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Sadeghi M, Habibi Y, Bohlool T, Mohamadnia Z, Nikfarjam N, Norouzi M. Fabrication of a self-healing hydrogel with antibacterial activity using host-guest interactions between dopamine-modified alginate and β-cyclodextrin dimer. Int J Biol Macromol 2024; 273:132827. [PMID: 38834128 DOI: 10.1016/j.ijbiomac.2024.132827] [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: 10/21/2023] [Revised: 05/09/2024] [Accepted: 05/30/2024] [Indexed: 06/06/2024]
Abstract
Self-healing hydrogels possess an ability to recover their functionality after experiencing damage by regenerating cross-links. The main challenge in making self-healing hydrogels based on host-guest (HG) interactions is their limited mechanical strength, which can be solved using beta-cyclodextrin dimers (β-CDsD). Here, β-CDsD as a host cross-linker was used to increase the mechanical property of the HG interactions. Alginate with acceptable biocompatibility was modified by dopamine (ALG-DOP) and employed as a guest polymer. Self-healing hydrogel was developed between them, and Ag nanoparticles were added to create an antibacterial activity. Dopamine with appropriate size and suitable adhesiveness established HG interactions with β-CDsD, and cells were able to grow well on hydrogel. This hydrogel showed an impressive self-healing capability <5 min. These hydrogels revealed a respectable porosity from 15 to 55 μm essential for exchanging the substances required for cell growth and cell waste elimination. Biocompatibility was investigated against NIH 3 T3 fibroblasts cells, and the results showed that the cells grew well. The in vitro release of curcumin from the hydrogel was examined in PBS at pH of 7.4. The hydrogel can be a perfect candidate for controlled drug release, and wound-dressing due to self-healing property, antibacterial activity, adhesion, and biocompatibility.
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Affiliation(s)
- Moslem Sadeghi
- Department of Chemistry, Institute for Advanced Studies in Basic Science (IASBS), Gava Zang, Zanjan, 45137-66731, Iran
| | - Younes Habibi
- Department of Chemistry, Institute for Advanced Studies in Basic Science (IASBS), Gava Zang, Zanjan, 45137-66731, Iran
| | - Tohid Bohlool
- Department of Chemistry, Institute for Advanced Studies in Basic Science (IASBS), Gava Zang, Zanjan, 45137-66731, Iran
| | - Zahra Mohamadnia
- Department of Chemistry, Institute for Advanced Studies in Basic Science (IASBS), Gava Zang, Zanjan, 45137-66731, Iran.
| | - Nasser Nikfarjam
- Department of Chemistry, Institute for Advanced Studies in Basic Science (IASBS), Gava Zang, Zanjan, 45137-66731, Iran; Department of Chemical Engineering, College of Engineering and Computing, University of South Carolina, Columbia, SC 29208, United States.
| | - Mastaneh Norouzi
- Department of Chemistry, Faculty of Science, University of Zanjan, P.O. Box 45195-313, Zanjan, Iran
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Lv J, Li Z, Dong R, Xue Y, Wang Y, Li Q. Highly flame-retardant materials of different divalent metal ions alginate/silver phosphate: Synthesis, characterizations, and synergistic phosphorus-polymetallic effects. Int J Biol Macromol 2023; 247:125834. [PMID: 37453641 DOI: 10.1016/j.ijbiomac.2023.125834] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2023] [Revised: 07/01/2023] [Accepted: 07/12/2023] [Indexed: 07/18/2023]
Abstract
Three kinds of divalent metal ions (Ca2+, Cu2+, Zn2+) alginate/silver phosphate (MAlg/Ag3PO4) hybrid materials were prepared via an in-situ method, and the composites were characterized by X-ray diffractometry (XRD), X-ray photoelectron spectroscopy (XPS), scanning electron microscopy (SEM), and Fourier transform infrared spectrum (FTIR). To investigate their flame-retardant properties and phosphorus-polymetallic flame-retardant effects, the combustion behavior and flammability of the composites were assessed by using the thermogravimetric analysis (TGA), limiting oxygen index (LOI) and micro-calorimeter tests (MCC). The results show that the three composites were thermally stable, among which the LOI of CaAlg/Ag3PO4, CuAlg/Ag3PO4 and ZnAlg/Ag3PO4 were 62.6 %, 46.5 % and 79.8 %, respectively, which were much higher than the prescribed flame retardants which was 27 %. According to the TGA, the thermal stability was ZnAlg/Ag3PO4 > CaAlg/Ag3PO4 > CuAlg/Ag3PO4. The heat release capacity (HRC) of the above three materials was 49 J/(g·K), 69 J/(g·K), 41 J/(g·K), respectively, and the fire safety performance was also in the same order as the thermal stability. By using the thermogravimetric analysis coupled with Fourier transform infrared analysis (TG-FTIR) and pyrolysis-gas chromatography-mass spectrometry (Py-GC/MS), the flame retarding mechanism of MAlg/Ag3PO4 and the synergistic effect of Ag3PO4 and divalent metal ions were proposed based on the experimental data.
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Affiliation(s)
- Jintai Lv
- College of Chemistry and Chemical Engineering, Qingdao University, Qingdao 266071, China
| | - Zichao Li
- Institute of Biomedical Engineering, College of Life Sciences, Qingdao University, Qingdao 266071, China
| | - Ruitao Dong
- College of Chemistry and Chemical Engineering, Qingdao University, Qingdao 266071, China
| | - Yun Xue
- College of Chemistry and Chemical Engineering, Qingdao University, Qingdao 266071, China
| | - Yanwei Wang
- College of Chemistry and Chemical Engineering, Qingdao University, Qingdao 266071, China
| | - Qun Li
- College of Chemistry and Chemical Engineering, Qingdao University, Qingdao 266071, China.
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3
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Huang S, Zou S, Wang Y. Construction of compostable packaging with antibacterial property and improved performance using sprayed coatings of modified cellulose nanocrystals. Carbohydr Polym 2023; 305:120539. [PMID: 36737191 DOI: 10.1016/j.carbpol.2023.120539] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2022] [Revised: 12/29/2022] [Accepted: 01/01/2023] [Indexed: 01/05/2023]
Abstract
Increasing concerns about food safety and the environment have facilitated the development of eco-friendly antibacterial packaging. This study aimed to demonstrate a facile way to fabricate active packaging materials with modified cellulose nanocrystals (CNCs) and compare the effects of different modified CNCs on the performance of compostable materials. Polylactic acid (PLA) film was selected as a model, and CNCs were modified with methacrylamide, cetyltrimethylammonium bromide, and zinc oxide, respectively, and then applied on the surface of PLA films by spray-coating. All modified CNCs showed excellent antibacterial activity against S. aureus and E. coli (>99.999 %). The effects of different CNC modifications on the performance of PLA films were investigated. Compared to neat PLA films, PLA/CNC films exhibited improved mechanical strength with maintained flexibility, lower gas permeability, and faster compost disintegration rate, and extended the shelf life of wrapped pork samples from 3 days to >10 days. Therefore, this work will also facilitate the applications of PLA materials in eco-friendly packaging.
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Affiliation(s)
- Shuting Huang
- Department of Food Science and Agricultural Chemistry, McGill University, Ste Anne de Bellevue, Quebec H9X 3V9, Canada
| | - Sheng Zou
- Department of Food Science and Agricultural Chemistry, McGill University, Ste Anne de Bellevue, Quebec H9X 3V9, Canada
| | - Yixiang Wang
- Department of Food Science and Agricultural Chemistry, McGill University, Ste Anne de Bellevue, Quebec H9X 3V9, Canada.
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Guo X, Zhao H, Qiang X, Ouyang C, Wang Z, Huang D. Facile construction of agar-based fire-resistant aerogels: A synergistic strategy via in situ generations of magnesium hydroxide and cross-linked Ca-alginate. Int J Biol Macromol 2023; 227:297-306. [PMID: 36549030 DOI: 10.1016/j.ijbiomac.2022.12.164] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2022] [Revised: 12/13/2022] [Accepted: 12/15/2022] [Indexed: 12/24/2022]
Abstract
Biomass-based aerogel materials have many advantages, such as low thermal conductivity and non-toxicity. These materials are environmentally friendly and have broad development potential in the fields of packaging, cushioning and green building insulation. However, defects, such as low mechanical strength and poor fire safety, greatly limit the application of these materials. In this work, the agar/polyvinyl alcohol composite aerogel modified by the magnesium hydroxide (MH)/sodium alginate (SA) composite flame retardant system was developed by using a freeze-dried technology and the strategy of in-situ generation of MH and crosslinking of SA. The results showed that the MH/SA dramatically enhanced the mechanical and thermal stability of the composites. The compression modulus of AP-M35S15 was 2.37 MPa, which was 152.13 % higher than that of AP-M50. The limiting oxygen index value of AP-M35S15 was 34.1 % and reached V-0 level in the vertical burning test, which was better than those of the samples with a single MH effect. The cone calorimetric test showed that the MH/SA composite flame retardant system performed better in extending the ignition time, slowing down the heat release rate and reducing the total heat release and had a more complete dense carbon structure after burning.
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Affiliation(s)
- Xin Guo
- School of Material Science and Engineering, Lanzhou Jiaotong University, Lanzhou 730070, PR China
| | - Hong Zhao
- School of Material Science and Engineering, Lanzhou Jiaotong University, Lanzhou 730070, PR China
| | - Xiaohu Qiang
- School of Material Science and Engineering, Lanzhou Jiaotong University, Lanzhou 730070, PR China
| | - Chengwei Ouyang
- School of Material Science and Engineering, Lanzhou Jiaotong University, Lanzhou 730070, PR China
| | - Zhehui Wang
- School of Material Science and Engineering, Lanzhou Jiaotong University, Lanzhou 730070, PR China
| | - Dajian Huang
- School of Material Science and Engineering, Lanzhou Jiaotong University, Lanzhou 730070, PR China.
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Puccetti M, Donnadio A, Ricci M, Latterini L, Quaglia G, Pietrella D, Di Michele A, Ambrogi V. Alginate Ag/AgCl Nanoparticles Composite Films for Wound Dressings with Antibiofilm and Antimicrobial Activities. J Funct Biomater 2023; 14:jfb14020084. [PMID: 36826883 PMCID: PMC9968148 DOI: 10.3390/jfb14020084] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2022] [Revised: 01/23/2023] [Accepted: 01/29/2023] [Indexed: 02/05/2023] Open
Abstract
Recently, silver-based nanoparticles have been proposed as components of wound dressings due to their antimicrobial activity. Unfortunately, they are cytotoxic for keratinocytes and fibroblasts, and this limits their use. Less consideration has been given to the use of AgCl nanoparticles in wound dressings. In this paper, a sustainable preparation of alginate AgCl nanoparticles composite films by simultaneous alginate gelation and AgCl nanoparticle formation in the presence of CaCl2 solution is proposed with the aim of obtaining films with antimicrobial and antibiofilm activities and low cytotoxicity. First, AgNO3 alginate films were prepared, and then, gelation and nanoparticle formation were induced by film immersion in CaCl2 solution. Films characterization revealed the presence of both AgCl and metallic silver nanoparticles, which resulted as quite homogeneously distributed, and good hydration properties. Finally, films were tested for their antimicrobial and antibiofilm activities against Staphylococcus epidermidis (ATCC 12228), Staphylococcus aureus (ATCC 29213), Pseudomonas aeruginosa (ATCC 15692), and the yeast Candida albicans. Composite films showed antibacterial and antibiofilm activities against the tested bacteria and resulted as less active towards Candida albicans. Film cytotoxicity was investigated towards human dermis fibroblasts (HuDe) and human skin keratinocytes (NCTC2544). Composite films showed low cytotoxicity, especially towards fibroblasts. Thus, the proposed sustainable approach allows to obtain composite films of Ag/AgCl alginate nanoparticles capable of preventing the onset of infections without showing high cytotoxicity for tissue cells.
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Affiliation(s)
- Matteo Puccetti
- Dipartimento di Scienze Farmaceutiche, Università degli Studi di Perugia, Via del Liceo 1, 06123 Perugia, Italy
| | - Anna Donnadio
- Dipartimento di Scienze Farmaceutiche, Università degli Studi di Perugia, Via del Liceo 1, 06123 Perugia, Italy
| | - Maurizio Ricci
- Dipartimento di Scienze Farmaceutiche, Università degli Studi di Perugia, Via del Liceo 1, 06123 Perugia, Italy
| | - Loredana Latterini
- Nano4Light Lab, Dipartimento di Chimica, Biologia e Biotecnologie, Università degli Studi di Perugia, Via Elce di Sotto, 8, 06123 Perugia, Italy
| | - Giulia Quaglia
- Nano4Light Lab, Dipartimento di Chimica, Biologia e Biotecnologie, Università degli Studi di Perugia, Via Elce di Sotto, 8, 06123 Perugia, Italy
| | - Donatella Pietrella
- Dipartimento di Medicina e Chirurgia, Università degli Studi di Perugia, Via Piazzale Gambuli, 1, 06129 Perugia, Italy
| | - Alessandro Di Michele
- Dipartimento di Fisica e Geologia, Università degli Studi di Perugia, Via Pascoli, 06123 Perugia, Italy
| | - Valeria Ambrogi
- Dipartimento di Scienze Farmaceutiche, Università degli Studi di Perugia, Via del Liceo 1, 06123 Perugia, Italy
- Correspondence: ; Tel.: +39-0755855125
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Berglund L, Nissilä T, Sivaraman D, Komulainen S, Telkki VV, Oksman K. Seaweed-Derived Alginate-Cellulose Nanofiber Aerogel for Insulation Applications. ACS APPLIED MATERIALS & INTERFACES 2021; 13:34899-34909. [PMID: 34255967 PMCID: PMC8323098 DOI: 10.1021/acsami.1c07954] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/29/2021] [Accepted: 07/01/2021] [Indexed: 05/07/2023]
Abstract
The next generation of green insulation materials is being developed to provide safer and more sustainable alternatives to conventional materials. Bio-based cellulose nanofiber (CNF) aerogels offer excellent thermal insulation properties; however, their high flammability restricts their application. In this study, the design concept for the development of a multifunctional and non-toxic insulation material is inspired by the natural composition of seaweed, comprising both alginate and cellulose. The approach includes three steps: first, CNFs were separated from alginate-rich seaweed to obtain a resource-efficient, fully bio-based, and inherently flame-retardant material; second, ice-templating, followed by freeze-drying, was employed to form an anisotropic aerogel for effective insulation; and finally, a simple crosslinking approach was applied to improve the flame-retardant behavior and stability. At a density of 0.015 g cm-3, the lightweight anisotropic aerogels displayed favorable mechanical properties, including a compressive modulus of 370 kPa, high thermal stability, low thermal conductivity (31.5 mW m-1 K-1), considerable flame retardancy (0.053 mm s-1), and self-extinguishing behavior, where the inherent characteristics were considerably improved by crosslinking. Different concentrations of the crosslinker altered the mechanical properties, while the anisotropic structure influenced the mechanical properties, combustion velocity, and to some extent thermal conductivity. Seaweed-derived aerogels possess intrinsic characteristics that could serve as a template for the future development of sustainable high-performance insulation materials.
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Affiliation(s)
- Linn Berglund
- Division
of Materials Science, Luleå University
of Technology, SE 971 87 Luleå, Sweden
| | - Tuukka Nissilä
- Fiber
and Particle Engineering Research Unit, University of Oulu, FI
90570 Oulu, Finland
| | - Deeptanshu Sivaraman
- Empa—Building
Energy Materials and Components, Swiss Federal
Laboratories for Materials Science and Technology, CH 8600 Dübendorf, Switzerland
| | | | | | - Kristiina Oksman
- Division
of Materials Science, Luleå University
of Technology, SE 971 87 Luleå, Sweden
- Mechanical
& Industrial Engineering, University
of Toronto, Toronto, Ontario M5S 3G8, Canada
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