Synthesis and Characterization of UV-Thermal Dual Hybrid Curable Organosilicon Modified Epoxy Monoacrylates

2012 ◽  
Vol 152-154 ◽  
pp. 657-660
Author(s):  
Hong Bo Liu ◽  
Feng Lin ◽  
Wu Ying Zhang
Keyword(s):  
Fourier Transform ◽  
Synthesis Process ◽  
Synthesis And Characterization ◽  
Titration Method ◽  
Uv Curable ◽  
Oh Groups ◽  
Acrylic Ester ◽  
Modified Epoxy ◽  
Epoxy Groups

New UV-thermal dual hybrid curable organosilicon-modified epoxy monoacrylates (OMEMA) were synthesized in this study. The changes of NCO groups during the synthesis process of OMEMA were measured by chemical titration method, and its Fourier Transform Infrared (FTIR) spectra were investigated. The results indicate that organosilicon chain segments can be grafted onto the epoxy monacrylates (EMA) by the reaction of NCO and OH groups. The FTIR of OMEMA show that it contains both double bond of acrylic ester (UV curable) and epoxy groups (thermal curable).

Polyurethane-Modified Epoxy Monoacrylates Containing Two Different UV-Curable Groups: Preparation and Charaterization

2012 ◽  
Vol 554-556 ◽  
pp. 168-171
Author(s):  
Feng Lin ◽  
Hong Bo Liu ◽  
Ling Xu ◽  
Wu Ying Zhang
Keyword(s):  
Fourier Transform ◽  
Double Bond ◽  
Fourier Transform Infrared ◽  
Synthesis Process ◽  
Titration Method ◽  
Uv Curable ◽  
Oh Groups ◽  
Acrylic Ester ◽  
Modified Epoxy ◽  
Epoxy Groups

Polyurethane-modified epoxy monoacrylates (PMEMA) containing two different UV- curable groups (double bond and epoxy groups) were synthesized. The changes of NCO groups during the synthesis process of PMEMA were measured by chemical titration method, and its Fourier Transform Infrared (FTIR) spectra were investigated. The results indicated that polyurethane chain segments can be grafted onto the epoxy monacrylates (EMA) by the reaction of NCO and OH groups. The FTIR of PMEMA showed that it contains both double bond of acrylic ester (UV radical curable) and epoxy groups (UV cationic curable).

Synthesis and Characterization of a New Kind of UV-Curable Cyclohexanone-Formaldehyde Resins

2012 ◽  
Vol 602-604 ◽  
pp. 660-663 ◽  
Author(s):  
Guang Yang ◽  
Xin Rong Zeng ◽  
Yi Wang ◽  
Yi Fu Zhang
Keyword(s):  
Nuclear Magnetic Resonance ◽  
Fourier Transform ◽  
Synthesis And Characterization ◽  
Formaldehyde Resin ◽  
Isophorone Diisocyanate ◽  
Solvent Resistance ◽  
Uv Curable ◽  
H Nmr ◽  
Resistance Tests

A kind of UV-curable cyclohexanone-formaldehyde resins (UVCF) was prepared by the reaction of cyclohexanone-formaldehyde resin (CFR), isophorone diisocyanate (IPDI) and 2-hydroxyethyl acrylate (HEA). The UVCFIPID-HEA obtained was characterized by fourier transform infrared spectrum (FTIR), nuclear magnetic resonance (NMR). The FTIR and 1H-NMR results show that the terminal acrylate acyloxy was introduced into the structure of the prepolymer. The results of solvent resistance tests show that the solvent resistance property of UVCFIPID-HEA is excellent.

Synthesis and characterization of acrylic modified epoxy prepolymers for UV-curable adhesives

Rare Metals ◽  
2011 ◽  
Vol 30 (S1) ◽  
pp. 567-571 ◽  
Author(s):  
Yichi Chen ◽  
Hongmei Zhang ◽  
Liqun Zhu ◽  
Tao He ◽  
Weiping Li ◽  
...  
Keyword(s):  
Synthesis And Characterization ◽  
Uv Curable ◽  
Modified Epoxy

Synthesis and Characterization of Palm Oil Based Polyol

2013 ◽  
Vol 812 ◽  
pp. 275-280
Author(s):  
Yahaya Siti Munira ◽  
Ahmad Faiza Mohd ◽  
Mohamed Rahmah
Keyword(s):  
Nuclear Magnetic Resonance ◽  
Fourier Transform ◽  
Palm Oil ◽  
Ring Opening ◽  
Hydroxyl Group ◽  
Synthesis And Characterization ◽  
Epoxidized Palm Oil ◽  
Ring Opening Reaction ◽  
Epoxy Groups

In this study, palm oil-based polyols were prepared and characterized. In order to prepare the polyol, Epoxidized palm oil (EPO) was reacted with glycerol and undergoes ring opening reaction. The synthesized oil was characterized by oxygen oxirane content titration (OOC), hydroxyl value test (HV), fourier transform infrared (FTIR) and nuclear magnetic resonance (NMR). Based on the FTIR spectrum of polyols, the disappearance of epoxy groups at 825cm-1, 843cm-1 and the emergence of hydroxyl group at 3394cm-1 are obvious indicating that hydroxyl group of the polyols formed. In NMR, the presence of new signal at δ 3.46ppm (-CH-OH) showed the attachment of hydroxyl group onto the epoxidized palm oil.

scholarly journals Synthesis and characterization of different soybean oil-based polyols with fatty alcohol and aromatic alcohol

e-Polymers ◽  
2021 ◽  
Vol 21 (1) ◽  
pp. 491-499
Author(s):  
Fukai Yang ◽  
Hao Yu ◽  
Yuyuan Deng ◽  
Xinyu Xu
Keyword(s):  
Molecular Weight ◽  
Soybean Oil ◽  
Retention Time ◽  
Ring Opening ◽  
Isoamyl Alcohol ◽  
Synthesis And Characterization ◽  
Intermolecular Force ◽  
H Nmr ◽  
Epoxy Groups

Abstract In this article, five kinds of soybean oil-based polyols (polyol-E, polyol-P, polyol-I, polyol-B, and polyol-M) were prepared by ring-opening the epoxy groups in epoxidized soybean oil (ESO) with ethyl alcohol, 1-pentanol, isoamyl alcohol, p-tert-butylphenol, and 4-methoxyphenol in the presence of tetrafluoroboric acid as the catalyst. The SOPs were characterized by FTIR, 1H NMR, GPC, viscosity, and hydroxyl numbers. Compared with ESO, the retention time of SOPs is shortened, indicating that the molecular weight of SOPs is increased. The structure of different monomers can significantly affect the hydroxyl numbers of SOPs. Due to the large steric hindrance of isoamyl alcohol, p-hydroxyanisole, and p-tert-butylphenol, SOPs prepared by these three monomers often undergo further dehydration to ether reactions, which consumes the hydroxyl of polyols, thus forming dimers and multimers; therefore, the hydroxyl numbers are much lower than polyol-E and polyol-P. The viscosity of polyol-E and polyol-P is much lower than that of polyol-I, polyol-B, and polyol-M. A longer distance between the molecules and the smaller intermolecular force makes the SOPs dehydrate to ether again. This generates dimer or polymers and makes the viscosity of these SOPs larger, and the molecular weight greatly increases.

Synthesis and Characterization of Y2O3 Nanoflowers

2012 ◽  
Vol 465 ◽  
pp. 76-79 ◽  
Author(s):  
Shuang Zhan ◽  
Xia Li
Keyword(s):  
Fourier Transform ◽  
Phase Composition ◽  
Electron Microscope ◽  
Synthesis And Characterization ◽  
The Novel ◽  
X Ray Diffraction ◽  
Facile Hydrothermal Method ◽  
X Ray ◽  
Scanning Electron

The novel Y2O3 nanoflowers were synthesized through a facile hydrothermal method without using any catalyst or template. The phase composition and the microstructure of as-prepared products were characterized by field emission scanning electron microscope (FE-SEM), X-ray diffraction (XRD) as well as Fourier transform infrared spectrum. The formation mechanism for the Y2O3 flowers has been proposed.

scholarly journals Synthesis and Characterization of Nanostructured Blends of Epoxy Resin and Block Copolymers

2013 ◽  
Vol 13 (1) ◽  
pp. 81-88 ◽  
Author(s):  
Rajesh Pandit ◽  
Albrecht Berkessel ◽  
Ralf Lach ◽  
Wolfgang Grellmann ◽  
Rameshwar Adhikari
Keyword(s):  
Fourier Transform ◽  
Block Copolymer ◽  
Block Copolymers ◽  
Bisphenol A ◽  
Epoxy Resin ◽  
Layered Silicate ◽  
Diglycidyl Ether ◽  
Synthesis And Characterization ◽  
Microindentation Technique

Polystyrene–polybutadiene block copolymers having different molecular architectures were epoxidized by using meta-chloroperoxybenzoic acid (MCPBA). Then, the blends with epoxy resin (diglycidyl ether of bisphenol-A; DGEBA) and their nanocomposites with boehmite and layered silicate nanofiller in presence of methylene dianiline (MDA) as a hardener were prepared. The epoxidized copolymers and the composites were characterized by Fourier transform infrared (FTIR) spectroscopy and microindentation technique. In this way, it was possible to tune the morphology of the nanostructured blends of the epoxy resin using the functionalized block copolymer as the template. The presence of nanostructured morphology was attested by the optical transparency of the blends as well as of the composites with nanofiller. The microhardness properties were improved by the incorporation of the nanoparticles, viz. boehmite and layered silicate. Nepal Journal of Science and Technology Vol. 13, No. 1 (2012) 81-88 DOI: http://dx.doi.org/10.3126/njst.v13i1.7445

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