1
|
Johari N, Rahimi F, Azami H, Rafati F, Nokhbedehghan Z, Samadikuchaksaraei A, Moroni L. The impact of copper nanoparticles surfactant on the structural and biological properties of chitosan/sodium alginate wound dressings. BIOMATERIALS ADVANCES 2024; 162:213918. [PMID: 38880016 DOI: 10.1016/j.bioadv.2024.213918] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/10/2024] [Revised: 05/02/2024] [Accepted: 05/31/2024] [Indexed: 06/18/2024]
Abstract
Multifunctional wound dressings based on hydrogels are an efficacious and practicable strategy in therapeutic processes and accelerated chronic wound healing. Here, copper (Cu) nanoparticles were added to chitosan/sodium alginate (CS/SA) hydrogels to improve the antibacterial properties of the prepared wound dressings. Due to the super-hydrophobicity of Cu nanoparticles, polyethylene glycol (PEG) was used as a surfactant, and then added to the CS/SA-based hydrogels. The CS/SA/Cu hydrogels were synthesized with 0, 2, 3.5, and 5 wt% Cu nanoparticles. The structural and morphological properties in presence of PEG were evaluated using Fourier-transform infrared spectroscopy (FTIR), Differential scanning calorimetry (DSC), and field emission scanning electron microscopy (FESEM). The biodegradation and swelling properties of the hydrogels were investigated in phosphate buffer saline (PBS) at 37 °C for up to 30 days. Cell viability and adhesion, as well as antibacterial behavior, were investigated via MTT assay, FESEM, and disk diffusion method, respectively. The obtained results showed that PEG provided new intra- and intermolecular bonds that affected significantly the hydrogels' degradation and swelling ratio, which increased up to ~1200 %. Cell viability reached ~110 % and all samples showed remarkable antibacterial behavior when CS/SA/Cu containing 2 wt% was introduced. This study provided new insights regarding the use of PEG as a surfactant for Cu nanoparticles in CS/SA hydrogel wound dressing, ultimately affecting the chemical bonding and various properties of the prepared hydrogels.
Collapse
Affiliation(s)
- Narges Johari
- Materials Engineering group, Golpayegan College of Engineering, Isfahan University of Technology, Golpayegan, Iran.
| | - Faezeh Rahimi
- Materials Engineering group, Golpayegan College of Engineering, Isfahan University of Technology, Golpayegan, Iran
| | - Haniyeh Azami
- Materials Engineering group, Golpayegan College of Engineering, Isfahan University of Technology, Golpayegan, Iran
| | - Fatemeh Rafati
- Materials Engineering group, Golpayegan College of Engineering, Isfahan University of Technology, Golpayegan, Iran
| | - Zeinab Nokhbedehghan
- Department of Medical Biotechnology, Faculty of Allied Medicine, Iran University of Medical Science, Tehran, Iran
| | - Ali Samadikuchaksaraei
- Department of Medical Biotechnology, Faculty of Allied Medicine, Iran University of Medical Science, Tehran, Iran
| | - Lorenzo Moroni
- MERLN Institute for Technology Inspired Regenerative Medicine, Complex Tissue Regeneration Department, Maastricht University, Maastricht, the Netherlands.
| |
Collapse
|
2
|
Soltani L, Varmira K, Nazari M. Comparison of the differentiation of ovine fetal bone-marrow mesenchymal stem cells towards osteocytes on chitosan/alginate/CuO-NPs and chitosan/alginate/FeO-NPs scaffolds. Sci Rep 2024; 14:161. [PMID: 38168144 PMCID: PMC10762099 DOI: 10.1038/s41598-023-50664-6] [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: 09/26/2023] [Accepted: 12/22/2023] [Indexed: 01/05/2024] Open
Abstract
In the current study, the creation of a chitosan/alginate scaffold hydrogel with and without FeO-NPs or CuO-NPs was studied. From fetal ovine bone marrow mesenchymal stem cells (BM-MSCs) were isolated and cultivated. Their differentiation into osteocyte and adipose cells was investigated. Also, on the scaffolds, cytotoxicity and apoptosis were studied. To investigate the differentiation, treatment groups include: (1) BM-MSCs were plated in DMEM culture medium with high glucose containing 10% FBS and antibiotics (negative control); (2) BM-MSCs were plated in osteogenic differentiation medium (positive control); (3) positive control group + FeO-NPs, (4) positive control group + CuO-NPs; (5) BM-MSCs were plated in osteogenic differentiation medium on chitosan/alginate scaffold; (6) BM-MSCs were plated in osteogenic differentiation medium on chitosan/alginate/FeO-NPs scaffold; and (7) BM-MSCs were plated in osteogenic differentiation medium on chitosan/alginate/CuO-NPs scaffold. Alkaline phosphatase enzyme concentrations, mineralization rate using a calcium kit, and mineralization measurement by alizarin staining quantification were evaluated after 21 days of culture. In addition, qRT-PCR was used to assess the expression of the ALP, ColA, and Runx2 genes. When compared to other treatment groups, the addition of CuO-NPs in the chitosan/alginate hydrogel significantly increased the expression of the ColA and Runx2 genes (p < 0.05). However, there was no significant difference between the chitosan/alginate hydrogel groups containing FeO-NPs and CuO-NPs in the expression of the ALP gene. It appears that the addition of nanoparticles, in particular CuO-NPs, has made the chitosan/alginate scaffold more effective in supporting osteocyte differentiation.
Collapse
Affiliation(s)
- Leila Soltani
- Department of Animal Sciences, College of Agriculture and Natural Resources, Razi University, Kermanshah, 67144-14971, Iran.
| | - Kambiz Varmira
- Research Center of Oils and Fats, Kermanshah University of Medical Sciences, Kermanshah, Iran.
| | - Maryam Nazari
- Applied Chemistry Department, Faculty of Chemistry, Razi University, Kermanshah, Iran
| |
Collapse
|
3
|
Rahmatpour A, Alijani N. An all-biopolymer self-assembling hydrogel film consisting of chitosan and carboxymethyl guar gum: A novel bio-based composite adsorbent for Cu 2+ adsorption from aqueous solution. Int J Biol Macromol 2023; 242:124878. [PMID: 37187419 DOI: 10.1016/j.ijbiomac.2023.124878] [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: 02/21/2023] [Revised: 05/05/2023] [Accepted: 05/11/2023] [Indexed: 05/17/2023]
Abstract
A novel bio-based composite adsorbent, all biopolymer self-assembled hydrogel film has been prepared by eco-friendly amalgamating chitosan (CS) and carboxymethyl guar gum (CMGG) biopolymers in water without needing small molecules for cross-linking. Various analysis demonstrated the electrostatic interactions and hydrogen bondings within the network structure are responsible for gelling, crosslinking, and forming a 3D structure. Various experimental parameters were optimized to evaluate the CS/CMGG's potential for removing Cu2+ ions from aqueous solution, including pH, dosage, Cu(II) initial concentration, contact time, and temperature. The pseudo-second-order kinetic and Langmuir isotherm models are highly correlated with the kinetic and equilibrium isotherm data, respectively. Using the Langmuir isotherm model for an initial metal concentration of 50 mg/L at pH 6.0 and 25 °C, the maximum adsorption of Cu(II) was calculated to be 155.51 mg/g. A combination of adsorption-complexation and ion exchange must be involved in Cu(II) adsorption on the CS/CMGG. Five cycles of the loaded CS/CMGG hydrogel regeneration and reuse were successfully achieved without an appreciable difference in Cu(II) removal percentage. Thermodynamic analysis indicated that copper adsorption occurred spontaneously (ΔG°: -2.85 J/mol, 298 K) and exothermically (ΔH°: -27.58 J/mol). A reusable bio-adsorbent for removing heavy metal ions was developed that is eco-friendly, sustainable, and efficient.
Collapse
Affiliation(s)
- Ali Rahmatpour
- Polymer Chemistry Research Laboratory, Faculty of Chemistry and Petroleum Science, Shahid Beheshti University, P.O. Box: 1983969411, Tehran, Iran.
| | - Naser Alijani
- Polymer Chemistry Research Laboratory, Faculty of Chemistry and Petroleum Science, Shahid Beheshti University, P.O. Box: 1983969411, Tehran, Iran
| |
Collapse
|
4
|
Bayir E. Development of a three-dimensional in vitro blood-brain barrier using the chitosan-alginate polyelectrolyte complex as the extracellular matrix. J BIOACT COMPAT POL 2023. [DOI: 10.1177/08839115231157096] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/18/2023]
Abstract
Polyelectrolyte complexes (PECs) consist of a spontaneous assembly of oppositely charged polysaccharides. PECs can be used to obtain a hydrogel tissue scaffold in tissue culture. In this study, it is aimed to use PEC as a blood-brain barrier (BBB) model scaffold. By mixing polycationic chitosan and polyanionic alginate solutions at a certain ratio it was obtained a 3D hydrogel scaffold and mimicked in vivo environment of the tissue. The PEC hydrogel scaffold’s chemical, physical, and mechanical characterizations were performed with FTIR, DSC, DMA, and Micro-CT analyses. In order to develop an in vitro BBB model, the human neuroblastoma cell line (SH-SY5Y) and mouse astrocyte cell line (C8-D1A) were mixed into a hydrogel, which is the abluminal side of the BBB. Human microvascular endothelial cells (HBEC-5i) were seeded on the hydrogel, and it was aimed to mimic the luminal side of the BBB. The characterization of the BBB model was determined by measuring the TEER, observation of the cell morphology with SEM, performing the permeability of Lucifer Yellow, and observation of tight junction proteins with immunofluorescence staining. As a result, HBEC-5i cells expressed tight junction proteins (ZO-1 and Claudin-5), showed TEER of 340 ± 22 Ω.cm2, and the Lucifer Yellow permeability of 7.4 × 10−7 ± 2.7 × 10−7 cm/s, which was suitable for use as an in vitro BBB model. Using a hydrogel PEC composed of chitosan and alginate as an extracellular matrix increased the direct interaction of endothelial cells, astrocytes, and neurons with each other and thus obtained a much less permeable model compared to other standard transwell models. Graphical abstract [Formula: see text]
Collapse
Affiliation(s)
- Ece Bayir
- Ege University Central Research Test and Analysis Laboratory Application and Research Center (EGE-MATAL), Ege University, Izmir, Turkey
| |
Collapse
|
5
|
Fan L, Ren Y, Emmert S, Vučković I, Stojanovic S, Najman S, Schnettler R, Barbeck M, Schenke-Layland K, Xiong X. The Use of Collagen-Based Materials in Bone Tissue Engineering. Int J Mol Sci 2023; 24:ijms24043744. [PMID: 36835168 PMCID: PMC9963569 DOI: 10.3390/ijms24043744] [Citation(s) in RCA: 11] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2023] [Revised: 02/08/2023] [Accepted: 02/10/2023] [Indexed: 02/16/2023] Open
Abstract
Synthetic bone substitute materials (BSMs) are becoming the general trend, replacing autologous grafting for bone tissue engineering (BTE) in orthopedic research and clinical practice. As the main component of bone matrix, collagen type I has played a critical role in the construction of ideal synthetic BSMs for decades. Significant strides have been made in the field of collagen research, including the exploration of various collagen types, structures, and sources, the optimization of preparation techniques, modification technologies, and the manufacture of various collagen-based materials. However, the poor mechanical properties, fast degradation, and lack of osteoconductive activity of collagen-based materials caused inefficient bone replacement and limited their translation into clinical reality. In the area of BTE, so far, attempts have focused on the preparation of collagen-based biomimetic BSMs, along with other inorganic materials and bioactive substances. By reviewing the approved products on the market, this manuscript updates the latest applications of collagen-based materials in bone regeneration and highlights the potential for further development in the field of BTE over the next ten years.
Collapse
Affiliation(s)
- Lu Fan
- NMI Natural and Medical Sciences Institute at the University of Tübingen, Markwiesenstr. 55, 72770 Reutlingen, Germany
- Institute of Biomedical Engineering, Department of Medical Technologies and Regenerative Medicine, Medical Faculty, Eberhard Karls University of Tübingen, Silcherstr. 7/1, 72076 Tübingen, Germany
| | - Yanru Ren
- Clinic and Policlinic for Dermatology and Venereology, University Medical Center Rostock, Strempelstraße 13, 18057 Rostock, Germany
| | - Steffen Emmert
- Clinic and Policlinic for Dermatology and Venereology, University Medical Center Rostock, Strempelstraße 13, 18057 Rostock, Germany
| | - Ivica Vučković
- Department of Maxillofacial Surgery, Clinic for Dental Medicine, 18000 Niš, Serbia
| | - Sanja Stojanovic
- Department for Cell and Tissue Engineering, Scientific Research Center for Biomedicine, Faculty of Medicine, University of Niš, 18000 Niš, Serbia
- Department of Biology and Human Genetics, Faculty of Medicine, University of Niš, 18000 Niš, Serbia
| | - Stevo Najman
- Department for Cell and Tissue Engineering, Scientific Research Center for Biomedicine, Faculty of Medicine, University of Niš, 18000 Niš, Serbia
- Department of Biology and Human Genetics, Faculty of Medicine, University of Niš, 18000 Niš, Serbia
| | - Reinhard Schnettler
- University Medical Centre, Justus Liebig University of Giessen, 35390 Giessen, Germany
| | - Mike Barbeck
- Clinic and Policlinic for Dermatology and Venereology, University Medical Center Rostock, Strempelstraße 13, 18057 Rostock, Germany
- BerlinAnalytix GmbH, Ullsteinstraße 108, 12109 Berlin, Germany
| | - Katja Schenke-Layland
- NMI Natural and Medical Sciences Institute at the University of Tübingen, Markwiesenstr. 55, 72770 Reutlingen, Germany
- Institute of Biomedical Engineering, Department of Medical Technologies and Regenerative Medicine, Medical Faculty, Eberhard Karls University of Tübingen, Silcherstr. 7/1, 72076 Tübingen, Germany
- Correspondence: (K.S.-L.); (X.X.); Tel.: +49-(0)-71215153010 (K.S.-L.); +49+(0)-71215153413 (X.X.)
| | - Xin Xiong
- NMI Natural and Medical Sciences Institute at the University of Tübingen, Markwiesenstr. 55, 72770 Reutlingen, Germany
- Correspondence: (K.S.-L.); (X.X.); Tel.: +49-(0)-71215153010 (K.S.-L.); +49+(0)-71215153413 (X.X.)
| |
Collapse
|
6
|
Gui Z, Xiang D. Hierarchically designed evaporators with dual-layered hydrogel/aerogel structure for efficient solar water evaporation. Sep Purif Technol 2023. [DOI: 10.1016/j.seppur.2023.123237] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
|
7
|
Hu X, Wang Y, Zhang L, Xu M. Simple ultrasonic-assisted approach to prepare polysaccharide-based aerogel for cell research and histocompatibility study. Int J Biol Macromol 2021; 188:411-420. [PMID: 34375664 DOI: 10.1016/j.ijbiomac.2021.08.034] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2021] [Revised: 07/23/2021] [Accepted: 08/04/2021] [Indexed: 11/19/2022]
Abstract
Salecan, a water-soluble microbial polysaccharide with attractive biocompatible characteristics, is very suitable for aerogel fabrication. However, the practical application of salecan-based aerogels for cell culture was limited by complicated preparation method, lack of cell anchorage signals, and the ability to modulate this properly. Here, a smart aerogel was designed by ultrasonic-assisted self-assembly of salecan and cationic starch (CAS) without any organic and toxic crosslinkers. The ultrasound waves generated a marked impact on self-assemble process by means of ultrasonic cavitation. Aerogel network was produced by strong electrostatic attractions between the polysaccharides. Especially, salecan/CAS ratio can be precisely modulated to tailor the hydrophilicity, mechanical stiffness, and morphologic property. The specific surface area of the aerogels gradually increased with the increase in salecan/CAS ratio. These aerogels were non-cytotoxic, and the incorporation of salecan into them promoted cell-matrix interactions by directionally supporting cell adhesion and proliferation. Most strikingly, in vivo experiment revealed that the histological features in the main organs of the mice were similar to those observed in the PBS-treated control group, and no sign of the histopathological abnormality or tissue destruction was observed, indicating the excellent histocompatibility of the aerogels. This study offered a new and powerful avenue to fabricate functional biomaterial.
Collapse
Affiliation(s)
- Xinyu Hu
- Institute of Chemical Industry of Forestry Products, Chinese Academy of Forestry, Key Lab. of Biomass Energy and Material, Jiangsu Province, Nanjing 210042, China; Research Institute of Forestry New Technology, Chinese Academy of Forestry, Beijing 100091, China; Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Jiangsu Province, Nanjing 210042, China; Key Lab. of Chemical Engineering of Forest Products, National Forestry and Grassland Administration, Beijing 100714, China; National Engineering Lab. for Biomass Chemical Utilization, Nanjing 210042, China.
| | - Yongmei Wang
- Institute of Chemical Industry of Forestry Products, Chinese Academy of Forestry, Key Lab. of Biomass Energy and Material, Jiangsu Province, Nanjing 210042, China
| | - Liangliang Zhang
- Institute of Chemical Industry of Forestry Products, Chinese Academy of Forestry, Key Lab. of Biomass Energy and Material, Jiangsu Province, Nanjing 210042, China
| | - Man Xu
- Institute of Chemical Industry of Forestry Products, Chinese Academy of Forestry, Key Lab. of Biomass Energy and Material, Jiangsu Province, Nanjing 210042, China
| |
Collapse
|
8
|
Levofloxacin-halloysite nanohybrid-loaded fibers based on poly (ethylene oxide) and sodium alginate: Fabrication, characterization, and antibacterial property. J Drug Deliv Sci Technol 2021. [DOI: 10.1016/j.jddst.2021.102598] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
|
9
|
Mishra B, Hossain S, Mohanty S, Gupta MK, Verma D. Fast acting hemostatic agent based on self-assembled hybrid nanofibers from chitosan and casein. Int J Biol Macromol 2021; 185:525-534. [PMID: 34174308 DOI: 10.1016/j.ijbiomac.2021.06.116] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2020] [Revised: 06/15/2021] [Accepted: 06/16/2021] [Indexed: 02/06/2023]
Abstract
Hemorrhage is a leading cause of preventable death in both military combat and civilian accidents. To overcome these challenges, an affordable and effective bandage is must required substance. A novel strategy is reported for developing chitosan-casein (CC) based self-assembled nanofibrous polyelectrolyte complex (PEC) for rapid blood clotting. The amide group (1630 cm-1) and phosphate group (910 cm-1) of chitosan-casein can form PEC at pH 8.2 ± 0.2. The PECs contain intertwined nanofibers (≤100 nm diameter) with a high surface area. Increasing chitosan percentage from 30% (CC30) to 50% (CC50) or 70% (CC70) results, increase in zeta potential of PEC from -9.14 ± 3.3 to 7.46 ± 3.7 and 14.8 ± 3.3 mV, respectively. Under in vitro conditions, the CC30, CC50, and CC70 PECs allow platelet adhesion and rapidly absorbs blood fluid to form mechanically stable blood clots within 9 ± 3, 16 ± 3, and 30 ± 4 s, respectively, which are better than Celox™ (90 ± 3 s). In vivo application of PEC (CC50) causes clotting within 37 ± 6 s of large (1 cm) arterial incision in rabbit models. The PEC is biocompatible with promising hemostatic efficiency. This is the first report of nanofibrous PEC from chitosan and casein for rapid clotting, to the best of our knowledge.
Collapse
Affiliation(s)
- Balaram Mishra
- Department of Biotechnology and Medical Engineering, National Institute of Technology Rourkela, Odisha 769008, India
| | - Sabir Hossain
- Department of Biotechnology and Medical Engineering, National Institute of Technology Rourkela, Odisha 769008, India
| | - Sibanwita Mohanty
- Department of Biotechnology and Medical Engineering, National Institute of Technology Rourkela, Odisha 769008, India
| | - Mukesh Kumar Gupta
- Department of Biotechnology and Medical Engineering, National Institute of Technology Rourkela, Odisha 769008, India
| | - Devendra Verma
- Department of Biotechnology and Medical Engineering, National Institute of Technology Rourkela, Odisha 769008, India.
| |
Collapse
|
10
|
An Overview of the Design of Chitosan-Based Fiber Composite Materials. JOURNAL OF COMPOSITES SCIENCE 2021. [DOI: 10.3390/jcs5060160] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Chitosan composite fibrous materials continue to generate significant interest for wastewater treatment, food packaging, and biomedical applications. This relates to the relatively high surface area and porosity of such fibrous chitosan materials that synergize with their unique physicochemical properties. Various methods are involved in the preparation of chitosan composite fibrous materials, which include the modification of the biopolymer that serve to alter the solubility of chitosan, along with post-treatment of the composite materials to improve the water stability or to achieve tailored functional properties. Two promising methods to produce such composite fibrous materials involve freeze-drying and electrospinning. Future developments of such composite fibrous materials demands an understanding of the various modes of preparation and methods of structural characterization of such materials. This review contributes to an understanding of the structure–property relationships of composite fibrous materials that contain chitosan, along with an overview of recent advancements concerning their preparation.
Collapse
|
11
|
Chakraborty S, Shet SM, Pereira MM, Nataraj SK, Mondal D. Designing biopolymer-based artificial peroxidase for oxidative removal of dibenzothiophene from a model diesel fuel. Int J Biol Macromol 2021; 183:1784-1793. [PMID: 34051253 DOI: 10.1016/j.ijbiomac.2021.05.141] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2021] [Revised: 05/21/2021] [Accepted: 05/21/2021] [Indexed: 12/25/2022]
Abstract
Naturally occurring peroxidases are important for living organisms and have manifold utility in industries. However, lack of stability in harsh reaction conditions hinders wide applicability of such enzymes. Thus, suitable alternative is vital which can endure severe reaction conditions. As a substitute of natural peroxidase, herein, biopolymer-based polyelectrolyte complexes (PECs) coordinated with Fen+ is proposed as macromolecular peroxidase mimicking systems. Three PECs were engineered via complexation of protonated chitosan and alginate with Fe2+ (Fe2+-PEC), Fe3+ (Fe3+-PEC), and Fe3O4 (Fe3O4-PEC), respectively. Computational study showed the Fe3+-PEC was highly stable with abundant electrostatic and intramolecular hydrogen bonding interactions. The versatility of the Fe-PECs as artificial peroxidase biocatalysts was probed by two types of peroxidase assays - ABTS oxidation in buffer systems (pH 4.0 and 7.0) and pyrogallol oxidation in organic solvents (acetonitrile, ethyl acetate and toluene). Overall, Fe3+-PEC showed remarkably high peroxidase activity both in aqueous buffers and in organic solvents, whereas, Fe3O4-PEC showed least catalytic activity. Finally, as a proof of concept, the ability of the biocatalyst to carry out deep oxidative desulphurization was demonstrated envisaging removal of dibenzothiophene from model fossil fuel in a sustainable way.
Collapse
Affiliation(s)
- Supratim Chakraborty
- Centre for Nano and Material Sciences, Jain University, Jain Global Campus, Kanakapura, Ramanagara, Bangalore, 562112, India
| | - Sachin M Shet
- Centre for Nano and Material Sciences, Jain University, Jain Global Campus, Kanakapura, Ramanagara, Bangalore, 562112, India
| | - Matheus M Pereira
- CICECO - Aveiro Institute of Materials, Chemistry Department, University of Aveiro, 3810-193 Aveiro, Portugal
| | - Sanna Kotrappanavar Nataraj
- Centre for Nano and Material Sciences, Jain University, Jain Global Campus, Kanakapura, Ramanagara, Bangalore, 562112, India; IMDEA Water Institute, Avenida Punto Com, 2, Parque CientíficoTecnológico de la Universidad de Alcalá, Alcalá de Henares, 28805 Madrid, Spain.
| | - Dibyendu Mondal
- Centre for Nano and Material Sciences, Jain University, Jain Global Campus, Kanakapura, Ramanagara, Bangalore, 562112, India.
| |
Collapse
|
12
|
Zhao X, Wang X, Lou T. Preparation of fibrous chitosan/sodium alginate composite foams for the adsorption of cationic and anionic dyes. JOURNAL OF HAZARDOUS MATERIALS 2021; 403:124054. [PMID: 33265059 DOI: 10.1016/j.jhazmat.2020.124054] [Citation(s) in RCA: 87] [Impact Index Per Article: 29.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/28/2020] [Revised: 08/25/2020] [Accepted: 09/19/2020] [Indexed: 05/27/2023]
Abstract
Natural polysaccharide is attractive for preparing the environmentally friendly and highly efficient adsorbent. However, to obtain an efficient amphoteric absorbent for dealing with complex wastewater is still challenging. Herein, fibrous chitosan/sodium alginate composite foams were prepared by lyophilization with ternary acetic acid/water/tetrahydrofuran solvents, which had suitable morphology of interconnected pores and microscale fibers for dye adsorption. The amphoteric composite foams showed high adsorption capacities for both anionic Acid Black-172 (817.0 mg/g) and cationic Methylene Blue (1488.1 mg/g), which were far superior to those of the control samples prepared with traditional solvents of acetic acid/water. The adsorption kinetics and isotherm data showed that the adsorption followed the pseudo-second-order and Langmuir model. Further thermodynamics analysis revealed the adsorption was a spontaneous process. Meanwhile, the foams achieved effective adsorption capacity of AB-172 and MB dyes under a wide range of environmental pH, and maintained high adsorption efficiency even after four cycles. The adsorption mechanism is chemisorption, where the adsorption capacities for the anionic and cationic dyes were dependent on the mass ratio of chitosan to sodium alginate. As a novel amphoteric adsorbent, the fibrous chitosan/sodium alginate composite foam shows the potential to remove both cationic and anionic dyes from wastewaters.
Collapse
Affiliation(s)
- Xiaolin Zhao
- College of Chemistry and Chemical Engineering, Qingdao University, Qingdao 266071, PR China
| | - Xuejun Wang
- College of Chemistry and Chemical Engineering, Qingdao University, Qingdao 266071, PR China
| | - Tao Lou
- College of Chemistry and Chemical Engineering, Qingdao University, Qingdao 266071, PR China.
| |
Collapse
|
13
|
Kiti K, Suwantong O. Bilayer wound dressing based on sodium alginate incorporated with curcumin-β-cyclodextrin inclusion complex/chitosan hydrogel. Int J Biol Macromol 2020; 164:4113-4124. [DOI: 10.1016/j.ijbiomac.2020.09.013] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2020] [Revised: 08/29/2020] [Accepted: 09/02/2020] [Indexed: 10/23/2022]
|
14
|
Saha B, Gordievskaya YD, De P, Kramarenko EY. Unusual Nanostructured Morphologies Enabled by Interpolyelectrolyte Complexation of Polyions Bearing Incompatible Nonionic Segments. Macromolecules 2020. [DOI: 10.1021/acs.macromol.0c02230] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Biswajit Saha
- Polymer Research Centre and Centre for Advanced Functional Materials, Department of Chemical Sciences, Indian Institute of Science Education and Research Kolkata, Nadia, Mohanpur 741246, West Bengal, India
| | - Yulia D. Gordievskaya
- Faculty of Physics, Lomonosov Moscow State University, Moscow 119991, Russia
- A. N. Nesmeyanov Institute of Organoelement Compounds RAS, Moscow 119991, Russia
| | - Priyadarsi De
- Polymer Research Centre and Centre for Advanced Functional Materials, Department of Chemical Sciences, Indian Institute of Science Education and Research Kolkata, Nadia, Mohanpur 741246, West Bengal, India
| | - Elena Yu. Kramarenko
- Faculty of Physics, Lomonosov Moscow State University, Moscow 119991, Russia
- A. N. Nesmeyanov Institute of Organoelement Compounds RAS, Moscow 119991, Russia
| |
Collapse
|
15
|
Formation of self-assembled polyelectrolyte complex hydrogel derived from salecan and chitosan for sustained release of Vitamin C. Carbohydr Polym 2020; 234:115920. [DOI: 10.1016/j.carbpol.2020.115920] [Citation(s) in RCA: 73] [Impact Index Per Article: 18.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2019] [Revised: 01/20/2020] [Accepted: 01/26/2020] [Indexed: 01/12/2023]
|
16
|
Nalini T, Basha SK, Mohamed Sadiq AM, Kumari VS, Kaviyarasu K. Development and characterization of alginate / chitosan nanoparticulate system for hydrophobic drug encapsulation. J Drug Deliv Sci Technol 2019. [DOI: 10.1016/j.jddst.2019.04.002] [Citation(s) in RCA: 68] [Impact Index Per Article: 13.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
|
17
|
Stopilha RT, Xavier-Júnior FH, De Vasconcelos CL, Fonseca JLC. Carboxymethylated-β-cyclodextrin/chitosan particles: bulk solids and aqueous dispersions. J DISPER SCI TECHNOL 2019. [DOI: 10.1080/01932691.2019.1611440] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Roberta T. Stopilha
- Instituto de Química, Universidade Federal do Rio Grande do Norte, Campus Universitário, Lagoa Nova, Natal, RN, Brazil
| | | | - Claudio L. De Vasconcelos
- Departamento de Química, Universidade do Estado do Rio Grande do Norte, Campus Central, Mossoró, RN, Brazil
| | - José L. C. Fonseca
- Instituto de Química, Universidade Federal do Rio Grande do Norte, Campus Universitário, Lagoa Nova, Natal, RN, Brazil
| |
Collapse
|
18
|
de Farias BS, Sant'Anna Cadaval Junior TR, de Almeida Pinto LA. Chitosan-functionalized nanofibers: A comprehensive review on challenges and prospects for food applications. Int J Biol Macromol 2019; 123:210-220. [DOI: 10.1016/j.ijbiomac.2018.11.042] [Citation(s) in RCA: 46] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2018] [Revised: 11/05/2018] [Accepted: 11/08/2018] [Indexed: 12/22/2022]
|
19
|
Xue C, Wilson LD. A structural study of self-assembled chitosan-based sponge materials. Carbohydr Polym 2019; 206:685-693. [DOI: 10.1016/j.carbpol.2018.10.111] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2018] [Revised: 10/29/2018] [Accepted: 10/30/2018] [Indexed: 12/01/2022]
|
20
|
Synthesis of Alginate-Chitosan Polyelectrolyte Complex (PEC) Membrane and Its Physical-Mechanical Properties. JURNAL KIMIA SAINS DAN APLIKASI 2019. [DOI: 10.14710/jksa.22.1.11-16] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Synthesis of alginate-chitosan polyelectrolyte membrane and the determination of the physical-mechanical properties were carried out. Alginate-chitosan polyelectrolyte complex membrane can be made by mixing hydrosol alginate and chitosan hydrosol with a ratio of 1: 1 at pH 5.28. Membranes of alginate-chitosan polyelectrolyte complexes produced have physical-mechanical properties including load, elongation and elasticity, water absorption and resistance better than the constituent polymers. The results of FTIR spectroscopy analysis showed that there was an electrostatic interaction between alginate and chitosan through protonated amine groups of chitosan and carboxylic groups from alginate. Surface analyses by SEM showed that morphology of alginate-chitosan polyelectrolyte complex membrane was different with single membrane morphology
Collapse
|
21
|
Complex coacervates from gelatin and octenyl succinic anhydride modified kudzu starch: Insights of formulation and characterization. Food Hydrocoll 2019. [DOI: 10.1016/j.foodhyd.2018.01.040] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
|
22
|
Effect of deep eutectic solvent in proton conduction and thermal behaviour of chitosan-based membrane. J Mol Liq 2018. [DOI: 10.1016/j.molliq.2018.08.102] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
|
23
|
Oliveira MB, Bastos HXS, Mano JF. Sequentially Moldable and Bondable Four-Dimensional Hydrogels Compatible with Cell Encapsulation. Biomacromolecules 2018; 19:2742-2749. [PMID: 29698598 PMCID: PMC6450509 DOI: 10.1021/acs.biomac.8b00337] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Hydrogels have captivated the attention of several research and industry segments, including bioengineering, tissue engineering, implantable/wearable sensors and actuators, bioactive agent delivery, food processing, and industrial processes optimization. A common limitation of these systems is their fixed shape. The concept of hydrogel moldability is often assigned to the injectability potential of liquid precursors, and this feature is often lost right after hydrogel formation. Hydrogel modulation is a recent trend that advocates the importance of designing materials with shape fitting ability targeting on-demand responses or defect filling purposes. Here, we present a compliant and cell encapsulation-compatible hydrogel prepared from unmodified natural origin polymers with the ability to undergo extreme sequential shape alterations with high recovery of its mechanical properties. Different fragments of these hydrogels could be bonded together in spatiotemporally controlled shape- and formulation-morphing structures. This material is prepared with affordable off-the-shelf polysaccharides of natural origin using a mild and safe processing strategy based solely on polyelectrolyte complexation followed by an innovative partial coacervate compaction and dehydration step. These unique hydrogels hold potential for multifield industrial and healthcare applications. In particular, they may find application as defect filling agents or highly compliant wound healing patches for cargo release and/or cell delivery for tissue regeneration and cell-based therapies.
Collapse
Affiliation(s)
- Mariana B. Oliveira
- Department of Chemistry, CICECO – Aveiro Institute of Materials. University of Aveiro. 3810-193 Aveiro, Portugal
| | - Henrique X. S. Bastos
- Department of Chemistry, CICECO – Aveiro Institute of Materials. University of Aveiro. 3810-193 Aveiro, Portugal
| | - João F. Mano
- Department of Chemistry, CICECO – Aveiro Institute of Materials. University of Aveiro. 3810-193 Aveiro, Portugal
| |
Collapse
|
24
|
Wasupalli GK, Verma D. Molecular interactions in self-assembled nano-structures of chitosan-sodium alginate based polyelectrolyte complexes. Int J Biol Macromol 2018; 114:10-17. [DOI: 10.1016/j.ijbiomac.2018.03.075] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2017] [Revised: 03/07/2018] [Accepted: 03/15/2018] [Indexed: 10/17/2022]
|
25
|
|
26
|
Ren H, Cui Y, Li A, Qiu D. Bioactive glass sol as a dual function additive for chitosan-alginate hybrid scaffold. CHINESE CHEM LETT 2018. [DOI: 10.1016/j.cclet.2018.01.023] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
|
27
|
Joddar B, Tasnim N, Thakur V, Kumar A, McCallum RW, Chattopadhyay M. Delivery of Mesenchymal Stem Cells from Gelatin-Alginate Hydrogels to Stomach Lumen for Treatment of Gastroparesis. Bioengineering (Basel) 2018; 5:E12. [PMID: 29414870 PMCID: PMC5874878 DOI: 10.3390/bioengineering5010012] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2018] [Revised: 02/02/2018] [Accepted: 02/04/2018] [Indexed: 12/12/2022] Open
Abstract
Gastroparesis (GP) is associated with depletion of interstitial cells of Cajal (ICCs) and enteric neurons, which leads to pyloric dysfunction followed by severe nausea, vomiting and delayed gastric emptying. Regenerating these fundamental structures with mesenchymal stem cell (MSC) therapy would be helpful to restore gastric function in GP. MSCs have been successfully used in animal models of other gastrointestinal (GI) diseases, including colitis. However, no study has been performed with these cells on GP animals. In this study, we explored whether mouse MSCs can be delivered from a hydrogel scaffold to the luminal surfaces of mice stomach explants. Mouse MSCs were seeded atop alginate-gelatin, coated with poly-l-lysine. These cell-gel constructs were placed atop stomach explants facing the luminal side. MSCs grew uniformly all across the gel surface within 48 h. When placed atop the lumen of the stomach, MSCs migrated from the gels to the tissues, as confirmed by positive staining with vimentin and N-cadherin. Thus, the feasibility of transplanting a cell-gel construct to deliver stem cells in the stomach wall was successfully shown in a mice stomach explant model, thereby making a significant advance towards envisioning the transplantation of an entire tissue-engineered 'gastric patch' or 'microgels' with cells and growth factors.
Collapse
Affiliation(s)
- Binata Joddar
- Inspired Materials & Stem-Cell Based Tissue Engineering Laboratory (IMSTEL), Department of Metallurgical, Materials and Biomedical Engineering, University of Texas at El Paso, 500 W University Avenue, El Paso, TX 79968, USA.
- Border Biomedical Research Center, University of Texas at El Paso, 500 W University Avenue, El Paso, TX 79968, USA.
| | - Nishat Tasnim
- Inspired Materials & Stem-Cell Based Tissue Engineering Laboratory (IMSTEL), Department of Metallurgical, Materials and Biomedical Engineering, University of Texas at El Paso, 500 W University Avenue, El Paso, TX 79968, USA.
| | - Vikram Thakur
- Department of Biomedical Sciences, Center of Emphasis in Diabetes and Metabolism, Texas Tech University Health Sciences Center, 5001 El Paso Drive, El Paso, TX 79905, USA.
| | - Alok Kumar
- Inspired Materials & Stem-Cell Based Tissue Engineering Laboratory (IMSTEL), Department of Metallurgical, Materials and Biomedical Engineering, University of Texas at El Paso, 500 W University Avenue, El Paso, TX 79968, USA.
| | - Richard W McCallum
- Department of Internal Medicine, Paul L. Foster School of Medicine, Texas Tech University Health Sciences Center, 4800 Alberta Avenue, El Paso, TX 79905, USA.
| | - Munmun Chattopadhyay
- Department of Biomedical Sciences, Center of Emphasis in Diabetes and Metabolism, Texas Tech University Health Sciences Center, 5001 El Paso Drive, El Paso, TX 79905, USA.
| |
Collapse
|
28
|
Sun W, Chen G, Wang F, Qin Y, Wang Z, Nie J, Ma G. Polyelectrolyte-complex multilayer membrane with gradient porous structure based on natural polymers for wound care. Carbohydr Polym 2018; 181:183-190. [DOI: 10.1016/j.carbpol.2017.10.068] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2017] [Revised: 10/12/2017] [Accepted: 10/20/2017] [Indexed: 10/18/2022]
|
29
|
Cai N, Zeng H, Fu J, Chan V, Chen M, Li H, Yu F. Synergistic effect of graphene oxide-silver nanofillers on engineering performances of polyelectrolyte complex nanofiber membranes. J Appl Polym Sci 2018. [DOI: 10.1002/app.46238] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Ning Cai
- Key Laboratory for Green Chemical Process of Ministry of Education, Hubei Key Laboratory of Novel Reactor & Green Chemical Technology, School of Chemical Engineering and Pharmacy; Wuhan Institute of Technology; Wuhan 430073 China
| | - Huan Zeng
- Key Laboratory for Green Chemical Process of Ministry of Education, Hubei Key Laboratory of Novel Reactor & Green Chemical Technology, School of Chemical Engineering and Pharmacy; Wuhan Institute of Technology; Wuhan 430073 China
| | - Jing Fu
- Key Laboratory for Green Chemical Process of Ministry of Education, Hubei Key Laboratory of Novel Reactor & Green Chemical Technology, School of Chemical Engineering and Pharmacy; Wuhan Institute of Technology; Wuhan 430073 China
| | - Vincent Chan
- Department of Chemical Engineering; Khalifa University; Abu Dhabi 127788 UAE
| | - Mei Chen
- Key Laboratory for Green Chemical Process of Ministry of Education, Hubei Key Laboratory of Novel Reactor & Green Chemical Technology, School of Chemical Engineering and Pharmacy; Wuhan Institute of Technology; Wuhan 430073 China
| | - Hui Li
- Key Laboratory for Green Chemical Process of Ministry of Education, Hubei Key Laboratory of Novel Reactor & Green Chemical Technology, School of Chemical Engineering and Pharmacy; Wuhan Institute of Technology; Wuhan 430073 China
| | - Faquan Yu
- Key Laboratory for Green Chemical Process of Ministry of Education, Hubei Key Laboratory of Novel Reactor & Green Chemical Technology, School of Chemical Engineering and Pharmacy; Wuhan Institute of Technology; Wuhan 430073 China
| |
Collapse
|
30
|
Shi C, Lv C, Wu L, Hou X. Porous chitosan/hydroxyapatite composite membrane for dyes static and dynamic removal from aqueous solution. JOURNAL OF HAZARDOUS MATERIALS 2017; 338:241-249. [PMID: 28570878 DOI: 10.1016/j.jhazmat.2017.05.022] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/14/2017] [Revised: 05/05/2017] [Accepted: 05/12/2017] [Indexed: 06/07/2023]
Abstract
The unique characteristics of Chitosan (CS) such as resource abundance, good biocompatibility, film-forming ability and sufficient sites (NH2 and OH) for adsorption of heavy metals or organic pollutants make CS-based membranes a promising membrane adsorbent. In this work, a porous Chitosan/Hydroxyapatite (CS/HA) membrane with a sponge-like surface and a three-dimensional interpenetrated porous structure of about mean pore size less than 10μm was developed. The most striking advantage of the proposed membrane lies on the integration of appreciably high adsorption capacity (as compared with current CS-based membranes, also 2.5 times and 4 times higher than that of non-porous CS/HA membrane and the commercially available activate carbon) and the high-speed dynamic dye removal (98% or even better in less than 15min). Besides, the synthesis protocol for the proposed membrane is also much simpler, environmental-friendly and economical. Moreover, the proposed membrane also featured repeated dye removal (above 80% after 5 cycles of dynamic adsorption at dye concentration of 150mgL-1). All the above advantages indicated the intriguing potential of the porous membrane in practical wastewater treatment.
Collapse
Affiliation(s)
- Chaoting Shi
- Analytical & Testing Center, Sichuan University, Chengdu, Sichuan 610064, China
| | - Caizhi Lv
- Analytical & Testing Center, Sichuan University, Chengdu, Sichuan 610064, China
| | - Lan Wu
- Analytical & Testing Center, Sichuan University, Chengdu, Sichuan 610064, China.
| | - Xiandeng Hou
- Analytical & Testing Center, Sichuan University, Chengdu, Sichuan 610064, China; College of Chemistry, Sichuan University, Chengdu, 610064, China
| |
Collapse
|
31
|
Pham P, Vo T, Luo X. Steering air bubbles with an add-on vacuum layer for biopolymer membrane biofabrication in PDMS microfluidics. LAB ON A CHIP 2017; 17:248-255. [PMID: 27942655 DOI: 10.1039/c6lc01362g] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
Membrane functionality is crucial in microfluidics for realizing operations such as filtration, separation, concentration, signaling among cells and gradient generation. Currently, common methods often sandwich commercially available membranes in multi-layer devices, or use photopolymerization or temperature-induced gelation to fabricate membrane structures in one-layer devices. Biofabrication offers an alternative to forming membrane structures with biomimetic materials and mechanisms in mild conditions. We have recently developed a biofabrication strategy to form parallel biopolymer membranes in gas-permeable polydimethylsiloxane (PDMS) microfluidic devices, which used positive pressure to dissipate air bubbles through PDMS to initiate membrane formation but required careful pressure balancing between two flows. Here, we report a technical innovation by simply placing as needed an add-on PDMS vacuum layer on PDMS microfluidic devices to dissipate air bubbles and guide the biofabrication of biopolymer membranes. Vacuuming through PDMS was simply achieved by either withdrawing a syringe or releasing a squeezed nasal aspirator. Upon vacuuming, air bubbles dissipated within minutes, membranes were effortlessly formed, and the add-on vacuum layer can be removed. Subsequent membrane growth could be robustly controlled with the flows and pH of solutions. This new process is user-friendly and has achieved a 100% success rate in more than 200 trials in membrane biofabrication.
Collapse
Affiliation(s)
- Phu Pham
- Department of Mechanical Engineering, The Catholic University of America, Washington, D.C. 20064, USA.
| | - Thanh Vo
- Department of Mechanical Engineering, The Catholic University of America, Washington, D.C. 20064, USA.
| | - Xiaolong Luo
- Department of Mechanical Engineering, The Catholic University of America, Washington, D.C. 20064, USA.
| |
Collapse
|
32
|
Li XQ, Tang RC. Crosslinked and Dyed Chitosan Fiber Presenting Enhanced Acid Resistance and Bioactivities. Polymers (Basel) 2016; 8:E119. [PMID: 30979211 PMCID: PMC6432234 DOI: 10.3390/polym8040119] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2016] [Revised: 03/27/2016] [Accepted: 03/29/2016] [Indexed: 12/18/2022] Open
Abstract
The application of biodegradable chitosan fiber for healthy and hygienic textiles is limited due to its poor acid resistance in wet processing and poor antioxidant activity. In order to prepare chitosan fiber with good acid resistance and high antioxidant activity, chitosan fiber was first crosslinked by a water-soluble aziridine crosslinker, and then dyed with natural lac dye consisting of polyphenolic anthraquinone compounds. The main application conditions and crosslinking mechanism of the aziridine crosslinker, the adsorption mechanism and building-up property of lac dye on the crosslinked fiber, and the effects of crosslinking and dyeing on the antioxidant and antibacterial activities of chitosan fiber were studied. The crosslinked fiber exhibited greatly reduced weight loss in acidic solution, and possessed excellent acid resistance. Lac dye displayed a very high adsorption capability on the crosslinked fiber and a high utilization rate under weakly acidic medium. The Langmuir⁻Nernst isotherm was the best model to describe the adsorption behavior of lac dye, and Langmuir adsorption had great contribution to total adsorption. Lac dyeing imparted good antioxidant activity to chitosan fiber. Crosslinking and dyeing had no impact on the good inherent antibacterial activity of chitosan fiber.
Collapse
Affiliation(s)
- Xiao-Qiong Li
- College of Textile and Clothing Engineering, Soochow University, 199 Renai Road, Suzhou 215123, China.
| | - Ren-Cheng Tang
- National Engineering Laboratory for Modern Silk, College of Textile and Clothing Engineering, Soochow University, 199 Renai Road, Suzhou 215123, China.
| |
Collapse
|
33
|
|
34
|
Zhang X, Zhang Y, Ma G, Yang D, Nie J. The effect of the prefrozen process on properties of a chitosan/hydroxyapatite/poly(methyl methacrylate) composite prepared by freeze drying method used for bone tissue engineering. RSC Adv 2015. [DOI: 10.1039/c5ra14549j] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The process of different prefrozen methods to prepare a CS–HA/PMMA scaffold for bone tissue engineering.
Collapse
Affiliation(s)
- Xueqin Zhang
- State Key Laboratory of Chemical Resource Engineering
- Beijing Laboratory of Biomedical Materials
- Beijing University of Chemical Technology
- Beijing 100029
- PR China
| | - Yuxuan Zhang
- State Key Laboratory of Chemical Resource Engineering
- Beijing Laboratory of Biomedical Materials
- Beijing University of Chemical Technology
- Beijing 100029
- PR China
| | - Guiping Ma
- State Key Laboratory of Chemical Resource Engineering
- Beijing Laboratory of Biomedical Materials
- Beijing University of Chemical Technology
- Beijing 100029
- PR China
| | - Dongzhi Yang
- State Key Laboratory of Chemical Resource Engineering
- Beijing Laboratory of Biomedical Materials
- Beijing University of Chemical Technology
- Beijing 100029
- PR China
| | - Jun Nie
- State Key Laboratory of Chemical Resource Engineering
- Beijing Laboratory of Biomedical Materials
- Beijing University of Chemical Technology
- Beijing 100029
- PR China
| |
Collapse
|