Cycloaliphatic Epoxide Based Sol-Gel Derived Materials

1994 ◽  
Vol 346 ◽  
Author(s):  
G. A. Sigel ◽  
R.C. Domszy ◽  
W. C. Welch
Keyword(s):  
High Performance ◽  
Sol Gel ◽  
Mechanical Analysis ◽  
Processing Conditions ◽  
Coating Materials ◽  
Uv Curable ◽  
Organic Hybrid ◽  
High Performance Coating ◽  
Gel Composition

ABSTRACTScratch resistant transparent organically modified sol-gel materials typically utilize organics as acrylates, or pre-polymer silicon or carbon backbone material. The use of diepoxide monomers within a sol-gel matrix has yet to be described as a means of obtaining high performance coating materials. This paper describes the preparation and characterization of UV curable inorganic-organic hybrid glass materials based on the incorporation of cycloaliphatic diepoxide monomers into a sol-gel composition of TEOS and the epoxide silane coupling agent glycidoxypropyl-trimethoxysilane. We report aging and humidity studies along with processing conditions that affect the silicate distribution and cationic cure of the diepoxide resin based on solution and solid state NMR experiments. Mechanical analysis of thin films prepared by varying processing conditions and length of the diepoxide backbone are also discussed.

Cubic silsesquioxanes as tunable high-performance coating materials

2013 ◽  
Vol 27 (11) ◽  
pp. 652-659 ◽  
Author(s):  
Hyun Wook Ro ◽  
Vera Popova ◽  
Dave J. Krug ◽  
Aaron M. Forster ◽  
Richard M. Laine ◽  
...  
Keyword(s):  
High Performance ◽  
Coating Materials ◽  
High Performance Coating

scholarly journals Synthesis and characterization of a novel carboxyl group containing (co)polyimide with sulfur in the polymer backbone

2012 ◽  
Vol 8 ◽  
pp. 776-786 ◽  
Author(s):  
Miroslav Mrsevic ◽  
David Düsselberg ◽  
Claudia Staudt
Keyword(s):  
Organic Solvents ◽  
High Performance ◽  
Moisture Uptake ◽  
Separation Processes ◽  
Coating Materials ◽  
Polymer Backbone ◽  
Wide Range ◽  
Optical Applications ◽  
Transparent Polymers ◽  
High Performance Coating

Soluble functional (co)polyimides are of great interest in the area of separation processes or optical applications, due to their excellent mechanical-, thermal- and optical properties, their superior processability and the ability to adapt their properties to a wide range of special applications. Therefore, two series of novel (co)polyimides containing fluorinated sulfur- and carboxylic acid groups consisting of 4,4′-(hexafluoroisopropylidene)di(phthalic anhydride) (6FDA), 3,5-diaminobenzoic acid (DABA), 4,4′-diaminodiphenylsulfide (4,4′-SDA) and 3,3′-diaminodiphenylsulfone (3,3′-DDS) were synthesized in a two-step polycondensation reaction. The synthesized copolymers were characterized by using NMR, FTIR, GPC, and DSC. Furthermore, with regard to processing and potential applications, the thermal stability, solubility in common organic solvents, moisture uptake, and transparency were investigated. Compared to commercially available transparent polymers, i.e., polymethylmethacrylate and cycloolefin polymers, the sulfur (co)polyimides containing carboxyl groups showed much higher glass-transition temperatures, comparably low moisture uptake and high transmission at the sodium D-line. Furthermore, good solubility in commonly used organic solvents makes them very attractive as high-performance coating materials.

scholarly journals Synthesis and characterization of new biodegradable gels based on 2,2 '-(ethylenedioxy) diethanethiol and pentaerythritol triacrylate

2022 ◽  
Vol 320 (1) ◽  
pp. 25-31
Author(s):  
R.A. Shulen ◽  
◽  
D.S. Kazybayeva ◽  
Keyword(s):  
Raman Spectroscopy ◽  
Ir Spectroscopy ◽  
Sol Gel ◽  
Polymer Network ◽  
Crosslinking Density ◽  
Mechanical Analysis ◽  
Synthesis And Characterization ◽  
Prolonged Release ◽  
Click Polymerization

The work is devoted to the synthesis and characterization of gels based on the monomers pentaerythritol triaacrylate (PETriA) and 2,2 '-(ethylenedioxy)diethanethiol (EDODET) by thiol-ene "click" polymerization. The properties of the obtained gels were investigated by IR, Raman spectroscopy, mechanical analysis. Sol-gel analysis of obtained networks was carried out and the degradability was investigated. The results of IR spectroscopy confirmed the presence of -C = O and -C-O-C- groups in the composition of the obtained gels. The presence of unreacted C = C bonds conjugated with C = O, as well as thiol groups, varies depending on the composition of the initial monomer mixture (IMM). Raman spectroscopy results correlate well with IR data. Raman spectra also show C-S, S-S and SH characteristic bands that are difficult to identify by IR spectroscopy. It was found that the composition of MM affects the physicochemical properties of the synthesized gels. The highest yield of the gel fraction of obtained polymers was found in samples with an equimolar composition of IMM. The analysis of mechanical properties showed that gels with an excess of PETriA exhibit more elastic properties, and an excess of EDODET leads to the formation of networks with a higher crosslinking density. The study of the ability of obtained PETria-EDODET gels to degrade in a 3% solution of hydrogen peroxide showed that the polymer network degrades by 12% within 60 days. This property of the obtained gels can find application in the creation of targeted drug delivery systems with their prolonged release.

ChemInform Abstract: Cubic Silsesquioxanes as Tunable High-Performance Coating Materials.

ChemInform ◽  
2014 ◽  
Vol 45 (3) ◽  
pp. no-no
Author(s):  
Hyun Wook Ro ◽  
Vera Popova ◽  
Dave J. Krug ◽  
Aaron M. Forster ◽  
Richard M. Laine ◽  
...  
Keyword(s):  
High Performance ◽  
Coating Materials ◽  
High Performance Coating

Preparation and characterization of sol–gel derived UV-curable organo-silica–titania hybrid coatings

2007 ◽  
Vol 60 (2) ◽  
pp. 140-147 ◽  
Author(s):  
S. Karataş ◽  
C. Kızılkaya ◽  
N. Kayaman-Apohan ◽  
A. Güngör
Keyword(s):  
Sol Gel ◽  
Hybrid Coatings ◽  
Uv Curable

Preparation and characterization of UV curable waterborne poly(urethane-acrylate)/antimony doped tin oxide thermal insulation coatings by sol-gel process

2017 ◽  
Vol 113 ◽  
pp. 39-46 ◽  
Author(s):  
Kaihua Wu ◽  
Shanglin Xiang ◽  
Weiqiang Zhi ◽  
Renji Bian ◽  
Chenchen Wang ◽  
...  
Keyword(s):  
Thermal Insulation ◽  
Tin Oxide ◽  
Sol Gel ◽  
Urethane Acrylate ◽  
Uv Curable ◽  
Sol Gel Process
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