Synthesis and characterization of epoxy functionalized cooligomers based on chlorotrifluoroethylene and allyl glycidyl ether

2010 ◽  
Vol 48 (16) ◽  
pp. 3587-3595 ◽  
Author(s):  
K. S. Santhosh Kumar ◽  
Bruno Ameduri
Keyword(s):  
Glycidyl Ether ◽  
Synthesis And Characterization ◽  
Allyl Glycidyl Ether

Hydrogels with multiple clickable anchor points: synthesis and characterization of poly(furfuryl glycidyl ether)-block-poly(ethylene glycol) macromonomers

2019 ◽  
Vol 10 (32) ◽  
pp. 4485-4494 ◽  
Author(s):  
Karishma K. Adatia ◽  
Silke Keller ◽  
Tobias Götz ◽  
Günter E. M. Tovar ◽  
Alexander Southan
Keyword(s):  
Ethylene Glycol ◽  
Glycidyl Ether ◽  
Diels Alder ◽  
Synthesis And Characterization ◽  
Poly Ethylene Glycol ◽  
Polyacrylamide Hydrogels ◽  
Anchor Points ◽  
Poly Ethylene

Functional polyacrylamide hydrogels containing multiple furfuryl anchor points for Diels–Alder reactions were prepared employing new macromonomers.

scholarly journals Application of cesium hydroxide monohydrate for ring opening polymerization of monosubstituted oxiranes: characterization of synthesized polyether-diols

2020 ◽  
Author(s):  
Zbigniew Grobelny ◽  
Justyna Jurek-Suliga ◽  
Sylwia Golba
Keyword(s):  
Styrene Oxide ◽  
Glycidyl Ether ◽  
Complexing Agents ◽  
Glycidyl Ethers ◽  
Cesium Hydroxide ◽  
Allyl Glycidyl Ether ◽  
Main Fraction ◽  
Tetrahydrofuran Solution ◽  
Hydroxide Monohydrate

AbstractCesium hydroxide monohydrate (CsOH·H2O) activated by cation complexing agents, i.e., 18C6 or C222 was applied as initiator of monosubstituted oxiranes polymerization. Propylene oxide (PO), 1,2-butylene oxide (BO), styrene oxide (SO) and some glycidyl ethers were used as monomers. All processes were carried out in tetrahydrofuran solution at room temperature. Such polymers, as PPO-diols, PBO-diols and PSO-diols, are unimodal and have molar masses Mn = 2000–5100. Their dispersities are rather high (Mw/Mn = 1.17–1.33). Moreover, PPO-diols and PSO-diols are not contaminated by monools with unsaturated starting groups. Poly(glycidyl ether)s are, in general, polymodal. For example, poly(isopropyl glycidyl ether)-diols are bi- or trimodal, whereas poly(allyl glycidyl ether)-diols possess two or even six fractions. Molar masses of main fraction are 4200–6400, and the second fraction is much lower, namely 600–2600. Dispersities of some fractions are very low (Mw/Mn = 1.01–1.07). Polymodality of polymers obtained was discussed in terms of the formation of two or more species propagating with different rate constants. Graphic abstract

Synthesis and Characterization of Chitosan Based Ultraviolet Absorber with Groups of Benzophenone

2011 ◽  
Vol 295-297 ◽  
pp. 388-391
Author(s):  
Shu Juan Yu ◽  
Chun Qun Liang
Keyword(s):  
Fourier Transform ◽  
Moisture Absorption ◽  
Glycidyl Ether ◽  
Synthesis And Characterization ◽  
X Ray Diffraction ◽  
X Ray ◽  
Absorption Area ◽  
Ft Ir ◽  
Ultraviolet Absorbers

2-hydroxy-4-glycidyl ether benzophenone(HGEBP) is synthesized with 2,4-dihydoxy- benzophenone(UV-0) and epichlorohydrin(ECH) as starting material, then a series of chitosan (CS) based novel ultraviolet absorbers (CS-g-UV-0) are synthesized by the reaction of chitosan with HGEBP in isopropylcarbinol in the presence of sodium hydroxide. The products(CS-g-UV-0) are characterized by means of Fourier transform infrared spectra (FT-IR), X-ray diffraction (XRD), and UV spectrophotometer. The results of UV absorption show that anyone of the grafted products has a strong ultraviolet absorption area ranging from 280nm to 350nm and the maximum absorption peak presents at 291 nm. It is found that the grafted products could improve the moisture-absorption and moisture-retention property with the increase of G% values.

Preparation and Characterization of Temperature-Sensitive 2-Hydroxy-3-Allyloxy Propyl Starch Ether

2015 ◽  
Vol 752-753 ◽  
pp. 81-85
Author(s):  
Ben Zhi Ju ◽  
Wei Ma ◽  
Hong Liang Yuan ◽  
Shu Fen Zhang
Keyword(s):  
Aqueous Solution ◽  
Fluorescence Spectroscopy ◽  
Self Assembly ◽  
Glycidyl Ether ◽  
Degree Of Substitution ◽  
Temperature Sensitive ◽  
H Nmr ◽  
Hydrophilic Lipophilic Balance ◽  
Allyl Glycidyl Ether

A temperature-sensitive 2-hydroxy-3-allyloxy-propyl starch ehter (HAPS) was prepared by regulating the hydrophilic-lipophilic balance of etherified starch. Allyl glycidyl ether (AGE) was used as the hydrophobic reagent. 1H-NMR was used to characterize the structure of products and determine the degree of substitution of etherified starch. UV-Vis and fluorescence spectroscopy methods were adopted to investigate the properties of HAPS aqueous solution. The results showed that the LCST of HAPS was reduced as the DS. When the cmc of HAPS decreases and DS increases, formation of micelles in an aqueous solution by self-assembly is possible.

New amphiphilic copolymers derived from hydrophobically modified vinyl saccharides

1995 ◽  
Vol 73 (11) ◽  
pp. 1941-1947 ◽  
Author(s):  
Joachim Klein ◽  
Markwart Kunz ◽  
Lutz Guderjahn
Keyword(s):  
Aqueous Solution ◽  
Surface Tension ◽  
Glycidyl Ether ◽  
Vinyl Pyrrolidone ◽  
Hydrophobic Association ◽  
Amphiphilic Copolymers ◽  
Molecular Weights ◽  
Hydrophobically Modified ◽  
Allyl Glycidyl Ether

The synthesis and characterization of new amphiphilic copolymers derived from copolymerization of hydrophobically modified so-called vinyl saccharides with 1-vinyl-2-pyrrolidone are described. The vinyl saccharides were prepared in a two-step synthesis. In the first step hydrophobically modified saccharide derivatives were synthesized without protecting procedures by direct reductive amination of the reducing keto-disaccharide isomaltulose (Palatinose®) with n-dodecylamine. In the second step the resulting N-dodecylaminopolyols were coupled with allyl glycidyl ether to give polymerizable amphiphilic vinyl saccharides. The copolymerizations with 1-vinyl-2-pyrrolidone were performed as free radical aqueous solution polymerizations. The characterization of the copolymers was carried out by measuring the viscosity and light scattering in water as well as in trichloromethane, in addition to surface tension measurements and solubilization studies. The solution properties of the copolymers in water and trichloromethane differ remarkably. While the values for the intrinsic viscosities in both solvents are comparable, the weight-average molecular weights in water are much higher than those in trichloromethane, indicating the formation of aggregates in aqueous solution. The vinyl pyrrolidone copolymers are also very surface active, lowering the surface tension of water to as low as 30 mN/m. The combination of measurements of surface tensions and solubilization studies indicates that their hydrophobic association behaviour is formally comparable to those of low molecular weight surfactants. Keywords: vinyl saccharides, isomaltulose, hydrophobic association, amphiphilic polymers.

Synthesis and characterization of poly(ferrocenyl glycidyl ether)-1,2-butylene oxide copolymers

2014 ◽  
Vol 22 (8) ◽  
pp. 826-831 ◽  
Author(s):  
Bong-Sang Cho ◽  
Jeong-Su Kim ◽  
Jae-Myung Lee ◽  
Jeong-Ohk Kweon ◽  
Si-Tae Noh
Keyword(s):  
Glycidyl Ether ◽  
Synthesis And Characterization

Synthesis and Characterization of the Three Dicyclopentapyrenes

1996 ◽  
Vol 61 (10) ◽  
pp. 3572-3572
Author(s):  
Lawrence T. Scott ◽  
Atena Necula
Keyword(s):  
Synthesis And Characterization
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