Article
Materials Science, Textiles
Baobao Zhao, Quan Yang, Zhen Wang, Chenggong Hu, Quan Feng, Anfang Wei
Summary: The study investigated the effects of pump flux on the structure and performance of BR PVDF hollow fiber membranes, showing good sound absorption properties. The sound absorption performance of woven fabrics were further tested, with plain fabric exhibiting smaller thickness and better acoustical properties.
TEXTILE RESEARCH JOURNAL
(2022)
Article
Engineering, Chemical
Murong Yang, Haihui Liu, Kaikai Chen, Mianning Wang, Huanhuan Chen, Wei Zhao, Changfa Xiao
Summary: Membrane separation technology is widely used in various fields, especially in water treatment. A study focuses on the preparation of PVDF hollow fiber composite membranes through a green preparation method. The addition of PEO promotes phase separation and improves membrane performance. The prepared membrane shows high water flux, excellent protein rejection, and strong mechanical properties.
JOURNAL OF THE TAIWAN INSTITUTE OF CHEMICAL ENGINEERS
(2023)
Review
Engineering, Chemical
Rozita M. Moattari, Toraj Mohammadi, Saied Rajabzadeh, Hadi Dabiryan, Hideto Matsuyama
Summary: This review paper discusses the fabrication, advantages, and reinforcement methods of HFMs, and compares the effectiveness of different reinforcement methods based on tensile strength and elongation data. The paper also briefly looks into commercialized products and global projects in the field of reinforced HFMs.
JOURNAL OF THE TAIWAN INSTITUTE OF CHEMICAL ENGINEERS
(2021)
Article
Environmental Sciences
Dawei Ji, Changfa Xiao, Jian Zhao, Kaikai Chen, Fang Zhou, Yifei Gao, Tai Zhang, Haoyang Ling
Summary: In this study, PVDF loose nanofiltration hollow fiber membranes with a multilayer structure were successfully prepared via a solvent-free process. The membranes were modified with GO and PPy, which improved their hydrophilicity and dye rejection capability while maintaining a low salt rejection rate. The novel preparation strategy showed great potential for accurate dye/salt separation.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Biochemistry & Molecular Biology
Jihyeon Kim, Jinwon Lee, Lindsey B. Bezek, Bumjin Park, Kwan-Soo Lee
Summary: PVDF dual-layer hollow fiber membranes were prepared using TIPS and NIPS methods for water treatment application. The addition of nucleating agent NA11 improved the mechanical strength of the membrane by up to 42%. The thickness of the coating layer affected the porosity and mechanical performance of the membrane, resulting in high durability under harsh processing conditions.
Article
Environmental Sciences
Ismail Koyuncu, Bahriye Eryildiz, Recep Kaya, Yucel Karakus, Fatemeh Zakeri, Alireza Khataee, Vahid Vatanpour
Summary: This study examined the performance of braid reinforced hollow fiber membrane containing PVDF embedded with WO3 nanosheets in treating textile wastewater in an MBR. The addition of 0.1 wt% of the nanosheets improved membrane hydrophilicity, porosity, and COD and color removal efficiency.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2023)
Article
Environmental Sciences
Gizem Tuncay, Turker Turken, Ismail Koyuncu
Summary: In this study, braid reinforced membranes were fabricated using two different molecular weights of PVDF polymers. The blending of the polymers improved the membrane performance, resulting in a hydrophilic structure with a smoother surface. The investigation showed that the blend membrane had less adsorption of pollutants and reduced fouling.
ENVIRONMENTAL TECHNOLOGY
(2022)
Article
Engineering, Chemical
Zhelun Li, Kang Hu, Xianshe Feng
Summary: We developed a thin-film-composite hollow fiber membrane with a hydrophilic active layer and a hydrophobic substrate for concentrating KAc solutions. To overcome the problem of liquid water crossover, a hydrophobic substrate was chosen. The deposition of hydrophilic macromolecules on a hydrophobic surface was achieved by using methanol as a co-solvent and pre-coating dopamine as a hydrophilic binding layer. The resulting membrane showed stable performance in concentrating KAc solutions, with a stable water flux and high salt retention.
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
Article
Environmental Sciences
Jia Xin Yap, C. P. Leo, Derek Juinn Chieh Chan, Nazlina Haiza Mohd Yasin, Pau Loke Show
Summary: This study investigates the improvement of air-liquid interface cultivation of Navicula incerta using rearranged polyethersulfone (PES) and poly (vinylidene fluoride) (PVDF) hollow fiber membranes. The results show that PVDF hollow fiber membranes have a greater improvement in N. incerta cell growth rate compared to PES hollow fiber membranes. Furthermore, PVDF membranes significantly promote the growth of microalgae N. incerta through the air-liquid interface system, leading to potential applications in wastewater treatment.
Article
Chemistry, Multidisciplinary
Mengqiu Yang, Yuanpeng Liu, Botao Yuan, Zhaoxu Guang, Jipeng Liu, Liwei Dong, Yuanpeng Ji, Qun Li, Yifang Liang, Yunfa Dong, Sue Hao, Chunhui Yang, Weidong He
Summary: In this study, a composite separator incorporating ethyl cyanoacrylate (ECA) into a polyvinylidene fluoride (PVDF) polymer matrix was proposed to achieve high mechanical strength, thermal stability, and electrolyte uptake capability. The ECA-PVDF separator demonstrated enhanced performance in lithium-ion batteries, delivering high discharge capacity and excellent cycling stability.
MATERIALS CHEMISTRY FRONTIERS
(2021)
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
Chemistry, Multidisciplinary
Zhuzhu Shao, Xuan Zhang, Zihan Song, Jingfeng Liu, Xingang Liu, Chuhong Zhang
Summary: This study fabricates PVDF hollow fibers with adjustable wall thickness by using coaxial electrospinning. Simulation analysis shows that enlarging the inner diameter of the hollow fiber increases its effective deformation, resulting in enhanced piezoelectric output, which is consistent with the experimental results. This study is the first to reveal the influence mechanism of morphology regulation on the piezoelectric performance of PVDF hollow fibers from both simulation and experimental aspects. The optimal PVDF hollow fiber piezoelectric energy harvester (PEH) delivers a piezoelectric output voltage of 32.6 V, approximately 3 times that of the solid PVDF fiber PEH. Furthermore, the electrical output of the hollow fiber PEH can be stably stored in secondary energy storage systems to power microelectronics. This study provides an efficient approach for reconciling simulation and tailoring fiber PEH morphology to enhance performances for future self-powered systems.
Article
Engineering, Environmental
Charmaine Jia Mei Lye, Huijuan Xu, Rong Wang
Summary: The study demonstrates that reinforced PVDF hollow fiber membranes have excellent mechanical strength and resistance to chlorine, maintaining good membrane performance even after prolonged exposure to NaOCl.
JOURNAL OF WATER PROCESS ENGINEERING
(2021)
Article
Engineering, Chemical
Baiwang Zhao, Gui Min Shi, Juin-Yih Lai, Tai-Shung Chung
Summary: A braid-reinforced PBI hollow fiber membrane with high mechanical strength and low swelling ratio has been developed. The membrane shows improved separation performance and stability compared to self-supporting hollow fibers. The braid-reinforced membrane has potential applications in solvent resistant nanofiltration.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Article
Biotechnology & Applied Microbiology
Xuemei Ge, Shang Wu, Wen Shen, Lijuan Chen, Yan Zheng, Fen Ao, Yuanlan Ning, Yueyang Mao, Zhong Chen
Summary: In this study, gold nanoparticles and curcumin drug were incorporated into PVDF nanofibers using electrospinning. The morphological and drug release properties were characterized, and it was found that the addition of gold nanoparticles improved and prolonged the drug release. These results suggest the potential application of PVDF-AuNPs nanofiber membrane in nerve regeneration.
BIOENGINEERING-BASEL
(2022)
Article
Chemistry, Multidisciplinary
Saiji Shen, Jiayin Shen, Hongdou Shen, Chu Wu, Ping Chen, Qigang Wang
FRONTIERS IN CHEMISTRY
(2020)
Article
Chemistry, Multidisciplinary
Meiyuan Qi, Hui Pan, Hongdou Shen, Xianmeng Xia, Chu Wu, Xiaoke Han, Xingyue He, Wei Tong, Xia Wang, Qigang Wang
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2020)
Article
Engineering, Environmental
Mengli Ma, Yinghui Shang, Hongdou Shen, Wenjun Li, Qigang Wang
Summary: A novel ionohydrogel platform was developed using hydrated ionic liquid as a multifunctional solvent to achieve high conductivity, transparency, and a wide temperature range. The ionohydrogel has high ionic conductivity and transparency, with enhanced stability and expanded working window, making it an ideal material for fabricating wearable sensor devices for real-time motion monitoring.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Materials Science, Multidisciplinary
Xian He, Dongbei Wu, Yinghui Shang, Hongdou Shen, Songyan Xi, Xia Wang, Wenjun Li, Qigang Wang
Summary: Electrolyte regeneration is achieved through a facile strategy inspired by edible dough, transforming dehydrated copolymer granules (CGs) into hydrogel electrolytes. This efficient and quick procedure involves direct addition of water or salt solution, with the CGs proving to be lightweight, reusable, and stable under long-term storage. The regenerated hydrogel electrolytes exhibit high ionic conductivity, reprocessability, and 3D-printability, with potential applications in intelligent devices, wearable electronics, and soft robotics.
SCIENCE CHINA-MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Saiji Shen, Chu Wu, Yinghui Shang, Hongdou Shen, Yue Liao, Yuting Guo, Min Hu, Xia Wang, Gang Li, Qigang Wang
Summary: The study demonstrated the fabrication of a chitosan-polymer hydrogel with gradient network structure by utilizing the spatial diffusion of acetylacetone within the gel. The mechanical properties and water-retaining ability of the hydrogel were confirmed, showing potential applications in intelligent actuators and flexible robots.
SCIENCE CHINA-CHEMISTRY
(2022)
Article
Chemistry, Multidisciplinary
Yue Liao, Xia Wang, Hongdou Shen, Ziyang Tai, Qigang Wang
Summary: Cellular metabolism uses compartmentalized multienzyme efficient catalysis to realize substance metabolism, energy conversion and immune defenses. This study presents a convenient method of self-anchoring multienzymes within cell-like hydrogels using enzyme-initiated radical polymerization, resulting in higher activity, stability and recyclability compared to free enzymes.
SCIENCE CHINA-CHEMISTRY
(2022)
Article
Chemistry, Multidisciplinary
Yinghui Shang, Junjie Wei, Xian He, Jie Zhao, Hongdou Shen, Dongbei Wu, Tong Wu, Qigang Wang
Summary: This study proposes a strategy for fabricating flexible energy-storage devices by using a nest-structural and redox-active ionohydrogel. The nest-structure ionohydrogel provides sufficient highways and service area, and the in situ fabricated benzoquinone crystal-gel interface (CGI) acts as a redox-active membrane for electrochemical energy conversion and storage. Based on this platform, flexible supercapatteries with high stretchability, low self-discharge, and interfacial resistance are successfully fabricated, as well as a wearable, self-power, and intelligent display.
ADVANCED MATERIALS
(2023)
Review
Chemistry, Multidisciplinary
Junjie Wei, Peng Xiao, Tao Chen
Summary: Conductive gels have great potential in wearable sensing due to their conductivity, softness, stretchability, and biocompatibility. However, traditional conductive gels face challenges in underwater sensing due to swelling and loss of conductivity in aqueous environments. Advances in improving water resistance and application of conductive gels in underwater sensing have been made, but a comprehensive review is lacking. This review provides an overview of design strategies for developing water-resistant conductive gels and their applications in underwater sensing as wearable sensors, as well as discusses ongoing challenges and future recommendations.
ADVANCED MATERIALS
(2023)
Article
Polymer Science
Hongdou Shen, Pei Wang, Xiaoke Han, Mengli Ma, Yinghui Shang, Ye Ju, Saiji Shen, Feng Yin, Qigang Wang
Summary: Promising wound dressings can fill soft-tissue rapidly and recruit endogenous cells for tissue healing and regeneration. In this study, a biomolecule-responsive hydrogel matrix was developed with mechanical tunability and adjustable gelation times. The dual enzyme ratio in the hydrogels provided favorable biocompatibility and adhesion strength. Rat models demonstrated accelerated wound regeneration with collagen deposition, re-epithelialization, and revascularization.
Article
Chemistry, Multidisciplinary
Hui Pan, Bolin Zheng, Hongdou Shen, Meiyuan Qi, Yinghui Shang, Chu Wu, Rongrong Zhu, Liming Cheng, Qigang Wang
CHEMICAL COMMUNICATIONS
(2020)
