scholarly journals Enhanced Specific Mechanism of Separation by Polymeric Membrane Modification—A Short Review

Membranes ◽  
2021 ◽  
Vol 11 (12) ◽  
pp. 942
Author(s):  
Anna Siekierka ◽  
Katarzyna Smolińska-Kempisty ◽  
Joanna Wolska
Keyword(s):  
Short Review ◽  
Polymeric Membrane ◽  
Specific Mechanism ◽  
Membrane Modification ◽  
Separation Processes ◽  
Preparation Methods ◽  
Molecularly Imprinted ◽  
Materials Used ◽  
Crucial Part ◽  
Mechanism Of Separation

Membrane technologies have found a significant application in separation processes in an exceeding range of industrial fields. The crucial part that is decided regarding the efficiency and effectivity of separation is the type of membrane. The membranes deal with separation problems, working under the various mechanisms of transportation of selected species. This review compares significant types of entrapped matter (ions, compounds, and particles) within membrane technology. The ion-exchange membranes, molecularly imprinted membranes, smart membranes, and adsorptive membranes are investigated. Here, we focus on the selective separation through the above types of membranes and detect their preparation methods. Firstly, the explanation of transportation and preparation of each type of membrane evaluated is provided. Next, the working and application phenomena are evaluated. Finally, the review discusses the membrane modification methods and briefly provides differences in the properties that occurred depending on the type of materials used and the modification protocol.

Memory Devices Based on Solid Electrolytes

2007 ◽  
Vol 997 ◽  
Author(s):  
Michael N Kozicki
Keyword(s):  
Data Storage ◽  
Solid Electrolytes ◽  
Short Review ◽  
High Resistivity ◽  
Material System ◽  
Resistance Change ◽  
Technology Roadmap ◽  
Conducting Pathway ◽  
Significant Research ◽  
Materials Used

AbstractCurrent mainstream memory technologies are unlikely to completely fulfill the solid state data storage requirements that will be imposed beyond the 32 nm node of the International Technology Roadmap for Semiconductors. One potential replacement technology is resistance change memory based on solid electrolytes and a number of significant research and development efforts are already underway. The lowering of the resistance is attained by the reduction of ions in a relatively high resistivity electrolyte to form a conducting bridge between the electrodes. The resistance is returned to the high value via the application of a reverse bias that results in the breaking of the conducting pathway. Germanium chalcogenides and Ag-Ge-S ternaries in particular possess good thermal processing characteristics while maintaining the necessary high ion mobility for rapid switching. Thermally diffused copper in deposited SiO2 also is of interest, as thermal stability in excess of 600°C and commonly used constituents makes this material system compatible with the widest range of back-end-of-line processes. This paper details some of the developments in the understanding of the materials used in solid electrolyte resistance change devices and presents a short review of the electrical characteristics of devices based on Ag-Ge-S and Cu-Si-O electrolytes.

scholarly journals Molecularly imprinted polymer-based potentiometric sensor based on covalent recognition for determination of dopamine

2021 ◽  
Author(s):  
Chan Wang ◽  
Longbin Qi ◽  
Rongning Liang
Keyword(s):  
Organic Compounds ◽  
Molecularly Imprinted Polymer ◽  
Potentiometric Sensor ◽  
Potentiometric Sensors ◽  
Polymeric Membrane ◽  
Imprinted Polymer ◽  
Molecularly Imprinted

Polymeric membrane potentiometric sensors based on molecularly imprinted polymer (MIP) have been successfully designed for detection of organic compounds both in ionic and neutral forms. However, most of these sensors...

scholarly journals Porous Polyvinyl Alcohol Membranes: Preparation Methods and Applications

Symmetry ◽  
2020 ◽  
Vol 12 (6) ◽  
pp. 960
Author(s):  
Andreas A. Sapalidis
Keyword(s):  
Melt Spinning ◽  
Mechanical Stability ◽  
Industrial Sector ◽  
Polymeric Membrane ◽  
Poly Vinyl Alcohol ◽  
Preparation Methods ◽  
Introductory Material ◽  
Film Forming ◽  
Great Progress ◽  
As Solubility

Polymeric membrane technology is a constantly developing field in both the research and industrial sector, with many applications considered nowadays as mature such as desalination, wastewater treatment, and hemodialysis. A variety of polymers have been used for the development of porous membranes by implementing numerous approaches such as phase inversion, electrospinning, sintering, melt-spinning and cold-stretching, 3D printing, and others. Depending on the application, certain polymer characteristics such as solubility to non-toxic solvents, mechanical and thermal stability, non-toxicity, resistance to solvents, and separation capabilities are highly desired. Poly (vinyl alcohol) (PVA) is a polymer that combines the above-mentioned properties with great film forming capabilities, good chemical and mechanical stability, and tuned hydrophilicity, rendering it a prominent candidate for membrane preparation since the 1970s. Since then, great progress has been made both in preparation methods and possible unique applications. In this review, the main preparation methods and applications of porous PVA based membranes, along with introductory material are presented.

Chitosan based hybrid materials used for wound healing applications- A short review

2019 ◽  
Vol 69 (7) ◽  
pp. 419-436 ◽  
Author(s):  
Zulfiqar Ali Khan ◽  
Shahrin Jamil ◽  
Amna Akhtar ◽  
Muhammad Mustehsan Bashir ◽  
Muhammad Yar
Keyword(s):  
Wound Healing ◽  
Hybrid Materials ◽  
Short Review ◽  
Materials Used

Quercetin Molecularly Imprinted Polymers and its Application in the Separation and Analysis of Natural Products

2015 ◽  
Vol 1083 ◽  
pp. 46-50
Author(s):  
Rui Mei Liu ◽  
Lai Gui ◽  
Shi Feng Dai ◽  
Yan Ju Zhang ◽  
Zhi Gang Xu
Keyword(s):  
Molecularly Imprinted Polymers ◽  
Selective Extraction ◽  
Medicinal Herbs ◽  
Chinese Medicinal Herbs ◽  
Separation And Purification ◽  
Preparation Methods ◽  
Molecularly Imprinted ◽  
Imprinted Polymers ◽  
Extraction And Purification ◽  
Effective Components

Molecularly imprinted polymers could selectively adsorb the target analytes from complex matrix. Chinese medicinal herbs had the characteristics of multi-component contents and complicated matrix. Molecularly imprinted polymers were very suitable for the selective extraction and purification of effective components in Chinese medicinal herbs. In this paper, the preparation methods of quercetin molecularly imprinted polymers and its applications in the separation and analysis of Chinese medicinal herbs were comprehensively reported. It would be a good reference for the selective separation and purification of quercetin in Chinese medicinal herbs.

scholarly journals Microscopic Analysis of Pottery Fragments from the Corded Ware Culture at Sites 11, 15 and 20 in Święte, Jarosław District

2018 ◽  
Vol 23 (1) ◽  
pp. 163-177 ◽  
Author(s):  
Anna Rauba-Bukowska
Keyword(s):  
Raw Materials ◽  
Microscopic Analysis ◽  
Mineralogical Composition ◽  
Crystalline Material ◽  
Petrographic Analysis ◽  
Type B ◽  
Preparation Methods ◽  
Heavy Clay ◽  
Materials Used ◽  
Natural Component

Abstract For microscopic examination, 22 pottery fragments from sites 11, 15 and 20 in Święte, Jarosław District were selected. The pottery types included beakers (N=19) and amphorae (N=3). The goal of the petrographic analysis was to identify mineralogical composition of ceramic fabric, sources of raw materials, and intentional additives to the clay. The analysis yielded data that helped determine ceramic fabrics types and preparation methods, as well as pottery firing conditions and approximate firing temperature. In all samples analysed, ceramic fabrics were prepared in a similar way, using heavy clay poor in muscovite, with grog deliberately added. Crystalline material present in some of the samples is most likely a natural component of raw materials used in the production process. No sand is added to the clay. No other method for preparing pastes was identified for the amphorae type. Previous observations on amphorae firing are confirmed: amphorae are fired in oxidizing conditions. The ceramic fabrics of two vessels have a deliberate admixture of bones in addition to grog and argillaceous rock intraclasts. Vessels decorated with cord impressions and vessels with herringbone or other incised patterns are more often made from paste type A (inclusion and grog) and paste type B (grog), respectively.

scholarly journals Nanocellulose as a Vehicle for Drug Delivery and Efficiency of Anticancer Activity: A Short-Review

2021 ◽  
Vol 1 (1) ◽  
pp. 30-43
Author(s):  
Mostafa Yusefi ◽  
Kamyar Shameli
Keyword(s):  
Drug Delivery ◽  
Drug Carrier ◽  
Short Review ◽  
Organic Polymer ◽  
Preparation Methods ◽  
Drug Delivery Vehicles ◽  
Research Fields ◽  
Polymeric Drug Delivery ◽  
Polymeric Drug ◽  
Delivery Vehicles

With the high demand of using nanotechnology, nanocellulose has become popular for different biomedical and anticancer applications. Cellulose, a nature gifted material and the most abundant organic polymer on earth, is systematically reviewed. Details of the mechanical and chemical structure of nanocellulose are explained, starting with preparation methods along with physiochemical properties and pH gradient to incorporate innovative polymeric drug delivery vehicles in anticancer applications. A myriad of research fields has introduced nanocellulose as an intriguing candidate for anticancer drug excipient and carrier in modern cancer therapy. Albeit, innovative nanocellulose-based drug carrier systems will be complicated for their commercial use in pharmacies. Of this, it is required to understand the preparation, properties, and potential drug conjugation of nanocellulose to improve its interactions with human tissues.

Antibacterial polymeric membranes: a short review

2018 ◽  
Vol 4 (8) ◽  
pp. 1078-1104 ◽  
Author(s):  
Munmun Mukherjee ◽  
Sirshendu De
Keyword(s):  
Short Review ◽  
Polymeric Membranes ◽  
Water Disinfection ◽  
Polymeric Membrane

Water disinfection mechanism of polymeric membrane.

Sign in / Sign up

Export Citation Format

Share Document