Preparation of Poly(Ionic Liquid) Microbeads via Cooling‐Assisted Phase Separation Method

2021 ◽  
pp. 2100275
Author(s):  
Qi Lei ◽  
Jia Zhao ◽  
Fang He ◽  
Xiaopeng Zhao ◽  
Jianbo Yin
Keyword(s):  
Ionic Liquid ◽  
Phase Separation ◽  
Separation Method ◽  
Poly Ionic Liquid

Preparation of Poly(ionic liquid) Microbeads by Evaporation‐Assisted Phase Separation

2022 ◽  
pp. 2100379
Author(s):  
Qi Lei ◽  
Fang He ◽  
Xiaopeng Zhao ◽  
Jianbo Yin
Keyword(s):  
Ionic Liquid ◽  
Phase Separation ◽  
Poly Ionic Liquid

Vapor induced phase separation towards anion-/near-infrared-responsive pore channels for switchable anti-fouling membranes

2020 ◽  
Vol 8 (18) ◽  
pp. 8934-8948
Author(s):  
Ran Wei ◽  
Jiabei Guo ◽  
Lunqiang Jin ◽  
Chao He ◽  
Yi Xie ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Phase Separation ◽  
Near Infrared ◽  
Poly Ionic Liquid

Development of anion-/near-infrared-responsive and anti-fouling membranes fabricated through vapor induced phase separation based on poly(ionic liquid) nanoparticles.

scholarly journals Overcoming the Phase Separation within High–Entropy Metal Carbide by Poly(ionic liquid)s

2021 ◽  
Author(s):  
Yan Leng ◽  
Zihao Zhang ◽  
Hao Chen ◽  
Shengyu Du ◽  
Jixing Liu ◽  
...  
Keyword(s):  
Free Energy ◽  
Ionic Liquid ◽  
Phase Separation ◽  
Metal Ions ◽  
Metal Carbide ◽  
Metal Carbides ◽  
Crystalline Materials ◽  
Energy Value ◽  
High Entropy ◽  
Poly Ionic Liquid

High-entropy crystalline materials are attracting more attention. In principle, high–entropy metal carbides (HMCs) that contain five or more metal ions, possess more negative free energy value during catalysis. But its...

Phase separation in sol gel-derived ceramic films of silica-zirconia, alumina-zirconia, and titania-zirconia system

1994 ◽  
Vol 52 ◽  
pp. 646-647
Author(s):  
J. Tong ◽  
L. Eyring
Keyword(s):  
Fracture Toughness ◽  
Phase Separation ◽  
Sol Gel ◽  
Great Influence ◽  
High Strength ◽  
Chemical Durability ◽  
Separation Method ◽  
Toughening Mechanism ◽  
Ceramic Films ◽  
Zirconia Toughened Alumina

There is increasing interest in composites containing zirconia because of their high strength, fracture toughness, and its great influence on the chemical durability in glass. For the zirconia-silica system, monolithic glasses, fibers and coatings have been obtained. There is currently a great interest in designing zirconia-toughened alumina including exploration of the processing methods and the toughening mechanism.The possibility of forming nanocrystal composites by a phase separation method has been investigated in three systems: zirconia-alumina, zirconia-silica and zirconia-titania using HREM. The morphological observations initially suggest that the formation of nanocrystal composites by a phase separation method is possible in the zirconia-alumina and zirconia-silica systems, but impossible in the zirconia-titania system. The separation-produced grain size in silica-zirconia system is around 5 nm and is more uniform than that in the alumina-zirconia system in which the sizes of the small polyhedron grains are around 10 nm. In the titania-zirconia system, there is no obvious separation as was observed in die alumina-zirconia and silica-zirconia system.

A Novel Poly(Ionic Liquid) as the Thermal Insulating Material

2020 ◽  
Vol 13 (3) ◽  
pp. 241-247
Author(s):  
Wenxin Wei ◽  
Guifeng Ma ◽  
Hongtao Wang ◽  
Jun Li
Keyword(s):  
Thermal Conductivity ◽  
Ionic Liquid ◽  
Glass Transition ◽  
Transition Temperature ◽  
Glass Transition Temperature ◽  
Flame Resistance ◽  
Insulating Material ◽  
Low Thermal Conductivity ◽  
Thermal Insulating ◽  
Poly Ionic Liquid

Objective: A new poly(ionic liquid)(PIL), poly(p-vinylbenzyltriphenylphosphine hexafluorophosphate) (P[VBTPP][PF6]), was synthesized by quaternization, anion exchange reaction, and free radical polymerization. Then a series of the PIL were synthesized at different conditions. Methods: The specific heat capacity, glass-transition temperature and melting temperature of the synthesized PILs were measured by differential scanning calorimeter. The thermal conductivities of the PILs were measured by the laser flash analysis method. Results: Results showed that, under optimized synthesis conditions, P[VBTPP][PF6] as the thermal insulator had a high glass-transition temperature of 210.1°C, high melting point of 421.6°C, and a low thermal conductivity of 0.0920 W m-1 K-1 at 40.0°C (it was 0.105 W m-1 K-1 even at 180.0°C). The foamed sample exhibited much low thermal conductivity λ=0.0340 W m-1 K-1 at room temperature, which was comparable to a commercial polyurethane thermal insulating material although the latter had a much lower density. Conclusion: In addition, mixing the P[VBTPP][PF6] sample into polypropylene could obviously increase the Oxygen Index, revealing its efficient flame resistance. Therefore, P[VBTPP][PF6] is a potential thermal insulating material.

scholarly journals FORMULATION AND IN VITRO, IN VIVO EVALUATION OF PRONIOSOMAL GEL OF NEOMYCIN SULPHATE

2019 ◽  
pp. 156-163
Author(s):  
AMOL SHETE ◽  
PRIYANKA THORAT ◽  
RAJENDRA DOIJAD ◽  
SACHIN SAJANE
Keyword(s):  
Phase Separation ◽  
Skin Irritation ◽  
Entrapment Efficiency ◽  
Separation Method ◽  
Gelling Agent ◽  
In Vivo Evaluation ◽  
Skin Delivery ◽  
Span 60

Objective: The objectives of present investigation were to prepare and evaluate proniosomes of neomycin sulphate (NS) by coacervation phase separation method by using sorbitan monostearate (span 60) and lecithin as a surfactant to increase the penetration through the skin and study the effect of concentration of the same. Methods: Proniosomes of neomycin sulphate (NS) were prepared by coacervation phase separation method by using span 60 and lecithin. The effect of concentration of span 60 and lecithin was studied by factorial design. The prepared proniosomes were converted to gel by using carbopol as a gelling agent. The prepared formulations were evaluated for entrapment efficiency, in vitro drug diffusion, in vitro antibacterial activity and in vivo skin irritation test etc. Results: All Formulation showed the percentage entrapment efficiency in the range 38.31±0.05% to 77.96±0.06%, good homogeneity and gel was easily spreadable with minimal of shear. Optimized formulation showed enhanced rate of diffusion in vitro, increase in zone of inhibition against staphylococcus aureus, no skin irritation and showed good stability. Conclusion: The results of present study indicates that proniosomal gel formulated by using combination of span 60, Lecithin, cholesterol can be used to enhance skin delivery of NS because of excellent permeation of drug. Developed proniosomal gel formulation was promising carrier for NS

Sign in / Sign up

Export Citation Format

Share Document