Lithium intercalation into borate xerogel during sol–gel process: synthesis, characterization and their property of lowering the thermal degradation temperature of polystyrene

2009 ◽  
Vol 50 (1) ◽  
pp. 8-14
Author(s):  
Chen Li ◽  
Chen Qin ◽  
Jianfeng Shen ◽  
Yizhe Hu ◽  
Binbin Zhang ◽  
...  
Keyword(s):  
Thermal Degradation ◽  
Sol Gel ◽  
Lithium Intercalation ◽  
Process Synthesis ◽  
Degradation Temperature ◽  
Sol Gel Process ◽  
Thermal Degradation Temperature

UV Curable Organic-Inorganic Hybrid Materials

2000 ◽  
Vol 628 ◽  
Author(s):  
Guang-Way Jang ◽  
Ren-Jye Wu ◽  
Yuung-Ching Sheen ◽  
Ya-Hui Lin ◽  
Chi-Jung Chang
Keyword(s):  
Hybrid Materials ◽  
Colloidal Silica ◽  
Sol Gel ◽  
Solution Ph ◽  
Uv Curable ◽  
Inorganic Hybrid ◽  
Degradation Temperature ◽  
Sol Gel Process ◽  
The Stability ◽  
Thermal Degradation Temperature

This work successfully prepared an UV curable organic-inorganic hybrid material consisting of organic modified colloidal silica. Applications of UV curable organic-inorganic hybrid materials include abrasion resistant coatings, photo-patternable thin films and waveguides. Colloidal silica containing reactive functional groups were also prepared by reacting organic silane and tetraethyl orthosilicate (TEOS) using sol-gel process. In addition, the efficiency of grafting organic moiety onto silica nanoparticles was investigated by applying TGA and FTIR techniques. Experimental results indicated a strong interdependence between surface modification efficiency and solution pH. Acrylate-SiO2 hybrid formation could result in a shifting of thermal degradation temperature of organic component from about 200°C to near 400°C. In addition, the stability of organic modified colloidal silica in UV curable formula and the physical properties of resulting coatings were discussed. Furthermore, the morphology of organic modified colloidal silica was investigated by performing TEM and SEM studies‥

The Sol–Gel Process Synthesis of GdAl3(BO3)4:Eu3+ Nanophosphors

2011 ◽  
Vol 11 (11) ◽  
pp. 9904-9907
Author(s):  
Lin-Jiu Xiao ◽  
Ying Xie ◽  
Ming-Rui He ◽  
Yi Xin ◽  
Yong-Jie Chen ◽  
...  
Keyword(s):  
Sol Gel ◽  
Process Synthesis ◽  
Sol Gel Process

scholarly journals Thermogravimetric analysis-based characterization of suitable biomass for alkaline peroxide treatment to obtain cellulose and fermentable sugars

BioResources ◽  
2020 ◽  
Vol 15 (3) ◽  
pp. 6217-6229
Author(s):  
Akihiro Hideno
Keyword(s):  
Thermogravimetric Analysis ◽  
Thermal Degradation ◽  
Rice Straw ◽  
Lignin Content ◽  
Cellulose Microfibrils ◽  
Crystalline Cellulose ◽  
Japanese Cypress ◽  
Alkaline Peroxide ◽  
Degradation Temperature ◽  
Thermal Degradation Temperature

To characterize a suitable biomass for alkaline peroxide treatment, four types of lignocellulosic biomass (rice straw, two Miscanthus spp., and Japanese cypress) were characterized using thermogravimetric analysis. Before the alkaline peroxide treatment, rice straw had the lowest initial thermal degradation temperature and Japanese cypress had the highest. After alkaline peroxide treatment, this trend was reversed, such that the highest initial thermal degradation temperature was for alkaline-peroxide treated rice straw. Hemicellulose and lignin content significantly affected the thermal degradation behavior and alkaline peroxide treatment efficiency. Among the four lignocelluloses, raw rice straw exhibited the highest reducing capability, whereas the treated rice straw exhibited the lowest reducing capability. Surface morphology and crystallinity indicated that when the rice straw was subjected to AP treatment at room temperature for 10 min, crystalline cellulose microfibrils were exposed and concentrated on the surface. Thus, among the samples tested, rice straw was found to be the most suitable biomass for alkaline peroxide treatment.

ChemInform Abstract: Sol-Gel Process Synthesis of High-Temperature Non-Oxide Ultrafine Powders

ChemInform ◽  
2014 ◽  
Vol 45 (17) ◽  
pp. no-no
Author(s):  
Haijun Zhang ◽  
Fang Fu ◽  
Yingnan Cao ◽  
Shuang Du ◽  
Lilin Lu ◽  
...  
Keyword(s):  
High Temperature ◽  
Sol Gel ◽  
Process Synthesis ◽  
Ultrafine Powders ◽  
Sol Gel Process

ChemInform Abstract: Microporous Oxides by the Sol-Gel Process: Synthesis and Applications

ChemInform ◽  
2010 ◽  
Vol 23 (36) ◽  
pp. no-no
Author(s):  
L. C. KLEIN ◽  
C. YU ◽  
R. WOODMAN ◽  
R. PAVLIK
Keyword(s):  
Sol Gel ◽  
Process Synthesis ◽  
Sol Gel Process

Properties of Coating Films Synthesized from Colloidal Silica and Methyltrimethoxysilane

2007 ◽  
Vol 544-545 ◽  
pp. 1037-1040
Author(s):  
Hoy Yul Park ◽  
Moon Kyong Na ◽  
Seog Young Yoon ◽  
Seong Soo Park
Keyword(s):  
Colloidal Silica ◽  
Sol Gel ◽  
Chemical Properties ◽  
Dip Coating ◽  
Coating Films ◽  
Glass Substrates ◽  
Degradation Temperature ◽  
Physical And Chemical ◽  
And Chemical Properties ◽  
Thermal Degradation Temperature

Colloidal silica/methyltrimethoxysilane (MTMS) sol solutions were prepared in variation with the ratio of MTMS to colloidal silica. Sol solutions were prepared by sol-gel reaction. To understand their physical and chemical properties, dip coating of sol solutions was performed on the glass substrates. The state of coating films was investigated in variation with the amount of MTMS and reaction time. The contact angle and thickness of coating films increased with an increasing amount of MTMS. The surface roughness of coating films decreased with an increasing amount of MTMS. Coating films were stable until 550°C. Thermal degradation temperature of coating films decreased with an increasing amount of MTMS.

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