Results 61 to 70 of about 38,523 (307)

Synthesis of high molecular weight polyimide consisting hexafluoroisopropylidene moiety for gas separation

Journal of Mechanical Engineering and Sciences, 2017
In this work, high molecular weight of heterocyclic aromatic polyimide consisting hexafluoroisopropylidene moiety in both diamine and dianhydride fragments was synthesised.
N.A. Mokri, P.C. Oh, H. Mukhtar, T.L. Chew   +3 more
doaj   +1 more source

Preparation and characterization of matrix-graded polyimide composite along thickness direction

Journal of Aeronautical Materials, 2022
A resin-transfer-molding (RTM) polyimide resin, RTM-PI, was developed, and the matrix-graded polyimide composite along thickness directions was fabricated with RTM processing.
NI Hongjiang, LI Jun, XING Yu, ZHANG Daijun, CHEN Xiangbao   +4 more
doaj   +1 more source

Sulfonated polyimide/PTFE reinforced membrane for PEMFCs

, 2007
A sulfonated polyimide (SPI)/PTFE reinforced membrane was synthesized by impregnating PTFE (porous polytetrafluoroethylene) membrane with a SPI/DMSO solution.
Zhang, H. M., Liu, Y. H., 衣宝廉, Xing, D. M., Yi, B. L., Cai, Y. H., Shao, Z.-G., Wang, L.   +7 more
core   +1 more source

Polyimide-Based Covalent Organic Framework as a Photocurrent Enhancer for Efficient Dye-Sensitized Solar Cells

, 2022
Covalent organic frameworks (COFs) are of great interest in the energy and optoelectronic fields due to their high porosity, superior thermal stability, and highly ordered conjugated architecture, which are beneficial for charge migration, charge ...
Pei-Hsuan Chang (12598866), Kamani Sudhir K. Reddy (4750995), Chih-Ming Chen (132037), Manik Chandra Sil (3395639), Ching-Hsuan Lin (403948)   +4 more
core   +1 more source

Portable Breathing Monitoring With Phase‐Resolved Airflow Dynamics Enabled by a Dual‐Response Flexible PZT Sensor

Advanced Healthcare Materials, EarlyView.
A portable respiratory monitoring device based on a flexible PZT sensor captures pressure‐ and temperature‐related airflow responses in a single waveform. Polarity‐opposed piezoelectric and pyroelectric components generate a narrow transient spike and a broad quasi‐steady peak during both inhalation and exhalation. This dual‐component structure enables
Minyu Li, Jun Aoyama, Yuchao Wu, Tomomi Uchiyama, Kosho Yoshikawa, Toshiki Mano, Yuxi Song, Hedong Zhang   +7 more
wiley   +1 more source

Flexible Azo-Polyimide-Based Smart Surface with Photoregulatable Surface Micropatterns: Toward Rewritable Information Storage and Wrinkle-Free Device Fabrication

, 2023
Stimulus-sensitive materials are of great fascination in surface and interface science owing to their dynamically tunable surface properties and/or morphologies.
Peiming Xu (9755574), Liang Yuan, Chunhua Zhou (4707964), Chuanyong Zong, Chuanyong Zong (1659493), Hui Li (32376), Guangzeng Luo, Jian Chen (15340), Peiming Xu, Jian Chen, Liang Yuan (197658), Chunhua Zhou, Zhilu Gao, Guangzeng Luo (14591950), Hui Li, Yuxin Li, Zhilu Gao (14591953), Yuxin Li (119468)   +17 more
core   +1 more source

Atomic Layer Deposition Processes: Versatile Platforms for Engineering ZnO‐Chitosan Biointerfaces

Advanced Healthcare Materials, EarlyView.
Vapour phase metalation (VPM), multiplied pulsed vapour phase infiltration (MPI), and O2 plasma‑enhanced atomic layer deposition (PEALD) tailor Zn–chitosan (Zn‑CS) films. PEALD improves wettability and biocompatibility. MPI enhances semiconductor behavior. Antiseptic selectivity: VPM → E. coli; MPI → H. pylori.
Mabel Moreno, Anjana Devi, David Zanders, Miryam Arredondo, Davide Mariotti, Ruairi McGlynn, Sindy Devis, Simón Guerrero, Eglantina Benavente, Matias Alegría, Yusser Olguin, Lorena Lobos‐Gonzalez, Kevin Guzmán, Elizabeth Rivas‐Yañez, Paula Solar, Valentin Cepus, Michael Krause, Luis Velásquez   +17 more
wiley   +1 more source

Linear and crosslinked polyimide aerogels: synthesis and characterization

Journal of Materials Research and Technology, 2019
Linear and crosslinked polyimide aerogels have been synthesized by means of a simple and eco-friendly process. Water-soluble poly(amic acid), PAA, solution was produced and thermal imidization was employed. Furthermore, freeze drying was used.
Carolina Simón-Herrero, Xiao-Yuan Chen, Maria Luz Ortiz, Amaya Romero, José L. Valverde, Luz Sánchez-Silva   +5 more
doaj   +1 more source

Study on Thermal Properties and Mechanical Properties of Short-cut Polyimide-Fiber Reinforced Polyphenyl Sulfone Composites [PDF]

MATEC Web of Conferences, 2019
In order to increase the thermal stability and mechanical property of PPSU, two different polyimide (PI) short cut fibers reinforced polyphenyl sulfone (PPSU) composites were prepared by melt extrusion using a threescrew extruder.
Yao Weizhou, Yao Jianan, Jiao Qing, Wei Yunhai, Yu Tianpeng, Yu Youhai, Li Hui   +6 more
doaj   +1 more source

Engineered AuNPs/fMWCNT Nanocomposite Electrodes for High‐Sensitivity Methylglyoxal Sensing in Saliva and Sweat for Non‐Invasive Diabetes Monitoring

Advanced Healthcare Materials, EarlyView.
An AuNPs/fMWCNT nanocomposite‐modified screen‐printed carbon electrode was engineered via sequential electrodeposition and integrated into a 3D‐printed microfluidic platform for ultrasensitive methylglyoxal detection. The non‐invasive sensing platform enables rapid analysis in saliva and sweat, highlighting strong potential for wearable point‐of‐care ...
Ahadul Amin Soshi, Md Younus Ali, Dadbeh Pazuki, Matiar M.R. Howlader   +3 more
wiley   +1 more source