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Li L, Zha W, Huang X, Gong Y, Li S. Fabrication and Application of Tannin Double Quaternary Ammonium Salt/Polyvinyl Alcohol as Efficient Sterilization and Preservation Material for Food Packaging. Molecules 2024; 29:4264. [PMID: 39275112 PMCID: PMC11397647 DOI: 10.3390/molecules29174264] [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: 08/04/2024] [Revised: 08/31/2024] [Accepted: 09/03/2024] [Indexed: 09/16/2024] Open
Abstract
Food packaging films play a vital role in preserving and protecting food. The focus has gradually shifted to safety and sustainability in the preparation of functional food packaging materials. In this study, a bisquaternary ammonium salt of tannic acid (BQTA) was synthesized, and the bioplastics based on BQTA and polyvinyl alcohol (PVA) were created for packaging applications. The impact of BQTA on antibacterial effect, antioxidant capacity, opacity, ultraviolet (UV) protective activity, mechanical strength, thermal stability, and anti-fog of the resultant bioplastics was examined. In vitro antibacterial experiments confirmed that BQTA possesses excellent antimicrobial properties, and only a trace amount addition of BQTA in PVA composite film could inhibit about 100% of Escherichia coli and Staphylococcus aureus. Compared to BQTA/PVA bioplastics with pure PVA, the experiment findings demonstrate that BQTA/PVA bioplastics show strong antioxidant and UV protection action and the performance of fruit preservation. It also revealed a small improvement in thermal stability and tensile strength. The small water contact angle, even at low BQTA concentrations, gave BQTA/PVA bioplastics good anti-fog performance. Based on the findings, bioplastics of BQTA/PVA have the potential to be used to create packaging, and they can be applied as the second (inner) layer of the primary packaging to protect food freshness and nutrition due to their antioxidant activity and biocompatibility.
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Affiliation(s)
- Laiqi Li
- Solid-State Ion Institute, College of Chemistry and Chemical Engineering, Hu-Nan University, Changsha 410006, China
| | - Wenke Zha
- Advanced Energy Storage Key Technology and Reliability R&D Center (AESC), School of Mechanical Engineering, Anhui Science and Technology University, Chuzhou 233100, China
| | - Ximei Huang
- Zhongshan Nenghe Biotech Co., Ltd., Zhongshan 528400, China
| | - Yangyi Gong
- Solid-State Ion Institute, College of Chemistry and Chemical Engineering, Hu-Nan University, Changsha 410006, China
| | - Sufang Li
- Solid-State Ion Institute, College of Chemistry and Chemical Engineering, Hu-Nan University, Changsha 410006, China
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De la Cruz LG, Abt T, León N, Sánchez-Soto M. Radially and Axially Oriented Ammonium Alginate Aerogels Modified with Clay/Tannic Acid and Crosslinked with Glutaraldehyde. Gels 2024; 10:526. [PMID: 39195055 DOI: 10.3390/gels10080526] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2024] [Revised: 08/07/2024] [Accepted: 08/08/2024] [Indexed: 08/29/2024] Open
Abstract
Lightweight materials that combine high mechanical strength, insulation, and fire resistance are of great interest to many industries. This work explores the properties of environmentally friendly alginate aerogel composites as potential sustainable alternatives to petroleum-based materials. This study analyzes the effects of two additives (tannic acid and montmorillonite clay), the orientation that results during casting, and the crosslinking of the biopolymer with glutaraldehyde on the properties of the aerogel composites. The prepared aerogels exhibited high porosities between 90% and 97% and densities in the range of 0.059-0.191 g/cm3. Crosslinking increased the density and resulted in excellent performance under loading conditions. In combination with axial orientation, Young's modulus and yield strength reached values as high as 305 MPa·cm3/g and 7 MPa·cm3/g, respectively. Moreover, the alginate-based aerogels exhibited very low thermal conductivities, ranging from 0.038 W/m·K to 0.053 W/m·K. Compared to pristine alginate, the aerogel composites' thermal degradation rate decreased substantially, enhancing thermal stability. Although glutaraldehyde promoted combustion, the non-crosslinked aerogel composites demonstrated high fire resistance. No flame was observed in these samples under cone calorimeter radiation, and a minuscule peak of heat release of 21 kW/m2 was emitted as a result of their highly efficient graphitization and fire suppression. The combination of properties of these bio-based aerogels demonstrates their potential as substituents for their fossil-based counterparts.
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Affiliation(s)
- Lucía G De la Cruz
- Centre Català del Plàstic, Universitat Politècnica de Catalunya, Barcelona Tech (EEBE-UPC), Av. d'Eduard Maristany, 16, 08019 Barcelona, Spain
| | - Tobias Abt
- Centre Català del Plàstic, Universitat Politècnica de Catalunya, Barcelona Tech (EEBE-UPC), Av. d'Eduard Maristany, 16, 08019 Barcelona, Spain
| | - Noel León
- Centre Català del Plàstic, Universitat Politècnica de Catalunya, Barcelona Tech (EEBE-UPC), Av. d'Eduard Maristany, 16, 08019 Barcelona, Spain
| | - Miguel Sánchez-Soto
- Centre Català del Plàstic, Universitat Politècnica de Catalunya, Barcelona Tech (EEBE-UPC), Av. d'Eduard Maristany, 16, 08019 Barcelona, Spain
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Ma YS, Kuo FM, Liu TH, Lin YT, Yu J, Wei Y. Exploring keratin composition variability for sustainable thermal insulator design. Int J Biol Macromol 2024; 275:133690. [PMID: 38971280 DOI: 10.1016/j.ijbiomac.2024.133690] [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: 03/10/2024] [Revised: 06/18/2024] [Accepted: 07/03/2024] [Indexed: 07/08/2024]
Abstract
In pursuing sustainable thermal insulation solutions, this study explores the integration of human hair and feather keratin with alginate. The aim is to assess its potential in thermal insulation materials, focusing on the resultant composites' thermal and mechanical characteristics. The investigation uncovers that the type and proportion of keratin significantly influence the composites' porosity and thermal conductivity. Specifically, higher feather keratin content is associated with lesser sulfur and reduced crosslinking due to shorter amino acids, leading to increased porosity and pore sizes. This, in turn, results in a decrease in β-structured hydrogen bond networks, raising non-ordered protein structures and diminishing thermal conductivity from 0.044 W/(m·K) for pure alginate matrices to between 0.033 and 0.038 W/(m·K) for keratin-alginate composites, contingent upon the specific ratio of feather to hair keratin used. Mechanical evaluations further indicate that composites with a higher ratio of hair keratin exhibit an enhanced compressive modulus, ranging from 60 to 77 kPa, demonstrating the potential for tailored mechanical properties to suit various applications. The research underscores the critical role of sulfur content and the crosslinking index within keratin's structures, significantly impacting the thermal and mechanical properties of the matrices. The findings position keratin-based composites as environmentally friendly alternatives to traditional insulation materials.
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Affiliation(s)
- Yu-Shuan Ma
- Department of Chemical Engineering and Biotechnology, National Taipei University of Technology (Taipei Tech), Taipei 106, Taiwan
| | - Fang-Mei Kuo
- Department of Chemical Engineering and Biotechnology, National Taipei University of Technology (Taipei Tech), Taipei 106, Taiwan
| | - Tai-Hung Liu
- Department of Chemical Engineering, College of Engineering, National Taiwan University, Taipei 106, Taiwan
| | - Yu-Ting Lin
- Department of Chemical Engineering, College of Engineering, National Taiwan University, Taipei 106, Taiwan
| | - Jiashing Yu
- Department of Chemical Engineering, College of Engineering, National Taiwan University, Taipei 106, Taiwan.
| | - Yang Wei
- Department of Chemical Engineering and Biotechnology, National Taipei University of Technology (Taipei Tech), Taipei 106, Taiwan; High-value Biomaterials Research and Commercialization Center, National Taipei University of Technology, Taipei, 10608, Taiwan.
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Liu S, He M, Qin Q, Liu W, Liao L, Qin S. Expanded Properties and Applications of Porous Flame-Retardant Polymers Containing Graphene and Its Derivatives. Polymers (Basel) 2024; 16:2053. [PMID: 39065369 PMCID: PMC11280740 DOI: 10.3390/polym16142053] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2024] [Revised: 07/11/2024] [Accepted: 07/15/2024] [Indexed: 07/28/2024] Open
Abstract
With the integration and miniaturization of modern equipment and devices, porous polymers, containing graphene and its derivatives, with flame-retardancy have become a research hotspot. In this paper, the expanded properties and high-end applications of flame-retardant porous materials containing graphene and its derivatives were discussed. The research progress regarding graphene-based porous materials with multiple energy conversion, thermal insulation, an electromagnetic shielding property, and a high adsorption capacity were elucidated in detail. The potential applications of materials with the above-mentioned properties in firefighter clothing, fire alarm sensors, flexible electronic skin, solar energy storage, energy-saving buildings, stealth materials, and separation were summarized. The construction strategies, preparation methods, comprehensive properties, and functionalization mechanisms of these materials were analyzed. The main challenges and prospects of flame-retardant porous materials containing graphene and its derivatives with expanded properties were also proposed.
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Affiliation(s)
- Shan Liu
- College of Materials and Energy Engineering, Guizhou Institute of Technology, Guiyang 550003, China
| | - Min He
- College of Materials and Metallurgy, Guizhou University, Guiyang 550025, China
| | - Qingdong Qin
- College of Materials and Energy Engineering, Guizhou Institute of Technology, Guiyang 550003, China
| | - Wei Liu
- College of Materials and Energy Engineering, Guizhou Institute of Technology, Guiyang 550003, China
| | - Longfeng Liao
- College of Materials and Metallurgy, Guizhou University, Guiyang 550025, China
| | - Shuhao Qin
- College of Materials and Metallurgy, Guizhou University, Guiyang 550025, China
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Ramirez SP, Hernandez I, Balcorta HV, Kumar P, Kumar V, Poon W, Joddar B. Microcomputed Tomography for the Microstructure Evaluation of 3D Bioprinted Scaffolds. ACS APPLIED BIO MATERIALS 2023. [PMID: 37871142 DOI: 10.1021/acsabm.3c00621] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2023]
Abstract
This study implemented the application of microcomputed tomography (micro-CT) as a characterization technique for the study and investigation of the microstructure of 3D scaffold structures produced via three-dimensional bioprinting (3DBP). The study focused on the preparation, characterization, and cytotoxicity analysis of gold nanoparticles (Au-NPs) incorporated into 3DBP hydrogels for micro-CT evaluation. The Au-NPs were characterized by using various techniques, including UV-vis spectrometry, dynamic light scattering (DLS), zeta potential measurement, and transmission electron microscopy (TEM). The characterization results confirmed the successful coating of the Au-NPs with 2 kDa methoxy-PEG and revealed their spherical shape with a mean core diameter of 66 nm. Cytotoxicity analysis using live-dead fluorescent microscopy indicated that all tested Au-NP solutions were nontoxic to AC16 cardiomyocytes in both 2D and 3D culture conditions. Scanning electron microscopy (SEM) showed distinguishable differences in image contrast and intensity between samples with and without Au-NPs, with high concentrations of Au-NPs displaying nanoparticle aggregates. Micro-CT imaging demonstrated that scaffolds containing Au-NPs depicted enhanced imaging resolution and quality, allowing for visualization of the microstructure. The 3D reconstruction of scaffold structures from micro-CT imaging using Dragonfly software further supported the improved visualization. Mechanical analysis revealed that the addition of Au-NPs enhanced the mechanical properties of acellular scaffolds, including their elastic moduli and complex viscosity, but the presence of cells led to biodegradation and reduced mechanical strength. These findings highlight the successful preparation and characterization of Au-NPs, their nontoxic nature in both 2D and 3D culture conditions, their influence on imaging quality, and the impact on the mechanical properties of 3D-printed hydrogels. These results contribute to the development of functional and biocompatible materials for tissue engineering and regenerative medicine applications.
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Affiliation(s)
- Salma P Ramirez
- Inspired Materials & Stem-Cell Based Tissue Engineering Laboratory (IMSTEL), The University of Texas at El Paso, El Paso, Texas 79968, United States
- Department of Metallurgical, Materials, and Biomedical Engineering, The University of Texas at El Paso, El Paso, Texas 79968, United States
| | - Ivana Hernandez
- Inspired Materials & Stem-Cell Based Tissue Engineering Laboratory (IMSTEL), The University of Texas at El Paso, El Paso, Texas 79968, United States
- Department of Metallurgical, Materials, and Biomedical Engineering, The University of Texas at El Paso, El Paso, Texas 79968, United States
| | - Hannia V Balcorta
- Department of Metallurgical, Materials, and Biomedical Engineering, The University of Texas at El Paso, El Paso, Texas 79968, United States
- Delivery Systems and Nano-Therapeutics Innovation Laboratory (DESTINATION), The University of Texas at El Paso, El Paso, Texas 79968, United States
| | - Piyush Kumar
- Department of Aerospace and Mechanical Engineering, The University of Texas at El Paso, El Paso, Texas 79968, United States
| | - Vinod Kumar
- Department of Aerospace and Mechanical Engineering, The University of Texas at El Paso, El Paso, Texas 79968, United States
| | - Wilson Poon
- Department of Metallurgical, Materials, and Biomedical Engineering, The University of Texas at El Paso, El Paso, Texas 79968, United States
- Delivery Systems and Nano-Therapeutics Innovation Laboratory (DESTINATION), The University of Texas at El Paso, El Paso, Texas 79968, United States
| | - Binata Joddar
- Inspired Materials & Stem-Cell Based Tissue Engineering Laboratory (IMSTEL), The University of Texas at El Paso, El Paso, Texas 79968, United States
- Department of Metallurgical, Materials, and Biomedical Engineering, The University of Texas at El Paso, El Paso, Texas 79968, United States
- Border Biomedical Research Center, The University of Texas at El Paso, 500 W. University Avenue, El Paso, Texas 79968, United States
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Si C, Tian X, Wang Y, Wang Z, Wang X, Lv D, Wang A, Wang F, Geng L, Zhao J, Hu R, Zhu Q. A Polyvinyl Alcohol-Tannic Acid Gel with Exceptional Mechanical Properties and Ultraviolet Resistance. Gels 2022; 8:751. [PMID: 36421573 PMCID: PMC9689605 DOI: 10.3390/gels8110751] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2022] [Revised: 11/07/2022] [Accepted: 11/16/2022] [Indexed: 12/02/2023] Open
Abstract
Design and preparation of gels with excellent mechanical properties has garnered wide interest at present. In this paper, preparation of polyvinyl alcohol (PVA)-tannic acid (TA) gels with exceptional properties is documented. The crystallization zone and hydrogen bonding acted as physical crosslinkages fabricated by a combination of freeze-thaw treatment and a tannic acid compound. The effect of tannic acid on mechanical properties of prepared PVA-TA gels was investigated and analyzed. When the mass fraction of PVA was 20.0 wt% and soaking time was 12 h in tannic acid aqueous solution, tensile strength and the elongation at break of PVA-TA gel reached 5.97 MPa and 1450%, respectively. This PVA-TA gel was far superior to a pure 20.0 wt% PVA hydrogel treated only with the freeze-thaw process, as well as most previously reported PVA-TA gels. The toughness of a PVA-TA gel is about 14 times that of a pure PVA gel. In addition, transparent PVA-TA gels can effectively prevent ultraviolet-light-induced degradation. This study provides a novel strategy and reference for design and preparation of high-performance gels that are promising for practical application.
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Affiliation(s)
- Chunqing Si
- College of Chemistry and Chemical Engineering, Dezhou University, Dezhou 253023, China
| | - Xintong Tian
- College of Chemistry and Chemical Engineering, Dezhou University, Dezhou 253023, China
| | - Yan Wang
- College of Chemistry and Chemical Engineering, Dezhou University, Dezhou 253023, China
| | - Zhigang Wang
- College of Chemistry and Chemical Engineering, Dezhou University, Dezhou 253023, China
| | - Xinfang Wang
- College of Chemistry and Chemical Engineering, Dezhou University, Dezhou 253023, China
| | - Dongjun Lv
- College of Chemistry and Chemical Engineering, Dezhou University, Dezhou 253023, China
| | - Aili Wang
- College of Chemistry and Chemical Engineering, Dezhou University, Dezhou 253023, China
| | - Fang Wang
- College of Chemistry and Chemical Engineering, Dezhou University, Dezhou 253023, China
| | - Longlong Geng
- College of Chemistry and Chemical Engineering, Dezhou University, Dezhou 253023, China
| | - Jing Zhao
- College of Chemistry and Chemical Engineering, Dezhou University, Dezhou 253023, China
| | - Ruofei Hu
- College of Chemistry and Chemical Engineering, Dezhou University, Dezhou 253023, China
| | - Qingzeng Zhu
- School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, China
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Dong C, Hu Y, Zhu Y, Wang J, Jia X, Chen J, Li J. Fabrication of Textile Waste Fibers Aerogels with Excellent Oil/Organic Solvent Adsorption and Thermal Properties. Gels 2022; 8:gels8100684. [PMID: 36286185 PMCID: PMC9601950 DOI: 10.3390/gels8100684] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2022] [Revised: 10/19/2022] [Accepted: 10/19/2022] [Indexed: 11/04/2022] Open
Abstract
In recent years, the treatment of textile waste has attracted more and more attention around the world. The reuse of textile waste can contribute to the reduction of carbon emissions and the sustainable development of the economy. Herein, we proposed a facile and cost-effective approach to fabricating aerogel by using textile waste fibers as the matrix and polyvinyl alcohol (PVA) and glutaraldehyde (GA) as crosslinking agents. After being modified with methyltrimethoxysilane (MTMS) via chemical vapor deposition, both the interior and exterior of the textile waste aerogels exhibit a hydrophobic property with a water contact angle of up to 136.9° ± 2.3°. A comprehensive investigation of the structure, thermal properties, mechanical properties and oil absorption capacity of this aerogel shows its potential for building insulation and oil spill cleanup. The textile waste fibers aerogels have low density and high porosity, good thermal stability and outstanding heat insulation properties (Kavg. = 0.049–0.061 W/m·K). With a maximum oil absorption value of 26.9 ± 0.6 g/g and rapid and effective oil/water mixture separation, the aerogel exhibits competitive commercial application value.
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Affiliation(s)
- Chunlei Dong
- Research Centre for Non-Metallic Materials, Chizhou University, Chizhou 247000, China
| | - Yangzhao Hu
- Research Centre for Non-Metallic Materials, Chizhou University, Chizhou 247000, China
| | - Yuxuan Zhu
- Research Centre for Non-Metallic Materials, Chizhou University, Chizhou 247000, China
| | - Jiale Wang
- Research Centre for Non-Metallic Materials, Chizhou University, Chizhou 247000, China
| | - Xuerui Jia
- Research Centre for Non-Metallic Materials, Chizhou University, Chizhou 247000, China
| | - Jianbing Chen
- Research Centre for Non-Metallic Materials, Chizhou University, Chizhou 247000, China
- Institute for Frontier Materials, Deakin University, Geelong, VIC 3200, Australia
- Correspondence: (J.C.); (J.L.)
| | - Jingliang Li
- Institute for Frontier Materials, Deakin University, Geelong, VIC 3200, Australia
- Correspondence: (J.C.); (J.L.)
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Epoxy Compositions with Reduced Flammability Based on DER-354 Resin and a Curing Agent Containing Aminophosphazenes Synthesized in Bulk Isophoronediamine. Polymers (Basel) 2022; 14:polym14173592. [PMID: 36080667 PMCID: PMC9460727 DOI: 10.3390/polym14173592] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2022] [Revised: 08/25/2022] [Accepted: 08/29/2022] [Indexed: 11/23/2022] Open
Abstract
A method for the synthesis of an amine-containing epoxy resin curing agent by dissolving hexakis-[(4-formyl)phenoxy]cyclotriphosphazene in an excess of isophoronediamine was developed. The curing agent was characterized via NMR and IR spectroscopy and MALDI-TOF mass spectrometry, and its rheological characteristics were studied. Compositions based on DER-354 epoxy resin and the synthesized curing agent with different amounts of phosphazene content were obtained. The rheological characteristics of these compositions were studied, followed by their curing. An improvement in several thermal (DSC), mechanical (compression, tension, and adhesion), and physicochemical (water absorption and water solubility) characteristics, as well as the fire resistance of the obtained materials modified with phosphazene, was observed, compared with unmodified samples. In particular, there was an improvement in adhesive characteristics and fire resistance. Thus, compositions based on a curing agent containing a 30% modifier were shown to fulfill the V-1 fire resistance category. The developed compositions can be processed by contact molding, winding, and resin transfer molding (RTM), and the resulting material is suitable for use in aircraft, automotive products, design applications, and home repairs.
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