1
|
Multi-responsive poly N-isopropylacrylamide/poly N-tert-butylacrylamide nanocomposite hydrogel with the ability to be adsorbed on the chitosan film as an active antibacterial material. Int J Biol Macromol 2022; 208:1019-1028. [PMID: 35381289 DOI: 10.1016/j.ijbiomac.2022.03.198] [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: 09/27/2021] [Revised: 03/26/2022] [Accepted: 03/29/2022] [Indexed: 11/20/2022]
Abstract
Nanocomposite hydrogel composed of Poly N-isopropylacrylamide (PNIPAM), poly N-tert-Butylacrylamide (PBAM) and poly acrylic acid (PAA) was synthesized by free radical polymerization, and then thymol was embedded in it, to design an active antibacterial material that could control release. The characterization of products used SEM, AFM, FTIR, Zeta sizer to analyze the sensitivity of nanoparticles to pH, temperature and salt ions, and the agar diffusion method was used to determine the antibacterial effect of the polymers. The results showed that nanoparticles had pH, temperature and salt ion responsiveness, PNIPAM/PBAM (65:35) nanoparticles loaded thymol had longer release time (more than 24 h) at lower temperature than that (around 6 h) at high temperature. In addition, the nanoparticles could also be adsorbed on the chitosan film, which makes it have a wider range of applications. All thymol-loaded nanoparticles showed antibacterial activity against both B. subtilis and E. coli, while the chitosan film adsorbed nanoparticles showed weak effect, which was related to the controlled and slow release of bacteriostatic agents. Thus, these copolymers have potential value in the development and application of bacteriostatic packaging films for food.
Collapse
|
2
|
Gu P, Li B, Wu B, Wang J, Müller-Buschbaum P, Zhong Q. Controlled Hydration, Transition, and Drug Release Realized by Adjusting Layer Thickness in Alginate-Ca 2+/poly( N-isopropylacrylamide) Interpenetrating Polymeric Network Hydrogels on Cotton Fabrics. ACS Biomater Sci Eng 2020; 6:5051-5060. [PMID: 33455298 DOI: 10.1021/acsbiomaterials.0c00756] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
The controlled hydration, transition, and drug release are realized by adjusting layer thickness in thermoresponsive interpenetrating polymeric network (IPN) hydrogels on cotton fabrics. IPN hydrogels are synthesized by sodium alginate (SA) and poly(N-isopropylacrylamide) (PNIPAM) with a ratio of 1:5/% (w/v). The cotton-fabric-supported IPN hydrogels with a thickness of 1000 μm exhibit a transition temperature (TT) at 35.2 °C. When the hydrogel thicknesses are thinned to 500 and 250 μm, the TTs are reduced to 34.8 and 34.1 °C, respectively. Interestingly, the morphology of IPN hydrogels switches from a well-defined honeycomb-like network structure (1000 μm) to a densely packed layer structure (250 μm). The thinner layers not only present a smaller extent of hydration and collapse but also require longer time to reach an equilibrium state, which can be attributed to the more pronounced hindrance of the chain rearrangement by the cotton fabrics. To address the influence of layer thickness on the drug release, we compare the release rate and cumulative release percentage of the test drugs tetracycline hydrochloride (TCH) and levofloxacin hydrochloride (LH) between pure IPN hydrogels and cotton-fabric-supported IPN hydrogels (250, 500, and 1000 μm) at 25 °C (below the TT) and 37 °C (above the TT). Because of the compressive stress from the collapsed hydrogels, a higher release is observed in both hydrogels when the temperature is above TT. The cotton fabric induces a slower and less prominent drug release in IPN hydrogels. Thus, combining the obtained correlation between the transition and hydrogels layer thickness, the drug release in cotton-fabric-supported IPN hydrogels can be regulated by the layer thickness, which appears especially suitable for a controlled release in wound dressing applications.
Collapse
Affiliation(s)
- Pan Gu
- Key Laboratory of Advanced Textile Materials & Manufacturing Technology, Ministry of Education, Zhejiang Sci-Tech University, Hangzhou 310018, China
| | - Bing Li
- Key Laboratory of Advanced Textile Materials & Manufacturing Technology, Ministry of Education, Zhejiang Sci-Tech University, Hangzhou 310018, China
| | - Bisheng Wu
- Key Laboratory of Advanced Textile Materials & Manufacturing Technology, Ministry of Education, Zhejiang Sci-Tech University, Hangzhou 310018, China
| | - Jiping Wang
- Shanghai University of Engineering Science, 333 Long Teng Road, Shanghai 201620, China
| | - Peter Müller-Buschbaum
- Technische Universität München, Physik-Department, Lehrstuhl für Funktionelle Materialien, James-Franck-Strasse 1, Garching 85748, Germany.,Heinz Maier-Leibnitz Zentrum (MLZ), Technische Universität München, Lichtenbergstrasse 1, Garching 85748, Germany
| | - Qi Zhong
- Key Laboratory of Advanced Textile Materials & Manufacturing Technology, Ministry of Education, Zhejiang Sci-Tech University, Hangzhou 310018, China.,Technische Universität München, Physik-Department, Lehrstuhl für Funktionelle Materialien, James-Franck-Strasse 1, Garching 85748, Germany
| |
Collapse
|
3
|
Parada GA, Yuk H, Liu X, Hsieh AJ, Zhao X. Impermeable Robust Hydrogels via Hybrid Lamination. Adv Healthc Mater 2017; 6. [PMID: 28714269 DOI: 10.1002/adhm.201700520] [Citation(s) in RCA: 52] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2017] [Revised: 06/10/2017] [Indexed: 01/08/2023]
Abstract
Hydrogels have been proposed for sensing, drug delivery, and soft robotics applications, yet most of these materials suffer from low mechanical robustness and high permeability to small molecules, limiting their widespread use. This study reports a general strategy and versatile method to fabricate robust, highly stretchable, and impermeable hydrogel laminates via hybrid lamination of an elastomer layer bonded between hydrogel layers. By controlling the layers' composition and thickness, it is possible to tune the stiffness of the impermeable hydrogels without sacrificing the stretchability. These hydrogel laminates exhibit ultralow surface coefficients of friction and, unlike common single-material hydrogels, do not allow diffusion of various molecules across the structure due to the presence of the elastomer layer. This feature is then used to release different model drugs and, in a subsequent experiment, to sense different pH conditions on the two sides of the hydrogel laminate. A potential healthcare application is shown using the presented method to coat medical devices (catheter, tubing, and condom) with hydrogel, to allow for drug release and sensing of environmental conditions for gastrointestinal or urinary tract.
Collapse
Affiliation(s)
- German A. Parada
- Soft Active Materials Laboratory Department of Mechanical Engineering Massachusetts Institute of Technology Cambridge MA 02139 USA
- Department of Chemical Engineering Massachusetts Institute of Technology Cambridge MA 02139 USA
| | - Hyunwoo Yuk
- Soft Active Materials Laboratory Department of Mechanical Engineering Massachusetts Institute of Technology Cambridge MA 02139 USA
| | - Xinyue Liu
- Soft Active Materials Laboratory Department of Mechanical Engineering Massachusetts Institute of Technology Cambridge MA 02139 USA
| | - Alex J. Hsieh
- U.S. Army Research Laboratory RDRL‐WMM‐G Aberdeen Proving Ground MD 21005‐5069 USA
| | - Xuanhe Zhao
- Soft Active Materials Laboratory Department of Mechanical Engineering Massachusetts Institute of Technology Cambridge MA 02139 USA
| |
Collapse
|
4
|
Mateescu A, Wang Y, Dostalek J, Jonas U. Thin hydrogel films for optical biosensor applications. MEMBRANES 2012; 2:40-69. [PMID: 24957962 PMCID: PMC4021880 DOI: 10.3390/membranes2010040] [Citation(s) in RCA: 95] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/31/2011] [Revised: 01/18/2012] [Accepted: 01/29/2012] [Indexed: 12/21/2022]
Abstract
Hydrogel materials consisting of water-swollen polymer networks exhibit a large number of specific properties highly attractive for a variety of optical biosensor applications. This properties profile embraces the aqueous swelling medium as the basis of biocompatibility, non-fouling behavior, and being not cell toxic, while providing high optical quality and transparency. The present review focuses on some of the most interesting aspects of surface-attached hydrogel films as active binding matrices in optical biosensors based on surface plasmon resonance and optical waveguide mode spectroscopy. In particular, the chemical nature, specific properties, and applications of such hydrogel surface architectures for highly sensitive affinity biosensors based on evanescent wave optics are discussed. The specific class of responsive hydrogel systems, which can change their physical state in response to externally applied stimuli, have found large interest as sophisticated materials that provide a complex behavior to hydrogel-based sensing devices.
Collapse
Affiliation(s)
- Anca Mateescu
- Foundation for Research and Technology-Hellas (FORTH), Institute of Electronic Structure & Laser (IESL), Bio-Organic Materials Chemistry Laboratory (BOMCLab), Nikolaou Plastira 100, Vassilika Vouton, Heraklion 71110, Crete, Greece.
| | - Yi Wang
- AIT Austrian Institute of Technology GmbH, Muthgasse 11, Vienna 1190, Austria.
| | - Jakub Dostalek
- AIT Austrian Institute of Technology GmbH, Muthgasse 11, Vienna 1190, Austria.
| | - Ulrich Jonas
- Foundation for Research and Technology-Hellas (FORTH), Institute of Electronic Structure & Laser (IESL), Bio-Organic Materials Chemistry Laboratory (BOMCLab), Nikolaou Plastira 100, Vassilika Vouton, Heraklion 71110, Crete, Greece.
| |
Collapse
|
5
|
Wang L, Zhang X, Li B, Sun P, Yang J, Xu H, Liu Y. Superhydrophobic and ultraviolet-blocking cotton textiles. ACS APPLIED MATERIALS & INTERFACES 2011; 3:1277-1281. [PMID: 21438599 DOI: 10.1021/am200083z] [Citation(s) in RCA: 76] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Cotton textile was coated with ZnO@SiO(2) nanorods in order to obtain superhydrophobic and ultraviolet (UV)-blocking properties. The coating process was conducted in mild conditions, which involved the low-temperature preparation of ZnO seeds, hydrothermal growth of ZnO nanorods, bioinspired layer-by-layer deposition of a SiO(2) shell on the surface of ZnO nanorods, and hydrophobic modification of ZnO@SiO(2) nanorods with octadecyltrimethoxysilane. Despite the highly curved morphology of cotton fibers, the ZnO@SiO(2) nanorods coated the textile densely and uniformly. The treated cotton textile was found to have a large UV protection factor (UPF = 101.51) together with UV-durable superhydrophobicity, as determined by contact-angle measurement under long-term UV irradiation. The good UV-blocking property can be ascribed to the high UV absorbance and scattering properties of ZnO nanorods, and the UV-durable superhydrophobicity is a result of suppression of the photoactivity of ZnO nanorods by a SiO(2) shell.
Collapse
Affiliation(s)
- Lingling Wang
- Center for Advanced Optoelectronic Functional Materials Research and Key Laboratory for UV-Emitting Materials and Technology of Ministry of Education, Northeast Normal University, 5268 Renmin Street, Changchun 130024, People's Republic of China
| | | | | | | | | | | | | |
Collapse
|
6
|
Immich APS, de Araújo PHH, Catalani LH, de Souza SMAGU, de Souza AAU. Coating of cotton yarn with poly(vinyl alcohol) and poly(N-vinyl-2-pyrrolidone) crosslinked via ultraviolet radiation. J Appl Polym Sci 2010. [DOI: 10.1002/app.32980] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
|