Article
Energy & Fuels
Issa Ndiaye, Imane Chaoui, Jaouad Eddouibi, Sebastien Vaudreuil, Tijani Bounahmidi
Summary: This paper focuses on the application of blending poly (vinylidene fluoride) (PVDF) with hydrophilic polyacrylonitrile (PAN) in forward osmosis (FO) process. The obtained thin film composite membranes (TFC) showed high water fluxes, superior salt fluxes and excellent mechanical performance.
CHEMICAL ENGINEERING AND PROCESSING-PROCESS INTENSIFICATION
(2022)
Article
Thermodynamics
Lijuan Yan, Baozhong Zhu, Jiuyu Chen, Yunlan Sun
Summary: By using polyvinylidene fluoride (PVDF) as a modified material, boron nanoparticles (n-B) were modified by electrospinning and solvent anti-solvent methods, which effectively coated B particles and decreased the agglomeration size. The reaction heat and combustion intensity of B particles were increased, and the combustion performance of B/PVDF composites prepared by the electrospinning method was better than that prepared by the solvent anti-solvent method.
COMBUSTION AND FLAME
(2023)
Article
Engineering, Chemical
Jorge Contreras-Martinez, Carmen Garcia-Payo, Paula Arribas, Laura Rodriguez-Saez, Amaia Lejarazu-Larranaga, Eloy Garcia-Calvo, Mohamed Khayet
Summary: End-of-life reverse osmosis membranes can be repurposed for forward osmosis applications as recycled FO and transformed recycled FO membranes, with the latter showing superior performance in terms of water permeate fluxes. The transformation process involves interfacial polymerization to further enhance FO membrane performance. This study demonstrates the feasibility of utilizing discarded RO membranes for wastewater treatment in FO technology, contributing to circular economy and sustainability in membrane science.
Article
Engineering, Chemical
Xuhui Hu, Xing Chen, Mattia Giagnorio, Chunhong Wu, Yunbai Luo, Claus Helix-Nielsen, Ping Yu, Wenjing Zhang
Summary: A new class of PVDF-based membranes suitable for membrane distillation was prepared via electrospinning. By tuning the solvent ratio and operating parameters, the classical fiber morphology of PVDF electrospun membranes was changed to generate a beaded structure. Increasing the bead density improved the water contact angle and reduced the membrane thickness, but decreased the membrane mechanical stability. Simultaneous deployment of 17 and 25 wt% of PVDF solutions in a double-needle electrospinning device enabled the fabrication of electrospun PVDF-beaded membranes with high hydrophobicity, low thickness, and good mechanical stability for membrane distillation.
JOURNAL OF MEMBRANE SCIENCE
(2022)
Article
Engineering, Chemical
Xuan Zhang, Hui-Min Cui, Yu Gao, Zhi-Wei Yan, Xi Yan, Yan Chen, Xiao-Jing Guo, Wan- Zhong Lang
Summary: This study improves the permeability and selectivity of thin-film composite (TFC) membrane by incorporating hexadecyltrimethylammonium toluene-p-sulphonate (CTAT) into the amine aqueous solution. The mechanism for the improved performance of the TFC-CTAT membrane is investigated and it is found that the membrane has exceptional water flux and low reverse salt flux.
Article
Polymer Science
Micah Belle Marie Yap Ang, Yun-Ting Lu, Shu-Hsien Huang, Jeremiah C. Millare, Hui-An Tsai, Kueir-Rarn Lee
Summary: Surfactants can modify the property and performance of polyamide layer during interfacial polymerization of amines and trimesoyl chloride. Different types of surfactants have different effects on the membrane, such as changing the surface charge and hydrophilicity, and affecting the water and salt transport. It is important to choose a suitable surfactant to regulate the membrane performance.
JOURNAL OF POLYMER RESEARCH
(2022)
Article
Engineering, Chemical
Xiaoxia Sun, Bin Wang, Peilei Zhou, Hongyuan Yu, Zhengwei Cai, Jia Xu
Summary: In this study, a novel substrate-floating interfacial polymerization (SFIP) method was proposed to fabricate a defect-free polyamide skin layer on a macro-porous substrate. The addition of inorganic salt such as NaCl during SFIP process enhanced the diffusion of MPD molecules, resulting in an excellent ethanol flux/reverse LiCl flux value for the fabricated FO membrane. Additionally, the hydrophilicity/hydrophobicity of the substrate was found to control the forming position of the polyamide skin layer via SFIP method. This work provides a feasible strategy for fabricating high-quality desalted membranes and demonstrates their potential in organic solvent recovery.
JOURNAL OF MEMBRANE SCIENCE
(2023)
Article
Nanoscience & Nanotechnology
Shuangzhe Zhang, Bowen Zhang, Jinxi Zhang, Kailiang Ren
Summary: The study found that electrospinning and near-field ES methods can significantly improve the piezoelectricity of PVDF, with PVDF-NFES-PLA showing the best performance, suitable for the preparation of self-powered devices and various sensors.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Chemistry, Physical
Yuanyuan Li, Qing Hu, Rui Zhang, Wenmei Ma, Siwei Pan, Yaohong Zhao, Qing Wang, Pengfei Fang
Summary: This study fabricated fiber membranes of a PVDF/CA composite using the electrospinning technique and demonstrated its superior piezoelectric behavior compared to pure PVDF fibers. The flexible nanogenerator made from these membranes generated voltage and current under mechanical stress, providing energy for low-power electronic devices.
Article
Biochemistry & Molecular Biology
Petr Slobodian, Robert Olejnik, Jiri Matyas, Berenika Hausnerova, Pavel Riha, Romana Danova, Dusan Kimmer
Summary: In this study, electroactive PVDF membranes were prepared and their responses to mechanical and electro-mechanical signals were detected. The results showed unique properties and potential applications of PVDF membranes, particularly in terms of their response to electro-mechanical loads.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2022)
Article
Polymer Science
Enrique Folgado, Qiao Song, Sebastien Perrier, Vincent Ladmiral, Mona Semsarilar
Summary: This study presents the synthesis of cyclic peptide-poly(vinylidene fluoride) (CP-PVDF) conjugates using (d-alt-l)-cyclopeptides as building blocks and their self-assembly into tube-like structures. The conjugates were prepared with high purity through a grafting-from strategy and controlled self-assembly was achieved by addition of THF, resulting in the formation of long tube-like structures. The unprecedented formation of long tubular peptide-polymer aggregates is believed to be due to synergetic effects between the stacking of cyclic peptides and interactions of the fluoropolymer-peptide conjugates.
Article
Chemistry, Physical
Mina Rasoolzadeh, Zahra Sherafat, Mehran Vahedi, Elham Bagherzadeh
Summary: The present research investigates the effect of SiC additive and process parameters on the beta phase formation in electrospun PVDF fibers. It is found that the presence of SiC nanoparticles enhances the piezoelectric behavior of PVDF/SiC nanocomposites, and the optimum sample shows improved piezoelectric sensitivity.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Engineering, Chemical
Jiao Meng, Yan Xie, Yi-Hang Gu, Xi Yan, Yan Chen, Xiao-Jing Guo, Wan-Zhong Lang
Summary: The PVDF-CaAlg NF membranes are prepared by crosslinking sodium alginate solution, exhibiting a compact structure and superior surface hydrophilicity. They show high rejection rates for various dyes, with rejection rates slightly increasing with prolonged impregnation time, and stable permeation flux in long-term filtration. Additionally, these membranes demonstrate good anti-fouling performance to BSA protein and lactobacillus.
SEPARATION AND PURIFICATION TECHNOLOGY
(2021)
Article
Materials Science, Composites
N. Arul, M. Suresh, M. Satthiyaraju, N. B. Karthik Babu
Summary: In this study, the properties of electrospun PVDF/WO3 nanorods composite nanofibers were investigated for piezoelectric energy harvesting applications. The addition of WO3 nanorods significantly enhanced the piezoelectric performance of PVDF. The composite nanofibers also exhibited improved thermal stability and mechanical properties.
POLYMER COMPOSITES
(2023)
Article
Polymer Science
Stanley Chinedu Mamah, Pei Sean Goh, Ahmad Fauzi Ismail, Lukka Thuyavan Yogarathinam, Nur Diyana Suzaimi, Anthony Chukwunonso Opia, Samuel Ojo, Ngouangna Eugene Ngwana
Summary: The substrate of forward osmosis (FO) thin-film composite (TFC) membranes plays a crucial role in the formation of the selective layer. Improving the substrate's thickness, tortuosity, and porosity can further enhance the properties of TFC membranes. In this study, a TFC membrane with a polyamide selective layer and a palygorskite-chitin (PAL-CH) embedded polysulfone substrate was developed for FO desalination. The inclusion of PAL-CH resulted in improved water flux and reduced structural parameter, leading to a 110% increase in water recovery compared to pristine membranes.
JOURNAL OF APPLIED POLYMER SCIENCE
(2022)
Article
Engineering, Chemical
Hyeon-gyu Choi, Aatif Ali Shah, Seung-Eun Nam, You-In Park, Hosik Park
Article
Chemistry, Multidisciplinary
Aatif Ali Shah, Young Hoon Cho, Hyeon-gyu Choi, Seung-Eun Nam, Jeong F. Kim, Youngmi Kim, You-In Park, Hosik Park
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
(2019)
Article
Engineering, Chemical
Aatif Ali Shah, Ahrumi Park, Youngmin Yoo, Seung-Eun Nam, You-In Park, Young Hoon Cho, Hosik Park
Summary: This study focused on the fabrication of biomonomer-based TFC NF membranes through interfacial polymerization, which exhibited high water permeability and excellent selectivity towards divalent ions.
JOURNAL OF MEMBRANE SCIENCE
(2021)
Article
Engineering, Chemical
Sang Deuk Kim, Ga Yeon Won, Aatif Ali Shah, Ahrumi Park, You-In Park, Seung-Eun Nam, Young Hoon Cho, Hosik Park
Summary: The highly robust and tight OSN membranes were developed by reinforcing the active layer with an ultrathin polydopamine (pDA) coating and simultaneous co-crosslinking. The membranes showed improved rejection properties and stability in various organic solvents, even in polar aprotic solvents, with high rejection rates for low molecular weight solutes.
JOURNAL OF MEMBRANE SCIENCE
(2021)
Article
Biochemistry & Molecular Biology
Aatif Ali Shah, Youngmin Yoo, Ahrumi Park, Young Hoon Cho, You-In Park, Hosik Park
Summary: In this study, hydrophilic poly(ethylene-co-polyvinyl alcohol) (EVOH) nanofiber membranes were fabricated using an electrospinning technique for highly efficient oil/water separation. The as-prepared nanofiber membranes exhibited super-hydrophilic property and were capable of continuously separating water-in-oil emulsions with high efficiency. Furthermore, these membranes showed high stability and can be reused in real field oil/water separation applications.
Article
Chemistry, Physical
Aatif Ali Shah, Jinyu Yang, Tanay Kumar, Cagri Ayranci, Xuehua Zhang
Summary: Transparent and flexible electrospun nanofiber membranes have attracted attention for their potential use in electronic displays, solar cells, air filtration, and medical applications. This study presents a successful fabrication technique for transparent composite nanofibrous membranes using electrospinning and a specific post-treatment. The resulting membranes exhibit excellent performance, including high optical transparency, hydrophobicity, mechanical strength, water vapor transmission rate, and thermal stability. They have potential applications in windshields, displays, and transparent wound dressings.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2023)
Review
Materials Science, Biomaterials
Muzammil Kuddushi, Aatif Ali Shah, Cagri Ayranci, Xuehua Zhang
Summary: Optically transparent wound dressings have various applications in biomedical fields, allowing for monitoring of wound healing without dressing replacement. This review provides an overview of wound dressings, novel materials, fabrication techniques, and key features and applications of transparent dressings. It focuses on transparent polymeric materials like electrospun nanofibers, hydrogels, and composite films/membranes.
JOURNAL OF MATERIALS CHEMISTRY B
(2023)
Article
Materials Science, Multidisciplinary
Aatif Ali Shah, Hyeon Jun Heo, Sanggil Park, Eunsung Yi, YoungHoon Cho, Seung-Eun Nam, You-In Park, Hyungjun Kim, Eun-Ho Sohn, Hosik Park, Jeong F. Kim
ACS APPLIED POLYMER MATERIALS
(2020)
Article
Engineering, Chemical
Aatif Ali Shah, Hyeon-gyu Choi, Seung-Eun Nam, Ahrumi Park, Pyung Soo Lee, You-In Park, Hosik Park
DESALINATION AND WATER TREATMENT
(2017)
