1
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Potential Applications of Thermoresponsive Poly( N-Isoproplacrylamide)-Grafted Nylon Membranes: Effect of Grafting Yield and Architecture on Gating Performance. Polymers (Basel) 2023; 15:polym15030497. [PMID: 36771798 PMCID: PMC9920928 DOI: 10.3390/polym15030497] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2022] [Revised: 01/11/2023] [Accepted: 01/12/2023] [Indexed: 01/20/2023] Open
Abstract
This study illustrated the potential applications of thermoresponsive poly(N-isopropylacrylamide) (PNIPAm) grafted nylon membranes with different grafting yields and grafting architecture. The thermoresponsive gating performance at temperatures below and above the lower critical solution temperature (LCST) of PNIPAm (32 °C) were demonstrated. The linear PNIPAm-grafted nylon membrane exhibited a sharp response over the temperature range 20-40 °C. The grafting yield of 25.5% and 21.9%, for linear and crosslinked PNIPAm respectively, exhibited highest thermoresponsive gating function for water flux and had a stable and repeatable "open-closed" switching function over 5 cycle operations. An excellent oil/water separation was obtained at T < 32 °C, at which the hydrophilic behavior was observed. The linear PNIPAm-grafted nylon membrane with 35% grafting yield had the highest separation efficiency of 99.7%, while PNIPAm structures were found to be independent of the separation efficiency. In addition, the membranes with thermoresponsive gas permeability were successfully achieved. The O2 and CO2 transmission rates through the PNIPAm-grafted nylon membranes decreased when the grafting yield increased, showing the better gas barrier property. The permeability ratio of CO2 to O2 transmission rates of both PNIPAm architectures at 25 °C and 35 °C were around 0.85 for low grafting yields, and approximately 1 for high grafting yields. Ultimately, this study demonstrated the possibility of using these thermoresponsive smart membranes in various applications.
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2
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Hou H, Huang B, Yu X, Lan J, Chen F. Sulfonate betaine modified
PVDF
/
SiO
2
composite electrolyte for solid state lithium ion battery. J Appl Polym Sci 2022. [DOI: 10.1002/app.53573] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Hongying Hou
- Faculty of Material Science and Engineering Kunming University of Science and Technology Kunming China
| | - Baoxiang Huang
- Faculty of Material Science and Engineering Kunming University of Science and Technology Kunming China
| | - Xiaohua Yu
- Faculty of Material Science and Engineering Kunming University of Science and Technology Kunming China
| | - Jian Lan
- Faculty of Material Science and Engineering Kunming University of Science and Technology Kunming China
| | - Fangshu Chen
- Law School Kunming University of Science and Technology Kunming China
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3
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Hongyan T, Xuebin W, Jincheng W, Guosheng W. Preparation and properties of potassium alginate soil conditioner microspheres coated with poly(N-isopropyl acrylamide) microgel membrane. Colloids Surf A Physicochem Eng Asp 2022. [DOI: 10.1016/j.colsurfa.2022.130709] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/03/2022]
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4
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Nayak K, Kumar A, Tripathi BP. Molecular grafting and zwitterionization based antifouling and underwater superoleophobic PVDF membranes for oil/water separation. J Memb Sci 2022. [DOI: 10.1016/j.memsci.2021.120038] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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5
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Sivaperuman Kalairaj M, Banerjee H, Senthil Kumar K, Lopez KG, Ren H. Thermo-Responsive Hydrogel-Based Soft Valves with Annular Actuation Calibration and Circumferential Gripping. Bioengineering (Basel) 2021; 8:127. [PMID: 34562949 PMCID: PMC8468597 DOI: 10.3390/bioengineering8090127] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2021] [Revised: 08/31/2021] [Accepted: 09/11/2021] [Indexed: 11/24/2022] Open
Abstract
Valves are largely useful for treatment assistance devices, e.g., supporting fluid circulation movement in the human body. However, the valves presently used in biomedical applications still use materials that are rigid, non-compliant, and hard to integrate with human tissues. Here, we propose biologically-inspired, stimuli-responsive valves and evaluate N-Isopropylacrylamide hydrogels-based valve (NPHV) and PAAm-alginate hydrogels-based valve (PAHV) performances with different chemical syntheses for optimizing better valve action. Once heated at 40 ∘C, the NPHV outperforms the PAHV in annular actuation (NPHV: 1.93 mm displacement in 4 min; PAHV: 0.8 mm displacement in 30 min). In contrast, the PAHV exhibits a flow rate change of up to 20%, and a payload of 100% when the object is at 100 ∘C. The PAHV demonstrated a completely soft, stretchable circular gripper with a high load-to-weight ratio for diversified applications. These valves are fabricated with a simple one-pot method that, once further optimized, can offer transdisciplinary applications.
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Affiliation(s)
- Manivannan Sivaperuman Kalairaj
- Department of Biomedical Engineering, National University of Singapore, Singapore 117575, Singapore; (M.S.K.); (H.B.); (K.S.K.); (K.G.L.)
| | - Hritwick Banerjee
- Department of Biomedical Engineering, National University of Singapore, Singapore 117575, Singapore; (M.S.K.); (H.B.); (K.S.K.); (K.G.L.)
| | - Kirthika Senthil Kumar
- Department of Biomedical Engineering, National University of Singapore, Singapore 117575, Singapore; (M.S.K.); (H.B.); (K.S.K.); (K.G.L.)
| | - Keith Gerard Lopez
- Department of Biomedical Engineering, National University of Singapore, Singapore 117575, Singapore; (M.S.K.); (H.B.); (K.S.K.); (K.G.L.)
| | - Hongliang Ren
- Department of Biomedical Engineering, National University of Singapore, Singapore 117575, Singapore; (M.S.K.); (H.B.); (K.S.K.); (K.G.L.)
- Department of Electronic Engineering, The Chinese University of Hong Kong, Central Ave., Hong Kong, China
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6
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Algarni F, Musteata VE, Falca G, Chisca S, Hadjichristidis N, Nunes SP. Thermo-Responsive Membranes from Blends of PVDF and PNIPAM- b-PVDF Block Copolymers with Linear and Star Architectures. Macromolecules 2021. [DOI: 10.1021/acs.macromol.1c01372] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Fatimah Algarni
- Physical Science and Engineering Division, Catalysis Center, King Abdullah University of Science and Technology (KAUST), 23955-6900 Thuwal, Saudi Arabia
| | - Valentina Elena Musteata
- Biological and Environmental Science and Engineering Division, Advanced Membranes and Porous Materials Center, King Abdullah University of Science and Technology (KAUST), 23955-6900 Thuwal, Saudi Arabia
| | - Gheorghe Falca
- Biological and Environmental Science and Engineering Division, Advanced Membranes and Porous Materials Center, King Abdullah University of Science and Technology (KAUST), 23955-6900 Thuwal, Saudi Arabia
| | - Stefan Chisca
- Biological and Environmental Science and Engineering Division, Advanced Membranes and Porous Materials Center, King Abdullah University of Science and Technology (KAUST), 23955-6900 Thuwal, Saudi Arabia
| | - Nikos Hadjichristidis
- Physical Science and Engineering Division, Catalysis Center, King Abdullah University of Science and Technology (KAUST), 23955-6900 Thuwal, Saudi Arabia
| | - Suzana P. Nunes
- Biological and Environmental Science and Engineering Division, Advanced Membranes and Porous Materials Center, King Abdullah University of Science and Technology (KAUST), 23955-6900 Thuwal, Saudi Arabia
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7
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Sengupta A, Vu A, Qian X, Wickramasinghe SR. Remote Performance Modulation of Ultrafiltration Membranes by Magnetically and Thermally Responsive Polymer Chains. MEMBRANES 2021; 11:membranes11050340. [PMID: 34064385 PMCID: PMC8147820 DOI: 10.3390/membranes11050340] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/24/2021] [Revised: 04/26/2021] [Accepted: 04/28/2021] [Indexed: 11/16/2022]
Abstract
Ultrafiltration membranes, that respond to an external magnetic field and local temperature have been developed. Surface-initiated activator-generated electron transfer (AGET) atom transfer radical polymerization (ATRP) has been used to graft poly(N-isopropylacrylamide) (PNIPAm) from the surface of 300 kDa regenerated cellulose membranes. The polymerization initiator was selectively attached to the entire membrane surface, only the outer membrane surface or only the inner pore surface. A superparamagnetic nanoparticle was attached to the end of the polymer chain. The DI water flux as well as the flux and rejection of bovine serum albumin were investigated in the absence and presence of a 20 and 1000 Hz oscillating magnetic field. In an oscillating magnetic field, the tethered superparamagnetic nanoparticles can cause movement of the PNIPAm chains or induce heating. A 20 Hz magnetic field maximizes movement of the chains. A 1000 Hz magnetic field leads to greater induced heating. PNIPAm displays a lower critical solution temperature at 32 °C. Heating leads to collapse of the PNIPAm chains above their Lower Critical Solution Temperature (LCST). This work highlights the versatility of selectively grafting polymer chains containing a superparamagnetic nanoparticle from specific membrane locations. Depending on the frequency of the oscillating external magnetic field, membrane properties may be tuned.
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Affiliation(s)
- Arijit Sengupta
- Ralph E Martin Department of Chemical Engineering, University of Arkansas, Fayettteville, AR 72701, USA; (A.S.); (A.V.)
- Bhabha Atomic Research Centre, Radiochemistry Division, Mumbai 400085, India
| | - Anh Vu
- Ralph E Martin Department of Chemical Engineering, University of Arkansas, Fayettteville, AR 72701, USA; (A.S.); (A.V.)
| | - Xianghong Qian
- Department of Biomedical Engineering, University of Arkansas, Fayettteville, AR 72701, USA;
| | - S. Ranil Wickramasinghe
- Ralph E Martin Department of Chemical Engineering, University of Arkansas, Fayettteville, AR 72701, USA; (A.S.); (A.V.)
- Correspondence: ; Tel.: +1-479-575-8475
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8
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Daumann K, Frost S, Ulbricht M. Tunable and switchable nanoparticle separation with thermo-responsive track-etched membranes prepared by controlled surface-initiated polymerization of poly( N-isopropylacrylamide). RSC Adv 2020; 10:21028-21038. [PMID: 35518763 PMCID: PMC9054401 DOI: 10.1039/d0ra03418e] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2020] [Accepted: 05/26/2020] [Indexed: 11/21/2022] Open
Abstract
This work describes how the control of grafting density and grafted chain length of a thermo-responsive polymer in membrane pores can be utilized to tune the pore size and the switchability of size-based selectivity in the ultrafiltration range. Using a previously established methodology for controlled synthesis, surface-initiated atom transfer polymerization (ATRP) of poly(N-isopropylacrylamide) (PNIPAAm) to the pore walls of poly(ethylene terephthalate) track-etched membranes with experimentally determined pore diameters of 35 nm (PET30) and 110 nm (PET80) is performed. Characterization in this study is mainly done with filtration experiments, making use of the well-defined pore structure of the base membranes. It is demonstrated that both the gravimetrically determined degree of functionalization and the effective pore size determined from water permeability are a linear function of ATRP time. For the grafted PET30 membranes, it is shown that the rejection of lysozyme (diameter ∼ 4 nm) can be switched between 99% at 23 °C and 65% at 45 °C for the membrane with the highest degree of functionalization. For the grafted PET80 membranes, it is found that two different types of membranes can be obtained. Membranes with long grafted chains at low grafting density show very large changes of water permeability as a function of temperature (effective pore size switching ratio of up to 10) and, for example, rejection for 20 nm silica particles of 95% and 23% at 23 °C and 45 °C, respectively. Membranes with PNIPAAm at high grafting density show much lower switching ratios (as low as 1.4, for long enough grafted chains). Effective pore size and thermo-responsive change of pore size can therefore be tuned by the combination of both synthesis parameters, initiator density and ATRP time. The switchable thermo-responsive separation of two colloids with a tailored membrane is demonstrated for mixtures of bovine serum albumin (BSA; ∼7 nm) and silica nanoparticles (20 nm); at 23 °C silica is completely rejected and only BSA is in the permeate; at 40 °C both colloids permeate through the membrane. This work describes how the control of grafting density and grafted chain length of a thermo-responsive polymer in membrane pores can be utilized to tune the pore size and the switchability of size-based selectivity in the ultrafiltration range.![]()
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Affiliation(s)
- Kevin Daumann
- Lehrstuhl für Technische Chemie II, Universität Duisburg-Essen Universitätsstr. 7 45141 Essen Germany .,Center for Nanointegration Duisburg-Essen (CENIDE) 47057 Duisburg Germany
| | - Sven Frost
- Lehrstuhl für Technische Chemie II, Universität Duisburg-Essen Universitätsstr. 7 45141 Essen Germany .,Center for Nanointegration Duisburg-Essen (CENIDE) 47057 Duisburg Germany
| | - Mathias Ulbricht
- Lehrstuhl für Technische Chemie II, Universität Duisburg-Essen Universitätsstr. 7 45141 Essen Germany .,Center for Nanointegration Duisburg-Essen (CENIDE) 47057 Duisburg Germany
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9
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Thermo-responsive separation membrane with smart anti-fouling and self-cleaning properties. Chem Eng Res Des 2020. [DOI: 10.1016/j.cherd.2020.02.006] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
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10
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Xu Y, Ajji A, Heuzey MC. Response behaviors and mechanical strength of thermal responsive hydrogels fabricated by electrospinning. POLYMER 2019. [DOI: 10.1016/j.polymer.2019.121880] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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11
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Vanangamudi A, Dumée LF, Ligneris ED, Duke M, Yang X. Thermo-responsive nanofibrous composite membranes for efficient self-cleaning of protein foulants. J Memb Sci 2019. [DOI: 10.1016/j.memsci.2018.12.086] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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12
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Ziegler L, Simon F, Boldt R, Reuter U, Janke A, Zimmerer C. Novel Concept to Endow Poly(Methyl Methacrylate) Surfaces with Reactive Surface Groups. ChemistrySelect 2018. [DOI: 10.1002/slct.201802937] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Lisa Ziegler
- Leibniz Institute of Polymer Research Dresdene.V.; P. O. Box 120 411 D-01005 Dresden Germany
| | - Frank Simon
- Leibniz Institute of Polymer Research Dresdene.V.; P. O. Box 120 411 D-01005 Dresden Germany
| | - Regine Boldt
- Leibniz Institute of Polymer Research Dresdene.V.; P. O. Box 120 411 D-01005 Dresden Germany
| | - Uta Reuter
- Leibniz Institute of Polymer Research Dresdene.V.; P. O. Box 120 411 D-01005 Dresden Germany
| | - Andreas Janke
- Leibniz Institute of Polymer Research Dresdene.V.; P. O. Box 120 411 D-01005 Dresden Germany
| | - Cordelia Zimmerer
- Leibniz Institute of Polymer Research Dresdene.V.; P. O. Box 120 411 D-01005 Dresden Germany
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13
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Vanangamudi A, Dumée LF, Duke MC, Yang X. Dual Functional Ultrafiltration Membranes with Enzymatic Digestion and Thermo-Responsivity for Protein Self-Cleaning. MEMBRANES 2018; 8:E85. [PMID: 30235868 PMCID: PMC6161312 DOI: 10.3390/membranes8030085] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/24/2018] [Revised: 09/11/2018] [Accepted: 09/17/2018] [Indexed: 06/08/2023]
Abstract
Controlling surface⁻protein interaction during wastewater treatment is the key motivation for developing functionally modified membranes. A new biocatalytic thermo-responsive poly vinylidene fluoride (PVDF)/nylon-6,6/poly(N-isopropylacrylamide)(PNIPAAm) ultrafiltration membrane was fabricated to achieve dual functionality of protein-digestion and thermo-responsive self-cleaning. The PVDF/nylon-6,6/PNIPAAm composite membranes were constructed by integrating a hydrophobic PVDF cast layer and hydrophilic nylon-6,6/PNIPAAm nanofiber layer on to which trypsin was covalently immobilized. The enzyme immobilization density on the membrane surface decreased with increasing PNIPAAm concentration, due to the decreased number of amine functional sites. An ultrafiltration study was performed using the synthetic model solution containing BSA/NaCl/CaCl2, where the PNIPAAm containing biocatalytic membranes demonstrated a combined effect of enzymatic and thermo-switchable self-cleaning. The membrane without PNIPAAm revealed superior fouling resistance and self-cleaning with an RPD of 22%, compared to membranes with 2 and 4 wt % PNIPAAm with 26% and 33% RPD, respectively, after an intermediate temperature cleaning at 50 °C, indicating that higher enzyme density offers more efficient self-cleaning than the combined effect of enzyme and PNIPAAm at low concentration. The conformational volume phase transition of PNIPAAm did not affect the stability of immobilized trypsin on membrane surfaces. Such novel surface engineering design offer a promising route to mitigate surface⁻protein contamination in wastewater applications.
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Affiliation(s)
- Anbharasi Vanangamudi
- Institute for Sustainable Industries and Liveable Cities, College of Engineering and Science, Victoria University, P.O. Box 14428, Melbourne, VIC 8001, Australia.
- Institute for Frontier Materials, Deakin University, Waurn Ponds, Geelong, VIC 3216, Australia.
| | - Ludovic F Dumée
- Institute for Frontier Materials, Deakin University, Waurn Ponds, Geelong, VIC 3216, Australia.
| | - Mikel C Duke
- Institute for Sustainable Industries and Liveable Cities, College of Engineering and Science, Victoria University, P.O. Box 14428, Melbourne, VIC 8001, Australia.
| | - Xing Yang
- Institute for Sustainable Industries and Liveable Cities, College of Engineering and Science, Victoria University, P.O. Box 14428, Melbourne, VIC 8001, Australia.
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14
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Sun J, Li J, Liu D, Ma Y, Yang S. pH-Responsive Janus Film Constructed with Hydrogen-Bonding Assembly and Dopamine Chemistry. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2018; 34:6653-6659. [PMID: 29715430 DOI: 10.1021/acs.langmuir.7b04339] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Poly(acrylic acid) (PAA) was partially grafted with dopamine (PAA-dopa), and then layer-by-layer assembled with poly(vinylpyrrolidone) (PVPON) to prepare hydrogen-bonded (PVPON/PAA-dopa) n film. Polydopamine (PDA) was deposited on (PVPON/PAA-dopa) n film in the presence of oxidant, and hence the whole (PVPON/PAA-dopa) nPDA film was cross-linked. (PVPON/PAA-dopa) nPDA could be utilized as a platform to produce the free-standing Janus film because of the easy detaching process and various chemical reactivity of PDA layer. Ag nanoparticles were formed on (PVPON/PAA-dopa) nPDA film by electroless metallization. 1 H,1 H,2 H,2 H-Perfluorodecanethiol (PFDT) was used to further modify the film through Michael addition. After detaching from the substrate, (PVPON/PAA-dopa)20PDA/Ag/PFDT exhibits reversible swelling-shrinking behavior as the pH value changes. This free-standing film shows Janus character, one side is hydrophobic, whereas the other side is hydrophilic. In addition, the hydrophobic surface exhibits a surface-enhanced Raman scattering effect, whereas the hydrophilic side does not.
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15
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Tripathi BP, Das P, Simon F, Stamm M. Ultralow fouling membranes by surface modification with functional polydopamine. Eur Polym J 2018. [DOI: 10.1016/j.eurpolymj.2017.12.006] [Citation(s) in RCA: 40] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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16
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Zhang S, Bisterfeld C, Bramski J, Vanparijs N, De Geest BG, Pietruszka J, Böker A, Reinicke S. Biocatalytically Active Thin Films via Self-Assembly of 2-Deoxy-d-ribose-5-phosphate Aldolase-Poly(N-isopropylacrylamide) Conjugates. Bioconjug Chem 2017; 29:104-116. [PMID: 29182313 DOI: 10.1021/acs.bioconjchem.7b00645] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
2-Deoxy-d-ribose-5-phosphate aldolase (DERA) is a biocatalyst that is capable of converting acetaldehyde and a second aldehyde as acceptor into enantiomerically pure mono- and diyhydroxyaldehydes, which are important structural motifs in a number of pharmaceutically active compounds. However, substrate as well as product inhibition requires a more-sophisticated process design for the synthesis of these motifs. One way to do so is to the couple aldehyde conversion with transport processes, which, in turn, would require an immobilization of the enzyme within a thin film that can be deposited on a membrane support. Consequently, we developed a fabrication process for such films that is based on the formation of DERA-poly(N-isopropylacrylamide) conjugates that are subsequently allowed to self-assemble at an air-water interface to yield the respective film. In this contribution, we discuss the conjugation conditions, investigate the interfacial properties of the conjugates, and, finally, demonstrate a successful film formation under the preservation of enzymatic activity.
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Affiliation(s)
- Shuhao Zhang
- Department of Functional Protein Systems and Biotechnology, Fraunhofer Institute for Applied Polymer Research (IAP) , Geiselbergstraße 69, 14476 Potsdam-Golm, Germany.,Polymer Materials and Polymer Technologies, University of Potsdam , 14476, Potsdam-Golm, Germany
| | - Carolin Bisterfeld
- Institute of Bioorganic Chemistry, Heinrich Heine University of Düsseldorf at Forschungszentrum Jülich , Stetternicher Forst, 52426 Jülich, Germany
| | - Julia Bramski
- Institute of Bioorganic Chemistry, Heinrich Heine University of Düsseldorf at Forschungszentrum Jülich , Stetternicher Forst, 52426 Jülich, Germany
| | - Nane Vanparijs
- Department of Pharmaceutics, Ghent University , Ottergemsesteenweg 460, 9000 Ghent, Belgium
| | - Bruno G De Geest
- Department of Pharmaceutics, Ghent University , Ottergemsesteenweg 460, 9000 Ghent, Belgium
| | - Jörg Pietruszka
- Institute of Bioorganic Chemistry, Heinrich Heine University of Düsseldorf at Forschungszentrum Jülich , Stetternicher Forst, 52426 Jülich, Germany.,IBG-1: Biotechnology, Forschungszentrum Jülich GmbH , 52425 Jülich, Germany
| | - Alexander Böker
- Department of Functional Protein Systems and Biotechnology, Fraunhofer Institute for Applied Polymer Research (IAP) , Geiselbergstraße 69, 14476 Potsdam-Golm, Germany.,Polymer Materials and Polymer Technologies, University of Potsdam , 14476, Potsdam-Golm, Germany
| | - Stefan Reinicke
- Department of Functional Protein Systems and Biotechnology, Fraunhofer Institute for Applied Polymer Research (IAP) , Geiselbergstraße 69, 14476 Potsdam-Golm, Germany
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17
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Xu W, Qin Z, Chen CT, Kwag HR, Ma Q, Sarkar A, Buehler MJ, Gracias DH. Ultrathin thermoresponsive self-folding 3D graphene. SCIENCE ADVANCES 2017; 3:e1701084. [PMID: 28989963 PMCID: PMC5630237 DOI: 10.1126/sciadv.1701084] [Citation(s) in RCA: 80] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/06/2017] [Accepted: 09/12/2017] [Indexed: 05/21/2023]
Abstract
Graphene and other two-dimensional materials have unique physical and chemical properties of broad relevance. It has been suggested that the transformation of these atomically planar materials to three-dimensional (3D) geometries by bending, wrinkling, or folding could significantly alter their properties and lead to novel structures and devices with compact form factors, but strategies to enable this shape change remain limited. We report a benign thermally responsive method to fold and unfold monolayer graphene into predesigned, ordered 3D structures. The methodology involves the surface functionalization of monolayer graphene using ultrathin noncovalently bonded mussel-inspired polydopamine and thermoresponsive poly(N-isopropylacrylamide) brushes. The functionalized graphene is micropatterned and self-folds into ordered 3D structures with reversible deformation under a full control by temperature. The structures are characterized using spectroscopy and microscopy, and self-folding is rationalized using a multiscale molecular dynamics model. Our work demonstrates the potential to design and fabricate ordered 3D graphene structures with predictable shape and dynamics. We highlight applicability by encapsulating live cells and creating nonlinear resistor and creased transistor devices.
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Affiliation(s)
- Weinan Xu
- Department of Chemical and Biomolecular Engineering, Johns Hopkins University, Baltimore, MD 21218, USA
| | - Zhao Qin
- Department of Civil and Environmental Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | - Chun-Teh Chen
- Department of Civil and Environmental Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | - Hye Rin Kwag
- Department of Chemical and Biomolecular Engineering, Johns Hopkins University, Baltimore, MD 21218, USA
| | - Qinli Ma
- Department of Physics and Astronomy, Johns Hopkins University, Baltimore, MD 21218, USA
| | - Anjishnu Sarkar
- Department of Chemical and Biomolecular Engineering, Johns Hopkins University, Baltimore, MD 21218, USA
| | - Markus J. Buehler
- Department of Civil and Environmental Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | - David H. Gracias
- Department of Chemical and Biomolecular Engineering, Johns Hopkins University, Baltimore, MD 21218, USA
- Department of Materials Science and Engineering, Johns Hopkins University, Baltimore, MD 21218, USA
- Corresponding author.
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18
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Shen Y, Wang Y, Zhao X, Sun C, Cui B, Gao F, Zeng Z, Cui H. Preparation and Physicochemical Characteristics of Thermo-Responsive Emamectin BenzoateMicrocapsules. Polymers (Basel) 2017; 9:E418. [PMID: 30965720 PMCID: PMC6418524 DOI: 10.3390/polym9090418] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2017] [Revised: 08/23/2017] [Accepted: 08/31/2017] [Indexed: 11/30/2022] Open
Abstract
Thermo-responsive release emamectin benzoate microcapsules were successfully prepared with a polydopamine (PDA)-g-poly(N-isopropylacrylamide) (PNIPAm) multifunctional layer. Preparation of emamectin benzoate microcapsules was first studied by emulsion interfacial-polymerization using PDA as a wall material. Then the amino-terminated PNIPAm was grafted on the PDA layer by its amino group in aqueous solution. Physicochemical characterization of microcapsules was obtained by scanning electron microscopy (SEM), transmission electron microscopy (TEM), Fourier transform infrared spectroscopy (FTIR), X-ray photoelectron spectroscopy (XPS), and dynamic light scattering (DLS). Kinetic study of emamectin benzoate release showed that the microcapsules exhibit sustained- and controlled-release properties. The multifunctional layer can release emamectin benzoate easily when the temperature was below the lower critical solution temperature (LCST). In contrast, when the temperature increased above the LCST, the release rate was reduced. The results indicated that these microcapsules with excellent thermo-sensitivity would be promising in the research field of pesticide microcapsules.
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Affiliation(s)
- Yue Shen
- Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Beijing 100081, China.
| | - Yan Wang
- Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Beijing 100081, China.
| | - Xiang Zhao
- Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Beijing 100081, China.
| | - Changjiao Sun
- Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Beijing 100081, China.
| | - Bo Cui
- Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Beijing 100081, China.
| | - Fei Gao
- Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Beijing 100081, China.
| | - Zhanghua Zeng
- Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Beijing 100081, China.
| | - Haixin Cui
- Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Beijing 100081, China.
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19
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Chou HT, Chen YC, Lee CY, Chang HY, Tai NH. Biomimetic structure of carbon fiber cloth grafted with poly(N-isopropylacrylamide) for water collection and smart gates. RSC Adv 2017. [DOI: 10.1039/c7ra05869a] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
An eco-friendly, facile, and efficient method was developed to modify carbon fiber cloth (CFC) having superhydrophobic or hydrophilic properties.
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Affiliation(s)
- Hung-Tao Chou
- Department of Materials Science and Engineering
- National Tsing Hua University
- Taiwan
| | - Ying-Chieh Chen
- Department of Materials Science and Engineering
- National Tsing Hua University
- Taiwan
| | - Chi-Young Lee
- Department of Materials Science and Engineering
- National Tsing Hua University
- Taiwan
| | - Hwan-You Chang
- Institute of Molecular Medicine
- National Tsing Hua University
- Hsinchu
- 300 Taiwan
| | - Nyan-Hwa Tai
- Department of Materials Science and Engineering
- National Tsing Hua University
- Taiwan
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20
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Haq MA, Su Y, Wang D. Mechanical properties of PNIPAM based hydrogels: A review. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2016; 70:842-855. [PMID: 27770962 DOI: 10.1016/j.msec.2016.09.081] [Citation(s) in RCA: 275] [Impact Index Per Article: 34.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/08/2016] [Revised: 09/13/2016] [Accepted: 09/29/2016] [Indexed: 11/26/2022]
Abstract
Materials which adjust their properties in response to environmental factors such as temperature, pH and ionic strength are rapidly evolving and known as smart materials. Hydrogels formed by smart polymers have various applications. Among the smart polymers, thermoresponsive polymer poly(N-isopropylacrylamide)(PNIPAM) is very important because of its well defined structure and property specially its temperature response is closed to human body and can be finetuned as well. Mechanical properties are critical for the performance of stimuli responsive hydrogels in diverse applications. However, native PNIPAM hydrogels are very fragile and hardly useful for any practical purpose. Intense researches have been done in recent decade to enhance the mechanical features of PNIPAM hydrogel. In this review, several strategies including interpenetrating polymer network (IPN), double network (DN), nanocomposite (NC) and slide ring (SR) hydrogels are discussed in the context of PNIPAM hydrogel.
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Affiliation(s)
- Muhammad Abdul Haq
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Engineering Plastics, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, PR China; Laboratory of Food Engineering, Department of Food Science & Technology, University of Karachi, Karachi, Pakistan
| | - Yunlan Su
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Engineering Plastics, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, PR China.
| | - Dujin Wang
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Engineering Plastics, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, PR China
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21
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Wang T, Qiblawey H, Sivaniah E, Mohammadian A. Novel methodology for facile fabrication of nanofiltration membranes based on nucleophilic nature of polydopamine. J Memb Sci 2016. [DOI: 10.1016/j.memsci.2016.03.043] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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22
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Dubey NC, Tripathi BP, Müller M, Stamm M, Ionov L. Bienzymatic Sequential Reaction on Microgel Particles and Their Cofactor Dependent Applications. Biomacromolecules 2016; 17:1610-20. [PMID: 27010819 DOI: 10.1021/acs.biomac.5b01745] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
We report, the preparation and characterization of bioconjugates, wherein enzymes pyruvate kinase (Pk) and l-lactic dehydrogenase (Ldh) were covalently bound to poly(N-isopropylacrylamide)-poly(ethylenimine) (PNIPAm-PEI) microgel support using glutaraldehyde (GA) as the cross-linker. The effects of different arrangements of enzymes on the microgels were investigated for the enzymatic behavior and to obtain maximum Pk-Ldh sequential reaction. The dual enzyme bioconjugates prepared by simultaneous addition of both the enzymes immobilized on the same microgel particles (PL), and PiLi, that is, dual enzyme bioconjugate obtained by combining single-enzyme bioconjugates (immobilized pyruvate kinase (Pi) and immobilized lactate dehydrogenase (Li)), were used to study the effect of the assembly of dual enzymes systems on the microgels. The kinetic parameters (Km, kcat), reaction parameters (temperature, pH), stability (thermal and storage), and cofactor dependent applications were studied for the dual enzymes conjugates. The kinetic results indicated an improved turn over number (kcat) for PL, while the kcat and catalytic efficiency was significantly decreased in case of PiLi. For cofactor dependent application, in which the ability of ADP monitoring and ATP synthesis by the conjugates were studied, the activity of PL was found to be nearly 2-fold better than that of PiLi. These results indicated that the influence of spacing between the enzymes is an important factor in optimization of multienzyme immobilization on the support.
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Affiliation(s)
- Nidhi C Dubey
- Department of Chemistry, Technische Universität Dresden , 01069 Dresden, Germany
| | | | - Martin Müller
- Department of Chemistry, Technische Universität Dresden , 01069 Dresden, Germany
| | - Manfred Stamm
- Department of Chemistry, Technische Universität Dresden , 01069 Dresden, Germany
| | - Leonid Ionov
- College of Engineering, College of Family & Consumer Science, University of Georgia , Athens, Georgia 30602, United States
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23
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Fang M, Zhang H, Chen J, Wang T, Liu J, Li X, Li J, Cao X. A facile approach to construct hierarchical dense membranes via polydopamine for enhanced propylene/nitrogen separation. J Memb Sci 2016. [DOI: 10.1016/j.memsci.2015.10.046] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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24
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Wang Y, Lin H, Xiong Z, Wu Z, Yu X, Wang Y, Liu F. Investigation of abnormal thermoresponsive PVDF membranes on casting solution, membrane morphology and filtration performance. RSC Adv 2016. [DOI: 10.1039/c5ra28060e] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A temperature sensitive casting solution of P(OEGMA-co-VTMOS) was prepared via an in situ polymerization method. Meanwhile, an interesting thermoresponsive PVDF membrane was obtained from the temperature sensitive casting solution.
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Affiliation(s)
- Yunze Wang
- Ningbo Institute of Materials Technology & Engineering
- Chinese Academy of Sciences
- Ningbo
- P. R. China
- Nano Science and Technology Institute
| | - Haibo Lin
- Ningbo Institute of Materials Technology & Engineering
- Chinese Academy of Sciences
- Ningbo
- P. R. China
| | - Zhu Xiong
- Ningbo Institute of Materials Technology & Engineering
- Chinese Academy of Sciences
- Ningbo
- P. R. China
| | - Ziyang Wu
- Ningbo Institute of Materials Technology & Engineering
- Chinese Academy of Sciences
- Ningbo
- P. R. China
| | - Xuemin Yu
- Ningbo Institute of Materials Technology & Engineering
- Chinese Academy of Sciences
- Ningbo
- P. R. China
| | - Yi Wang
- Ningbo Institute of Materials Technology & Engineering
- Chinese Academy of Sciences
- Ningbo
- P. R. China
| | - Fu Liu
- Ningbo Institute of Materials Technology & Engineering
- Chinese Academy of Sciences
- Ningbo
- P. R. China
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25
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Tripathi BP, Dubey NC, Subair R, Choudhury S, Stamm M. Enhanced hydrophilic and antifouling polyacrylonitrile membrane with polydopamine modified silica nanoparticles. RSC Adv 2016. [DOI: 10.1039/c5ra22160a] [Citation(s) in RCA: 71] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023] Open
Abstract
Hydrophilic and antifouling polydopamine modified silica nanoparticles-polyacrylonitrile membranes were fabricated for water purification applications. High dispersion and better compatibility of modified nanoparticles with polyacrylonitrile was observed.
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Affiliation(s)
- Bijay P. Tripathi
- Department of Nanostructured Materials
- Leibniz Institute of Polymer Research Dresden
- D-01069 Dresden
- Germany
| | - Nidhi C. Dubey
- Department of Nanostructured Materials
- Leibniz Institute of Polymer Research Dresden
- D-01069 Dresden
- Germany
- Technische Universität Dresden
| | - Riyas Subair
- Department of Nanostructured Materials
- Leibniz Institute of Polymer Research Dresden
- D-01069 Dresden
- Germany
| | - Soumydip Choudhury
- Department of Nanostructured Materials
- Leibniz Institute of Polymer Research Dresden
- D-01069 Dresden
- Germany
| | - Manfred Stamm
- Department of Nanostructured Materials
- Leibniz Institute of Polymer Research Dresden
- D-01069 Dresden
- Germany
- Technische Universität Dresden
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26
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Wu CJ, Xie R, Wei HB, Xu TT, Liu Z, Wang W, Ju XJ, Chu LY. Fabrication of a thermo-responsive membrane with cross-linked smart gates via a ‘grafting-to’ method. RSC Adv 2016. [DOI: 10.1039/c6ra05192h] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A novel thermo-responsive membrane with the cross-linked microspheres as smart gates is fabricated by the “grafting to” technique, which exhibits excellent thermo-responsive characteristics with satisfactory reversibility and stability.
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Affiliation(s)
- Cheng-Jing Wu
- School of Chemical Engineering
- Sichuan University
- Chengdu
- China
| | - Rui Xie
- School of Chemical Engineering
- Sichuan University
- Chengdu
- China
| | - Hong-Bo Wei
- School of Chemical Engineering
- Sichuan University
- Chengdu
- China
| | - Ting-Ting Xu
- School of Chemical Engineering
- Sichuan University
- Chengdu
- China
| | - Zhuang Liu
- School of Chemical Engineering
- Sichuan University
- Chengdu
- China
| | - Wei Wang
- School of Chemical Engineering
- Sichuan University
- Chengdu
- China
| | - Xiao-Jie Ju
- School of Chemical Engineering
- Sichuan University
- Chengdu
- China
- State Key Laboratory of Polymer Materials Engineering
| | - Liang-Yin Chu
- School of Chemical Engineering
- Sichuan University
- Chengdu
- China
- State Key Laboratory of Polymer Materials Engineering
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27
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Thomas M, Gajda M, Amiri Naini C, Franzka S, Ulbricht M, Hartmann N. Poly(N,N-dimethylaminoethyl methacrylate) Brushes: pH-Dependent Switching Kinetics of a Surface-Grafted Thermoresponsive Polyelectrolyte. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2015; 31:13426-13432. [PMID: 26569145 DOI: 10.1021/acs.langmuir.5b03448] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
The temperature-dependent switching behavior of poly(N,N-dimethylaminoethyl methacrylate) brushes in alkaline, neutral, and acidic solutions is examined. A novel microscopic laser temperature-jump technique is employed in order to study characteristic thermodynamic and kinetic parameters. Static laser micromanipulation experiments allow one to determine the temperature-dependent variation of the swelling ratio. The data reveal a strong shift of the volume phase transition of the polymer brushes to higher temperatures when going from pH = 10 to pH = 4. Dynamic laser micromanipulation experiments offer a temporal resolution on a submillisecond time scale and provide a means to determine the intrinsic rate constants. Both the swelling and the deswelling rates strongly decrease in acidic solutions. Complementary experiments using in situ atomic force microscopy show an increased polymer layer thickness at these conditions. The data are discussed on the basis of pH-dependent structural changes of the polymer brushes including protonation of the amine groups and conformational rearrangements. Generally, repulsive electrostatic interactions and steric effects are assumed to hamper and slow down temperature-induced switching in acidic solutions. This imposes significant restrictions for smart polymer surfaces, sensors, and devices requiring fast response times.
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Affiliation(s)
- Marc Thomas
- Physical Chemistry, Department of Chemistry, and ‡Technical Chemistry II, Department of Chemistry, University of Duisburg-Essen , 45117, Essen, Germany
- Center for Nanointegration Duisburg-Essen (CENIDE) and ∥Interdisciplinary Center for Analytics on the Nanoscale (ICAN), University of Duisburg-Essen , 47057 Duisburg, Germany
| | - Martyna Gajda
- Physical Chemistry, Department of Chemistry, and ‡Technical Chemistry II, Department of Chemistry, University of Duisburg-Essen , 45117, Essen, Germany
- Center for Nanointegration Duisburg-Essen (CENIDE) and ∥Interdisciplinary Center for Analytics on the Nanoscale (ICAN), University of Duisburg-Essen , 47057 Duisburg, Germany
| | - Crispin Amiri Naini
- Physical Chemistry, Department of Chemistry, and ‡Technical Chemistry II, Department of Chemistry, University of Duisburg-Essen , 45117, Essen, Germany
- Center for Nanointegration Duisburg-Essen (CENIDE) and ∥Interdisciplinary Center for Analytics on the Nanoscale (ICAN), University of Duisburg-Essen , 47057 Duisburg, Germany
| | - Steffen Franzka
- Physical Chemistry, Department of Chemistry, and ‡Technical Chemistry II, Department of Chemistry, University of Duisburg-Essen , 45117, Essen, Germany
- Center for Nanointegration Duisburg-Essen (CENIDE) and ∥Interdisciplinary Center for Analytics on the Nanoscale (ICAN), University of Duisburg-Essen , 47057 Duisburg, Germany
| | - Mathias Ulbricht
- Physical Chemistry, Department of Chemistry, and ‡Technical Chemistry II, Department of Chemistry, University of Duisburg-Essen , 45117, Essen, Germany
- Center for Nanointegration Duisburg-Essen (CENIDE) and ∥Interdisciplinary Center for Analytics on the Nanoscale (ICAN), University of Duisburg-Essen , 47057 Duisburg, Germany
| | - Nils Hartmann
- Physical Chemistry, Department of Chemistry, and ‡Technical Chemistry II, Department of Chemistry, University of Duisburg-Essen , 45117, Essen, Germany
- Center for Nanointegration Duisburg-Essen (CENIDE) and ∥Interdisciplinary Center for Analytics on the Nanoscale (ICAN), University of Duisburg-Essen , 47057 Duisburg, Germany
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28
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Hu L, Gao S, Ding X, Wang D, Jiang J, Jin J, Jiang L. Photothermal-Responsive Single-Walled Carbon Nanotube-Based Ultrathin Membranes for On/Off Switchable Separation of Oil-in-Water Nanoemulsions. ACS NANO 2015; 9:4835-4842. [PMID: 25905455 DOI: 10.1021/nn5062854] [Citation(s) in RCA: 127] [Impact Index Per Article: 14.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Oil-contaminated wastewater threatens our environment and health, especially that stabilized by surfactants. Conventional separation protocols become invalid for those surfactant-stabilized nanoemulsions due to their nanometer-sized droplets and extremely high stability. In this paper, photothermal-responsive ultrathin Au nanorods/poly(N-isopropylacrylamide-co-acrylamide) cohybrid single-walled carbon nanotube (SWCNT) nanoporous membranes are constructed. Such membranes are capable of separating oil-in-water nanoemulsions with a maximum flux up to 35 890 m(2)·h(-1)·bar(-1) because they feature hydrophilicity, underwater oleophobicity, and nanometer pore sizes. It is remarkable that the permeation flux can be simply modulated by light illumination during the process of separation, due to the incorporation of thermal-responsive copolymers and Au nanorods. Meanwhile, it shows ultrahigh separation efficiency (>99.99%) and desired antifouling and recyclability properties. We anticipate that our ultrathin photothermal-responsive SWCNT-based membranes provide potential for the generation of point-of-use water treatment devices.
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Affiliation(s)
| | | | | | | | | | | | - Lei Jiang
- §Beijing National Laboratory for Molecular Sciences (BNLMS), Key Laboratory of Organic Solids, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, People's Republic of China
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29
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Sun H, Ai M, Zhu S, Jia X, Cai Q, Yang X. Polylactide–hydroxyapatite nanocomposites with highly improved interfacial adhesion via mussel-inspired polydopamine surface modification. RSC Adv 2015. [DOI: 10.1039/c5ra21010k] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The interfacial bonding between inorganic hydroxyapatite and organic polylactide could be significantly improved by introducing polydopamine surface coating on hydroxyapatite.
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Affiliation(s)
- Hongyang Sun
- State Key Laboratory of Organic-Inorganic Composites
- Beijing University of Chemical Technology
- Beijing 100029
- P. R. China
| | - Miao Ai
- State Key Laboratory of Organic-Inorganic Composites
- Beijing University of Chemical Technology
- Beijing 100029
- P. R. China
| | - Siqi Zhu
- State Key Laboratory of Organic-Inorganic Composites
- Beijing University of Chemical Technology
- Beijing 100029
- P. R. China
| | - Xiaolong Jia
- State Key Laboratory of Organic-Inorganic Composites
- Beijing University of Chemical Technology
- Beijing 100029
- P. R. China
| | - Qing Cai
- State Key Laboratory of Organic-Inorganic Composites
- Beijing University of Chemical Technology
- Beijing 100029
- P. R. China
- Beijing Laboratory of Biomedical Materials
| | - Xiaoping Yang
- State Key Laboratory of Organic-Inorganic Composites
- Beijing University of Chemical Technology
- Beijing 100029
- P. R. China
- Beijing Laboratory of Biomedical Materials
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