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Feng S, Guo J, Yang Q, Guan F, Yao Q, Wang Y, Quan F, Zeng S. Development of polyvinyl alcohol/carrageenan hydrogels and fibers via KOH treatment for Morse code information transmission. Int J Biol Macromol 2024; 265:130803. [PMID: 38484811 DOI: 10.1016/j.ijbiomac.2024.130803] [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: 10/31/2023] [Revised: 03/02/2024] [Accepted: 03/10/2024] [Indexed: 03/25/2024]
Abstract
To solve the inherent problems of conductive hydrogels, such as relatively low mechanical properties and fatigue resistance, inability to work after water loss, and difficulty weaving. In this study, the borax-crosslinked polyvinyl alcohol/k-carrageenan (kC) conducting hydrogels (BPKKOH) were prepared by a simple one-pot method, and KOH treatment was used instead of the cumbersome and time-consuming freeze-thaw cycle to improve the comprehensive properties. The KOH treatment increased the hydrogel hydrogen bonding content by 7.72 % and synergized with the induction of kC by K+ to enhance the tensile and compressive strengths by 8.12 and 34.6 times, respectively. Meanwhile, the BPKKOH hydrogel's fatigue resistance and shape recovery after water loss were improved. Additionally, the BPKKOH hydrogels can be monitored for finger bending, showing clear and stable differences in electrical signals. BPKKOH hydrogels combined with Morse code realize applications in information transmission and encryption/decryption. Notably, introducing KOH ensures the molding and preparation of BPKKOH hydrogel fibers while having good signal responsiveness and monitoring ability. More importantly, it can be woven into fabrics that can be loaded with heavy weights, which has the potential to be directly applied in smart wearables. This work provides new ideas for applying flexible sensors and wearable smart textiles.
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Affiliation(s)
- Shi Feng
- School of Textile and Material Engineering, Dalian Polytechnic University, Dalian 116034, China
| | - Jing Guo
- School of Textile and Material Engineering, Dalian Polytechnic University, Dalian 116034, China.
| | - Qiang Yang
- School of Textile and Material Engineering, Dalian Polytechnic University, Dalian 116034, China
| | - Fucheng Guan
- School of Textile and Material Engineering, Dalian Polytechnic University, Dalian 116034, China.
| | - Qiang Yao
- School of Textile and Material Engineering, Dalian Polytechnic University, Dalian 116034, China
| | - Yonghe Wang
- School of Textile and Material Engineering, Dalian Polytechnic University, Dalian 116034, China
| | - Fengyu Quan
- State Key Laboratory of Bio-Fibers and Eco-Textiles, Qingdao University, Qingdao 266071, China
| | - Shijun Zeng
- Dalian Huayang New Material Technology Co., Ltd., Dalian 116047, China
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2
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Rana H, Anamika, Sareen D, Goswami S. Nanocellulose-Based Ecofriendly Nanocomposite for Effective Wastewater Remediation: A Study on Its Process Optimization, Improved Swelling, Adsorption, and Thermal and Mechanical Behavior. ACS OMEGA 2024; 9:8904-8922. [PMID: 38434840 PMCID: PMC10905691 DOI: 10.1021/acsomega.3c06924] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/11/2023] [Revised: 12/29/2023] [Accepted: 01/05/2024] [Indexed: 03/05/2024]
Abstract
A nanocellulose (NC)-based cross-linked adsorbent has been employed herein for the removal of dye pollutants (e.g., methylene blue) from the textile industry. The synthesized hydrogel was optimized to achieve the best concentrations of the adsorbent constituents, i.e., 1.55% guar gum, 1.46% NC, and 0.84% borax for achieving the maximum swelling index (SI, 3741.42%) and higher adsorption capacity (qe, 24.05 mg g-1). 98.8% of dye qe was achieved at optimal conditions of pH 8 within 30 min at 30 °C. Adsorption isotherms and kinetics investigations showed good correlation with the Freundlich adsorption isotherm model (R2 > 0.9889; ΔG° = -4.71; ΔH° = -12.30; ΔS° = -0.025) as well as the pseudo-second-order kinetics model, indicating multilayered and intricate adsorption mechanisms for dye removal. The study of thermodynamic parameters confirmed the exothermic nature of the adsorption process. The adsorption-desorption study of the resulting hydrogel exhibited 64.58% dye removal efficiency even after 4 consecutive cycles of reuse. Further, scanning electron microscopy, Fourier transform infrared spectroscopy, thermogravimetric analysis, and X-ray diffraction analysis revealed the surface morphology, functional moieties, thermal behavior, and crystallinity pattern of the hydrogel. Rheological analysis demonstrated pseudoplastic flow and improved mechanical behavior for the hydrogel. The current study found that the synthesized adsorbent with a higher SI and qe has a noticeable potential for the removal of dye pollutants from wastewater.
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Affiliation(s)
- Harshdeep Rana
- Chemical
Engineering Division, Center of Innovative
and Applied Bioprocessing, Mohali, Punjab 140306, India
- Department
of Biochemistry, Panjab University, Hargobind Khorana Block, Sector-25, Chandigarh 160014, India
| | - Anamika
- Chemical
Engineering Division, Center of Innovative
and Applied Bioprocessing, Mohali, Punjab 140306, India
| | - Dipti Sareen
- Department
of Biochemistry, Panjab University, Hargobind Khorana Block, Sector-25, Chandigarh 160014, India
| | - Saswata Goswami
- Chemical
Engineering Division, Center of Innovative
and Applied Bioprocessing, Mohali, Punjab 140306, India
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Jiang Q, Xu P, Xu J, Hou M, Liu Q, Dai B. Preparation and Evaluation of Composite Hydrogel for Reducing the Leakage Rate of Lost Circulation. Polymers (Basel) 2023; 15:4218. [PMID: 37959898 PMCID: PMC10647633 DOI: 10.3390/polym15214218] [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: 09/13/2023] [Revised: 10/14/2023] [Accepted: 10/19/2023] [Indexed: 11/15/2023] Open
Abstract
Fractured reservoirs are widely distributed and rich in hydrocarbon resources. When encountering fractured reservoirs during the drilling process, it is often accompanied by formation losses characterized by high leak-off rates, causing severe damage to the reservoir and hindering the detection of oil and gas layers, which is not conducive to the accurate and efficient development of the reservoirs. Conventional plugging materials have poor retention effects in the fractures, resulting in the low stability of the sealing layer. The treatment of malignant lost circulation in fractured formations is an urgent problem to be solved in drilling engineering. This article focuses on improving the success rate of formation plugging through the combined use of multiple plugging materials and develops a composite hydrogel that can effectively reduce leakage rates. This hydrogel is mainly composed of materials such as polyvinyl alcohol, borax, and sodium silicate. It has good temperature resistance, maintains good gel strength at 60 °C, and can maintain long-term performance stability under simulated geological water conditions with salinity of 12,500 mg/L. For immersion corrosion by water or gasoline, the amount of corrosion is small and its fundamental performance remains largely unchanged. Through indoor simulation of a leak formation scenario, the hydrogel demonstrates commendable sealing pressure-bearing capacity. In terms of delaying fluid leakage, mixing the hydrogel with cement slurry at a ratio of 1:1 can delay the leakage rate of the cement slurry by a factor of 5.29.
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Affiliation(s)
- Qisheng Jiang
- Cooperative Innovation Center of Unconventional Oil and Gas, Yangtze University, Wuhan 430100, China;
- School of Petroleum Engineering, National Engineering Research Center for Oil & Gas Drilling and Completion Technology, Yangtze University, Wuhan 430100, China; (Q.L.); (B.D.)
| | - Peng Xu
- Cooperative Innovation Center of Unconventional Oil and Gas, Yangtze University, Wuhan 430100, China;
- School of Petroleum Engineering, National Engineering Research Center for Oil & Gas Drilling and Completion Technology, Yangtze University, Wuhan 430100, China; (Q.L.); (B.D.)
- Hubei Key Laboratory of Oil and Gas Drilling and Production Engineering, Yangtze University, Wuhan 430100, China
- Jingzhou Jiahua Technology Co., Ltd., Jingzhou 434023, China
| | - Jie Xu
- Haikou Marine Geological Survey Center, China Geological Survey, Haikou 571127, China
| | - Manfu Hou
- Bohai Drilling International Engineering Company, Tianjin 300450, China;
| | - Qinglin Liu
- School of Petroleum Engineering, National Engineering Research Center for Oil & Gas Drilling and Completion Technology, Yangtze University, Wuhan 430100, China; (Q.L.); (B.D.)
| | - Baimei Dai
- School of Petroleum Engineering, National Engineering Research Center for Oil & Gas Drilling and Completion Technology, Yangtze University, Wuhan 430100, China; (Q.L.); (B.D.)
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Zhu R, Lv W, Sun C, Qin C, Zhang D, Long Z. A facile strategy to fabricate high-barrier, water- and oil-repellent paper with carboxymethyl cellulose/collagen fiber/modified polyvinyl alcohol. Carbohydr Polym 2023; 314:120933. [PMID: 37173031 DOI: 10.1016/j.carbpol.2023.120933] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2023] [Revised: 04/13/2023] [Accepted: 04/16/2023] [Indexed: 05/15/2023]
Abstract
Due to the increasingly serious environmental and human health hazards brought by traditional food packaging materials, paper-based packaging materials have become increasingly popular among consumers in recent years. Currently, the fabrication of fluorine-free degradable water- and oil-repellent paper using low-cost bio-based polymers by a simple method is a hot subject in the field of food packaging. In this work, we used carboxymethyl cellulose (CMC), collagen fiber (CF), and modified polyvinyl alcohol (MPVA) to create coatings that were impervious to water and oil. The homogeneous mixture of CMC and CF generated electrostatic adsorption to impart excellent oil repellency to the paper. PVA was chemically modified by sodium tetraborate decahydrate, and the MPVA coating imparted excellent water-repellent properties to the paper. Finally, the water- and oil-proof paper showed excellent water repellency (Cobb value: 1.12 g/m2), oil repellency (kit rating: 12/12), low air permeability (0.3 μm/Pa·s), and stronger mechanical properties (4.19 kN/m). This non-fluorinated degradable water- and oil-repellent paper with high barrier properties prepared by a convenient method is expected to be in widespread use in the food packaging field.
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Affiliation(s)
- Ruifeng Zhu
- Laboratory of Papermaking, College of Textile Science and Engineering, Jiangnan University, Wuxi 214122, China
| | - Wenzhi Lv
- College of Chemistry and Chemical Engineering of Qiannan Normal University for Nationalities, Tuyun 558000, China
| | - Chang Sun
- Laboratory of Papermaking, College of Textile Science and Engineering, Jiangnan University, Wuxi 214122, China; Guangxi Key Laboratory of Clean Pulp & Papermaking and Pollution Control, School of Light Industry and Food Engineering, Guangxi University, Nanning 530004, China
| | - Chengrong Qin
- Guangxi Key Laboratory of Clean Pulp & Papermaking and Pollution Control, School of Light Industry and Food Engineering, Guangxi University, Nanning 530004, China
| | - Dan Zhang
- Laboratory of Papermaking, College of Textile Science and Engineering, Jiangnan University, Wuxi 214122, China
| | - Zhu Long
- Laboratory of Papermaking, College of Textile Science and Engineering, Jiangnan University, Wuxi 214122, China.
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Abbes C, Zammali M, Mahjoub HF, Othman T. Microrheological study of PVA–borax physical gel: effects of charge screening. Macromol Res 2023. [DOI: 10.1007/s13233-023-00146-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/05/2023]
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Manigandan A, Dhandapani R, Bagewadi S, Sethu P, Sethuraman S, Subramanian A. Facile fabrication of Bi-layered Perfusable Hydrogel Tubes as Biomimetic 3D arterial construct. Biomed Mater 2022; 17. [PMID: 36099909 DOI: 10.1088/1748-605x/ac91ba] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2022] [Accepted: 09/13/2022] [Indexed: 11/12/2022]
Abstract
Small-diameter arterial conduits with native physiological and biological equivalence continues to be a constant global demand posing critical challenges in fabrication. Advent of various strategies towards mimicking the structural hierarchy of a native blood vessel, often involve complex instrumentation and template-assistance with post-processing complications eventually compromising structural fidelity. In the present research, we report a template-free, facile strategy- '3D wet writing' by peripheral-core differential ionic gelation to fabricate perfusable customizable constructs of any dimension, thickness and length in <5 mins. Dual-crosslinking using di-diol complexation of borax with Alginate-PVA was performed to enhance the stability of fabricated bi-layered tubular constructs (BLT). These fabricated BLTs demonstrated non-liner mechanical characteristics of native blood vessels in withstanding physiological (120/80 mmHg) hemodynamic loading conditions with cyclic strain (5.82 ± 0.88 %). The BLTs also ensured adequate longitudinal (0.176 ± 0.03 MPa) & circumferential (0.29 ± 0.012 MPa) tensile strength and burst pressure strength of 353.875± 22.69 mmHg. Hemocompatible characteristics of BLT were clearly evident with lower hemolytic index (0.21±0.03 %) and maintenance of erythrocyte structural integrity under dynamic conditions. Further, non-thrombogenic and non-inflammatory characteristics of BLTs were confirmed by in-activated platelets and monocytes under dynamic conditions. The developed wet-writing technique exhibited facile integration of layer-specific cells concurrently with the BLT fabrication. The spatial cell-specific expressions of smooth muscle (α-SMA) and endothelial (CD-31) cells in BLT were comparable to native hierarchical cellular organization with the multi-layered medial and mono-layered intimal layers. Further, ex-vivo dynamic studies on anastomotic interface between BLT and rat abdominal aorta clearly evidenced the functional efficacy of fabricated BLTs as physiologically relevant small-diameter vascular construct.
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Affiliation(s)
- Amrutha Manigandan
- Centre for Nanotechnology and Advanced Biomaterials, SASTRA University, Tissue Engineering & Additive Manufacturing lab, Thanjavur, Tamilnadu, 613401, INDIA
| | - Ramya Dhandapani
- Centre for Nanotechnology and Advanced Biomaterials, SASTRA University, Tissue Engineering & Additive Manufacturing lab, Thanjavur, Tamilnadu, 613401, INDIA
| | - Shambhavi Bagewadi
- Centre for Nanotechnology and Advanced Biomaterials, SASTRA University, Thanjavur, Thanjavur, TanilNadu, 613401, INDIA
| | - Palaniappan Sethu
- Division of Cardiovascular Disease, University of Alabama at Birmingham, Department of Medicine, Department of Biomedical Engineering, Birmingham, Alabama, AL 35223, UNITED STATES
| | - Swaminathan Sethuraman
- Center for Nanotechnology and Advanced Biomaterials, Sastra University, Thirumalaisamudram, Thanjavur 613402, Thanjavur, 613401, INDIA
| | - Anuradha Subramanian
- Centre for Nanotechnology and Advanced Biomaterials, SASTRA University, Tissue Engineering & Additive Manufacturing Lab, Thanjavur, Thanjavur, - State -, 613401, INDIA
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Matsumoto A, Zhang C, Scheffold F, Shen AQ. Microrheological Approach for Probing the Entanglement Properties of Polyelectrolyte Solutions. ACS Macro Lett 2022; 11:84-90. [PMID: 35574786 DOI: 10.1021/acsmacrolett.1c00563] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The entanglement dynamics and viscoelasticity of polyelectrolyte solutions remain active research topics. Previous studies have reported conflicting experimental results when compared to Dobrynin's scaling predictions derived from the Doi-Edwards (DE) tube model for entangled polymers. Herein, by combining classical bulk shear rheometry with diffusing wave spectroscopy (DWS) microrheometry, we investigate how the key viscoelastic parameters (the specific viscosity ηsp, the plateau modulus Ge, and the ratio of the reptation time to the Rouse time of an entanglement strand τrep/τe) depend on the polymer concentration for semidilute entangled (SE) solutions containing poly(sodium styrenesulfonate) with high molecular weight. Our experimental measurements yield Ge ∝ c1.51±0.04, in good agreement with the scaling of Ge ∝ c1.5 predicted by Dobrynin's model for salt-free polyelectrolyte SE solutions, suggesting that the electrostatic interaction influences the viscoelastic properties of polyelectrolyte SE solutions. On the other hand, the deviation in the scaling exponent for ηsp ∝ c2.56±0.04 and τrep/τe ∝ c1.82±0.28 is observed between our DWS experiments and Dobrynin's model prediction (∝ c1.5), likely due to the fact that Dobrynin's scaling model does not account for mechanisms such as the contour length fluctuation, the constraint release, and the retardation of solvent dynamics, which are known to occur for SE solutions of neutral polymers. Our results demonstrate that DWS serves as a powerful rheological tool to study the entanglement dynamics of polyelectrolyte solutions. The scaling relationships obtained in this study provide new insights to the long-standing debate on the entanglement dynamics of polyelectrolyte solutions.
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Affiliation(s)
- Atsushi Matsumoto
- Micro/Bio/Nanofluidics Unit, Okinawa Institute of Science and Technology Graduate University, 1919-1 Tancha, Onna-son, Kunigami-gun, Okinawa 904-0495, Japan
- Department of Applied Chemistry and Biotechnology, University of Fukui, 3-9-1 Bunkyo, Fukui-shi, Fukui 910-8507, Japan
| | - Chi Zhang
- Department of Physics, University of Fribourg, Chemin du Musée 3, 1700 Fribourg, Switzerland
| | - Frank Scheffold
- Department of Physics, University of Fribourg, Chemin du Musée 3, 1700 Fribourg, Switzerland
| | - Amy Q. Shen
- Micro/Bio/Nanofluidics Unit, Okinawa Institute of Science and Technology Graduate University, 1919-1 Tancha, Onna-son, Kunigami-gun, Okinawa 904-0495, Japan
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Zhang Z, Lucia L. Toward synergistic reinforced graphene nanoplatelets composite hydrogels with self-healing and multi-stimuli responses. POLYMER 2021. [DOI: 10.1016/j.polymer.2021.124228] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
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9
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Medrano-David D, Lopera AM, Londoño ME, Araque-Marín P. Formulation and Characterization of a New Injectable Bone Substitute Composed PVA/Borax/CaCO 3 and Demineralized Bone Matrix. J Funct Biomater 2021; 12:46. [PMID: 34449632 PMCID: PMC8395841 DOI: 10.3390/jfb12030046] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2021] [Revised: 07/30/2021] [Accepted: 08/04/2021] [Indexed: 12/22/2022] Open
Abstract
The occurrence of bone-related disorders and diseases has dramatically increased in recent years around the world. Demineralized bone matrix (DBM) has been widely used as a bone implant due to its osteoinduction and bioactivity. However, the use of DBM is limited because it is a particulate material, which makes it difficult to manipulate and implant with precision. In addition, these particles are susceptible to migration to other sites. To address this situation, DBM is commonly incorporated into a variety of carriers. An injectable scaffold has advantages over bone grafts or preformed scaffolds, such as the ability to flow and fill a bone defect. The aim of this research was to develop a DBM carrier with such viscoelastic properties in order to obtain an injectable bone substitute (IBS). The developed DBM carrier consisted of a PVA/glycerol network cross-linked with borax and reinforced with CaCO3 as a pH neutralizer, porosity generator, and source of Ca. The physicochemical properties were determined by an injectability test, FTIR, SEM, and TGA. Porosity, degradation, bioactivity, possible cytotoxic effect, and proliferation in osteoblasts were also determined. The results showed that the developed material has great potential to be used in bone tissue regeneration.
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Affiliation(s)
- Daniela Medrano-David
- Research Group GIBEC, Life Sciences Faculty, EIA University, Envigado 055420, Colombia; (A.M.L.); (M.E.L.)
| | - Aura María Lopera
- Research Group GIBEC, Life Sciences Faculty, EIA University, Envigado 055420, Colombia; (A.M.L.); (M.E.L.)
| | - Martha Elena Londoño
- Research Group GIBEC, Life Sciences Faculty, EIA University, Envigado 055420, Colombia; (A.M.L.); (M.E.L.)
| | - Pedronel Araque-Marín
- Research and Innovation Group in Chemical Formulations, Life Sciences Faculty, EIA University, Envigado 055420, Colombia;
- CECOLTEC, Medellín 050022, Colombia
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Symmetry breakdown in the sol-gel transition of a Guar gum transient physical network. Carbohydr Polym 2021; 258:117689. [PMID: 33593562 DOI: 10.1016/j.carbpol.2021.117689] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2020] [Revised: 01/16/2021] [Accepted: 01/18/2021] [Indexed: 11/23/2022]
Abstract
The gelation of the mixture of guar gum and borax in an aqueous solution was studied by diffusing-wave spectroscopy microrheology. The Winter and Chambon power-law domain was evidenced at high-frequency range. The time-cure superposition was applied to the mean square displacement of the probe particles and the critical power-law behavior of the shifting factors was revealed close to the percolation threshold. Morphological characterization revealed the emergence of ribbon-like structures at high borax concentrations. The Rubinstein and Semenov plateau was demonstrated. The correlations between the critical exponents that govern the gelation of the transient networks were reviewed with regard to the scaling laws of both permanent and transient networks. Unlike permanent networks, the relation n+= n- was assumed as the unique condition to establish the hyperscaling laws in transient networks. Whereas, the symmetry breakdown of the longest relaxation time was found to be a common feature of the flowable gels.
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Self-healing quadruple-shape memory hydrogel based on imine, coordination, and borate bonds with tunable mechanical properties. Colloid Polym Sci 2020. [DOI: 10.1007/s00396-020-04613-8] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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