scholarly journals Biodegradable and biocompatible inorganic–organic hybrid materials: 4. Effect of acid content and water content on the incorporation of aliphatic polyesters into silica by the sol-gel process

Polymer ◽  
1999 ◽  
Vol 40 (4) ◽  
pp. 951-957 ◽  
Author(s):  
D. Tian ◽  
S. Blacher ◽  
R. Jerome
Keyword(s):  
Water Content ◽  
Hybrid Materials ◽  
Acid Content ◽  
Sol Gel ◽  
Aliphatic Polyesters ◽  
Organic Hybrid ◽  
Sol Gel Process

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 preparation of poly(methylsilsesquioxane) network-polyimide hybrid materials by the sol-gel process and their properties

1994 ◽  
Vol 6 (1) ◽  
pp. 43-52 ◽  
Author(s):  
Yoshitake Iyoku ◽  
Masa-aki Kakimoto ◽  
Yoshio Imai
Keyword(s):  
Hybrid Materials ◽  
Sol Gel ◽  
Tensile Modulus ◽  
Hybrid Films ◽  
Elongation At Break ◽  
Dimethyl Acetamide ◽  
Flexible Films ◽  
Sol Gel Process ◽  
Heating Up ◽  
Silicone Content

Poly(methylsilsesquixoane) network (silicone)-polyimide hybrid materials were successfully prepared by the sol-gel reaction of methyltriethoxysilane (MTES). The ethoxysilyl group in MTES was hydrolyzed and polycondensed in the solution of the polyamic acid, derived from pyromellitic dianhydride and bis(4-aminophenyl)ether, in N,N-dimethyl-acetamide (DMAc). The hybrid films were obtained by casting the reaction mixture, followed by heating up to 300°C. The hybrid materials containing 0-60wt% of silicone afforded flexible films. The films containing less than 7 wt% silicone were yellow and transparent, whereas the films with higher silicone content were yellow and opaque. Silicone particles with a diameter of around 1-10 μm were observed in the fracture surface of the hybrid films by scanning electron microscopy. Although the tensile strength and tensile modulus of the films obtained decreased with increasing silicone content. the value of the elongation at break remained at 60% up to 30% silicone content.

Investigations on the mobility of novel sol–gel processed inorganic–organic hybrid materials

2001 ◽  
Vol 11 (5) ◽  
pp. 1393-1401 ◽  
Author(s):  
Ekkehard Lindner ◽  
Stefan Brugger ◽  
Stefan Steinbrecher ◽  
Erich Plies ◽  
Hermann A. Mayer
Keyword(s):  
Hybrid Materials ◽  
Sol Gel ◽  
Organic Hybrid

Organic–inorganic hybrids having a talc-like structure as suitable hosts to guest a wide range of species

2018 ◽  
Vol 47 (9) ◽  
pp. 2925-2932 ◽  
Author(s):  
J. Brendlé
Keyword(s):  
Hybrid Materials ◽  
Sol Gel ◽  
Step Method ◽  
Mild Conditions ◽  
Condensation Reactions ◽  
Wide Range ◽  
Sol Gel Process ◽  
Hydrolysis And Condensation ◽  
One Step

The sol–gel process involving hydrolysis and condensation reactions is an attractive way to form siloxane based hybrid materials since it is a one-step method performed under mild conditions.

Homogeneous phase synthesis of chitosan silica hybrid materials in ionic liquid medium and adsorption of Fe(III) from aqueous solutions

2019 ◽  
Vol 38 (9) ◽  
pp. 586-597 ◽  
Author(s):  
Ananda S. Amarasekara ◽  
Deping Wang
Keyword(s):  
Ionic Liquid ◽  
Hybrid Materials ◽  
Sol Gel ◽  
Phase Reaction ◽  
Phase Synthesis ◽  
Homogeneous Phase ◽  
Sol Gel Process ◽  
Hydrolysis Of ◽  
Silica Hybrid ◽  
Ionic Liquid Medium

Two chitosan silica hybrid materials were prepared by a two-step process in 78–84% yields using the homogeneous phase reaction of 3-(triethoxysilyl)propyl isocyanate with chitosan dissolved in 1-n-butyl-3-methylimidazolium chloride ionic liquid (∼10% w/w), which was followed by NH4OH catalyzed hydrolysis of triethoxysilyl groups and then sol-gel process. These new hybrid materials were shown to adsorb up to about 95% of Fe3+ from 5 × 10−4 M aqueous solution at room temperature in 24 h.

Carboranyl Units Bringing Unusual Thermal and Structural Properties to Hybrid Materials Prepared by Sol−Gel Process

2006 ◽  
Vol 18 (18) ◽  
pp. 4344-4353 ◽  
Author(s):  
Arántzazu González-Campo ◽  
Bruno Boury ◽  
Francesc Teixidor ◽  
Rosario Núñez
Keyword(s):  
Structural Properties ◽  
Hybrid Materials ◽  
Sol Gel ◽  
Sol Gel Process

Research of Aluminum Sheet Encapsulated by Organic Silane Acrylate Resin and Tetraethyl Orthosilicate

2011 ◽  
Vol 399-401 ◽  
pp. 390-393
Author(s):  
Ai Huan Gao ◽  
Pi Hui Pi ◽  
Jiang Cheng ◽  
Zhuo Ru Yang
Keyword(s):  
Hybrid Film ◽  
Condensation Reaction ◽  
Sol Gel ◽  
Tetraethyl Orthosilicate ◽  
Aluminum Sheet ◽  
Aluminum Surface ◽  
Hydroxyl Groups ◽  
Organic Hybrid ◽  
Sol Gel Process ◽  
Acrylate Resin

Aluminum sheet was encapsulated by inorganic-organic hybrid film through a base catalyzed sol-gel method using organic acrylate silane resin PMBV and TEOS as precursors. FTIR and AFM characterizations prove that PMBV and TEOS have hydrolyzed and co-condensed with each other in the sol-gel process to form an uniform film on the surface of aluminum sheet. XPS result shows hydroxyl groups on aluminum surface have taken part in the co-condensation reaction.

scholarly journals Tuning the structure and the mechanical properties of epoxy–silica sol–gel hybrid materials

RSC Advances ◽  
2016 ◽  
Vol 6 (13) ◽  
pp. 10736-10742 ◽  
Author(s):  
Berta Domènech ◽  
Ignasi Mata ◽  
Elies Molins
Keyword(s):  
Mechanical Properties ◽  
Porous Material ◽  
Hybrid Materials ◽  
Sol Gel ◽  
Silica Sol ◽  
One Pot ◽  
Sol Gel Process

A new epoxy–silica porous material prepared via one-pot sol–gel process. Mechanical properties can be continuously tuned by modifying reactant proportions.

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