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Kaloper S, Plohl O, Smole Možina S, Vesel A, Šimat V, Fras Zemljič L. Exploring chitosan-plant extract bilayer coatings: Advancements in active food packaging via polypropylene modification. Int J Biol Macromol 2024; 270:132308. [PMID: 38740163 DOI: 10.1016/j.ijbiomac.2024.132308] [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: 02/05/2024] [Revised: 04/11/2024] [Accepted: 05/10/2024] [Indexed: 05/16/2024]
Abstract
UV-ozone activated polypropylene (PP) food films were subjected to a novel bilayer coating process involving primary or quaternary chitosan (CH/QCH) as the first layer and natural extracts from juniper needles (Juniperus oxycedrus; JUN) or blackberry leaves (Rubus fruticosus; BBL) as the second layer. This innovative approach aims to redefine active packaging (AP) development. Through a detailed analysis by surface characterization and bioactivity assessments (i.e., antioxidant and antimicrobial functionalities), we evaluated different coating combinations. Furthermore, we investigated the stability and barrier characteristics inherent in these coatings. The confirmed deposition, coupled with a comprehensive characterization of their composition and morphology, underscored the efficacy of the coatings. Our investigation included wettability assessment via contact angle (CA) measurements, X-ray photoelectron spectroscopy (XPS), and attenuated total reflectance Fourier-transform infrared spectroscopy (ATR-FTIR), which revealed substantial enhancements in surface concentrations of elements and functional groups of CH, QCH, JUN, and BBL. Scanning electron microscopy (SEM) unveiled the coatings' heterogeneity, while time-of-flight secondary ion mass spectrometry (ToF-SIMS) and CA profiling showed moderately compact bilayers on PP, providing active species on the hydrophilic surface, respectively. The coatings significantly reduced the oxygen permeability. Additionally, single-layer depositions of CH and QCH remained below the overall migration limit (OML). Remarkably, the coatings exhibited robust antioxidative properties due to plant extracts and exceptional antimicrobial activity against S. aureus, attributed to QCH. These findings underscore the pivotal role of film surface properties in governing bioactive characteristics and offer a promising pathway for enhancing food packaging functionality.
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Affiliation(s)
- Saša Kaloper
- University of Maribor, Faculty of Mechanical Engineering, Laboratory for Characterization and Processing of Polymers, Smetanova ulica 17, 2000 Maribor, Slovenia.
| | - Olivija Plohl
- University of Maribor, Faculty of Mechanical Engineering, Laboratory for Characterization and Processing of Polymers, Smetanova ulica 17, 2000 Maribor, Slovenia.
| | - Sonja Smole Možina
- University of Ljubljana, Biotechnical Faculty, Department of Food Science and Technology, Jamnikarjeva ulica 101, 1000 Ljubljana, Slovenia.
| | - Alenka Vesel
- Department of Surface Engineering and Optoelectronics, Jožef Stefan Institute, Teslova ulica 30, 1000 Ljubljana, Slovenia.
| | - Vida Šimat
- University Department of Marine Studies, University of Split, Ruđera Boškovića 37, 21000 Split, Croatia.
| | - Lidija Fras Zemljič
- University of Maribor, Faculty of Mechanical Engineering, Laboratory for Characterization and Processing of Polymers, Smetanova ulica 17, 2000 Maribor, Slovenia.
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2
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Huo J, Lv X, Duan Q, Jiang R, Yang D, Sun L, Li S, Qian X. Antimicrobial and hydrophobic cellulose paper prepared by covalently attaching cinnamaldehyde for strawberries preservation. Int J Biol Macromol 2024; 268:131790. [PMID: 38677693 DOI: 10.1016/j.ijbiomac.2024.131790] [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: 10/30/2023] [Revised: 04/02/2024] [Accepted: 04/21/2024] [Indexed: 04/29/2024]
Abstract
The demand for paper-based packaging materials as an alternative to incumbent disposable petroleum-derived polymers for food packaging applications is ever-growing. However, typical paper-based formats are not suitable for use in unconventional applications due to inherent limitations (e.g., excessive hydrophilicity, lack antimicrobial ability), and accordingly, enabling new capabilities is necessity. Herein, a simple and environmentally friendly strategy was proposed to introduce antimicrobial and hydrophobic functions to cellulose paper through successive chemical grafting of 3-aminopropyltriethoxysilane (APS) and cinnamaldehyde (CA). The results revealed that cellulose paper not only showed long-term antibacterial effect on different bacteria, but also inhibited a wide range of fungi. Encouragingly, the modified paper, which is fluorine-free, displays a high contact angle of 119.7°. Thus, even in the wet state, the modified paper can still maintain good mechanical strength. Meanwhile, the multifunctional composite papers have excellent biocompatibility and biodegradability. Compared with ordinary cellulose paper, multifunctional composite paper can effectively prolong the shelf life of strawberries. Therefore, the multifunctional composite paper represents good application potential as a fruit packaging material.
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Affiliation(s)
- Jiaqi Huo
- Research Division for Sustainable Papermaking & Advanced Materials, Key Laboratory of Biobased Materials Science and Technology (Ministry of Education), Northeast Forestry University, Harbin, China
| | - Xingyu Lv
- Research Division for Sustainable Papermaking & Advanced Materials, Key Laboratory of Biobased Materials Science and Technology (Ministry of Education), Northeast Forestry University, Harbin, China
| | - Qinghui Duan
- Research Division for Sustainable Papermaking & Advanced Materials, Key Laboratory of Biobased Materials Science and Technology (Ministry of Education), Northeast Forestry University, Harbin, China
| | - Ruyi Jiang
- Research Division for Sustainable Papermaking & Advanced Materials, Key Laboratory of Biobased Materials Science and Technology (Ministry of Education), Northeast Forestry University, Harbin, China
| | - Dongmei Yang
- Research Division for Sustainable Papermaking & Advanced Materials, Key Laboratory of Biobased Materials Science and Technology (Ministry of Education), Northeast Forestry University, Harbin, China; Hubei Provincial Key Laboratory of Green Materials for Light Industry, Hubei University of Technology, Wuhan, China.
| | - Lijian Sun
- College of Light Industry and Textile, Qiqihar University, Qiqihar, China.
| | - Shujun Li
- Research Division for Sustainable Papermaking & Advanced Materials, Key Laboratory of Biobased Materials Science and Technology (Ministry of Education), Northeast Forestry University, Harbin, China.
| | - Xueren Qian
- Research Division for Sustainable Papermaking & Advanced Materials, Key Laboratory of Biobased Materials Science and Technology (Ministry of Education), Northeast Forestry University, Harbin, China
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3
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Wang F, Hu Z, Ouyang S, Wang S, Liu Y, Li M, Wu Y, Li Z, Qian J, Wu Z, Zhao Z, Wang L, Jia C, Ma S. Application progress of nanocellulose in food packaging: A review. Int J Biol Macromol 2024; 268:131936. [PMID: 38692533 DOI: 10.1016/j.ijbiomac.2024.131936] [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: 02/19/2024] [Revised: 04/21/2024] [Accepted: 04/26/2024] [Indexed: 05/03/2024]
Abstract
With the increasing environmental and ecological problems caused by petroleum-based packaging materials, the focus has gradually shifted to natural resources for the preparation of functional food packaging materials. In addition to biodegradable properties, nanocellulose (NC) mechanical properties, and rich surface chemistry are also fascinating and desired to be one of the most probable green packaging materials. In this review, we firstly introduce the recent progress of novel applications of NC in food packaging, including intelligent packaging, nano(bio)sensors, and nano-paper; secondly, we focus on the modification techniques of NC to summarize the properties (antimicrobial, mechanical, hydrophobic, antioxidant, and so on) that are required for food packaging, to expand the new synthetic methods and application areas. After presenting all the latest advances related to material design and sustainable applications, an overview summarizing the safety of NC is presented to promote a continuous and healthy movement of NC toward the field of truly sustainable packaging.
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Affiliation(s)
- Feijie Wang
- Jiangsu Provincial Key Laboratory of Food Advanced Manufacturing Equipment Technology, School of Mechanical Engineering, Jiangnan University, Wuxi 214122, China
| | - Zihan Hu
- Jiangsu Provincial Key Laboratory of Food Advanced Manufacturing Equipment Technology, School of Mechanical Engineering, Jiangnan University, Wuxi 214122, China
| | - Shiqiang Ouyang
- Jiangsu Provincial Key Laboratory of Food Advanced Manufacturing Equipment Technology, School of Mechanical Engineering, Jiangnan University, Wuxi 214122, China
| | - Suyang Wang
- Jiangsu Provincial Key Laboratory of Food Advanced Manufacturing Equipment Technology, School of Mechanical Engineering, Jiangnan University, Wuxi 214122, China
| | - Yichi Liu
- Jiangsu Provincial Key Laboratory of Food Advanced Manufacturing Equipment Technology, School of Mechanical Engineering, Jiangnan University, Wuxi 214122, China
| | - Mengdi Li
- Jiangsu Provincial Key Laboratory of Food Advanced Manufacturing Equipment Technology, School of Mechanical Engineering, Jiangnan University, Wuxi 214122, China
| | - Yiting Wu
- Jiangsu Provincial Key Laboratory of Food Advanced Manufacturing Equipment Technology, School of Mechanical Engineering, Jiangnan University, Wuxi 214122, China
| | - Zhihua Li
- Jiangsu Provincial Key Laboratory of Food Advanced Manufacturing Equipment Technology, School of Mechanical Engineering, Jiangnan University, Wuxi 214122, China
| | - Jing Qian
- Jiangsu Provincial Key Laboratory of Food Advanced Manufacturing Equipment Technology, School of Mechanical Engineering, Jiangnan University, Wuxi 214122, China
| | - Zhen Wu
- Jiangsu Provincial Key Laboratory of Food Advanced Manufacturing Equipment Technology, School of Mechanical Engineering, Jiangnan University, Wuxi 214122, China
| | - Zhicheng Zhao
- College of Textile Science and Engineering, Jiangnan University, Wuxi 214122, China
| | - Liqiang Wang
- Jiangsu Provincial Key Laboratory of Food Advanced Manufacturing Equipment Technology, School of Mechanical Engineering, Jiangnan University, Wuxi 214122, China.
| | - Chao Jia
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai 201620, China.
| | - Shufeng Ma
- School of Food Science and Technology, Jiangnan University, Wuxi 214122, China.
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4
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Narciso F, Cardoso S, Monge N, Lourenço M, Martin V, Duarte N, Santos C, Gomes P, Bettencourt A, Ribeiro IAC. 3D-printed biosurfactant-chitosan antibacterial coating for the prevention of silicone-based associated infections. Colloids Surf B Biointerfaces 2023; 230:113486. [PMID: 37572399 DOI: 10.1016/j.colsurfb.2023.113486] [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: 04/18/2023] [Revised: 07/10/2023] [Accepted: 07/30/2023] [Indexed: 08/14/2023]
Abstract
Infections associated with the surfaces of medical devices represent a critical problem due to biofilm formation and the growing resistance towards antibacterial drugs. This is particularly relevant in commonly used invasive devices such as silicone-based ones where a demand for alternative antibiofilm surfaces is increasing. In this work, an antimicrobial chitosan-biosurfactant hydrogel mesh was produced by 3D-printing. The 3D structure was designed to coat polydimethylsiloxane-based medical devices for infection prevention. Additionally, the porous 3D structure allows the incorporation of customized bioactive components. For this purpose, two biosurfactants (surfactin and sophorolipids) were biosynthesized and tested for their antimicrobial activity. In addition, the printing of surfactant-chitosan-based coatings was optimized, and the resulting 3D structures were characterized (i.e., wettability, FTIR-ATR, antimicrobial activity, and biocompatibility). Compared with surfactin, the results showed a better yield and higher antibacterial activity against Gram-positive bacteria for sophorolipids (SLs). Thus, SLs were used to produce chitosan-based 3D-printed coatings. Overall, the SLs-impregnated coatings showed the best antibacterial activity against Staphylococcus aureus planktonic bacteria (61 % of growth inhibition) and antibiofilm activity (2 log units reduction) when compared to control. Furthermore, concerning biocompatibility, the coatings were cytocompatible towards human dermal fibroblasts. Finally, the coating presented a mesh suitable to be filled with a model bioactive compound (i.e., hyaluronic acid), paving the way to be used for customized therapeutics.
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Affiliation(s)
- Francisco Narciso
- Research Institute for Medicines (iMed.ULisboa), Faculty of Pharmacy, Universidade de Lisboa, Avenida Prof. Gama Pinto, 1649-003 Lisboa, Portugal; Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa, Campus de Caparica, 1829-516 Caparica, Portugal
| | - Sara Cardoso
- Research Institute for Medicines (iMed.ULisboa), Faculty of Pharmacy, Universidade de Lisboa, Avenida Prof. Gama Pinto, 1649-003 Lisboa, Portugal
| | - Nuno Monge
- Centro Interdisciplinar de Estudos Educacionais (CIED), Escola Superior de Educação de Lisboa, Instituto Politécnico de Lisboa, Campus de Benfica do IPL, 1549-003 Lisboa, Portugal
| | - Madalena Lourenço
- Research Institute for Medicines (iMed.ULisboa), Faculty of Pharmacy, Universidade de Lisboa, Avenida Prof. Gama Pinto, 1649-003 Lisboa, Portugal
| | - Victor Martin
- Laboratory for Bone Metabolism and Regeneration - Faculty of Dental Medicine, U. Porto Rua Dr. Manuel Pereira da Silva, 4200-393 Porto, Portugal; LAQV/REQUIMTE, U. Porto, Porto, 4160-007, Portugal
| | - Noélia Duarte
- Research Institute for Medicines (iMed.ULisboa), Faculty of Pharmacy, Universidade de Lisboa, Avenida Prof. Gama Pinto, 1649-003 Lisboa, Portugal
| | - Catarina Santos
- CQE Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais 1049-001, Lisboa, Portugal; EST Setúbal, CDP2T, Instituto Politécnico de Setúbal, Campus IPS, 2910 Setúbal, Portugal
| | - Pedro Gomes
- Laboratory for Bone Metabolism and Regeneration - Faculty of Dental Medicine, U. Porto Rua Dr. Manuel Pereira da Silva, 4200-393 Porto, Portugal; LAQV/REQUIMTE, U. Porto, Porto, 4160-007, Portugal
| | - Ana Bettencourt
- Research Institute for Medicines (iMed.ULisboa), Faculty of Pharmacy, Universidade de Lisboa, Avenida Prof. Gama Pinto, 1649-003 Lisboa, Portugal.
| | - Isabel A C Ribeiro
- Research Institute for Medicines (iMed.ULisboa), Faculty of Pharmacy, Universidade de Lisboa, Avenida Prof. Gama Pinto, 1649-003 Lisboa, Portugal.
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5
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Bartczak N, Kowalczyk J, Tomala R, Stefanski M, Szymański D, Ptak M, Stręk W, Szustakiewicz K, Kurzynowski T, Szczepański Ł, Junka A, Gorczyca D, Głuchowski P. Effect of the Addition of Graphene Flakes on the Physical and Biological Properties of Composite Paints. Molecules 2023; 28:6173. [PMID: 37630425 PMCID: PMC10458452 DOI: 10.3390/molecules28166173] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2023] [Revised: 08/17/2023] [Accepted: 08/18/2023] [Indexed: 08/27/2023] Open
Abstract
In this study, graphene flakes were obtained using an electrolytic method and characterized using X-ray diffraction (XRD), Raman and FTIR spectroscopy, scanning and transmission electron microscopy (SEM/TEM). Graphene-based composites with varying concentrations of 0.5%, 1% and 3% by weight were prepared with acrylic paint, enamel and varnish matrices. The mechanical properties were evaluated using micro-hardness testing, while wettability and antimicrobial activity against three pathogens (Staphylococcus aureus 33591, Pseudomonas aeruginosa 15442, Candida albicans 10231) were also examined. The results indicate that the addition of graphene flakes significantly enhances both the mechanical and antimicrobial properties of the coatings.
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Affiliation(s)
- Natalia Bartczak
- Institute of Low Temperature and Structure Research, Polish Academy of Sciences, PL-50422 Wroclaw, Poland; (J.K.); (R.T.); (M.S.); (D.S.); (M.P.); (W.S.)
- Faculty of Chemistry, Wroclaw University of Science and Technology, PL-50370 Wroclaw, Poland;
| | - Jerzy Kowalczyk
- Institute of Low Temperature and Structure Research, Polish Academy of Sciences, PL-50422 Wroclaw, Poland; (J.K.); (R.T.); (M.S.); (D.S.); (M.P.); (W.S.)
| | - Robert Tomala
- Institute of Low Temperature and Structure Research, Polish Academy of Sciences, PL-50422 Wroclaw, Poland; (J.K.); (R.T.); (M.S.); (D.S.); (M.P.); (W.S.)
| | - Mariusz Stefanski
- Institute of Low Temperature and Structure Research, Polish Academy of Sciences, PL-50422 Wroclaw, Poland; (J.K.); (R.T.); (M.S.); (D.S.); (M.P.); (W.S.)
| | - Damian Szymański
- Institute of Low Temperature and Structure Research, Polish Academy of Sciences, PL-50422 Wroclaw, Poland; (J.K.); (R.T.); (M.S.); (D.S.); (M.P.); (W.S.)
| | - Maciej Ptak
- Institute of Low Temperature and Structure Research, Polish Academy of Sciences, PL-50422 Wroclaw, Poland; (J.K.); (R.T.); (M.S.); (D.S.); (M.P.); (W.S.)
| | - Wiesław Stręk
- Institute of Low Temperature and Structure Research, Polish Academy of Sciences, PL-50422 Wroclaw, Poland; (J.K.); (R.T.); (M.S.); (D.S.); (M.P.); (W.S.)
| | - Konrad Szustakiewicz
- Faculty of Chemistry, Wroclaw University of Science and Technology, PL-50370 Wroclaw, Poland;
| | - Tomasz Kurzynowski
- Faculty of Mechanical Engineering, Wroclaw University of Science and Technology, PL-50370 Wroclaw, Poland; (T.K.); (Ł.S.)
| | - Łukasz Szczepański
- Faculty of Mechanical Engineering, Wroclaw University of Science and Technology, PL-50370 Wroclaw, Poland; (T.K.); (Ł.S.)
| | - Adam Junka
- Platform for Unique Models Application, Wroclaw Medical University, PL-50367 Wroclaw, Poland;
| | - Damian Gorczyca
- Medical Department, Lazarski University, PL-02662 Warsaw, Poland;
| | - Paweł Głuchowski
- Institute of Low Temperature and Structure Research, Polish Academy of Sciences, PL-50422 Wroclaw, Poland; (J.K.); (R.T.); (M.S.); (D.S.); (M.P.); (W.S.)
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6
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Jurko L, Makuc D, Štern A, Plavec J, Žegura B, Bošković P, Kargl R. Cytotoxicity and Antibacterial Efficacy of Betaine- and Choline-Substituted Polymers. ACS APPLIED POLYMER MATERIALS 2023; 5:5270-5279. [PMID: 37469879 PMCID: PMC10353005 DOI: 10.1021/acsapm.3c00691] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/05/2023] [Accepted: 05/30/2023] [Indexed: 07/21/2023]
Abstract
Cationic charge has been widely used to increase polymer adsorption and flocculation of dispersions or to provide antimicrobial activity. In this work, cationization of hydroxyethyl cellulose (HEC) and polyvinyl alcohol (PVA) was achieved by covalently coupling betaine hydrochloride and choline chloride to the polymer backbones through carbonyl diimidazole (CDI) activation. Two approaches for activation were investigated. CDI in excess was used to activate the polymers' hydroxyls followed by carbonate formation with choline chloride, or CDI was used to activate betaine hydrochloride, followed by ester formation with the polymers' hydroxyls. The first approach led to a more significant cross-linking of PVA, but not of HEC, and the second approach successfully formed ester bonds. Cationic, nitrogen-bearing materials with varying degrees of substitution were obtained in moderate to high yields. These materials were analyzed by Fourier transform infrared spectroscopy, nuclear magnetic resonance, polyelectrolyte titration, and kaolin flocculation. Their dose-dependent effect on the growth of Staphylococcus aureus and Pseudomonas aeruginosa, and L929 mouse fibroblasts, was investigated. Significant differences were found between the choline- and betaine-containing polymers, and especially, the choline carbonate esters of HEC strongly inhibited the growth of S. aureus in vitro but were also cytotoxic to fibroblasts. Fibroblast cytotoxicity was also observed for betaine esters of PVA but not for those of HEC. The materials could potentially be used as antimicrobial agents for instance by coating surfaces, but more investigations into the interaction between cells and polysaccharides are necessary to clarify why and how bacterial and human cells are inhibited or killed by these derivatives, especially those containing choline.
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Affiliation(s)
- Lucija Jurko
- Laboratory
for Characterization and Processing of Polymers (LCPP), Faculty of
Mechanical Engineering, University of Maribor, Smetanova Ulica 17, SI-2000 Maribor, Slovenia
| | - Damjan Makuc
- Slovenian
NMR Centre, National Institute of Chemistry, Hajdrihova 19, SI-1000 Ljubljana, Slovenia
| | - Alja Štern
- Department
of Genetic Toxicology and Cancer Biology, National Institute of Biology, Večna Pot 111, 1000 Ljubljana, Slovenia
| | - Janez Plavec
- Slovenian
NMR Centre, National Institute of Chemistry, Hajdrihova 19, SI-1000 Ljubljana, Slovenia
- EN-FIST
Centre of Excellence, Trg Osvobodilne Fronte 13, 1000 Ljubljana, Slovenia
- Faculty
of Chemistry and Chemical Technology, University
of Ljubljana, Večna
Pot 113, 1000 Ljubljana, Slovenia
| | - Bojana Žegura
- Department
of Genetic Toxicology and Cancer Biology, National Institute of Biology, Večna Pot 111, 1000 Ljubljana, Slovenia
| | - Perica Bošković
- Department
of Chemistry, Faculty of Science, University
of Split, Rud̵era Boškovića 33, 21000 Split, Croatia
| | - Rupert Kargl
- Institute
for Chemistry and Technology of Biobased System, Graz University of Technology, Stremayrgasse 9, 8010 Graz, Austria
- Laboratory
for Characterization and Processing of Polymers (LCPP), Faculty of
Mechanical Engineering, University of Maribor, Smetanova Ulica 17, SI-2000 Maribor, Slovenia
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Kokol V, Kos M, Vivod V, Gunde-Cimerman N. Cationised Fibre-Based Cellulose Multi-Layer Membranes for Sterile and High-Flow Bacteria Retention and Inactivation. MEMBRANES 2023; 13:284. [PMID: 36984670 PMCID: PMC10059598 DOI: 10.3390/membranes13030284] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/30/2023] [Revised: 02/10/2023] [Accepted: 02/21/2023] [Indexed: 06/18/2023]
Abstract
Low-cost, readily available, or even disposable membranes in water purification or downstream biopharma processes are becoming attractive alternatives to expensive polymeric columns or filters. In this article, the potential of microfiltration membranes prepared from differently orientated viscose fibre slivers, infused with ultrafine quaternised (qCNF) and amino-hydrophobised (aCNF) cellulose nanofibrils, were investigated for capturing and deactivating the bacteria from water during vacuum filtration. The morphology and capturing mechanism of the single- and multi-layer structured membranes were evaluated using microscopic imaging and colloidal particles. They were assessed for antibacterial efficacy and the retention of selected bacterial species (Escherichia coli, Staphylococcus aureus, Micrococcus luteus), differing in the cell envelope structure, hydrodynamic biovolume (shape and size) and their clustering. The aCNF increased biocidal efficacy significantly when compared to qCNF-integrated membrane, although the latter retained bacteria equally effectively by a thicker multi-layer structured membrane. The retention of bacterial cells occurred through electrostatic and hydrophobic interactions, as well as via interfibrous pore diffusion, depending on their physicochemical properties. For all bacterial strains, the highest retention (up to 100% or log 6 reduction) at >50 L/h∗bar∗m2 flow rate was achieved with a 4-layer gradient-structured membrane containing different aCNF content, thereby matching the performance of industrial polymeric filters used for removing bacteria.
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Affiliation(s)
- Vanja Kokol
- Faculty of Mechanical Engineering, Institute of Engineering Materials and Design, University of Maribor, Smetanova 17, 2000 Maribor, Slovenia
| | - Monika Kos
- Department of Biology, Biotechnical Faculty, University of Ljubljana, Jamnikarjeva 101, 1000 Ljubljana, Slovenia
| | - Vera Vivod
- Faculty of Mechanical Engineering, Institute of Engineering Materials and Design, University of Maribor, Smetanova 17, 2000 Maribor, Slovenia
| | - Nina Gunde-Cimerman
- Department of Biology, Biotechnical Faculty, University of Ljubljana, Jamnikarjeva 101, 1000 Ljubljana, Slovenia
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8
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Mahmoud SM, Ali SH, Omar MMA. Cationic cellulose nanocrystals as sustainable green material for multi biological applications via ξ potential. JOURNAL OF BIOMATERIALS SCIENCE. POLYMER EDITION 2023:1-25. [PMID: 36752027 DOI: 10.1080/09205063.2023.2177474] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/09/2023]
Abstract
The present study aims to disclose the activity of cationic cellulose nanocrystals (CNCs) as a promising multifunctional green nanomaterial with applications in biological aspects. The basic reason behind multifunctional behavior is zeta potential and size distribution of nano biopolymers; exhibit a remarkable physical and biological activity compared to normal molecules.The preliminary characterized studied using absorption spectral analysis showed strong absorption peak indicating that spectrum curves can be screen by UV spectra at wavelength range 200-400nm. Ultrastructural studies (SEM-EDS and TEM), manifest that CNCs are elliptical particles in shape. Also, TEM show CNCs are the ideal illustration of zero-dimensional (0-D) NPs, less than 5.1 nm in diameter with Cationic charge and similar results in size distribution by TEM. Nonetheless, developed as antioxidant activity IC50 was 1467 ± 25.9 µg/mL, antimicrobial activity tested G-ve strains, but not affected on tested G+ve strains and tested fungi. Evaluating toxicity effect of cationic CNCs against human blood erythrocytes (RBCs) and Lymphocyte Proliferation and the end point evaluate by comet assay, which proven no cytotoxic effect. Also, a high dose 500 µg/mL of CNCs highly significant (p < 0.05) reduction in cell viability of Caco-2 cancer cells after 24 h. incubation time, whereas the IC50 was 1884 ± 19.46 µg/mL. Moreover, genotoxic assay indicates Caco-2 cells cause apoptosis with no fragmentation in DNA. Undoubtedly, the obtained results brought about by the interaction of layers carrying opposing charges. Additionally, there is a balance between hydrophilic contact and electrostatic attraction. That emphasizes how the cationic CNCs have excellent potential for use as antioxidants, antimicrobials, and anticancer agents.
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Affiliation(s)
- Sara Mohamed Mahmoud
- Biotechnology Department, Faculty of Graduate Studies and Environmental Researches, Ain Shams University, Cairo, Egypt
| | - Safwat Hassan Ali
- Biochemistry Department, Faculty of Agriculture, Ain Shams University, Cairo, Egypt
| | - Mohamed M A Omar
- Biochemistry Department, Faculty of Agriculture, Ain Shams University, Cairo, Egypt
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9
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Du P, Xu Y, Shi Y, Xu Q, Xu Y. Amino modified cellulose fibers loaded zinc oxide nanoparticles via paper-making wet-forming for antibacterial materials. Int J Biol Macromol 2023; 227:795-804. [PMID: 36549617 DOI: 10.1016/j.ijbiomac.2022.12.145] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2022] [Revised: 12/06/2022] [Accepted: 12/14/2022] [Indexed: 12/23/2022]
Abstract
Bacterial infection has become one of the major threats to human health all over the world, and the development and application of antibacterial materials has drawn great attention. Based on the Schiff-base structure, ZnONPs@ACFs are obtained by loading zinc oxide nanoparticles (ZnONPs) on amino cellulose fibers (ACFs) in-situ through the coordination of amino groups with metal ions. The results of FT-IR, XRD and UV-vis demonstrate that ZnONPs are successfully loaded and uniformly dispersed on ACF surface, and the ACFs maintain intact morphology observed by SEM. Furthermore, the zero-span tensile strength of ZnONPs@ACFs is 66.48 N/cm (ROL: 24.98 N/cm/s) under the optimum conditions, which indicates that ZnONPs@ACFs have a certain strength and can be used to make antibacterial sheet materials via paper-making wet-forming process. Accordingly, the ZnONPs@ACF composites show inhibition zones of 4.95 mm and 1.10 mm against E. coli and S. aureus, respectively. The new cellulose-based antibacterial materials demonstrate potential applications in the field of food packaging and biological medicine etc.
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Affiliation(s)
- Peng Du
- College of Bioresources Chemical and Materials Engineering, Shaanxi Province Key Laboratory of Papermaking Technology and Specialty Paper, National Demonstration Center for Experimental Light Chemistry Engineering Education, Shaanxi University of Science & Technology, Xi'an 710021, China
| | - Yongjian Xu
- College of Bioresources Chemical and Materials Engineering, Shaanxi Province Key Laboratory of Papermaking Technology and Specialty Paper, National Demonstration Center for Experimental Light Chemistry Engineering Education, Shaanxi University of Science & Technology, Xi'an 710021, China.
| | - Yun Shi
- College of Bioresources Chemical and Materials Engineering, Shaanxi Province Key Laboratory of Papermaking Technology and Specialty Paper, National Demonstration Center for Experimental Light Chemistry Engineering Education, Shaanxi University of Science & Technology, Xi'an 710021, China
| | - Qinghua Xu
- State Key Laboratory of Biobased Material and Green Papermaking, Qilu University of Technology, Shandong Academy of Sciences, Jinan 250353, China
| | - Yang Xu
- College of Bioresources Chemical and Materials Engineering, Shaanxi Province Key Laboratory of Papermaking Technology and Specialty Paper, National Demonstration Center for Experimental Light Chemistry Engineering Education, Shaanxi University of Science & Technology, Xi'an 710021, China
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10
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Kokol V, Novak S, Kononenko V, Kos M, Vivod V, Gunde-Cimerman N, Drobne D. Antibacterial and degradation properties of dialdehyded and aminohexamethylated nanocelluloses. Carbohydr Polym 2023; 311:120603. [PMID: 37028864 DOI: 10.1016/j.carbpol.2023.120603] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2022] [Revised: 01/15/2023] [Accepted: 01/16/2023] [Indexed: 01/22/2023]
Abstract
Dialdehyde cellulose nanofibrils (CNF) and nanocrystals (CNC) were prepared via periodate oxidation (CNF/CNC-ox) and subsequently functionalized with hexamethylenediamine (HMDA) via a Schiff-base reaction, resulting in partially crosslinked micro-sized (0.5-10 μm) particles (CNF/CNC-ox-HMDA) with an aggregation and sedimentation tendency in an aqueous media, as assessed by Dynamic Light Scattering and Scanning Electron Microscopy. The antibacterial efficacy, aquatic in vivo (to Daphnia magna) and human in vitro (to A594 lung cells) toxicities, and degradation profiles in composting soil of all forms of CNF/CNC were assessed to define their safety profile. CNF/CNC-ox-HMDA exhibited higher antibacterial activity than CNF/CNC-ox and higher against Gram-positive S. aureus than Gram-negative E. coli, yielding a bacteria reduction of >90 % after 24 h of exposure at the minimum (≤2 mg/mL), but potentially moderately/aquatic and low/human toxic concentrations (≥50 mg/L). The presence of anionic, un/protonated amino-hydrophobized groups in addition to unconjugated aldehydes of hydrodynamically smaller (<1 μm) CNC-ox-HMDA increased the reduction of both bacteria to log 9 at ≥4 mg/mL and their bactericidal activity. While only CNF/CNC-ox can be considered as biosafe and up to >80 % biodegradable within 24 weeks, this process was inhibited for the CNF/CNC-ox-HMDA. This indicated their different stability, application and disposal after use (composting vs. recycling).
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Affiliation(s)
- Vanja Kokol
- University of Maribor, Faculty of Mechanical Engineering, Institute of Engineering Materials and Design, Smetanova ulica 17, 2000 Maribor, Slovenia.
| | - Sara Novak
- University of Ljubljana, Biotechnical Faculty, Department of Biology, Večna pot 111, 1000 Ljubljana, Slovenia.
| | - Veno Kononenko
- University of Ljubljana, Biotechnical Faculty, Department of Biology, Večna pot 111, 1000 Ljubljana, Slovenia.
| | - Monika Kos
- University of Ljubljana, Biotechnical Faculty, Department of Biology, Večna pot 111, 1000 Ljubljana, Slovenia.
| | - Vera Vivod
- University of Maribor, Faculty of Mechanical Engineering, Institute of Engineering Materials and Design, Smetanova ulica 17, 2000 Maribor, Slovenia.
| | - Nina Gunde-Cimerman
- University of Ljubljana, Biotechnical Faculty, Department of Biology, Večna pot 111, 1000 Ljubljana, Slovenia.
| | - Damjana Drobne
- University of Ljubljana, Biotechnical Faculty, Department of Biology, Večna pot 111, 1000 Ljubljana, Slovenia.
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11
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12
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Mérai L, Deák Á, Dékány I, Janovák L. Fundamentals and utilization of solid/ liquid phase boundary interactions on functional surfaces. Adv Colloid Interface Sci 2022; 303:102657. [PMID: 35364433 DOI: 10.1016/j.cis.2022.102657] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2022] [Revised: 03/23/2022] [Accepted: 03/24/2022] [Indexed: 12/16/2022]
Abstract
The affinity of macroscopic solid surfaces or dispersed nano- and bioparticles towards liquids plays a key role in many areas from fluid transport to interactions of the cells with phase boundaries. Forces between solid interfaces in water become especially important when the surface texture or particles are in the colloidal size range. Although, solid-liquid interactions are still prioritized subjects of materials science and therefore are extensively studied, the related literature still lacks in conclusive approaches, which involve as much information on fundamental aspects as on recent experimental findings related to influencing the wetting and other wetting-related properties and applications of different surfaces. The aim of this review is to fill this gap by shedding light on the mechanism-of-action and design principles of different, state-of-the-art functional macroscopic surfaces, ranging from self-cleaning, photoreactive or antimicrobial coatings to emulsion separation membranes, as these surfaces are gaining distinguished attention during the ongoing global environmental and epidemic crises. As there are increasing numbers of examples for stimulus-responsive surfaces and their interactions with liquids in the literature, as well, this overview also covers different external stimulus-responsive systems, regarding their mechanistic principles and application possibilities.
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13
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Kiriakou M, Pakdel AS, Berry RM, Hoare T, Dubé MA, Cranston ED. Incorporation of Polymer-Grafted Cellulose Nanocrystals into Latex-Based Pressure-Sensitive Adhesives. ACS MATERIALS AU 2022; 2:176-189. [PMID: 36855757 PMCID: PMC9888609 DOI: 10.1021/acsmaterialsau.1c00052] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
While the improvement of water-based adhesives with renewable additives is important as industry shifts toward more sustainable practices, a complete understanding of how the compatibility between additives and polymers affects adhesive performance is currently lacking. To elucidate these links, cellulose nanocrystals (CNCs) were first functionalized via surface-initiated atom-transfer radical polymerization with the hydrophobic polymers poly(butyl acrylate) (PBA) and poly(methyl methacrylate) (PMMA) to facilitate their incorporation into latex-based pressure-sensitive adhesives (PSAs). Next, PBA latexes were synthesized using seeded semibatch emulsion polymerization with unmodified or polymer-grafted CNCs added in situ at a loading of 0.5 or 1 phm (parts per hundred parts of monomer). Viscosity and electron microscopy suggested that the polymer-grafted CNCs were incorporated inside or on the latex particles. PSAs containing any CNC type had one or more improved properties (compared to the no-CNC "base case"); CNCs with a low degree of polymerization (DP) grafts exhibited improved tack (up to 2.5-fold higher) and peel strength (up to 6-fold higher) relative to PSAs with unmodified CNCs. The best performing PSA contained the low DP PMMA-grafted CNCs, which is attributed to the higher glass transition temperature and the higher wettability of the PMMA grafts compared to PBA, and the more uniform dispersion of polymer-grafted CNCs throughout the PSA film. In contrast, PSAs containing CNCs with high DP grafts resulted in reduced tack and peel strength (compared to low DP grafts) due to enhanced CNC aggregation. Unfortunately, all PSAs containing polymer-grafted CNCs exhibited inferior shear strength relative to PSAs with unmodified CNCs (and comparable shear strength to the no-CNC "base case"). Collectively, these results provide guidelines for future optimization of more sustainable latex-based PSAs.
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Affiliation(s)
- Michael
V. Kiriakou
- Department
of Chemical Engineering, McMaster University, 1280 Main Street West, Hamilton, ON L8S
4L7, Canada
| | - Amir Saeid Pakdel
- Department
of Chemical and Biological Engineering, Center for Catalysis Research
and Innovation, University of Ottawa, 161 Louis Pasteur Pvt., Ottawa, ON K1N
6N5, Canada
| | - Richard M. Berry
- CelluForce
Inc., 625 President-Kennedy
Avenue, Montreal, QC H3A 1K2, Canada
| | - Todd Hoare
- Department
of Chemical Engineering, McMaster University, 1280 Main Street West, Hamilton, ON L8S
4L7, Canada
| | - Marc A. Dubé
- Department
of Chemical and Biological Engineering, Center for Catalysis Research
and Innovation, University of Ottawa, 161 Louis Pasteur Pvt., Ottawa, ON K1N
6N5, Canada
| | - Emily D. Cranston
- Department
of Chemical Engineering, McMaster University, 1280 Main Street West, Hamilton, ON L8S
4L7, Canada
- Departments
of Wood Science, University of British Columbia, 2424 Main Mall, Vancouver, BC V6T 1Z4, Canada
- Department
of Chemical and Biological Engineering, University of British Columbia, 2360 East Mall, Vancouver, BC V6T 1Z3, Canada
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Al Nakib R, Toncheva A, Fontaine V, Vanheuverzwijn J, Raquez J, Meyer F. Thermoplastic polyurethanes for biomedical application: A synthetic, mechanical, antibacterial, and cytotoxic study. J Appl Polym Sci 2022. [DOI: 10.1002/app.51666] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Rana Al Nakib
- Laboratory of Polymeric and Composite Materials University of Mons, Faculty of Science Mons Belgium
- Microbiology, Bioorganic and Macromolecular Chemistry Unit Université Libre de Bruxelles (ULB), Faculty of Pharmacy Bruxelles Belgium
| | - Antoniya Toncheva
- Laboratory of Polymeric and Composite Materials University of Mons, Faculty of Science Mons Belgium
- Laboratory of Bioactive Polymers Institute of Polymers, Bulgarian Academy of Sciences Sofia Bulgaria
| | - Veronique Fontaine
- Microbiology, Bioorganic and Macromolecular Chemistry Unit Université Libre de Bruxelles (ULB), Faculty of Pharmacy Bruxelles Belgium
| | - Jérôme Vanheuverzwijn
- Microbiology, Bioorganic and Macromolecular Chemistry Unit Université Libre de Bruxelles (ULB), Faculty of Pharmacy Bruxelles Belgium
| | - Jean‐Marie Raquez
- Laboratory of Polymeric and Composite Materials University of Mons, Faculty of Science Mons Belgium
| | - Franck Meyer
- Microbiology, Bioorganic and Macromolecular Chemistry Unit Université Libre de Bruxelles (ULB), Faculty of Pharmacy Bruxelles Belgium
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15
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Flejszar M, Chmielarz P, Gießl M, Wolski K, Smenda J, Zapotoczny S, Cölfen H. A new opportunity for the preparation of PEEK-based bone implant materials: From SARA ATRP to photo-ATRP. POLYMER 2022. [DOI: 10.1016/j.polymer.2022.124587] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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16
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Yang X, Hou J, Tian Y, Zhao J, Sun Q, Zhou S. Antibacterial surfaces: Strategies and applications. SCIENCE CHINA. TECHNOLOGICAL SCIENCES 2022; 65:1000-1010. [PMID: 35018171 PMCID: PMC8739374 DOI: 10.1007/s11431-021-1962-x] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/21/2021] [Accepted: 11/12/2021] [Indexed: 05/11/2023]
Abstract
Antibacterial surfaces are surfaces that can resist bacteria, relying on the nature of the material itself. It is significant for safe food and water, human health, and industrial equipment. Biofilm is the main form of bacterial contamination on the material surface. Preventing the formation of biofilm is an efficient way to develop antibacterial surfaces. The strategy for constructing the antibacterial surface is divided into bacteria repelling and bacteria killing based on the formation of the biofilm. Material surface wettability, adhesion, and steric hindrance determine bacteria repelling performance. Bacteria should be killed by surface chemistry or physical structures when they are attached to a material surface irreversibly. Killing approaches are usually in the light of the cell membrane of bacteria. This review summarizes the fabrication methods and applications of antibacterial surfaces from the view of the treatment of the material surfaces. We also present several crucial points for developing long-term stability, no drug resistance, broad-spectrum, and even programable antibacterial surfaces.
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Affiliation(s)
- XiaoMeng Yang
- Key Laboratory of Advanced Technologies of Materials, Ministry of Education, School of Materials Science and Engineering, Southwest Jiaotong University, Chengdu, 610031 China
| | - JianWen Hou
- Key Laboratory of Advanced Technologies of Materials, Ministry of Education, School of Materials Science and Engineering, Southwest Jiaotong University, Chengdu, 610031 China
| | - Yuan Tian
- School of Life Science and Engineering, Southwest Jiaotong University, Chengdu, 610031 China
| | - JingYa Zhao
- Key Laboratory of Advanced Technologies of Materials, Ministry of Education, School of Materials Science and Engineering, Southwest Jiaotong University, Chengdu, 610031 China
| | - QiangQiang Sun
- Key Laboratory of Advanced Technologies of Materials, Ministry of Education, School of Materials Science and Engineering, Southwest Jiaotong University, Chengdu, 610031 China
| | - ShaoBing Zhou
- Key Laboratory of Advanced Technologies of Materials, Ministry of Education, School of Materials Science and Engineering, Southwest Jiaotong University, Chengdu, 610031 China
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17
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Zhang Z, Sèbe G, Hou Y, Wang J, Huang J, Zhou G. Grafting polymers from cellulose nanocrystals via surface‐initiated atom transfer radical polymerization. J Appl Polym Sci 2021. [DOI: 10.1002/app.51458] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- Zhen Zhang
- SCNU‐TUE Joint Lab of Device Integrated Responsive Materials (DIRM), National Center for International Research on Green Optoelectronics South China Normal University Guangzhou China
- Guangdong Provincial Key Laboratory of Optical Information Materials and Technology, Institute of Electronic Paper Displays, South China Academy of Advanced Optoelectronics South China Normal University Guangzhou China
| | - Gilles Sèbe
- Laboratoire de Chimie des Polymères Organiques University of Bordeaux, CNRS, Bordeaux INP Pessac France
| | - Yelin Hou
- Laboratoire de Chimie des Polymères Organiques University of Bordeaux, CNRS, Bordeaux INP Pessac France
| | | | - Jin Huang
- School of Chemistry and Chemical Engineering, Chongqing Key Laboratory of Soft‐Matter Material Chemistry and Function Manufacturing, and “the Belt and Road” International Joint Research Laboratory of Sustainable Materials Southwest University Chongqing China
- School of Chemistry and Chemical Engineering, and Engineering Research Center of Materials‐Oriented Chemical Engineering of Xinjiang Bintuan Shihezi University Shihezi China
| | - Guofu Zhou
- SCNU‐TUE Joint Lab of Device Integrated Responsive Materials (DIRM), National Center for International Research on Green Optoelectronics South China Normal University Guangzhou China
- Guangdong Provincial Key Laboratory of Optical Information Materials and Technology, Institute of Electronic Paper Displays, South China Academy of Advanced Optoelectronics South China Normal University Guangzhou China
- Shenzhen Guohua Optoelectronics Tech. Co. Ltd. Shenzhen China
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18
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Preparation of Antimicrobial Coatings from Cross-Linked Copolymers Containing Quaternary Dodecyl-Ammonium Compounds. Int J Mol Sci 2021; 22:ijms222413236. [PMID: 34948032 PMCID: PMC8707885 DOI: 10.3390/ijms222413236] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2021] [Revised: 12/04/2021] [Accepted: 12/06/2021] [Indexed: 11/27/2022] Open
Abstract
One of the concerns today’s societies face is the development of resistant pathogenic microorganisms. The need to tackle this problem has driven the development of innovative antimicrobial materials capable of killing or inhibiting the growth of microorganisms. The present study investigates the dependence of the antimicrobial activity and solubility properties on the hydrophilicity/hydrophobicity ratio of antimicrobial coatings based on quaternary ammonium compounds. In this line, suitable hydrophilic and hydrophobic structural units were selected for synthesizing the antimicrobial copolymers poly(4-vinylbenzyl dimethyldodecylammonium chloride-co-acrylic acid), P(VBCDDA-co-AA20) and poly(dodecyltrimethylammonium 4-styrene sulfonate-co-glycidyl methacrylate), P(SSAmC12-co-GMA20), bearing an alkyl chain of 12 carbons either through covalent bonding or through electrostatic interaction. The cross-linking reaction of the carboxylic group of acrylic acid (AA) with the epoxide group of glycidyl methacrylate (GMA) of these two series of reactive antimicrobial copolymers was explored in blends, obtained through solution casting after curing at various temperatures. The release of the final products in pure water and NaCl 1 M solutions (as analyzed by gravimetry and total organic carbon, TOC/total nitrogen, TN analyses), could be controlled by the coating composition. The cross-linked polymeric membranes of composition 60/40 w/w % ratios led to 97.8 and 99.7% mortality for Escherichia coli (E. coli) and Staphylococcus aureus (S. aureus), respectively, whereas the coating 20/80 w/w % resulted in 96.6 and 99.8% cell reduction. Despite the decrease in hydrophobicity (from a 16- to a 12-carbon alkyl chain), the new materials maintained the killing efficacy, while at the same time resulting in increased release to the aqueous solution.
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19
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Gu T, Meesrisom A, Luo Y, Dinh QN, Lin S, Yang M, Sharma A, Tang R, Zhang J, Jia Z, Millner PD, Pearlstein AJ, Zhang B. Listeria monocytogenes biofilm formation as affected by stainless steel surface topography and coating composition. Food Control 2021. [DOI: 10.1016/j.foodcont.2021.108275] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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20
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Salama A, Abouzeid R, Leong WS, Jeevanandam J, Samyn P, Dufresne A, Bechelany M, Barhoum A. Nanocellulose-Based Materials for Water Treatment: Adsorption, Photocatalytic Degradation, Disinfection, Antifouling, and Nanofiltration. NANOMATERIALS (BASEL, SWITZERLAND) 2021; 11:3008. [PMID: 34835769 PMCID: PMC8620168 DOI: 10.3390/nano11113008] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/15/2021] [Revised: 10/22/2021] [Accepted: 10/27/2021] [Indexed: 12/11/2022]
Abstract
Nanocelluloses are promising bio-nano-materials for use as water treatment materials in environmental protection and remediation. Over the past decades, they have been integrated via novel nanoengineering approaches for water treatment processes. This review aims at giving an overview of nanocellulose requirements concerning emerging nanotechnologies of waster treatments and purification, i.e., adsorption, absorption, flocculation, photocatalytic degradation, disinfection, antifouling, ultrafiltration, nanofiltration, and reverse osmosis. Firstly, the nanocellulose synthesis methods (mechanical, physical, chemical, and biological), unique properties (sizes, geometries, and surface chemistry) were presented and their use for capturing and removal of wastewater pollutants was explained. Secondly, different chemical modification approaches surface functionalization (with functional groups, polymers, and nanoparticles) for enhancing the surface chemistry of the nanocellulose for enabling the effective removal of specific pollutants (suspended particles, microorganisms, hazardous metals ions, organic dyes, drugs, pesticides fertilizers, and oils) were highlighted. Thirdly, new fabrication approaches (solution casting, thermal treatment, electrospinning, 3D printing) that integrated nanocelluloses (spherical nanoparticles, nanowhiskers, nanofibers) to produce water treatment materials (individual composite nanoparticles, hydrogels, aerogels, sponges, membranes, and nanopapers) were covered. Finally, the major challenges and future perspectives concerning the applications of nanocellulose based materials in water treatment and purification were highlighted.
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Affiliation(s)
- Ahmed Salama
- Cellulose and Paper Department, National Research Centre, 33 El-Bohouth St., Dokki, Giza 12622, Egypt; (A.S.); (R.A.)
| | - Ragab Abouzeid
- Cellulose and Paper Department, National Research Centre, 33 El-Bohouth St., Dokki, Giza 12622, Egypt; (A.S.); (R.A.)
- University of Grenoble Alpes, CNRS, Grenoble INP, LGP2, F-38000 Grenoble, France;
| | - Wei Sun Leong
- Department of Materials Science and Engineering, National University of Singapore, Singapore 117575, Singapore;
| | - Jaison Jeevanandam
- CQM—Centro de Química da Madeira, MMRG, Campus da Penteada, Universidade da Madeira, 9020-105 Funchal, Portugal;
| | - Pieter Samyn
- Institute for Materials Research (MO-IMOMEC), Applied and Analytical Chemistry, University of Hasselt, B-3590 Diepenbeek, Belgium;
| | - Alain Dufresne
- University of Grenoble Alpes, CNRS, Grenoble INP, LGP2, F-38000 Grenoble, France;
| | - Mikhael Bechelany
- Institut Européen des Membranes, IEM, UMR 5635, Univ Montpellier, CNRS, ENSCM, 34090 Montpellier, France
| | - Ahmed Barhoum
- NanoStruc Research Group, Chemistry Department, Faculty of Science, Helwan University, Cairo, Helwan 11795, Egypt
- School of Chemical Sciences, Dublin City University, Dublin 9, D09 Y074 Dublin, Ireland
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21
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Acik G. Fabrication of polypropylene fibers possessing quaternized ammonium salt based on the combination of CuAAC click chemistry and electrospinning. REACT FUNCT POLYM 2021. [DOI: 10.1016/j.reactfunctpolym.2021.105035] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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22
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Fan Y, Lu Q, Liang W, Wang Y, Zhou Y, Lang M. Preparation and characterization of antibacterial polyvinyl alcohol/chitosan sponge and potential applied for wound dressing. Eur Polym J 2021. [DOI: 10.1016/j.eurpolymj.2021.110619] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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23
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Luo H, Lan H, Cha R, Yu X, Gao P, Zhang P, Zhang C, Han L, Jiang X. Dialdehyde Nanocrystalline Cellulose as Antibiotic Substitutes against Multidrug-Resistant Bacteria. ACS APPLIED MATERIALS & INTERFACES 2021; 13:33802-33811. [PMID: 34282616 DOI: 10.1021/acsami.1c06308] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Antibiotic abuse resulted in the emergence of multidrug-resistant Gram-positive pathogens, which pose a severe threat to public health. It is urgent to develop antibiotic substitutes to kill multidrug-resistant Gram-positive pathogens effectively. Herein, the antibacterial dialdehyde nanocrystalline cellulose (DNC) was prepared and characterized. The antibacterial activity and biosafety of DNC were studied. With the increasing content of aldehyde groups, DNC exhibited high antibacterial activity against Gram-positive pathogens in vitro. DNC3 significantly reduced the amounts of methicillin-resistant Staphylococcus aureus (MRSA) on the skin of infected mice models, which showed low cytotoxicity, excellent skin compatibility, and no acute oral toxicity. DNC exhibited potentials as antibiotic substitutes to fight against multidrug-resistant bacteria, such as ingredients in salves to treat skin infection and other on-skin applications.
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Affiliation(s)
- Huize Luo
- CAS Key Lab for Biological Effects of Nanomaterials and Nanosafety, CAS Center for Excellence in Nanoscience, National Center for NanoScience and Technology, No. 11 Zhongguancun Beiyitiao, Beijing 100190, P. R. China
| | - Hai Lan
- Beijing Nano-Ace Technology Co., Ltd., Beijing 102299, P. R. China
| | - Ruitao Cha
- CAS Key Lab for Biological Effects of Nanomaterials and Nanosafety, CAS Center for Excellence in Nanoscience, National Center for NanoScience and Technology, No. 11 Zhongguancun Beiyitiao, Beijing 100190, P. R. China
| | - Xinning Yu
- The Engineering Research Center of 3D Printing and Bio-fabrication, Beijing Institute of Graphic Communication, Beijing 102600, P. R. China
| | - Pangye Gao
- CAS Key Lab for Biological Effects of Nanomaterials and Nanosafety, CAS Center for Excellence in Nanoscience, National Center for NanoScience and Technology, No. 11 Zhongguancun Beiyitiao, Beijing 100190, P. R. China
| | - Pai Zhang
- CAS Key Lab for Biological Effects of Nanomaterials and Nanosafety, CAS Center for Excellence in Nanoscience, National Center for NanoScience and Technology, No. 11 Zhongguancun Beiyitiao, Beijing 100190, P. R. China
| | - Chunliang Zhang
- CAS Key Lab for Biological Effects of Nanomaterials and Nanosafety, CAS Center for Excellence in Nanoscience, National Center for NanoScience and Technology, No. 11 Zhongguancun Beiyitiao, Beijing 100190, P. R. China
| | - Lu Han
- The Engineering Research Center of 3D Printing and Bio-fabrication, Beijing Institute of Graphic Communication, Beijing 102600, P. R. China
| | - Xingyu Jiang
- Department of Biomedical Engineering, Southern University of Science and Technology, No. 1088 Xueyuan Road, Nanshan District, Shenzhen, Guangdong 518055, P. R. China
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Kiriakou MV, Berry RM, Hoare T, Cranston ED. Effect of Reaction Media on Grafting Hydrophobic Polymers from Cellulose Nanocrystals via Surface-Initiated Atom-Transfer Radical Polymerization. Biomacromolecules 2021; 22:3601-3612. [PMID: 34252279 DOI: 10.1021/acs.biomac.1c00692] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Hydrophobic polymer-grafted cellulose nanocrystals (CNCs) were produced via surface-initiated atom-transfer radical polymerization (SI-ATRP) in two different solvents to examine the role of reaction media on the extent of surface modification. Poly(butyl acrylate)-grafted CNCs were synthesized in either dimethylformamide (DMF) (D-PBA-g-CNCs) or toluene (T-PBA-g-CNCs) alongside a free polymer from a sacrificial initiator. The colloidal stability of unmodified CNCs, initiator-modified CNCs, and PBA-g-CNCs in water, DMF, and toluene was evaluated by optical transmittance. The enhanced colloidal stability of initiator-modified CNCs in DMF led to improved accessibility to initiator groups during polymer grafting; D-PBA-g-CNCs had 30 times more grafted chains than T-PBA-g-CNCs, determined by thermogravimetric and elemental analysis. D-PBA-g-CNCs dispersed well in toluene and were hydrophobic with a water contact angle of 124° (for polymer grafts > 13 kDa) compared to 25° for T-PBA-g-CNCs. The cellulose crystal structure was preserved, and individual nanoparticles were retained when grafting was carried out in either solvent. This work highlights that optimizing CNC colloidal stability prior to grafting is more crucial than solvent-polymer compatibility to obtain high graft densities and highly hydrophobic CNCs via SI-ATRP.
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Affiliation(s)
- Michael V Kiriakou
- Department of Chemical Engineering, McMaster University, 1280 Main Street West, Hamilton, Ontario L8S 4L7, Canada
| | - Richard M Berry
- CelluForce Inc., 570 boulevard Saint-Jean, Pointe-Claire, Quebec H9R 3J9, Canada
| | - Todd Hoare
- Department of Chemical Engineering, McMaster University, 1280 Main Street West, Hamilton, Ontario L8S 4L7, Canada
| | - Emily D Cranston
- Departments of Wood Science and Chemical & Biological Engineering, University of British Columbia, Vancouver, British Columbia V6T 1Z2, Canada
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25
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Yang Y, Lu YT, Zeng K, Heinze T, Groth T, Zhang K. Recent Progress on Cellulose-Based Ionic Compounds for Biomaterials. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2021; 33:e2000717. [PMID: 32270900 DOI: 10.1002/adma.202000717] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/31/2020] [Revised: 02/25/2020] [Accepted: 02/26/2020] [Indexed: 05/06/2023]
Abstract
Glycans play important roles in all major kingdoms of organisms, such as archea, bacteria, fungi, plants, and animals. Cellulose, the most abundant polysaccharide on the Earth, plays a predominant role for mechanical stability in plants, and finds a plethora of applications by humans. Beyond traditional use, biomedical application of cellulose becomes feasible with advances of soluble cellulose derivatives with diverse functional moieties along the backbone and modified nanocellulose with versatile functional groups on the surface due to the native features of cellulose as both cellulose chains and supramolecular ordered domains as extractable nanocellulose. With the focus on ionic cellulose-based compounds involving both these groups primarily for biomedical applications, a brief introduction about glycoscience and especially native biologically active glycosaminoglycans with specific biomedical application areas on humans is given, which inspires further development of bioactive compounds from glycans. Then, both polymeric cellulose derivatives and nanocellulose-based compounds synthesized as versatile biomaterials for a large variety of biomedical applications, such as for wound dressings, controlled release, encapsulation of cells and enzymes, and tissue engineering, are separately described, regarding the diverse routes of synthesis and the established and suggested applications for these highly interesting materials.
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Affiliation(s)
- Yang Yang
- Wood Technology and Wood Chemistry, University of Goettingen, Büsgenweg 4, Göttingen, 37077, Germany
- State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Wushan Road 381, Guangzhou, 510640, P. R. China
| | - Yi-Tung Lu
- Department Biomedical Materials, Institute of Pharmacy, Martin Luther University Halle-Wittenberg, Heinrich-Damerow-Strasse 4, Halle (Saale), 06120, Germany
| | - Kui Zeng
- Wood Technology and Wood Chemistry, University of Goettingen, Büsgenweg 4, Göttingen, 37077, Germany
| | - Thomas Heinze
- Institute of Organic Chemistry and Macromolecular Chemistry, Friedrich Schiller University of Jena, Centre of Excellence for Polysaccharide Research, Humboldt Straße 10, Jena, D-07743, Germany
| | - Thomas Groth
- Department Biomedical Materials, Institute of Pharmacy, Martin Luther University Halle-Wittenberg, Heinrich-Damerow-Strasse 4, Halle (Saale), 06120, Germany
- Interdisciplinary Center of Materials Science, Martin Luther University Halle-Wittenberg, Halle (Saale), 06120, Germany
- Laboratory of Biomedical Nanotechnologies, Institute of Bionic Technologies and Engineering, I. M. Sechenov First Moscow State University, Trubetskaya Street 8, 119991, Moscow, Russian Federation
| | - Kai Zhang
- Wood Technology and Wood Chemistry, University of Goettingen, Büsgenweg 4, Göttingen, 37077, Germany
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Su Y, Li P, Gao D, Lyu B, Ma J, Zhang J, Lyu L. High-efficiency antibacterial and anti-mildew properties under self-assembly: An environmentally friendly nanocomposite. ADV POWDER TECHNOL 2021. [DOI: 10.1016/j.apt.2021.05.018] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Lin PA, Cheng CH, Hsieh KT, Lin JC. Effect of alkyl chain length and fluorine content on the surface characteristics and antibacterial activity of surfaces grafted with brushes containing quaternized ammonium and fluoro-containing monomers. Colloids Surf B Biointerfaces 2021; 202:111674. [PMID: 33690062 DOI: 10.1016/j.colsurfb.2021.111674] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2020] [Revised: 02/15/2021] [Accepted: 03/02/2021] [Indexed: 11/30/2022]
Abstract
Although considerable efforts have been made to vary the alkyl chain length in the quaternary ammonium compounds (QACs) for optimizing the antibacterial activity, only few researchers have systematically investigated the combinatory effects of alkyl chain length and another acryl monomers with the different chemical configuration on the antibacterial activity of the modified substrate. In this study, by surface grafting of various copolymeric brushes, different modified cotton substrates were prepared by surface-initiated reversible addition-fragmentation chain transfer (RAFT) polymerization reaction for exploring the effects of alkyl chain length of QACs and the fluorine content on antibacterial and anti-microbial adhesion characteristics. The quaternized monomers used were prepared by quaternization of 2-(dimethylamino) ethyl methacrylate (DMAEMA) with 1-bromooctane (DMAEMA + 8), and 1-bromopropane (DMAEMA + 3). The fluoro-containing monomer was 2,2,2-Trifluoroethyl methacrylate (TFEMA). Ethyl methacrylate (EMA) was also used for comparison. Results have shown that the optimal antibacterial and anti-microbial adhesion characteristics were noted on the substrates grafted with DMAEMA + 8 and TFEMA. This can be attributed to the enhanced degree of surface quaternization due to the hydrophobic interactions between the grafted TFEMA and DMAEMA + 8 chains, leading to an increase in antibacterial efficacy of modified cotton substrates.
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Affiliation(s)
- Po-An Lin
- Department of Chemical Engineering, National Cheng Kung University, Tainan, Taiwan
| | - Chi-Hui Cheng
- Department of Pediatrics, College of Medicine, Chang Gung University, Chang Gung Memorial Hospital, Taoyuan, Taiwan
| | - Kun-Ting Hsieh
- Department of Chemical Engineering, National Cheng Kung University, Tainan, Taiwan
| | - Jui-Che Lin
- Department of Chemical Engineering, National Cheng Kung University, Tainan, Taiwan.
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Xia Z, Zhao Y, Yang Z, Yang C, Li L, Wang S, Wang M. The simulation of droplet impact on the super-hydrophobic surface with micro-pillar arrays fabricated by laser irradiation and silanization processes. Colloids Surf A Physicochem Eng Asp 2021. [DOI: 10.1016/j.colsurfa.2020.125966] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Sun L, Zhang X, Liu H, Liu K, Du H, Kumar A, Sharma G, Si C. Recent Advances in Hydrophobic Modification of Nanocellulose. CURR ORG CHEM 2021. [DOI: 10.2174/1385272824999201210191041] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
As a kind of renewable nanomaterial, nanocellulose displays excellent performances
and exhibits wide application potentials. In general, nanocellulose has strong hydrophilicity
due to the presence of abundant hydroxyl groups or the hydrophilic functional groups
introduced during the preparation process. Although these hydrophilic groups benefit the
nanocellulose with great application potential that is used in aqueous media (e.g., rheology
modifier, hydrogels), they do hinder the performance of nanocellulose used as reinforcing
agents for hydrophobic polymers and reduce the stability of the self-assembled nanostructure
(e.g., nanopaper, aerogel) in a high-humidity environment. Thus, this review aims to summarize
recent advances in the hydrophobic modification of nanocellulose, mainly in three aspects:
physical adsorption, surface chemical modification (e.g., silylation, alkanoylation, esterification),
and polymer graft copolymerization. In addition, the current limitations and future prospects of hydrophobic
modification of nanocellulose are proposed.
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Affiliation(s)
- Lin Sun
- Tianjin Key Laboratory of Pulp and Paper, Tianjin University of Science and Technology, Tianjin 300457, China
| | - Xiaoyi Zhang
- Tianjin Key Laboratory of Pulp and Paper, Tianjin University of Science and Technology, Tianjin 300457, China
| | - Huayu Liu
- Tianjin Key Laboratory of Pulp and Paper, Tianjin University of Science and Technology, Tianjin 300457, China
| | - Kun Liu
- Tianjin Key Laboratory of Pulp and Paper, Tianjin University of Science and Technology, Tianjin 300457, China
| | - Haishun Du
- Department of Chemical Engineering, Auburn University, Auburn, AL 36849, United States
| | - Amit Kumar
- School of Chemistry, Shoolini University, Solan 173212, Himachal Pradesh, India
| | - Gaurav Sharma
- School of Chemistry, Shoolini University, Solan 173212, Himachal Pradesh, India
| | - Chuanling Si
- Tianjin Key Laboratory of Pulp and Paper, Tianjin University of Science and Technology, Tianjin 300457, China
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Li M, Fu S. Photochromic holo-cellulose wood-based aerogel grafted azobenzene derivative by SI-ATRP. Carbohydr Polym 2021; 259:117736. [PMID: 33673997 DOI: 10.1016/j.carbpol.2021.117736] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2020] [Revised: 01/10/2021] [Accepted: 01/25/2021] [Indexed: 02/02/2023]
Abstract
Wood is actually a natural polymers composite that is easy to process, mainly constituted of cellulose, hemicellulose and lignin. However, most wood-based functional materials are prepared by physical methods, which undoubtedly limit the application of wood-based materials. Herein, the wood aerogel (WA) was obtained from wood by delignification and freezing dried. The WA then was fabricated into an unexpected photochromic wood aerogel (PWA) via surface-initiated atom transfer radical polymerization (SI-ATRP) covalently grafting poly{6-[4-(4-methoxyphenyl-azo)phenoxy]hexyl methacrylate} (PMAZOM). Both WA and PWA showed good compression resilience. The hydrophobicity of PWA was obviously enhanced because of the surface modification. The color of PWA can change from yellow to orange-red after being irradiated by UV light for 30 s. The color of sample can be reversibly changed to yellow under sunlight for 200 s. The lightweight and photosensitive wood aerogel is potential to apply for optical information storage materials and photosensitive devices.
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Affiliation(s)
- Ming Li
- State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou 510640, PR China
| | - Shiyu Fu
- State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou 510640, PR China.
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Yu S, Sun J, Shi Y, Wang Q, Wu J, Liu J. Nanocellulose from various biomass wastes: Its preparation and potential usages towards the high value-added products. ENVIRONMENTAL SCIENCE AND ECOTECHNOLOGY 2021; 5:100077. [PMID: 36158608 PMCID: PMC9488076 DOI: 10.1016/j.ese.2020.100077] [Citation(s) in RCA: 46] [Impact Index Per Article: 15.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/17/2020] [Revised: 12/20/2020] [Accepted: 12/21/2020] [Indexed: 05/17/2023]
Abstract
Biomass waste comes from a wide range of sources, such as forest, agricultural, algae wastes, as well as other relevant industrial by-products. It is an important alternative energy source as well as a unique source for various bioproducts applied in many fields. For the past two decades, how to reuse, recycle and best recover various biomass wastes for high value-added bioproducts has received significant attention, which has not only come from various academia communities but also from many civil and medical industries. To summarize one of the cutting-edge technologies applied with nanocellulose biomaterials, this review focused on various preparation methods and strategies to make nanocellulose from diverse biomass wastes and their potential applications in biomedical areas and other promising new fields.
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Affiliation(s)
- Sujie Yu
- Biofuels Institute, School of the Environment and Safety Engineering, Jiangsu University, 301 Xuefu Road, 212013, Zhenjiang, China
| | - Jianzhong Sun
- Biofuels Institute, School of the Environment and Safety Engineering, Jiangsu University, 301 Xuefu Road, 212013, Zhenjiang, China
- Corresponding author.
| | - Yifei Shi
- Biofuels Institute, School of the Environment and Safety Engineering, Jiangsu University, 301 Xuefu Road, 212013, Zhenjiang, China
| | - Qianqian Wang
- Biofuels Institute, School of the Environment and Safety Engineering, Jiangsu University, 301 Xuefu Road, 212013, Zhenjiang, China
| | - Jian Wu
- Biofuels Institute, School of the Environment and Safety Engineering, Jiangsu University, 301 Xuefu Road, 212013, Zhenjiang, China
| | - Jun Liu
- Biofuels Institute, School of the Environment and Safety Engineering, Jiangsu University, 301 Xuefu Road, 212013, Zhenjiang, China
- Key Laboratory of Pulp and Paper Science & Technology of Ministry of Education, Qilu University of Technology (Shandong Academy of Sciences), 250353, Jinan, China
- Corresponding author. Biofuels Institute, School of the Environment and Safety Engineering, Jiangsu University, 301 Xuefu Road, 212013, Zhenjiang, China.
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32
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Lubis R, Wirjosentono B, Eddyanto, Septevani AA. Preparation, characterization and antimicrobial activity of grafted cellulose fiber from durian rind waste. Colloids Surf A Physicochem Eng Asp 2020. [DOI: 10.1016/j.colsurfa.2020.125311] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Acik G. Preparation of antimicrobial and biodegradable hybrid soybean oil and poly (ʟ-lactide) based polymer with quaternized ammonium salt. Polym Degrad Stab 2020. [DOI: 10.1016/j.polymdegradstab.2020.109317] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Fajstavr D, Neznalová K, Slepičková Kasálková N, Rimpelová S, Kubičíková K, Švorčík V, Slepička P. Nanostructured Polystyrene Doped with Acetylsalicylic Acid and Its Antibacterial Properties. MATERIALS (BASEL, SWITZERLAND) 2020; 13:E3609. [PMID: 32824068 PMCID: PMC7475827 DOI: 10.3390/ma13163609] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/16/2020] [Revised: 08/11/2020] [Accepted: 08/12/2020] [Indexed: 12/19/2022]
Abstract
Homogeneous polystyrene foils doped with different concentrations of acetylsalicylic acid were prepared by the solvent casting method. The surface morphology and surface chemistry of as-prepared foils were characterized in detail. Excimer laser (krypton fluoride, a wavelength of 248 nm) was used for surface nanopatterning of doped polystyrene foils. Certain combinations of laser fluence and number of laser pulses led to formation of laser-induced periodic surface structures (LIPSS) on the exposed surface. Formation of the pattern was affected by the presence of a dopant in the polystyrene structure. Significant differences in surface chemistry and morphology of laser-treated foils compared to both pristine and doped polystyrene were detected. The pattern width and height were both affected by selection of input excimer exposure conditions, and the amount of 6000 pulses was determined as optimal. The possibility of nanostructuring of a honeycomb-like pattern doped with acetylsalicylic acid was also demonstrated. Selected nanostructured surfaces were used for study the antibacterial properties for a model bacteria strain of S. aureus. The combination of altered surface chemistry and morphology of polystyrene was confirmed to have an excellent antibacterial properties.
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Affiliation(s)
- Dominik Fajstavr
- Department of Solid State Engineering, University of Chemistry and Technology Prague, 16628 Prague, Czech Republic; (D.F.); (K.N.); (N.S.K.); (K.K.); (V.Š.)
| | - Klára Neznalová
- Department of Solid State Engineering, University of Chemistry and Technology Prague, 16628 Prague, Czech Republic; (D.F.); (K.N.); (N.S.K.); (K.K.); (V.Š.)
| | - Nikola Slepičková Kasálková
- Department of Solid State Engineering, University of Chemistry and Technology Prague, 16628 Prague, Czech Republic; (D.F.); (K.N.); (N.S.K.); (K.K.); (V.Š.)
| | - Silvie Rimpelová
- Department of Biochemistry and Microbiology, University of Chemistry and Technology Prague, 16628 Prague, Czech Republic;
| | - Kateřina Kubičíková
- Department of Solid State Engineering, University of Chemistry and Technology Prague, 16628 Prague, Czech Republic; (D.F.); (K.N.); (N.S.K.); (K.K.); (V.Š.)
| | - Václav Švorčík
- Department of Solid State Engineering, University of Chemistry and Technology Prague, 16628 Prague, Czech Republic; (D.F.); (K.N.); (N.S.K.); (K.K.); (V.Š.)
| | - Petr Slepička
- Department of Solid State Engineering, University of Chemistry and Technology Prague, 16628 Prague, Czech Republic; (D.F.); (K.N.); (N.S.K.); (K.K.); (V.Š.)
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35
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Kwaśniewska D, Chen YL, Wieczorek D. Biological Activity of Quaternary Ammonium Salts and Their Derivatives. Pathogens 2020; 9:E459. [PMID: 32531904 PMCID: PMC7350379 DOI: 10.3390/pathogens9060459] [Citation(s) in RCA: 79] [Impact Index Per Article: 19.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2020] [Revised: 06/05/2020] [Accepted: 06/08/2020] [Indexed: 12/20/2022] Open
Abstract
Besides their positive role, microorganisms are related to a number of undesirable effects, including many diseases, biodeterioration and food spoilage, so when their presence is undesired, they must be controlled. Numerous biocides limiting the development of microorganisms have been proposed, however, in this paper the biocidal and inhibitory activity of quaternary ammonium salts (QASs) and their zwitterionic derivatives is addressed. This paper presents the current state of knowledge about the biocidal activity of QAS and their derivatives. Moreover, the known mechanisms of antimicrobial activity and the problem of emerging resistance to QAS are discussed. The latest trends in the study of surfactants and their potential use are also presented.
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Affiliation(s)
- Dobrawa Kwaśniewska
- Department of Technology and Instrumental Analysis, Institute of Quality Science, Poznań University of Economics and Business, 61-875 Poznań, Poland;
| | - Ying-Lien Chen
- Department of Plant Pathology and Microbiology, National Taiwan University, Taipei 100, Taiwan;
| | - Daria Wieczorek
- Department of Technology and Instrumental Analysis, Institute of Quality Science, Poznań University of Economics and Business, 61-875 Poznań, Poland;
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36
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Koufakis E, Manouras T, Anastasiadis SH, Vamvakaki M. Film Properties and Antimicrobial Efficacy of Quaternized PDMAEMA Brushes: Short vs Long Alkyl Chain Length. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2020; 36:3482-3493. [PMID: 32168453 DOI: 10.1021/acs.langmuir.9b03266] [Citation(s) in RCA: 39] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Quaternized poly(2-(dimethylamino)ethyl methacrylate) (PDMAEMA) brushes bearing quaternary ammonium groups of different alkyl chain lengths (ACLs) were prepared and assessed as biocidal coatings. For the synthesis of the antimicrobial brushes, first well-defined PDMAEMA chains were grown by surface-initiated atom transfer radical polymerization on glass and silicon substrates. Next, the tertiary amine groups of the polymer brushes were modified via a quaternization reaction, using alkyl halides, to obtain the cationic polymers. The polymer films were characterized by Fourier-transform infrared spectroscopy, ellipsometry, atomic force microscopy, and water contact angle measurements. The effect of the ACL of the quaternary ammonium groups on the physicochemical properties of the films as well as the contact killing efficiency of the surfaces against representative Gram-positive and Gram-negative bacteria was investigated. A hydrophilic to hydrophobic transition of the surfaces and a significant decrease of the degree of quaternization of the DMAEMA moieties was found upon increasing the ACL of the quaternization agent above six carbon atoms, allowing the wettability, the thickness, and the pH-response of the brushes to be tuned via a facile postpolymerization, quaternization reaction. At the same time, antimicrobial tests revealed that the hydrophilic polymer brushes exhibited enhanced bactericidal activity against Escherichia coli and Bacillus cereus, whereas the hydrophobic surfaces showed a significant deterioration of the in vitro bactericidal performance. Our results elucidate the antimicrobial action of quaternized polymer brushes, dictating the appropriate choice of the ACL of the quaternization agent for the development of coatings that effectively inhibit biofilm formation on surfaces.
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Affiliation(s)
- Eleftherios Koufakis
- Foundation for Research and Technology - Hellas, Institute of Electronic Structure and Laser, 700 13 Heraklion, Crete, Greece
- Department of Materials Science and Technology, University of Crete, 700 13 Heraklion, Crete, Greece
| | - Theodore Manouras
- Foundation for Research and Technology - Hellas, Institute of Electronic Structure and Laser, 700 13 Heraklion, Crete, Greece
| | - Spiros H Anastasiadis
- Foundation for Research and Technology - Hellas, Institute of Electronic Structure and Laser, 700 13 Heraklion, Crete, Greece
- Department of Chemistry, University of Crete, 700 13 Heraklion, Crete, Greece
| | - Maria Vamvakaki
- Foundation for Research and Technology - Hellas, Institute of Electronic Structure and Laser, 700 13 Heraklion, Crete, Greece
- Department of Materials Science and Technology, University of Crete, 700 13 Heraklion, Crete, Greece
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37
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De Jesús‐Téllez MA, Sánchez‐Cerrillo DM, Quintana‐Owen P, Schubert US, Contreras‐López D, Guerrero‐Sánchez C. Kinetic Investigations of Quaternization Reactions of Poly[2‐(dimethylamino)ethyl methacrylate] with Diverse Alkyl Halides. MACROMOL CHEM PHYS 2020. [DOI: 10.1002/macp.201900543] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Affiliation(s)
- Marco A. De Jesús‐Téllez
- Centro de Investigación y de Estudios Avanzados del IPN (CINVESTAV) Unidad Mérida A.P. 73, Cordemex Mérida Yucatán 97310 Mexico
- Laboratory of Organic and Macromolecular Chemistry (IOMC)Friedrich Schiller University Jena Humboldtstrasse 10 Jena 07743 Germany
| | - Dulce M. Sánchez‐Cerrillo
- Departamento de Ingeniería QuímicaDivisión de Ciencias Naturales y ExactasUniversidad de Guanajuato Noria Alta Guanajuato Guanajuato 36050 Mexico
| | - Patricia Quintana‐Owen
- Centro de Investigación y de Estudios Avanzados del IPN (CINVESTAV) Unidad Mérida A.P. 73, Cordemex Mérida Yucatán 97310 Mexico
| | - Ulrich S. Schubert
- Laboratory of Organic and Macromolecular Chemistry (IOMC)Friedrich Schiller University Jena Humboldtstrasse 10 Jena 07743 Germany
- Jena Center of Soft Matter (JCSM)Friedrich Schiller University Jena Philosophenweg 7 Jena 07743 Germany
| | - David Contreras‐López
- Departamento de Ingeniería QuímicaDivisión de Ciencias Naturales y ExactasUniversidad de Guanajuato Noria Alta Guanajuato Guanajuato 36050 Mexico
| | - Carlos Guerrero‐Sánchez
- Laboratory of Organic and Macromolecular Chemistry (IOMC)Friedrich Schiller University Jena Humboldtstrasse 10 Jena 07743 Germany
- Jena Center of Soft Matter (JCSM)Friedrich Schiller University Jena Philosophenweg 7 Jena 07743 Germany
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38
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Tavakolian M, Jafari SM, van de Ven TGM. A Review on Surface-Functionalized Cellulosic Nanostructures as Biocompatible Antibacterial Materials. NANO-MICRO LETTERS 2020; 12:73. [PMID: 34138290 PMCID: PMC7770792 DOI: 10.1007/s40820-020-0408-4] [Citation(s) in RCA: 92] [Impact Index Per Article: 23.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/06/2019] [Accepted: 02/06/2020] [Indexed: 05/07/2023]
Abstract
As the most abundant biopolymer on the earth, cellulose has recently gained significant attention in the development of antibacterial biomaterials. Biodegradability, renewability, strong mechanical properties, tunable aspect ratio, and low density offer tremendous possibilities for the use of cellulose in various fields. Owing to the high number of reactive groups (i.e., hydroxyl groups) on the cellulose surface, it can be readily functionalized with various functional groups, such as aldehydes, carboxylic acids, and amines, leading to diverse properties. In addition, the ease of surface modification of cellulose expands the range of compounds which can be grafted onto its structure, such as proteins, polymers, metal nanoparticles, and antibiotics. There are many studies in which cellulose nano-/microfibrils and nanocrystals are used as a support for antibacterial agents. However, little is known about the relationship between cellulose chemical surface modification and its antibacterial activity or biocompatibility. In this study, we have summarized various techniques for surface modifications of cellulose nanostructures and its derivatives along with their antibacterial and biocompatibility behavior to develop non-leaching and durable antibacterial materials. Despite the high effectiveness of surface-modified cellulosic antibacterial materials, more studies on their mechanism of action, the relationship between their properties and their effectivity, and more in vivo studies are required.
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Affiliation(s)
- Mandana Tavakolian
- Department of Chemical Engineering, McGill University, Montreal, QC, H3A 0C5, Canada
- Pulp and Paper Research Center, McGill University, Montreal, QC, H3A 0C7, Canada
- Quebec Centre for Advanced Materials (QCAM/CQMF), Montreal, Canada
| | - Seid Mahdi Jafari
- Department of Food Materials and Process Design Engineering, Gorgan University of Agricultural Science and Natural Resources, Gorgan, Iran.
| | - Theo G M van de Ven
- Pulp and Paper Research Center, McGill University, Montreal, QC, H3A 0C7, Canada.
- Quebec Centre for Advanced Materials (QCAM/CQMF), Montreal, Canada.
- Department of Chemistry, McGill University, Montreal, QC, H3A 0B8, Canada.
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39
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Oai K, Inoue Y, Nakao A, Fukazawa K, Ishihara K. Antibacterial effect of nanometer‐size grafted layer of quaternary ammonium polymer on poly(ether ether ketone) substrate. J Appl Polym Sci 2020. [DOI: 10.1002/app.49088] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Keiko Oai
- Department of Materials Engineering, School of EngineeringThe University of Tokyo Tokyo Japan
| | - Yuuki Inoue
- Department of Materials Engineering, School of EngineeringThe University of Tokyo Tokyo Japan
| | | | - Kyoko Fukazawa
- Department of Materials Engineering, School of EngineeringThe University of Tokyo Tokyo Japan
| | - Kazuhiko Ishihara
- Department of Materials Engineering, School of EngineeringThe University of Tokyo Tokyo Japan
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40
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Light-induced shape-memory polyurethane composite film containing copper sulfide nanoparticles and modified cellulose nanocrystals. Carbohydr Polym 2020; 230:115676. [DOI: 10.1016/j.carbpol.2019.115676] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2019] [Revised: 11/24/2019] [Accepted: 11/25/2019] [Indexed: 01/22/2023]
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41
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Teper P, Chojniak-Gronek J, Hercog A, Oleszko-Torbus N, Płaza G, Kubacki J, Balin K, Kowalczuk A, Mendrek B. Nanolayers of Poly( N, N'-Dimethylaminoethyl Methacrylate) with a Star Topology and Their Antibacterial Activity. Polymers (Basel) 2020; 12:E230. [PMID: 31963443 PMCID: PMC7023597 DOI: 10.3390/polym12010230] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2019] [Revised: 01/10/2020] [Accepted: 01/15/2020] [Indexed: 12/14/2022] Open
Abstract
In this paper, we focus on the synthesis and characterization of novel stable nanolayers made of star methacrylate polymers. The effect of nanolayer modification on its antibacterial properties was also studied. A covalent immobilization of star poly(N,N'-dimethylaminoethyl methacrylate) (PDMAEMA) to benzophenone functionalized glass or silicon supports was carried out via a "grafting to" approach using UV irradiation. To date, star polymer UV immobilization has never been used for this purpose. The thickness of the resulting nanolayers increased from 30 to 120 nm with the molar mass of the immobilized stars. The successful bonding of star PDMAEMA to the supports was confirmed by surface sensitive quantitative spectroscopic methods. Next, amino groups in the polymer layer were quaternized with bromoethane, and the influence of this modification on the antibacterial properties of the obtained materials was analyzed using a selected reference strain of bacteria. The resulting star nanolayer surfaces exhibited higher antimicrobial activity against Bacillus subtilis ATCC 6633 compared to that of the linear PDMAEMA analogues grafted onto a support. These promising results and the knowledge about the influence of the topology and modification of PDMAEMA layers on their properties may help in searching for new materials for antimicrobial applications in medicine.
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Affiliation(s)
- Paulina Teper
- Centre of Polymer and Carbon Materials, Polish Academy of Sciences, M. Curie-Sklodowskiej 34, 41-819 Zabrze, Poland; (P.T.); (A.H.); (N.O.-T.); (A.K.)
| | - Joanna Chojniak-Gronek
- Institute for Ecology of Industrial Areas, Kossutha 6, 40-844 Katowice, Poland; (J.C.-G.); (G.P.)
| | - Anna Hercog
- Centre of Polymer and Carbon Materials, Polish Academy of Sciences, M. Curie-Sklodowskiej 34, 41-819 Zabrze, Poland; (P.T.); (A.H.); (N.O.-T.); (A.K.)
| | - Natalia Oleszko-Torbus
- Centre of Polymer and Carbon Materials, Polish Academy of Sciences, M. Curie-Sklodowskiej 34, 41-819 Zabrze, Poland; (P.T.); (A.H.); (N.O.-T.); (A.K.)
| | - Grażyna Płaza
- Institute for Ecology of Industrial Areas, Kossutha 6, 40-844 Katowice, Poland; (J.C.-G.); (G.P.)
| | - Jerzy Kubacki
- A. Chelkowski Institute of Physics, University of Silesia, Uniwersytecka 4, 40-007 Katowice, Poland; (J.K.); (K.B.)
- Silesian Center for Education and Interdisciplinary Research, 75 Pulku Piechoty 1A, 41-500 Chorzów, Poland
| | - Katarzyna Balin
- A. Chelkowski Institute of Physics, University of Silesia, Uniwersytecka 4, 40-007 Katowice, Poland; (J.K.); (K.B.)
- Silesian Center for Education and Interdisciplinary Research, 75 Pulku Piechoty 1A, 41-500 Chorzów, Poland
| | - Agnieszka Kowalczuk
- Centre of Polymer and Carbon Materials, Polish Academy of Sciences, M. Curie-Sklodowskiej 34, 41-819 Zabrze, Poland; (P.T.); (A.H.); (N.O.-T.); (A.K.)
| | - Barbara Mendrek
- Centre of Polymer and Carbon Materials, Polish Academy of Sciences, M. Curie-Sklodowskiej 34, 41-819 Zabrze, Poland; (P.T.); (A.H.); (N.O.-T.); (A.K.)
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Kong L, Zhang M, Zhang Y, Zhang W, Zhou X, Zhang L, Wang X. Influence of the interfacial molecular structures of quaternary ammonium-type poly(ionic liquid) brushes on their antibacterial properties. Polym Chem 2020. [DOI: 10.1039/d0py01153c] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Alkyl chains of C4 are more active in killing bacteria than C16 due to their orderly extension toward PBS solution.
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Affiliation(s)
- Lingli Kong
- Department of Chemistry
- School of Science
- Zhejiang Sci-Tech University
- Hangzhou 310018
- China
| | - Ming Zhang
- Department of Chemistry
- School of Science
- Zhejiang Sci-Tech University
- Hangzhou 310018
- China
| | - Yan Zhang
- Department of Chemistry
- School of Science
- Zhejiang Sci-Tech University
- Hangzhou 310018
- China
| | - Wei Zhang
- Department of Chemistry
- School of Science
- Zhejiang Sci-Tech University
- Hangzhou 310018
- China
| | - Xianjing Zhou
- Department of Chemistry
- School of Science
- Zhejiang Sci-Tech University
- Hangzhou 310018
- China
| | - Li Zhang
- Department of Chemistry
- School of Science
- Zhejiang Sci-Tech University
- Hangzhou 310018
- China
| | - Xinping Wang
- Department of Chemistry
- School of Science
- Zhejiang Sci-Tech University
- Hangzhou 310018
- China
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Sun B, Zhang Y, Li W, Xu X, Zhang H, Zhao Y, Lin J, Sun D. Facile synthesis and light-induced antibacterial activity of ketoprofen functionalized bacterial cellulose membranes. Colloids Surf A Physicochem Eng Asp 2019. [DOI: 10.1016/j.colsurfa.2019.01.051] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Banerjee SL, Potluri P, Singha NK. Antimicrobial cotton fibre coated with UV cured colloidal natural rubber latex: A sustainable material. Colloids Surf A Physicochem Eng Asp 2019. [DOI: 10.1016/j.colsurfa.2019.01.018] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Zheng X, Fu S. Reconstructing micro/nano hierarchical structures particle with nanocellulose for superhydrophobic coatings. Colloids Surf A Physicochem Eng Asp 2019. [DOI: 10.1016/j.colsurfa.2018.10.005] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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Liu X, Li M, Zheng X, Retulainen E, Fu S. Dual Light- and pH-Responsive Composite of Polyazo-Derivative Grafted Cellulose Nanocrystals. MATERIALS (BASEL, SWITZERLAND) 2018; 11:E1725. [PMID: 30223462 PMCID: PMC6165044 DOI: 10.3390/ma11091725] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/09/2018] [Revised: 09/08/2018] [Accepted: 09/10/2018] [Indexed: 11/16/2022]
Abstract
As a type of functional group, azo-derivatives are commonly used to synthesize responsive materials. Cellulose nanocrystals (CNCs), prepared by acid hydrolysis of cotton, were dewatered and reacted with 2-bromoisobuturyl bromide to form a macro-initiator, which grafted 6-[4-(4-methoxyphenyl-azo) phenoxy] hexyl methacrylate (MMAZO) via atom transfer radical polymerization. The successful grafting was supported by Fourier transform infrared spectroscopy (FT-IR) and Solid magnetic resonance carbon spectrum (MAS 13C-NMR). The morphology and surface composition of the poly{6-[4-(4-methoxyphenylazo) phenoxy] hexyl methacrylate} (PMMAZO)-grafted CNCs were confirmed with Transmission electron microscopy (TEM) and X-ray photoelectron spectroscopy (XPS). The grafting rate on the macro-initiator of CNCs was over 870%, and the polydispersities of branched polymers were narrow. The crystal structure of CNCs did not change after grafting, as determined by X-ray diffraction (XRD). The polymer PMMAZO improved the thermal stability of cellulose nanocrystals, as shown by thermogravimetry analysis (TGA). Then the PMMAZO-grafted CNCs were mixed with polyurethane and casted to form a composite film. The film showed a significant light and pH response, which may be suitable for visual acid-alkali measurement and reversible optical storage.
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Affiliation(s)
- Xiaohong Liu
- State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou 510640, China.
| | - Ming Li
- State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou 510640, China.
| | - Xuemei Zheng
- State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou 510640, China.
| | - Elias Retulainen
- State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou 510640, China.
| | - Shiyu Fu
- State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou 510640, China.
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