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Mazzaferro L, Lounder SJ, Asatekin A. Amphiphilic Polyampholytes for Fouling-Resistant and Easily Tunable Membranes. ACS APPLIED MATERIALS & INTERFACES 2023; 15:42557-42567. [PMID: 37656014 DOI: 10.1021/acsami.3c07745] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/02/2023]
Abstract
The versatility of membranes is limited by the narrow range of material chemistries on the market, which cannot address many relevant separations. Expanding their use requires new membrane materials that can be tuned to address separations by providing the desired selectivity and robustness. Self-assembly is a versatile and scalable approach to create tunable membranes with a narrow pore size distribution. This study reports the first examples of a new class of membrane materials that derives state-of-the-art permeability, selectivity, and fouling resistance from the self-assembly of random polyampholyte amphiphilic copolymers. These membranes feature a network of ionic nanodomains that serve as nanochannels for water permeation, framed by hydrophobic nanodomains that preserve their structural integrity. This copolymer design approach enables precise selectivity control. For example, sodium sulfate rejections can be tuned from 5% to 93% with no significant change in the pore size or fouling resistance. Membranes developed here have potential applications in wastewater treatment and chemical separations.
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Affiliation(s)
- Luca Mazzaferro
- Department of Chemical and Biological Engineering, Tufts University, 4 Colby Street, Medford, Massachusetts 02155, United States
| | - Samuel J Lounder
- Department of Chemical and Biological Engineering, Tufts University, 4 Colby Street, Medford, Massachusetts 02155, United States
| | - Ayse Asatekin
- Department of Chemical and Biological Engineering, Tufts University, 4 Colby Street, Medford, Massachusetts 02155, United States
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2
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Mushtaq S, Abbas MA, Nasir H, Mahmood A, Iqbal M, Janjua HA, Ahmad NM. Probing the behavior and kinetic studies of amphiphilic acrylate copolymers with bovine serum albumin. Sci Rep 2023; 13:4572. [PMID: 36941313 PMCID: PMC10027669 DOI: 10.1038/s41598-023-27515-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2022] [Accepted: 01/03/2023] [Indexed: 03/23/2023] Open
Abstract
This article presents that acrylate copolymers are the potential candidate against the adsorption of bovine serum albumin (BSA). A series of copolymers poly(methyl methacrylate) (pMMA), poly(3-sulfopropyl methacrylate-co-methyl methacrylate) p(SPMA-co-MMA), and poly(dimethylaminoethyl methacrylate-co-methyl methacrylate) p(DMAEMA-co-MMA) were synthesized via free radical polymerization. These amphiphilic copolymers are thermally stable with a glass transition temperature (Tg) 50-120 °C and observed the impact of surface charge on amphiphilic copolymers to control interactions with the bovine serum albumin (BSA). These copolymers pMD1 and pMS1 have surface charges, - 56.6 and - 72.6 mV at pH 7.4 in PBS buffer solution that controls the adsorption capacity of bovine serum albumin (BSA) on polymers surface. Atomic force microscopy (AFM) analysis showed minimum roughness of 0.324 nm and 0.474 nm for pMS1 and pMD1. Kinetic studies for BSA adsorption on these amphiphilic copolymers showed the best fitting of the pseudo-first-order model that showed physisorption and attained at 25 °C and pH 7.4 within 24 h.
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Affiliation(s)
- Shehla Mushtaq
- Department of Chemistry, School of Natural Sciences (SNS), National University of Sciences and Technology, H-12, Islamabad, 44000, Pakistan
- Chemical Engineering & Material Science, Michigan State University, East Lansing, MI, 48824, USA
| | - Muhammad Asad Abbas
- Polymers Research Lab, Polymers and Composites Research Group, School of Chemical and Materials Engineering (SCME), National University of Sciences and Technology, H-12, Islamabad, 44000, Pakistan
| | - Habib Nasir
- Department of Chemistry, School of Natural Sciences (SNS), National University of Sciences and Technology, H-12, Islamabad, 44000, Pakistan
| | - Azhar Mahmood
- Department of Chemistry, School of Natural Sciences (SNS), National University of Sciences and Technology, H-12, Islamabad, 44000, Pakistan
| | - Mudassir Iqbal
- Department of Chemistry, School of Natural Sciences (SNS), National University of Sciences and Technology, H-12, Islamabad, 44000, Pakistan
| | - Hussnain A Janjua
- Department of Industrial Biotechnology, Atta-Ur-Rahman School of Applied Biosciences (ASAB), National University of Sciences and Technology, H-12, Islamabad, 44000, Pakistan
| | - Nasir M Ahmad
- Polymers Research Lab, Polymers and Composites Research Group, School of Chemical and Materials Engineering (SCME), National University of Sciences and Technology, H-12, Islamabad, 44000, Pakistan.
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Zhang C, Lu Z, Wu B, Jiang SD, Qian J. Grafting of Maleic Anhydride onto Poly(vinylidene fluoride) Using Reactive Extrusion. Molecules 2023; 28:molecules28052246. [PMID: 36903492 PMCID: PMC10005521 DOI: 10.3390/molecules28052246] [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: 01/29/2023] [Revised: 02/21/2023] [Accepted: 02/24/2023] [Indexed: 03/04/2023] Open
Abstract
Poly(vinylidene fluoride) was grafted with maleic anhydride through reactive extrusion by using diisopropyl benzene peroxide as an initiator and 9-vinyl anthracene as a stabilizer. Effects of various parameters on grafting degree were investigated including the amounts of monomer, initiator and stabilizer. The maximum extent of grafting achieved was 0.74%. The graft polymers were characterized using FTIR, water contact angle, thermal, mechanical and XRD studies. Improved hydrophilic and mechanical properties were observed for graft polymers.
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4
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PVC/PMMA blend ultrafiltration membranes for oil-in-water emulsion separation. Polym Bull (Berl) 2022. [DOI: 10.1007/s00289-022-04514-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Sadeghi I, Lu X, Sarmadi M, Langer R, Jaklenec A. Micromolding of Thermoplastic Polymers for Direct Fabrication of Discrete, Multilayered Microparticles. SMALL METHODS 2022; 6:e2200232. [PMID: 35764872 DOI: 10.1002/smtd.202200232] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/13/2022] [Indexed: 06/15/2023]
Abstract
Soft lithography provides a convenient and effective method for the fabrication of microdevices with uniform size and shape. However, formation of an embossed, connective film as opposed to discrete features has been an enduring shortcoming associated with soft lithography. Removing this residual layer requires additional postprocessing steps that are often incompatible with organic materials. This limits adaptation and widespread realization of soft lithography for broader applications particularly in drug discovery and drug delivery fields. A novel and versatile approach is demonstrated that enables fabrication of discrete, multilayered, fillable, and harvestable microparticles directly from any thermoplastic polymer, even at very high molecular weights. The approach, isolated microparticle replication via surface-segregating polymer blend mold, utilizes a random copolymer additive, designed with a highly fluorinated segment that, when blended with the mold's matrix, spontaneously orients to the surface conferring an extremely low surface energy and nonwetting properties to the template. The extremely nonwetting properties of the mold are further utilized to load soluble biologics directly into the built-in microwells in a rapid and efficient manner using an innovative screen-printing approach. It is believed that this approach holds promise for fabrication of large-array, 3D, complex microstructures, and is a significant step toward clinical translation of microfabrication technologies.
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Affiliation(s)
- Ilin Sadeghi
- David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA, 02139, USA
| | - Xueguang Lu
- Beijing National Laboratory for Molecular Science, Key Laboratory of Colloid, Interface and Chemical Thermodynamics, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China
| | - Morteza Sarmadi
- David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA, 02139, USA
- Department of Mechanical Engineering, Massachusetts Institute of Technology, Cambridge, MA, 02139, USA
| | - Robert Langer
- David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA, 02139, USA
| | - Ana Jaklenec
- David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA, 02139, USA
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Govinna ND, Sadeghi I, Schick C, Asatekin A, Cebe P. Crystallization kinetics, polymorphism fine tuning, and rigid amorphous fraction of poly(vinylidene fluoride) blends. POLYMER CRYSTALLIZATION 2021. [DOI: 10.1002/pcr2.10205] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Nelaka Dilshan Govinna
- Department of Physics and Astronomy, Center for Nanoscopic Physics Tufts University Medford Massachusetts USA
| | - Ilin Sadeghi
- Department of Chemical and Biological Engineering Science and Technology Center Medford Massachusetts USA
| | - Christoph Schick
- University of Rostock Institute of Physics and Competence Center CALOR° Rostock Germany
- Kazan Federal University Institute of Chemistry Kazan Russian Federation
| | - Ayse Asatekin
- Department of Chemical and Biological Engineering Science and Technology Center Medford Massachusetts USA
| | - Peggy Cebe
- Department of Physics and Astronomy, Center for Nanoscopic Physics Tufts University Medford Massachusetts USA
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Liu Y, Xu P, Ge W, Lu C, Li Y, Niu S, Zhang J, Feng S. Synchronous oil/water separation and wastewater treatment on a copper-oxide-coated mesh. RSC Adv 2021; 11:17740-17745. [PMID: 35480222 PMCID: PMC9033239 DOI: 10.1039/d1ra02334a] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2021] [Accepted: 05/01/2021] [Indexed: 12/22/2022] Open
Abstract
Despite remarkable progress in oil/water separation and wastewater treatment, the ability to carry out the two processes in a synchronous manner has remained difficult. Here, synchronous oil/water separation and wastewater treatment were proposed on mesh surfaces coated with copper-oxide particles, which possess superwetting and catalytic properties. The superwetting performance generates additional pressure to achieve the permselectivity of the designed mesh, on which the oil phase is selectively repelled while the water phase passes though easily. Moreover, the catalytic performance of the copper oxide forms reactive oxygen species to purify the water during oil/water separation process. We show that the oil/water separation and catalytic degradation efficiencies for organic pollutants can reach more than 99% by adjusting the content of copper oxide on the mesh surfaces. Such a unique design for integrating multifunctionality on single mesh surfaces strongly underpins the synchronization of oil/water separation and wastewater treatment, which will provide a new insight for separating pure water from industrial oil/water mixtures. An integrated multifunctional copper-oxide-coated mesh was designed via facile immersing and burning methods, which manifests synchronous oil/water separation and wastewater treatment.![]()
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Affiliation(s)
- Yahua Liu
- Key Laboratory for Precision & Non-traditional Machining Technology of Ministry of Education, Dalian University of Technology Dalian 116024 China
| | - Peng Xu
- Key Laboratory for Precision & Non-traditional Machining Technology of Ministry of Education, Dalian University of Technology Dalian 116024 China
| | - Wenna Ge
- Key Laboratory for Precision & Non-traditional Machining Technology of Ministry of Education, Dalian University of Technology Dalian 116024 China
| | - Chenguang Lu
- Key Laboratory for Precision & Non-traditional Machining Technology of Ministry of Education, Dalian University of Technology Dalian 116024 China
| | - Yunlai Li
- Key Laboratory for Precision & Non-traditional Machining Technology of Ministry of Education, Dalian University of Technology Dalian 116024 China
| | - Shichao Niu
- Key Laboratory of Bionic Engineering, Ministry of Education, Jilin University Changchun 130022 China
| | - Junqiu Zhang
- Key Laboratory of Bionic Engineering, Ministry of Education, Jilin University Changchun 130022 China
| | - Shile Feng
- Key Laboratory for Precision & Non-traditional Machining Technology of Ministry of Education, Dalian University of Technology Dalian 116024 China
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Ekbote GS, Khalifa M, Mahendran A, Anandhan S. Cationic surfactant assisted enhancement of dielectric and piezoelectric properties of PVDF nanofibers for energy harvesting application. SOFT MATTER 2021; 17:2215-2222. [PMID: 33464271 DOI: 10.1039/d0sm01943g] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Poly(vinylidene fluoride) (PVDF) is among the most versatile polymers due to its wide range of properties, including dielectric, piezoelectric and ferroelectric properties. However, more frequently than not a range of processing routes and/or additives have been used to enhance such properties. In this study, PVDF nanofibers were electrospun from PVDF solution that contained tetra-n-butyl ammonium chloride (TBAC) at different loadings (1, 2, 3, and 5 wt%). The effect of TBAC on the morphology, crystallinity, and polymorphism of PVDF was studied using various characterization techniques. Addition of TBAC significantly improved the electroactive β-phase of PVDF. The highest β-phase content of 89% was attained at a TBAC loading of 3 wt%. Consequently, the dielectric and piezoelectric properties of the PVDF nanofibers improved significantly. A nanogenerator fabricated using 3 wt% TBAC/PVDF nanofibers exhibited the maximum voltage output of 17.2 V (under 5 N force) and the maximum power density of ∼1.4 μW cm-2 (under 3 N force). Improved dielectric and piezoelectric properties of PVDF upon the addition of a small amount of TBAC could be useful for researchers in upbringing the material for flexible electronic devices.
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Affiliation(s)
- Govind S Ekbote
- Department of Metallurgical and Materials Engineering, National Institute of Technology Karnataka, Srinivas Nagar, Mangaluru 575025, India.
| | - Mohammed Khalifa
- Kompetenzzentrum Holz GmbH, W3C, A-9300 St. Veit/Glan, Klagenfurter Strasse 87-89, Linz, Austria
| | - Arunjunairaj Mahendran
- Kompetenzzentrum Holz GmbH, W3C, A-9300 St. Veit/Glan, Klagenfurter Strasse 87-89, Linz, Austria
| | - S Anandhan
- Department of Metallurgical and Materials Engineering, National Institute of Technology Karnataka, Srinivas Nagar, Mangaluru 575025, India.
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Engineered drug delivery devices to address Global Health challenges. J Control Release 2021; 331:503-514. [PMID: 33516755 PMCID: PMC7842133 DOI: 10.1016/j.jconrel.2021.01.035] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2020] [Revised: 01/21/2021] [Accepted: 01/22/2021] [Indexed: 12/11/2022]
Abstract
There is a dire need for innovative solutions to address global health needs. Polymeric systems have been shown to provide substantial benefit to all sectors of healthcare, especially for their ability to extend and control drug delivery. Herein, we review polymeric drug delivery devices for vaccines, tuberculosis, and contraception.
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Clark AG, Salcedo Montero M, Govinna ND, Lounder SJ, Asatekin A, Cebe P. Relaxation dynamics of blends of
PVDF
and zwitterionic copolymer by dielectric relaxation spectroscopy. JOURNAL OF POLYMER SCIENCE 2020. [DOI: 10.1002/pol.20200032] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Andrew G. Clark
- Department of Physics and AstronomyTufts University Medford Massachusetts USA
| | - Miriam Salcedo Montero
- Department of Physics and AstronomyTufts University Medford Massachusetts USA
- Facultad de CienciasUniversidad de Autónoma de Madrid Madrid Spain
| | - Nelaka D. Govinna
- Department of Physics and AstronomyTufts University Medford Massachusetts USA
| | - Samuel J. Lounder
- Department of Chemical and Biological EngineeringTufts University Medford Massachusetts USA
| | - Ayse Asatekin
- Department of Chemical and Biological EngineeringTufts University Medford Massachusetts USA
| | - Peggy Cebe
- Department of Physics and AstronomyTufts University Medford Massachusetts USA
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Sun Y, Huang J, Guo Z. A superamphiphobic surface with a hydrogen peroxide-triggered switch to antithetic fluid repellence in a liquid-liquid-air three-phase fluid system. Chem Commun (Camb) 2020; 56:4312-4315. [PMID: 32186554 DOI: 10.1039/d0cc01047b] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
Herein, a superamphiphobic surface with a hydrogen peroxide-triggered switch to antithetic fluid repellence is presented. Novel arbitrary superamphiphobicity in one phase to repel the other two phases from an oil-water-air system or a generalized liquid-liquid-air three-phase fluid system can be realized.
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Affiliation(s)
- Yihan Sun
- State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, People's Republic of China.
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12
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Dielectric and calorimetric signatures of chain orientation in strong and tough ultrafine electrospun polyacrylonitrile. POLYMER 2019. [DOI: 10.1016/j.polymer.2019.121638] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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