Results 21 to 30 of about 53,409 (285)

Asymmetric polyamide nanofilms with highly ordered nanovoids for water purification

Nature Communications, 2020
Structure and morphology are critical to the performance of permeable and selective polyamide membranes in water purification. Here, the authors report a two layer asymmetric polyamide nanofilm in which a spherical polyamide dendrimer porous lower and a ...
Bingbing Yuan, Shengchao Zhao, Ping Hu, Jiabao Cui, Q. Jason Niu   +4 more
doaj   +1 more source

The influence of surfactant structure on the dyeing of polyamide knitting with acid dyes [PDF]

Chemical Industry and Chemical Engineering Quarterly, 2018
The influence of nonionic and anionic surfactants on the dyeing kinetics of polyamide 6 knitting was studied in this work. The influence of surfactants on the dyeing process is presented by determining the kinetic and thermodynamic parameters of dyeing ...
Ristić Nebojša N., Dodić Ivica R., Ristić Ivanka P.   +2 more
doaj   +1 more source

Vacuum-Assisted Interfacial Polymerization Technique for Enhanced Pervaporation Separation Performance of Thin-Film Composite Membranes

Membranes, 2022
In this work, thin-film composite polyamide membranes were fabricated using triethylenetetramine (TETA) and trimesoyl chloride (TMC) following the vacuum-assisted interfacial polymerization (VAIP) method for the pervaporation (PV) dehydration of aqueous ...
Marwin R. Gallardo, Micah Belle Marie Yap Ang, Jeremiah C. Millare, Shu-Hsien Huang, Hui-An Tsai, Kueir-Rarn Lee   +5 more
doaj   +1 more source

Locating Hazardous Chemical Leakage Source Based on Cooperative Moving and Fixing Sensors

Sensors, 2019
In dealing with sudden hazardous chemical leakage accidents, the key to solving the evacuation and transfer of personnel and important property is to determine the location of the leakage source and the information of the source strength to gauge the ...
Yaguang Kong, Meng Guan, Song Zheng, Peng Jiang, Ling Wang, Xuefei Yao, Jian Lu, Chenfeng Xie, Fang Wang   +8 more
doaj   +1 more source

Permeability and chemical analysis of aromatic polyamide based membranes exposed to sodium hypochlorite [PDF]

, 2011
In this study, a cross-linked aromatic polyamide based reverse osmosis membrane was exposed to variable sodium hypochlorite ageing conditions (free chlorine concentration, solution pH) and the resulting evolutions of membrane surface chemical and ...
Causserand, Christel, Pierre Aimar, Emmanuelle Gaudichet-Maurin, Ettori, Axel, Christel Causserand, Aimar, Pierre, Schrotter, Jean-Christophe, Axel Ettori, Jean-Christophe Schrotter, Gaudichet-Maurin, Emmanuelle   +9 more
core   +1 more source

An In Situ Incorporation of Acrylic Acid and ZnO Nanoparticles into Polyamide Thin Film Composite Membranes for Their Effect on Membrane pH Responsive Behavior

Membranes, 2021
This paper focuses on an in situ interfacial polymerization modification of polyamide thin film composite membranes with acrylic acid (AA) and zinc oxide (ZnO) nanoparticles. Consequent to this modification, the modified polyamide thin film composite (PA–
Kgolofelo I. Malatjie, Bhekani S. Mbuli, Richard M. Moutloali, Catherine J. Ngila   +3 more
doaj   +1 more source

A new kinetic model for predicting polyamide 6-6 hydrolysis and its mechanical embrittlement [PDF]

, 2012
PA 6-6 hydrolysis at 60, 70, 80 and 90 °C in distilled water has been studied by Fourier transform infrared spectroscopy, viscometry in molten state, differential scanning calorimetry and uniaxial tensile testing.
COLIN, Xavier, EL MAZRY, Chaker, CORREC, Olivier, CORREC, O   +3 more
core   +1 more source

Mechanism of Hydration Induced Stiffening and Subsequent Plasticization of Polyamide Aerogel

Advanced Materials Interfaces, 2023
The mesoporous polyamide (PA) aerogel similar in chemical structure to DuPont's Kevlar is an advanced thermal insulation material tested in airspace applications.
Krisztián Moldován, Attila Forgács, Geo Paul, Leonardo Marchese, Adél Len, Zoltán Dudás, Sándor Kéki, István Fábián, József Kalmár   +8 more
doaj   +1 more source

Preclinical Study of DNA-Recognized Peptide Compound Pyrrole-Imidazole Polyamide Targeting Human TGF-β1 Promoter for Progressive Renal Diseases in the Common Marmoset

Molecules, 2019
Pyrrole-imidazole (PI) polyamides are novel gene silencers that strongly bind the promoter region of target genes in a sequence-specific manner to inhibit gene transcription. We created a PI polyamide targeting human TGF-β1 (hTGF-β1).
Masari Otsuki, Noboru Fukuda, Takashi Inoue, Takayuki Mineshige, Tomoyasu Otsuki, Shu Horikoshi, Morito Endo, Masanori Abe   +7 more
doaj   +1 more source

Variable Fitness Response of Two Rotifer Species Exposed to Microplastics Particles: The Role of Food Quantity and Quality

Toxics, 2021
Plastic pollution is an increasing environmental problem, but a comprehensive understanding of its effect in the environment is still missing. The wide variety of size, shape, and polymer composition of plastics impedes an adequate risk assessment.
Claudia Drago, Guntram Weithoff
doaj   +1 more source