Phase-separation prevention and performance improvement of poly(vinyl acetate)/TEOS hybrid using modified sol-gel process

2001 ◽  
Vol 82 (9) ◽  
pp. 2310-2318 ◽  
Author(s):  
Jyongsik Jang ◽  
Joonwon Bae ◽  
Doohwan Kang
Keyword(s):  
Phase Separation ◽  
Performance Improvement ◽  
Vinyl Acetate ◽  
Sol Gel ◽  
Sol Gel Process ◽  
And Performance

Preparation of Macroprous C12A7 Mayenite Monoliths via a Sol-Gel Process with Nitrates as Precursors

2018 ◽  
Vol 768 ◽  
pp. 211-217 ◽  
Author(s):  
Rui Wang ◽  
Yu Kun Sun ◽  
Bao Jia Qi Jiang ◽  
Hui Yang ◽  
Xing Zhong Guo
Keyword(s):  
Heat Treatment ◽  
Phase Separation ◽  
Binary System ◽  
Propylene Oxide ◽  
Crystalline Phase ◽  
Sol Gel ◽  
Single Crystalline ◽  
Sol Gel Process

Macroporous Ca12Al14O33(C12A7) mayenite monoliths have been successfully prepared via a sol-gel process in the presence of propylene oxide (PO) and poly (ethyleneoxide) (PEO). Gelation of CaO-Al2O3binary system with nitrates salts as additional precursors is accelerated by PO as an acid scavenger, while PEO works as a phase separation inducer to mediate the phase separation of the system. Appropriate PO and PEO amounts allow the formation of monolithic xerogel with interconnected macropores and co-continuous skeletons. The resultant dried gels are amorphous and the single crystalline phase Ca12Al14O33mayenite forms after heat-treatment at 1100 °C in air, while the macrostructure is preserved with a porosity as high as 78% and smoother and denser skeletons.

Iron(iii) oxyhydroxide and oxide monoliths with controlled multiscale porosity: synthesis and their adsorption performance

2018 ◽  
Vol 6 (19) ◽  
pp. 9041-9048 ◽  
Author(s):  
Yosuke Hara ◽  
Kazuyoshi Kanamori ◽  
Kei Morisato ◽  
Riichi Miyamoto ◽  
Kazuki Nakanishi
Keyword(s):  
Phase Separation ◽  
Sol Gel ◽  
Adsorption Performance ◽  
Sol Gel Process

Iron(iii) oxyhydroxide and oxide monoliths with controlled multiscale porosity have been successfully fabricated via the sol–gel process accompanied by phase separation.

Synthesis of hierarchically porous MnO/C composites via a sol–gel process followed by two-step combustion for lithium-ion batteries

2020 ◽  
Vol 44 (28) ◽  
pp. 12307-12316
Author(s):  
Wei Liu ◽  
Daoyan Feng ◽  
Hui Yang ◽  
Xingzhong Guo
Keyword(s):  
Phase Separation ◽  
Lithium Ion Batteries ◽  
Sol Gel ◽  
Lithium Ion ◽  
Hierarchically Porous ◽  
Sol Gel Process

Hierarchically porous MnO/C composites with interconnected macropores and co-continuous skeletons were fabricated via a sol–gel process combined with phase separation, followed by a two-step combustion.

Novel approach of silica-PVA hybrid aerogel synthesis by simultaneous sol-gel process and phase separation

2020 ◽  
Vol 166 ◽  
pp. 104997
Author(s):  
Bartosz Babiarczuk ◽  
Daniel Lewandowski ◽  
Anna Szczurek ◽  
Krzysztof Kierzek ◽  
Matthias Meffert ◽  
...  
Keyword(s):  
Phase Separation ◽  
Sol Gel ◽  
Novel Approach ◽  
Sol Gel Process ◽  
Hybrid Aerogel

Preparation of ZrC/SiC porous self-supporting monoliths via sol-gel process using polyethylene glycol as phase separation inducer

2018 ◽  
Vol 38 (14) ◽  
pp. 4806-4813 ◽  
Author(s):  
Fei Li ◽  
Xin-Gang Wang ◽  
Xiao Huang ◽  
Ji-Xuan Liu ◽  
Weichao Bao ◽  
...  
Keyword(s):  
Phase Separation ◽  
Polyethylene Glycol ◽  
Sol Gel ◽  
Sol Gel Process
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