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Thermo-Responsive Hydrophilic Support for Polyamide Thin-Film Composite Membranes with Competitive Nanofiltration Performance. Polymers (Basel) 2022; 14:polym14163376. [PMID: 36015632 PMCID: PMC9414575 DOI: 10.3390/polym14163376] [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: 07/20/2022] [Revised: 08/11/2022] [Accepted: 08/13/2022] [Indexed: 11/17/2022] Open
Abstract
Poly(N-isopropylacrylamide) (PNIPAAm) was introduced into a polyethylene terephthalate (PET) nonwoven fabric to develop novel support for polyamide (PA) thin-film composite (TFC) membranes without using a microporous support layer. First, temperature-responsive PNIPAAm hydrogel was prepared by reactive pore-filling to adjust the pore size of non-woven fabric, creating hydrophilic support. The developed PET-based support was then used to fabricate PA TFC membranes via interfacial polymerization. SEM–EDX and AFM results confirmed the successful fabrication of hydrogel-integrated non-woven fabric and PA TFC membranes. The newly developed PA TFC membrane demonstrated an average water permeability of 1 L/m2 h bar, and an NaCl rejection of 47.0% at a low operating pressure of 1 bar. The thermo-responsive property of the prepared membrane was studied by measuring the water contact angle (WCA) below and above the lower critical solution temperature (LCST) of the PNIPAAm hydrogel. Results proved the thermo-responsive behavior of the prepared hydrogel-filled PET-supported PA TFC membrane and the ability to tune the membrane flux by changing the operating temperature was confirmed. Overall, this study provides a novel method to fabricate TFC membranes and helps to better understand the influence of the support layer on the separation performance of TFC membranes.
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Liu SJ, Liao SC. Surface Modification of Bamboo Charcoal by O 2 Plasma Treatment and UV-Grafted Thermo-Sensitive AgNPs Hydrogel to Improve Antibacterial Properties in Biomedical Application. NANOMATERIALS (BASEL, SWITZERLAND) 2021; 11:2697. [PMID: 34685136 PMCID: PMC8537071 DOI: 10.3390/nano11102697] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/02/2021] [Revised: 10/04/2021] [Accepted: 10/08/2021] [Indexed: 12/28/2022]
Abstract
With the advancement of science and modern medical technology, more and more medical materials and implants are used in medical treatment and to improve human life. The safety of invasive medical materials and the prevention of infection are gradually being valued. Therefore, avoiding operation failure or wound infection and inflammation caused by surgical infection is one of the most important topics in current medical technology. Silver nanoparticles (AgNPs) have minor irritation and toxicity to cells and have a broad-spectrum antibacterial effect without causing bacterial resistance and other problems. They are also less toxic to the human body. Bamboo charcoal (BC) is a bioinert material with a porous structure, light characteristics, and low density, like bone quality. It can be used as a lightweight bone filling material. However, it does not have any antibacterial function. This study synthesized AgNPs under the ultraviolet (UV) photochemical method by reducing silver nitrate with sodium citrate. The formation and distribution of AgNPs were confirmed by UV-visible spectroscopy and X-ray diffraction measurement (XRD). The BC was treated by O2 plasma to increase the number of polar functional groups on the surface. Then, UV light-induced graft polymerization of N-isopropyl acrylamide (NIPAAm) and AgNPs were applied onto the BC to immobilize thermos-/antibacterial composite hydrogels on the BC surface. The structures and properties of thermos-/antibacterial composite hydrogel-modified BC surface were characterized by Scanning Electron Microscopy (SEM), Fourier Transform Infrared spectrum (FT-IR), and X-ray photoelectron spectroscopy (XPS). The results show that thermos-/antibacterial composite hydrogels were then successfully grafted onto BC. SEM observations showed that the thermos-/antibacterial composite hydrogels formed a membrane structure between the BC. The biocompatibility of the substrate was evaluated by Alamar Blue cell viability assay and antibacterial test in vitro.
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Affiliation(s)
- Shih-Ju Liu
- Design and Materials for Medical Equipment and Devices, Da-Yeh University Changhua, Changhua 515006, Taiwan;
| | - Shu-Chuan Liao
- Department of Biomedical Engineering, Da-Yeh University Changhua, Changhua 515006, Taiwan
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Ghazali SK, Adrus N, Majid RA, Ali F, Jamaluddin J. UV-LED as a New Emerging Tool for Curable Polyurethane Acrylate Hydrophobic Coating. Polymers (Basel) 2021; 13:487. [PMID: 33557118 PMCID: PMC7913878 DOI: 10.3390/polym13040487] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2020] [Revised: 01/27/2021] [Accepted: 01/29/2021] [Indexed: 12/05/2022] Open
Abstract
The elimination of mercury, low energy consumption, and low heat make the ultraviolet light-emitting diode (UV-LED) system emerge as a promising alternative to conventional UV-mercury radiation coating. Hence, a series of hydrophobic coatings based on urethane acrylate oligomer and fluorinated monomer via UV-LED photopolymerisation was designed in this paper. The presence of fluorine component at 1160 cm-1, 1235 cm-1, and 1296 cm-1 was confirmed by Fourier Transform Infra-Red spectroscopy. A considerably high degree C=C conversion (96-98%) and gel fraction (95-93%) verified the application of UV-LED as a new technique in radiation coating. It is well-accepted that fluorinated monomer can change the surface wettability as the water contact angle of the coating evolved from 88.4° to 121.2°, which, in turn, reduced its surface free energy by 70.5%. Hence, the hydrophobicity of the coating was governed by the migration of the fluorine component to the coating surface as validated by scanning electron and atomic force microscopies. However, above 4 phr of fluorinated monomer, the transparency of the cured coating examined by UV-visible spectroscopy experienced approximately a 16% reduction. In summary, the utilisation of UV-LED was a great initiative to develop green aspect in photopolymerisation, particularly in coating technology.
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Affiliation(s)
- Siti Khairunisah Ghazali
- School of Chemical and Energy Engineering, Faculty of Engineering, Universiti Teknologi Malaysia, Johor, Skudai 81310, Malaysia; (S.K.G.); (N.A.); (R.A.M.)
| | - Nadia Adrus
- School of Chemical and Energy Engineering, Faculty of Engineering, Universiti Teknologi Malaysia, Johor, Skudai 81310, Malaysia; (S.K.G.); (N.A.); (R.A.M.)
| | - Rohah A. Majid
- School of Chemical and Energy Engineering, Faculty of Engineering, Universiti Teknologi Malaysia, Johor, Skudai 81310, Malaysia; (S.K.G.); (N.A.); (R.A.M.)
| | - Fathilah Ali
- Department of Biotechnology Engineering, Faculty of Engineering, International Islamic University Malaysia, Kuala Lumpur, Gombak 53100, Malaysia;
| | - Jamarosliza Jamaluddin
- School of Chemical and Energy Engineering, Faculty of Engineering, Universiti Teknologi Malaysia, Johor, Skudai 81310, Malaysia; (S.K.G.); (N.A.); (R.A.M.)
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Li J, Zhu J, Jia L, Ma Y, Wu H. Aqueous-based electrospun P(NIPAAm- co-AAc)/RSF medicated fibrous mats for dual temperature- and pH-responsive drug controlled release. RSC Adv 2019; 10:323-331. [PMID: 35492552 PMCID: PMC9047333 DOI: 10.1039/c9ra08832f] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2019] [Accepted: 12/17/2019] [Indexed: 12/27/2022] Open
Abstract
This paper presents a green method for fabricating dual temperature- and pH-responsive electrospun fibrous mats from an aqueous-based blend poly(N-isopropylacrylamide-co-acrylic acid) (P(NIPAAm-co-AAc)) and regenerated silk fibroin (RSF) by employing electrospinning technique. P(NIPAAm-co-AAc) was synthesized by free radical solution polymerization and its low critical solution temperature (LCST) was in the physiological range (38.8 °C). The P(NIPAAm-co-AAc)/RSF fibers were prepared by electrospinning technology in the presence of the crosslinking agents (EDC·HCl and NHS) with water as solvent. After in situ crosslinking and water-annealing process, the water-stable composite fibrous mats were obtained. Scanning electron microscopy (SEM) and Fourier transform infrared spectroscopy (FTIR) were used to analyze the crosslinking process. Temperature and pH dual stimuli-responsive swelling-shrinking behavior of the fibrous mats were observed when the temperature was below and above the LCST of the copolymer at different pHs. In addition, rhodamine B-loaded the fibrous mats also showed dual temperature and pH controlled release behavior, demonstrating the potential use of the fibrous mats for "smart" controlled drug delivery applications.
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Affiliation(s)
- Juan Li
- College of Materials Science and Engineering, Taiyuan University of Technology Taiyuan 030024 China
| | - Jingxin Zhu
- College of Materials Science and Engineering, Taiyuan University of Technology Taiyuan 030024 China
| | - Lan Jia
- College of Materials Science and Engineering, Taiyuan University of Technology Taiyuan 030024 China
| | - Yanlong Ma
- College of Materials Science and Engineering, Taiyuan University of Technology Taiyuan 030024 China
| | - Haijuan Wu
- College of Materials Science and Engineering, Taiyuan University of Technology Taiyuan 030024 China
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Erdoğan MK, Akdemir Ö, Hamitbeyli A, Karakışla M. Preparation of hydrophilic woven fabrics: Surface modification of poly(ethylene terephthalate) by grafting of poly(vinyl alcohol) and poly(vinyl alcohol)‐
g
‐(
N
‐vinyl‐2‐pyrrolidone). J Appl Polym Sci 2019. [DOI: 10.1002/app.48584] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Meryem Kalkan Erdoğan
- Department of Chemistry, Faculty of ScienceAnkara University 06100 Tandoğan Ankara Turkey
| | - Özgür Akdemir
- SANKO Textile Enterprises Co., ISKO Woven Firm Organized Industrial Zone, 3. Street 16400, Bursa Inegol Turkey
| | - Agamirza Hamitbeyli
- SANKO Textile Enterprises Co., ISKO Woven Firm Organized Industrial Zone, 3. Street 16400, Bursa Inegol Turkey
| | - Meral Karakışla
- Department of Chemistry, Faculty of ScienceAnkara University 06100 Tandoğan Ankara Turkey
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Lorusso E, Ali W, Hildebrandt M, Mayer-Gall T, Gutmann JS. Hydrogel Functionalized Polyester Fabrics by UV-Induced Photopolymerization. Polymers (Basel) 2019; 11:E1329. [PMID: 31405134 PMCID: PMC6723342 DOI: 10.3390/polym11081329] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2019] [Accepted: 08/08/2019] [Indexed: 12/14/2022] Open
Abstract
We address a strategy to graft hydrogels onto polyethylene terephthalate (PET) fabrics using different acrylate-based monomers. The hydrogel-modified fabrics were prepared by a two-step modification. To this end, double functional groups were firstly introduced onto the PET surface via an aminolysis reaction involving allylamine. The final grafted polymer networks were then obtained after UV-induced radical photopolymerization by varying acrylate monomer types in the presence of a cross-linker. After characterization, the resulting hydrogels showed different morphologies and abrasion resistance performances depending on their chemical nature. UV-photopolymerization is a fast and low-cost method to achieve technical fabrics with specific desired properties.
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Affiliation(s)
- Emanuela Lorusso
- Deutsches Textilforschungszentrum Nord-West ÖP GmbH, Adlerstr. 1, 47798 Krefeld, Germany.
- Department of Physical Chemistry and Center of Nanointegration (CENIDE), University of Duisburg-Essen, Universitätsstr. 2, 45141, Essen, Germany.
| | - Wael Ali
- Department of Physical Chemistry and Center of Nanointegration (CENIDE), University of Duisburg-Essen, Universitätsstr. 2, 45141, Essen, Germany.
- Deutsches Textilforschungszentrum Nord-West gGmbH, Adlerstr. 1, 47798 Krefeld, Germany.
| | - Marcus Hildebrandt
- Department of Physical Chemistry and Center of Nanointegration (CENIDE), University of Duisburg-Essen, Universitätsstr. 2, 45141, Essen, Germany
| | - Thomas Mayer-Gall
- Department of Physical Chemistry and Center of Nanointegration (CENIDE), University of Duisburg-Essen, Universitätsstr. 2, 45141, Essen, Germany
- Deutsches Textilforschungszentrum Nord-West gGmbH, Adlerstr. 1, 47798 Krefeld, Germany
| | - Jochen S Gutmann
- Deutsches Textilforschungszentrum Nord-West ÖP GmbH, Adlerstr. 1, 47798 Krefeld, Germany
- Department of Physical Chemistry and Center of Nanointegration (CENIDE), University of Duisburg-Essen, Universitätsstr. 2, 45141, Essen, Germany
- Deutsches Textilforschungszentrum Nord-West gGmbH, Adlerstr. 1, 47798 Krefeld, Germany
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Naemuddin NH, Mizi FM, Suradi SS, Jamaluddin J, Othman MHD, Adrus N. UV LED Curing of Hydrogel-Modified Textiles with High Anti-Fouling Resistance. J PHOTOPOLYM SCI TEC 2019. [DOI: 10.2494/photopolymer.32.699] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Nurul Hazlina Naemuddin
- Department of Bioprocess and Polymer Engineering, School of Chemical and Energy Engineering, Faculty of Engineering, Universiti Teknologi Malaysia
| | - Farahin M Mizi
- Department of Bioprocess and Polymer Engineering, School of Chemical and Energy Engineering, Faculty of Engineering, Universiti Teknologi Malaysia
| | - Siti Samahani Suradi
- Department of Bioprocess and Polymer Engineering, School of Chemical and Energy Engineering, Faculty of Engineering, Universiti Teknologi Malaysia
| | - Jamarosliza Jamaluddin
- Department of Bioprocess and Polymer Engineering, School of Chemical and Energy Engineering, Faculty of Engineering, Universiti Teknologi Malaysia
| | - Mohd Hafiz Dzarfan Othman
- Advanced Membrane Technology Research Centre (AMTEC), School of Chemical and Energy Engineering, Faculty of Engineering, Universiti Teknologi Malaysia
| | - Nadia Adrus
- Department of Bioprocess and Polymer Engineering, School of Chemical and Energy Engineering, Faculty of Engineering, Universiti Teknologi Malaysia
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Cui Y, Xing Z, Yan J, Lu Y, Xiong X, Zheng L. Thermosensitive Behavior and Super-Antibacterial Properties of Cotton Fabrics Modified with a Sercin-NIPAAm-AgNPs Interpenetrating Polymer Network Hydrogel. Polymers (Basel) 2018; 10:E818. [PMID: 30960743 PMCID: PMC6403810 DOI: 10.3390/polym10080818] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2018] [Revised: 07/24/2018] [Accepted: 07/24/2018] [Indexed: 01/06/2023] Open
Abstract
Poly(N-isopropylacrylamide) (PNIPAAm), sericin (SS), and silver nitrate were combined to prepare an interpenetrating network (IPN) hydrogel having dual functions of temperature sensitivity and antibacterial properties. The structure and size of AgNPs in such an IPN hydrogel were characterized by the Fourier Transform Infrared spectrum (FT-IR), X-ray powder diffraction (XRD) and Transmission Electron Microscope (TEM), and the thermal properties of the IPN hydrogel were characterized by Differential Scanning Calorimetry (DSC). Based on XRD patterns, Ag⁺ was successfully reduced to Ag⁰ by SS. It was observed by TEM that the particle size of silver particles was lower than 100 nm. The glass transition temperature (Tg) of IPN hydrogel was better than that of the PNIPAAm/AgNPs hydrogels, and lower critical solution temperature (LCST) values of the IPN hydrogel were obtained by DSC i.e. 31 °C. The thermal stability of the IPN hydrogel was successfully determined by the TGA. This IPN hydrogel was then used to modify the cotton fabrics by the "impregnation" method using glutaraldehyde (GA) as the cross-linking agent. The structures and properties of IPN hydrogel modified cotton fabric were characterized by scanning electron microscopy (SEM), FT-IR, and the thermogravimetry analysis (TGA). The results show that NIPAAm was successfully polymerized into PNIPAAm, and that there were neglected new groups in the hydrogel IPN. The IPN hydrogel was then successfully grafted onto cotton fabrics. SEM observations showed that the IPN hydrogel formed a membrane structure between the fibers, and improved the compactness of the fibers. At the temperature close to LCST (≈31 °C), the entire system was easily able to absorb water molecules. However, the hydrophilicity tended to decrease when the temperature was higher or lower than the LCST. The antibacterial rates of the modified cotton fabric against S. aureus and E. coli were as high as 99%.
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Affiliation(s)
- Yifan Cui
- Department of Textile and Material Engineering, Dalian Polytechnic University, Dalian 116034, China.
| | - Zijing Xing
- Department of Textile and Material Engineering, Dalian Polytechnic University, Dalian 116034, China.
| | - Jun Yan
- Department of Textile and Material Engineering, Dalian Polytechnic University, Dalian 116034, China.
| | - Yanhua Lu
- Key Laboratory of Functional Textile Materials, Eastern Liaoning University, Dandong 118003, China.
| | - Xiaoqing Xiong
- Department of Textile and Material Engineering, Dalian Polytechnic University, Dalian 116034, China.
| | - Laijiu Zheng
- Department of Textile and Material Engineering, Dalian Polytechnic University, Dalian 116034, China.
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