Results 331 to 340 of about 159,977 (388)

Inhibiting Polyamide Intrusion of Thin Film Composite Membranes: Strategies and Environmental Implications.

Environmental Science and Technology, 2023
Thin film composite polyamide (TFC) nanofiltration (NF) membranes represent extensive applications at the water-energy-environment nexus, which motivates unremitting efforts to explore membranes with higher performance.
Yukun Qian, Haozheng Li, Jiancong Lu, Dan-dan Lu, Hongyu Jin, Zhiyi Xia, Zhikan Yao, Jing Wang, Lin Zhang, C. Tang   +9 more
semanticscholar   +1 more source

Unveiling the Growth of Polyamide Nanofilms at Water/Organic Free Interfaces: Toward Enhanced Water/Salt Selectivity.

Environmental Science and Technology, 2022
The permeance and selectivity of a reverse osmosis (RO) membrane are governed by its ultrathin polyamide film, yet the growth of this critical film during interfacial polymerization (IP) has not been fully understood.
Shenghua Zhou, Li Long, Zhe Yang, Sik Lui So, Bowen Gan, Haofei Guo, S. Feng, C. Tang   +7 more
semanticscholar   +1 more source

Enhancing the Antifouling Ability of a Polyamide Nanofiltration Membrane by Narrowing the Pore Size Distribution via One-Step Multiple Interfacial Polymerization.

ACS Applied Materials and Interfaces, 2022
Application of nanofiltration membranes in industries still has to contend with membrane fouling that causes a significant loss of separation performance.
Lulu Liu, Xiangrong Chen, Shichao Feng, Y. Wan, Jianquan Luo   +4 more
semanticscholar   +1 more source

Evaluation of the Effect of Different Construction Techniques of CAD-CAM Milled, 3D-Printed, and Polyamide Denture Base Resins on Flexural Strength: An In Vitro Comparative Study.

Journal of Prosthodontics, 2022
PURPOSE To compare the flexural strength of computer-aided design and computer-aided manufacturing (CAD-CAM) milled denture base resin (DBR), 3D-printed DBR, polyamide, and conventional compression-molded DBR.
A. Zeidan, Ahmed Fadllah, Y. Baraka, Reem Abualsaud, Ramy Abdallah Abdelrahim, Mohammed M. Gad, M. A. Helal   +6 more
semanticscholar   +1 more source

Ionic Dendrimer Based Polyamide Membranes for Ion Separation.

ACS Nano, 2021
Separating low/high-valent ions with sub-nanometer sizes is a crucial yet challenging task in various areas (e.g., within environmental, healthcare, chemical, and energy engineering).
Ze-Lin Qiu, Lifeng Fang, Yu-Jie Shen, Wen-Han Yu, Bao-ku Zhu, C. Hélix-Nielsen, Wenjing Zhang   +6 more
semanticscholar   +1 more source

Miscibility of polyamide-6,6 with aromatic polyamides

Polymer Bulletin, 1996
The polyamides with aromatic rings in the main chain were synthesized by the solution polymerization of 4,4′-diphenylmethane diisocyanate and aliphatic dicarboxylic acid in the presence of catalyst. The thermal properties and the miscibility behaviours with polyamide-6,6 of these aromatic polyamides were studied.
Jung Ho Kim, Soon Won Moon, Tae Oan Ahn, Han Mo Jeong   +3 more
openaire   +2 more sources

Polyamide Covalent Organic Framework Membranes for Molecular Sieving.

ACS Applied Materials and Interfaces, 2022
Polyamide is an important class of membrane materials for separation technology. The polyamide membranes currently used are amorphous, and thus, their pore structures are disordered, which inevitably decreases their performance in separation.
Ya Lu, Zhihong Zhou, Qiao-Yan Qi, Jin Yao, Xin Zhao   +4 more
semanticscholar   +1 more source

Ultraselective and Highly Permeable Polyamide Nanofilms for Ionic and Molecular Nanofiltration

Advanced Functional Materials, 2020
Membranes with ultrahigh ion selectivity and high liquid permeance are needed to produce high‐quality product water with increased recovery and process efficiency in water desalination.
Pulak Sarkar, S. Modak, S. Karan
semanticscholar   +1 more source

Biodegradation of polyamides

Polymer Degradation and Stability, 1998
Abstract Naturally occurring homopolyamides are linear poly(amino acids) consisting either of glutamic acid (poly[γ glutamic acid], γ-PGA), lysine (poly[ɛ lysine]) or arginylaspartic acid (poly[α arginylaspartic acid], cyanophycin). γ-PGA is synthesized as the major component of capsules and slimes of several Gram-positive bacteria.
S. Pickartz, Alexander Steinbüchel, Fred Bernd Oppermann   +2 more
openaire   +2 more sources

Polyamid in Tanksystemen

ATZ - Automobiltechnische Zeitschrift, 2013
Neu entwickelte Polyamid-Materialien sind seit einigen Jahren in verschiedenen Bauteilen von Tanksystemen im Einsatz. Die Verwendung von beispielsweise Polyamid 6 fuer Kunststofftanks kann jedoch unter gewissen Umstaenden zu unerwuenschten Nebeneffekten wie zum Beispiel Schadensfaellen mit verstopften Einspritzduesen und Treibstoffleitungen sowie ...
Gabriele C. Eder, Boril Stefanov Chernev
openaire   +2 more sources