Thermal stability, swelling behavior and CO2 absorption properties of Nanoscale Ionic Materials (NIMs)

RSC Advances ◽  
2014 ◽  
Vol 4 (110) ◽  
pp. 65195-65204 ◽  
Author(s):  
Kun-Yi Andrew Lin ◽  
Youngjune Park ◽  
Camille Petit ◽  
Ah-Hyung Alissa Park
Keyword(s):  
Thermal Stability ◽  
Swelling Behavior ◽  
Co2 Absorption ◽  
Absorption Properties ◽  
Charged Species ◽  
The Core ◽  
Ionic Materials ◽  
Oppositely Charged

Nanoscale Ionic Materials (NIMs) consist of a nanoscale core, a corona of charged brushes tethered on the surface of the core, and a canopy of the oppositely charged species linked to the corona.

scholarly journals Acoustic Panels Made of Paper Sludge and Clay Composites

2021 ◽  
Vol 13 (2) ◽  
pp. 637
Author(s):  
Tomas Astrauskas ◽  
Tomas Januševičius ◽  
Raimondas Grubliauskas
Keyword(s):  
Absorption Coefficient ◽  
Sound Absorption ◽  
Composite Panel ◽  
Sound Absorption Coefficient ◽  
Core Material ◽  
Paper Sludge ◽  
Frequency Range ◽  
Absorption Properties ◽  
Air Gaps ◽  
The Core

Studies on recycled materials emerged during recent years. This paper investigates samples’ sound absorption properties for panels fabricated of a mixture of paper sludge (PS) and clay mixture. PS was the core material. The sound absorption was measured. We also consider the influence of an air gap between panels and rigid backing. Different air gaps (50, 100, 150, 200 mm) simulate existing acoustic panel systems. Finally, the PS and clay composite panel sound absorption coefficients are compared to those for a typical commercial absorptive ceiling panel. The average sound absorption coefficient of PS-clay composite panels (αavg. in the frequency range from 250 to 1600 Hz) was up to 0.55. The resulting average sound absorption coefficient of panels made of recycled (but unfinished) materials is even somewhat higher than for the finished commercial (finished) acoustic panel (αavg. = 0.51).

scholarly journals Solubilization of Charged Porphyrins in Interpolyelectrolyte Complexes: A Computer Study

Polymers ◽  
2021 ◽  
Vol 13 (4) ◽  
pp. 502
Author(s):  
Karel Šindelka ◽  
Zuzana Limpouchová ◽  
Karel Procházka
Keyword(s):  
Dissipative Particle Dynamics ◽  
Water Soluble ◽  
Coarse Grained ◽  
Core Shell ◽  
Computer Study ◽  
Interpolyelectrolyte Complex ◽  
The Core ◽  
Porphyrin Derivatives ◽  
Oppositely Charged ◽  
Positively Charged

Using coarse-grained dissipative particle dynamics (DPD) with explicit electrostatics, we performed (i) an extensive series of simulations of the electrostatic co-assembly of asymmetric oppositely charged copolymers composed of one (either positively or negatively charged) polyelectrolyte (PE) block A and one water-soluble block B and (ii) studied the solubilization of positively charged porphyrin derivatives (P+) in the interpolyelectrolyte complex (IPEC) cores of co-assembled nanoparticles. We studied the stoichiometric mixtures of 137 A10+B25 and 137 A10−B25 chains with moderately hydrophobic A blocks (DPD interaction parameter aAS=35) and hydrophilic B blocks (aBS=25) with 10 to 120 P+ added (aPS=39). The P+ interactions with other components were set to match literature information on their limited solubility and aggregation behavior. The study shows that the moderately soluble P+ molecules easily solubilize in IPEC cores, where they partly replace PE+ and electrostatically crosslink PE− blocks. As the large P+ rings are apt to aggregate, P+ molecules aggregate in IPEC cores. The aggregation, which starts at very low loadings, is promoted by increasing the number of P+ in the mixture. The positively charged copolymers repelled from the central part of IPEC core partially concentrate at the core-shell interface and partially escape into bulk solvent depending on the amount of P+ in the mixture and on their association number, AS. If AS is lower than the ensemble average ⟨AS⟩n, the copolymer chains released from IPEC preferentially concentrate at the core-shell interface, thus increasing AS, which approaches ⟨AS⟩n. If AS>⟨AS⟩n, they escape into the bulk solvent.

CO2 absorption properties of Ti- and Na-doped porous Li4SiO4 prepared by a sol–gel process

2015 ◽  
Vol 50 (13) ◽  
pp. 4698-4706 ◽  
Author(s):  
Maoqiao Xiang ◽  
Yingchun Zhang ◽  
Ming Hong ◽  
Shuyan Liu ◽  
Yun Zhang ◽  
...  
Keyword(s):  
Sol Gel ◽  
Co2 Absorption ◽  
Absorption Properties ◽  
Sol Gel Process

scholarly journals Ion Dynamics and CO2 Absorption Properties of Nb-, Ta-, and Y-Doped Li2ZrO3 Studied by Solid-State NMR, Thermogravimetry, and First-Principles Calculations

2017 ◽  
Vol 121 (40) ◽  
pp. 21877-21886 ◽  
Author(s):  
Matthew T. Dunstan ◽  
Hannah Laeverenz Schlogelhofer ◽  
John M. Griffin ◽  
Matthew S. Dyer ◽  
Michael W. Gaultois ◽  
...  
Keyword(s):  
Solid State ◽  
First Principles ◽  
Solid State Nmr ◽  
Co2 Absorption ◽  
Ion Dynamics ◽  
First Principles Calculations ◽  
Absorption Properties

Microwave absorption properties of the core/shell-type iron and nickel nanoparticles

2008 ◽  
Vol 320 (6) ◽  
pp. 1106-1111 ◽  
Author(s):  
B. Lu ◽  
X.L. Dong ◽  
H. Huang ◽  
X.F. Zhang ◽  
X.G. Zhu ◽  
...  
Keyword(s):  
Microwave Absorption ◽  
Nickel Nanoparticles ◽  
Core Shell ◽  
Absorption Properties ◽  
Microwave Absorption Properties ◽  
The Core ◽  
Shell Type

Thermal Stability Study of the Core Loss of Laser Etched Grain Oriented Silicon Steel

Applied laser ◽  
2015 ◽  
Vol 35 (1) ◽  
pp. 83-87
Author(s):  
朱虹 Zhu Hong ◽  
郭亮 Guo Liang ◽  
张庆茂 Zhang Qingmao
Keyword(s):  
Thermal Stability ◽  
Core Loss ◽  
Stability Study ◽  
Silicon Steel ◽  
The Core ◽  
Thermal Stability Study

Li2SiO3 fast microwave-assisted hydrothermal synthesis and evaluation of its water vapor and CO2 absorption properties

Particuology ◽  
2016 ◽  
Vol 24 ◽  
pp. 129-137 ◽  
Author(s):  
J. Ortiz-Landeros ◽  
R. López-Juárez ◽  
I.C. Romero-Ibarra ◽  
H. Pfeiffer ◽  
H. Balmori-Ramírez ◽  
...  
Keyword(s):  
Water Vapor ◽  
Hydrothermal Synthesis ◽  
Co2 Absorption ◽  
Absorption Properties ◽  
Microwave Assisted

CO2 absorption properties of Brønsted acid–base ionic liquid composed of N,N-dimethylformamide and bis(trifluoromethanesulfonyl)amide

2010 ◽  
Vol 52 (2) ◽  
pp. 189-192 ◽  
Author(s):  
Daisuke Kodama ◽  
Mitsuhiro Kanakubo ◽  
Masaki Kokubo ◽  
Takeshi Ono ◽  
Hajime Kawanami ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Co2 Absorption ◽  
Bronsted Acid ◽  
Brønsted Acid ◽  
Acid Base ◽  
Absorption Properties ◽  
Brönsted Acid

Preparation of Fibrous CaO Sorbent by Hydrothermal Method

2012 ◽  
Vol 534 ◽  
pp. 86-88
Author(s):  
Shi Mei Yang ◽  
Shao Yun Shan ◽  
Qing Ming Jia ◽  
Ting Wei Hu ◽  
Li Hong Jiang ◽  
...  
Keyword(s):  
Hydrothermal Method ◽  
Absorption Capacity ◽  
Co2 Absorption ◽  
X Ray Diffraction ◽  
Absorption Properties ◽  
Hydrothermal Temperature ◽  
Crystal Forms ◽  
Electron Microscopy Analysis ◽  
Calcium Source ◽  
Microscopy Analysis

Using urea and calcium chloride as precipitator and calcium source, fibrous CaCO3 precursors were prepared using hydrothermal method, then fibrous CaO sorbent was obtained by calcination. The influence of hydrothermal temperature on CO2 absorption properties was discussed. X-ray diffraction analysis showed that pure CaCO3 phase with aragonite and calcite crystal forms was obtained. Scanning electron microscopy analysis showed that the resultant CaO sorbent presented a fibrous microstructure, which inherited the morphologies of CaCO3. The absorption capacity of the resultant CaO sorbent reached 59.86%, being 76% of theoretical absorption capacity. In addition, compared with the CaO sorbent from analytical pure CaCO3, the obtained fibrous CaO-sorbent have the better cyclic absorption properties.

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