (Litopenaeus vannamei), and the prepared pH-sensitive films changed from yellow (fresh) to cyan (spoiled) with the freshness of shrimp decreased, indicating the BTB-Chitin films could detect the shrimp freshness in real-time and high visibility.
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Affiliation(s)
- Danmin Yang
- College of Ocean Food and Biological Engineering, Jimei University, Xiamen 361021, China
| | - Qun Liu
- College of Ocean Food and Biological Engineering, Jimei University, Xiamen 361021, China.
| | - Xu Zeng
- State Key Laboratory of Pulp and Paper Engineering, School of Light Industry and Engineering, South China University of Technology, Guangzhou 510640, China
| | - Xiaoting Chen
- College of Ocean Food and Biological Engineering, Jimei University, Xiamen 361021, China; Fisheries Research Institute of Fujian, Xiamen 361021, China
| | - Meng Li
- College of Ocean Food and Biological Engineering, Jimei University, Xiamen 361021, China
| | - Xialing Wu
- College of Ocean Food and Biological Engineering, Jimei University, Xiamen 361021, China
| | - Yue Liu
- College of Ocean Food and Biological Engineering, Jimei University, Xiamen 361021, China
| | - Yanzhen Zheng
- College of Ocean Food and Biological Engineering, Jimei University, Xiamen 361021, China
| | - Jionghua Xiang
- College of Ocean Food and Biological Engineering, Jimei University, Xiamen 361021, China
| | - Chunchun Wang
- College of Ocean Food and Biological Engineering, Jimei University, Xiamen 361021, China
| | - Wuyin Weng
- College of Ocean Food and Biological Engineering, Jimei University, Xiamen 361021, China
| | - Yucang Zhang
- College of Ocean Food and Biological Engineering, Jimei University, Xiamen 361021, China.
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Hashemian H, Ghaedi M, Dashtian K, Mosleh S, Hajati S, Razmjoue D, Khan S. Cellulose acetate/MOF film-based colorimetric ammonia sensor for non-destructive remote monitoring of meat product spoilage. Int J Biol Macromol 2023; 249:126065. [PMID: 37524273 DOI: 10.1016/j.ijbiomac.2023.126065] [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: 12/23/2022] [Revised: 06/30/2023] [Accepted: 07/28/2023] [Indexed: 08/02/2023]
Abstract
Herein, we designed an on-site and portable colorimetric assay using cellulose acetate polymeric films incorporated with HKUST-1 metal-organic framework while immersed in a solution of methyl red and brilliant cresyl blue organic dyes as an indicator for monitoring ammonia levels. Ammonia serves as a significant biomarker of food spoilage which falls under the category of volatile organic compounds (VOCs). The designed colorimetric solid-state sensor was comprehensively characterized using FE-SEM, EDS-mapping, XRD, FTIR, and contact angle analyses. The results confirmed the superior stability, water permeability, good crystallinity and desirable morphology of the prepared sensor platform. Additionally, customized smartphone was developed and applied for online signaling and colorimetric analysis. The findings demonstrated two linear ranges: 1-100 ppb and 0.1-1340 ppm with a detection limit of 0.02 ppm. The solid-state sensor exhibited high selectivity in the presence of other VOCs such as methanol, ethanol, acetone, 2-propanol, toluene, humidity, and hexane. It displayed acceptable repeatability in both inter-day (RSD = 3.38 %) and intraday (RSD = 3.86 %), long-term stability over 4 days as well as reusability over 3 cycles. We successfully applied this sensing platform for ammonia monitoring in spoiled meat foods including veal, fish and chicken. The results indicated favorable percentage recovery and repeatability, confirming the feasibility and potential applicability of this intelligent packaging system for monitoring freshness. The platform allows for real-time monitoring and data analysis via smartphone-based online signaling, providing a convenient and effective method for ensuring food quality.
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Affiliation(s)
| | - Mehrorang Ghaedi
- Chemistry Department, Yasouj University, Yasouj 75918-74831, Iran.
| | - Kheibar Dashtian
- Department of Chemistry, Iran University of Science and Technology, Tehran, Iran.
| | - Soleiman Mosleh
- Polymer Engineering Department, Faculty of Gas and Petroleum, Yasouj University, Gachsaran, Iran
| | - Shaaker Hajati
- Department of Semiconductors, Materials and Energy Research Center (MERC), P.O. Box 31787-316, Tehran, Iran
| | - Damoun Razmjoue
- Medicinal Plants Research Center, Yasuj University of Medical Sciences, Yasuj, Iran
| | - Sikandar Khan
- Department of Chemistry, University of Malakand, Chakdara, Khyber Pakhtunkhwa, Pakistan
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Meng X, Cai C, Luo B, Liu T, Shao Y, Wang S, Nie S. Rational Design of Cellulosic Triboelectric Materials for Self-Powered Wearable Electronics. NANO-MICRO LETTERS 2023; 15:124. [PMID: 37166487 PMCID: PMC10175533 DOI: 10.1007/s40820-023-01094-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/03/2023] [Accepted: 04/05/2023] [Indexed: 05/12/2023]
Abstract
With the rapid development of the Internet of Things and flexible electronic technologies, there is a growing demand for wireless, sustainable, multifunctional, and independently operating self-powered wearable devices. Nevertheless, structural flexibility, long operating time, and wearing comfort have become key requirements for the widespread adoption of wearable electronics. Triboelectric nanogenerators as a distributed energy harvesting technology have great potential for application development in wearable sensing. Compared with rigid electronics, cellulosic self-powered wearable electronics have significant advantages in terms of flexibility, breathability, and functionality. In this paper, the research progress of advanced cellulosic triboelectric materials for self-powered wearable electronics is reviewed. The interfacial characteristics of cellulose are introduced from the top-down, bottom-up, and interfacial characteristics of the composite material preparation process. Meanwhile, the modulation strategies of triboelectric properties of cellulosic triboelectric materials are presented. Furthermore, the design strategies of triboelectric materials such as surface functionalization, interfacial structure design, and vacuum-assisted self-assembly are systematically discussed. In particular, cellulosic self-powered wearable electronics in the fields of human energy harvesting, tactile sensing, health monitoring, human-machine interaction, and intelligent fire warning are outlined in detail. Finally, the current challenges and future development directions of cellulosic triboelectric materials for self-powered wearable electronics are discussed.
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Affiliation(s)
- Xiangjiang Meng
- School of Light Industry and Food Engineering, Guangxi University, Nanning, 530004, People's Republic of China
| | - Chenchen Cai
- School of Light Industry and Food Engineering, Guangxi University, Nanning, 530004, People's Republic of China
| | - Bin Luo
- School of Light Industry and Food Engineering, Guangxi University, Nanning, 530004, People's Republic of China
| | - Tao Liu
- School of Light Industry and Food Engineering, Guangxi University, Nanning, 530004, People's Republic of China
| | - Yuzheng Shao
- School of Light Industry and Food Engineering, Guangxi University, Nanning, 530004, People's Republic of China
| | - Shuangfei Wang
- School of Light Industry and Food Engineering, Guangxi University, Nanning, 530004, People's Republic of China
| | - Shuangxi Nie
- School of Light Industry and Food Engineering, Guangxi University, Nanning, 530004, People's Republic of China.
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7
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Kida D, Konopka T, Jurczyszyn K, Karolewicz B. Technological Aspects and Evaluation Methods for Polymer Matrices as Dental Drug Carriers. Biomedicines 2023; 11:biomedicines11051274. [PMID: 37238944 DOI: 10.3390/biomedicines11051274] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2023] [Revised: 04/17/2023] [Accepted: 04/20/2023] [Indexed: 05/28/2023] Open
Abstract
The development of polymer matrices as dental drug carriers takes into account the following technological aspects of the developed formulations: the composition and the technology used to manufacture them, which affect the properties of the carriers, as well as the testing methods for assessing their behavior at application sites. The first part of this paper characterizes the methods for fabricating dental drug carriers, i.e., the solvent-casting method (SCM), lyophilization method (LM), electrospinning (ES) and 3D printing (3DP), describing the selection of technological parameters and pointing out both the advantages of using the mentioned methods and their limitations. The second part of this paper describes testing methods to study the formulation properties, including their physical and chemical, pharmaceutical, biological and in vivo evaluation. Comprehensive in vitro evaluation of carrier properties permits optimization of formulation parameters to achieve prolonged retention time in the dynamic oral environment and is essential for explaining carrier behavior during clinical evaluation, consequently enabling the selection of the optimal formulation for oral application.
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Affiliation(s)
- Dorota Kida
- Department of Drug Form Technology, Wroclaw Medical University, Borowska 211 A, 50-556 Wroclaw, Poland
| | - Tomasz Konopka
- Department of Periodontology, Wroclaw Medical University, Krakowska 26, 50-425 Wroclaw, Poland
| | - Kamil Jurczyszyn
- Department of Dental Surgery, Faculty of Medicine and Dentistry, Medical University of Wroclaw, Krakowska 26, 50-425 Wroclaw, Poland
| | - Bożena Karolewicz
- Department of Drug Form Technology, Wroclaw Medical University, Borowska 211 A, 50-556 Wroclaw, Poland
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8
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Todorov AR, King AWT, Kilpeläinen I. Transesterification of cellulose with unactivated esters in superbase-acid conjugate ionic liquids. RSC Adv 2023; 13:5983-5992. [PMID: 36816067 PMCID: PMC9936960 DOI: 10.1039/d2ra08186e] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2022] [Accepted: 02/13/2023] [Indexed: 02/19/2023] Open
Abstract
A sustainable homogeneous transesterification protocol utilizing the superbase ionic liquid [mTBNH][OAc] and unactivated methyl esters has been developed for the preparation of cellulose esters with controllable degree of substitution. [mTBNH][OAc] shows excellent recyclability with a high recovery of sufficient purity for repeated use. This reaction media allows for cellulose transesterification reactions not only using activated or cyclic esters, but also with unactivated methyl esters, which extends the substrate and application scope. Furthermore, the solubility properties of the prepared cellulose materials were tested and some intrinsic trends were observed at low degrees of substitution.
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Affiliation(s)
- Aleksandar R Todorov
- Materials Chemistry Division, Department of Chemistry, University of Helsinki FI-00560 Helsinki Finland
| | - Alistair W T King
- Materials Chemistry Division, Department of Chemistry, University of Helsinki FI-00560 Helsinki Finland
- VTT Technical Research Centre of Finland Ltd Tietotie 4e 02150 Espoo Finland
| | - Ilkka Kilpeläinen
- Materials Chemistry Division, Department of Chemistry, University of Helsinki FI-00560 Helsinki Finland
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9
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Aryloxy Ionic Liquid-Catalyzed Homogenous Esterification of Cellulose with Low-Reactive Acyl Donors. Polymers (Basel) 2023; 15:polym15020419. [PMID: 36679299 PMCID: PMC9860810 DOI: 10.3390/polym15020419] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2022] [Revised: 01/06/2023] [Accepted: 01/10/2023] [Indexed: 01/15/2023] Open
Abstract
Ionic liquids (ILs) are recyclable, non-volatile, and can dissolve cellulose, a natural polymer that is insoluble in versatile solvents. Therefore, ILs have been used to modify cellulose. However, 1-ethyl-3-methylimidazolium acetate (EmimOAc), a commercially available IL often used to dissolve and modify cellulose to prepare cellulose-based materials, causes the undesired introduction of an acetyl group derived from the acetate anion of EmimOAc onto the hydroxy group of cellulose during esterification. In this study, for cellulose esterification, we prepared aryloxy ILs as non-carboxylate-type and basic ILs, which can theoretically prevent the undesired introduction of an acyl group from the IL onto the hydroxy group of cellulose. The optimized 1-ethyl-3-methylimidazolium 2-pyridinolate (Emim2OPy) and mixed solvent system achieved rapid cellulose esterification (within 30 min) with an excellent degree of substitution (DS) value (up to >2.9) derived from the employed low-reactive vinyl esters and bio-based unsaturated aldehydes, without any undesired substituent introduction from side reactions.
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Attari N, Hausler R. Reinforcing Effects of Fibrous and Crystalline Nanocelluloses on Cellulose Acetate Membranes. CARBOHYDRATE POLYMER TECHNOLOGIES AND APPLICATIONS 2023. [DOI: 10.1016/j.carpta.2023.100281] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023] Open
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11
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Synthesis and Characterization of Cellulose Diacetate-Graft-Polylactide via Solvent-Free Melt Ring-Opening Graft Copolymerization. Polymers (Basel) 2022; 15:polym15010143. [PMID: 36616493 PMCID: PMC9824652 DOI: 10.3390/polym15010143] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2022] [Revised: 12/19/2022] [Accepted: 12/23/2022] [Indexed: 12/31/2022] Open
Abstract
Cellulose diacetate (CDA) and L-lactide (L-LA) were used to prepare CDA-g-PLLA with a low glass transition temperature under different process conditions. Given the high glass transition temperature (Tg) of CDA, the thermal processing performance of CDA is poor, which greatly limits its application fields. To decrease the Tg of CDA, graft copolymerization was used in this research. A CDA-g-PLLA graft copolymer was synthesized by grafting CDA with L-LA under different reaction conditions using stannous octanoate as the catalyst and variations in the grafting rate under different reaction conditions were compared. The chemical structure and crystal structure of the CDA-g-PLLA were investigated, and thermal properties were also studied. The results showed that the grafting rate was the highest at the L-LA/CDA mass ratio of 4:1 under a reaction temperature of 150 °C for 90 min, and no poly-L-lactide (PLLA) homopolymer was found among the CDA-g-PLLA graft copolymers after purification. The Tg of CDA-g-PLLA was 54.2 °C, and the initial temperature of weightlessness of CDA-g-PLLA was 218.7 °C. The regularity of the original CDA molecular chains was destroyed after grafting PLLA molecular chains. In this research, we investigated the optimal grafting conditions for CDA-g-PLLA and the CDA-g-PLLA had a low Tg, which improves the thermal processing performance of CDA and broadens its application prospects in the industry.
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Heise K, Koso T, King AWT, Nypelö T, Penttilä P, Tardy BL, Beaumont M. Spatioselective surface chemistry for the production of functional and chemically anisotropic nanocellulose colloids. JOURNAL OF MATERIALS CHEMISTRY. A 2022; 10:23413-23432. [PMID: 36438677 PMCID: PMC9664451 DOI: 10.1039/d2ta05277f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/01/2022] [Accepted: 09/27/2022] [Indexed: 06/16/2023]
Abstract
Maximizing the benefits of nanomaterials from biomass requires unique considerations associated with their native chemical and physical structure. Both cellulose nanofibrils and nanocrystals are extracted from cellulose fibers via a top-down approach and have significantly advanced materials chemistry and set new benchmarks in the last decade. One major challenge has been to prepare defined and selectively modified nanocelluloses, which would, e.g., allow optimal particle interactions and thereby further improve the properties of processed materials. At the molecular and crystallite level, the surface of nanocelluloses offers an alternating chemical structure and functional groups of different reactivity, enabling straightforward avenues towards chemically anisotropic and molecularly patterned nanoparticles via spatioselective chemical modification. In this review, we will explain the influence and role of the multiscale hierarchy of cellulose fibers in chemical modifications, and critically discuss recent advances in selective surface chemistry of nanocelluloses. Finally, we will demonstrate the potential of those chemically anisotropic nanocelluloses in materials science and discuss challenges and opportunities in this field.
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Affiliation(s)
- Katja Heise
- Department of Bioproducts and Biosystems, Aalto University P.O. Box 16300 FI-00076 Aalto Espoo Finland
| | - Tetyana Koso
- Materials Chemistry Division, Chemistry Department, University of Helsinki FI-00560 Helsinki Finland
| | - Alistair W T King
- VTT Technical Research Centre of Finland Ltd., Biomaterial Processing and Products 02044 Espoo Finland
| | - Tiina Nypelö
- Chalmers University of Technology 41296 Gothenburg Sweden
- Wallenberg Wood Science Center, Chalmers University of Technology 41296 Gothenburg Sweden
| | - Paavo Penttilä
- Department of Bioproducts and Biosystems, Aalto University P.O. Box 16300 FI-00076 Aalto Espoo Finland
| | - Blaise L Tardy
- Khalifa University, Department of Chemical Engineering Abu Dhabi United Arab Emirates
- Center for Membrane and Advanced Water Technology, Khalifa University Abu Dhabi United Arab Emirates
- Research and Innovation Center on CO2 and Hydrogen, Khalifa University Abu Dhabi United Arab Emirates
| | - Marco Beaumont
- Institute of Chemistry of Renewable Resources, Department of Chemistry, University of Natural Resources and Life Sciences Vienna (BOKU), Konrad-Lorenz-Str. 24 A-3430 Tulln Austria
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13
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Hazarika KK, Konwar A, Borah A, Saikia A, Barman P, Hazarika S. Cellulose nanofiber mediated natural dye based biodegradable bag with freshness indicator for packaging of meat and fish. Carbohydr Polym 2022; 300:120241. [DOI: 10.1016/j.carbpol.2022.120241] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2022] [Revised: 10/12/2022] [Accepted: 10/15/2022] [Indexed: 11/02/2022]
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14
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Tsioptsias C, Foukas GRP, Papaioannou SM, Tzimpilis E, Tsivintzelis I. On the Thermochemical Transition Depression of Cellulose Acetate Composite Membranes. Polymers (Basel) 2022; 14:polym14163434. [PMID: 36015691 PMCID: PMC9416459 DOI: 10.3390/polym14163434] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2022] [Revised: 08/18/2022] [Accepted: 08/19/2022] [Indexed: 11/16/2022] Open
Abstract
Gallic acid (GA) and quercetin (QU) are two important bioactive molecules with increased biomedical interest. Cellulose acetate (CA) is a polymer derived from cellulose and is used in various applications. In this work, differential scanning calorimetry (DSC), thermogravimetric analysis (TGA) and Fourier transform infrared spectroscopy (FTIR) were used to study the thermal behavior of electrospun CA membranes loaded with quercetin or gallic acid. It was found that gallic acid and quercetin depress the thermochemical transition (simultaneous softening and decomposition) of CA, in a mechanism similar to that of the glass transition depression of amorphous polymers by plasticizers. The extensive hydrogen bonding, besides the well-known effect of constraining polymer's softening by keeping macromolecules close to each other, has a secondary effect on the thermochemical transition, i.e., it weakens chemical bonds and, inevitably, facilitates decomposition. This second effect of hydrogen bonding can provide an explanation for an unexpected observation of this study: CA membranes loaded with quercetin or gallic acid soften at lower temperatures; however, at the same time, they decompose to a higher extent than pure CA. Besides optimization of CA processing, the fundamental understanding of the thermochemical transition depression could lead to the design of more sustainable processes for biomass recycling and conversion.
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Cellulose Acetate Nanofibers: Incorporating Hydroxyapatite (HA), HA/Berberine or HA/Moghat Composites, as Scaffolds to Enhance In Vitro Osteoporotic Bone Regeneration. Polymers (Basel) 2021; 13:polym13234140. [PMID: 34883645 PMCID: PMC8659966 DOI: 10.3390/polym13234140] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2021] [Revised: 11/19/2021] [Accepted: 11/21/2021] [Indexed: 12/19/2022] Open
Abstract
The specific objective of this study was to stabilize a simple valid method to prepare pure nanorod hydroxyapatite (HA) mixed with berberine chloride (BER) and Moghat water extract (ME) as composites for incorporation into cellulose acetate (CA) nanofibers to be used as novel bone scaffolds and to determine their efficacy in bone regeneration process In Vitro. Preparation of HA/BER and HA/ME composites were performed by mixing powders using the ball-milling machine. The HA, HA/BER, and HA/ME composites at a concentration of 6.25, 12.5, 25, 50, 100, and 200 mg were mixed with CA solution (13%), then the fiber was formed using electrospinning technique. The properties of the obtained CA fibers were investigated (SEM, TEM, EDX, FTIR, TGA, water uptake, porosity, and mechanical tests). The efficacy of HA and HA composites loaded into CA nanofiber on osteoblast and osteoclast differentiation were measured by tacking ALP, osteocalcin, TRAcP, calcium, and total protein concentration. Moreover, their effects on cell differentiation (CD90 and PARP- ɣ) and death markers (GSK3b, MAPK, Wnt-5 and β-catenin) were evaluated by using ELISA and qPCR. The obtained TEM results indicated that the continuous CA and CA/HA composites electrospun fibers have ultrafine fiber diameters of about 200 nm and uniform distribution of discrete n-HA clusters throughout. In addition, hydrocortisone (HCT) was found to increase the formation of adipocytes and osteoclastic markers CD90 and p38-MAPK which indicated the bone lose process take placed. Treatment with CA loaded with HA, HA/BER or HA/ME decreased CD90, Wnt-5, PARP- ɣ, GSK3b and p38-MAPK associated elevation of osteogenic markers: ALP and osteocalcin. Moreover, HCT overexpressed RANKL and down expressed Osterix gene. Treatment with CA/HA/BER or CA/HA/ME downregulated RANKL and upregulated Osterix associated with a reduction in RANKL/OPG ratio, at p < 0.05. In conclusion, novel CA composite nanofibers (CA/HA/BER and CA/HA/ME) reversed the HCT adverse effect on osteoblast cell death through canonical and non-canonical pathways regulated by Wnt/β-catenin and Wnt/Ca(2+) pathways. Furthermore, our data confirmed that the novel scaffolds create a crosstalk between RUNX-2, RANKL, p38-MAPK, and Wnt signals which positively impact bone regeneration process. Treatment with CA/HA/BER is better compared to the treatment with CA/HA/ME. Nevertheless, both are considered as alternative biomaterial scaffolds with a potential for biomedical applications in the field of bone tissue engineering.
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