scholarly journals Ionogels Obtained by Thiol-Ene Photopolymerization—Physicochemical Characterization and Application in Electrochemical Capacitors

Molecules ◽  
2021 ◽  
Vol 26 (3) ◽  
pp. 758
Author(s):  
Agnieszka Marcinkowska ◽  
Piotr Gajewski ◽  
Katarzyna Szcześniak ◽  
Mariola Sadej ◽  
Aneta Lewandowska
Keyword(s):  
Mechanical Properties ◽  
Ionic Liquids ◽  
Electrochemical Properties ◽  
Intermolecular Interactions ◽  
Polymer Matrix ◽  
Electrochemical Capacitors ◽  
Physicochemical Characterization ◽  
Imidazolium Ionic Liquids ◽  
Sem Micrograph

Flexible ionogels with good mechanical properties were obtained in situ by thiol-ene photopolymerization of trimethylolpropane tris(3-mercaptopropionate) (TMPTP) and 1,3,5-triallyl-1,3,5-triazine-2,4,6(1H,3H,5H)-trione (TATT) (with C=C: SH ratio 1:1) in four imidazolium ionic liquids (1-ethyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide—EMImNTf2, 1-ethyl-3-methylimidazolium trifluoromethanesulfonate-EMImOTf, 1-butyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide-BMImNTf2, and 1-butyl-3-methylimidazolium trifluoromethanesulfonate—BMImOTf) used in the range 50 to 70 wt.%. The mechanical and electrochemical properties of obtained ionogels were examined. Ionogels with ionic liquids (ILs) with NTf2− anion are more puncture resistant than with OTf− anion. Moreover, ionogels with the NTF2− anion have better electrochemical properties than those with the OTf− anion. Although it should be noted that ionogels with the EMIm+ cation have a higher conductivity than the BMIm+. This is connected with intermolecular interactions between polymer matrix and IL related to the polarity of IL described by the Kamlet-Taft parameters. These parameters influence the morphology of the polymer matrix (as shown by the SEM micrograph), which is formed by interconnected polymer spheres.

Synthesis and Characterizations of Poly(Butylene Succinate) Copolyester

2014 ◽  
Vol 1015 ◽  
pp. 381-384
Author(s):  
Li Liu ◽  
Li Hai Cai ◽  
Dan Liu ◽  
Jun Xu ◽  
Bao Hua Guo
Keyword(s):  
Mechanical Properties ◽  
Polymer Matrix ◽  
Crystallization Temperature ◽  
In Situ Polymerization ◽  
Nucleating Agent ◽  
Single Fiber ◽  
Butylene Succinate ◽  
Crystallization Behaviors ◽  
Polymerization Method

The poly (butylene succinate) (PBS) and 3 wt% attapulgite (ATP) reinforced PBS/ATP nanocomposites with 1,6-hexanediol were fabricated using an in situ polymerization method. The crystallization behaviors indicated that ATP had effectively acted as nucleating agent, resulting in the enhancement on the crystallization temperature. The SEM results showed a superior interfacial linkage between ATP and PBS. Also, ATP could disperse as a single fiber and embed in the polymer matrix, which resulted in the improved mechanical properties.

Development of Some Promising Approaches for The Toughening of High-Temperature Polymers

1998 ◽  
Vol 519 ◽  
Author(s):  
C. Kumudinie ◽  
J. K. Premachandra ◽  
J. E. Mark ◽  
T. D. Dang ◽  
M. R. Unroe ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Optical Properties ◽  
Thermal Properties ◽  
High Temperature ◽  
Polymer Matrix ◽  
Hybrid Material ◽  
Arylene Ether ◽  
Rubbery Phase ◽  
Maximum Extensibility

AbstractHigh-temperature poly(arylene ether) and hydroxypolybenzoxazole polymers were toughened using dispersed rubbery phases. This rubbery phase was a hybrid material which was in-situ generated within the polymer matrix using mixtures of partially-hydrolyzable trialkoxy and dialkoxy organosilanes with a fully hydrolyzable tetraalkoxysilane. The resulting materials were characterized with regard to their structures, mechanical properties (modulus, ultimate strength, maximum extensibility, and toughness), thermal properties, optical properties, and tendencies to absorb water. Some of the results are presented here.

The Effect of Sizing Additives for Carbon Fiber on the Mechanical Properties of Polyetherimide Composites

2020 ◽  
Vol 869 ◽  
pp. 488-493
Author(s):  
Aues A. Beev ◽  
Svetlana Yu. Khashirova ◽  
Azamat L. Slonov ◽  
Ismel V. Musov ◽  
Azamat Zhansitov ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Carbon Fiber ◽  
Intermolecular Interactions ◽  
Carbon Fibers ◽  
Polymer Matrix ◽  
Physical And Mechanical Properties ◽  
Sizing Agents ◽  
Filled Composite

The article presents the results of sizing of discrete carbon fibers with various substances and their effect on the properties of polyetherimide composites. As sizing agents, 1,3-diaminobenzene, 4,4'-dihydroxy-2,2-diphenylpropane, polyetherimide and oligoetherether sulfone were used. The study of physical and mechanical properties showed that all the substances used increase the properties of the carbon-filled composite based on polyetherimide. The highest mechanical properties are demonstrated by a composite containing carbon fibers treated with 1,3-diaminobenzene, which indicates improved compatibility of the filler and the polymer matrix and enhanced intermolecular interactions.

Organized 3D-alkyl imidazolium ionic liquids could be used to control the size of in situ generated ruthenium nanoparticles?

2009 ◽  
Vol 19 (22) ◽  
pp. 3624 ◽  
Author(s):  
Thibaut Gutel ◽  
Catherine C. Santini ◽  
Karine Philippot ◽  
Agilio Padua ◽  
Katrin Pelzer ◽  
...  
Keyword(s):  
Ionic Liquids ◽  
Ruthenium Nanoparticles ◽  
Imidazolium Ionic Liquids

Electrochemical properties of poly(3,4-ethylenedioxythiophene) grown on Pt(111) in imidazolium ionic liquids

RSC Advances ◽  
2014 ◽  
Vol 4 (7) ◽  
pp. 3383-3391 ◽  
Author(s):  
Andrea P. Sandoval ◽  
Juan M. Feliu ◽  
Roberto M. Torresi ◽  
Marco F. Suárez-Herrera
Keyword(s):  
Ionic Liquids ◽  
Electrochemical Properties ◽  
Imidazolium Ionic Liquids

Influence of amines on the size control of in situ synthesized ruthenium nanoparticles in imidazolium ionic liquids

2011 ◽  
Vol 40 (17) ◽  
pp. 4660 ◽  
Author(s):  
Gorka Salas ◽  
Catherine C. Santini ◽  
Karine Philippot ◽  
Vincent Collière ◽  
Bruno Chaudret ◽  
...  
Keyword(s):  
Ionic Liquids ◽  
Size Control ◽  
Ruthenium Nanoparticles ◽  
Imidazolium Ionic Liquids

scholarly journals Preparation and Physicochemical Characterization of a Diclofenac Sodium-Dual Layer Polyvinyl Alcohol Patch

Polymers ◽  
2021 ◽  
Vol 13 (15) ◽  
pp. 2459
Author(s):  
Shafizah Sa’adon ◽  
Mohamed Nainar Mohamed Ansari ◽  
Saiful Izwan Abd Razak ◽  
Joseph Sahaya Anand ◽  
Nadirul Hasraf Mat Nayan ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Diclofenac Sodium ◽  
Physicochemical Characterization ◽  
Xrd Analysis ◽  
Tensile Tests ◽  
Spectroscopic Techniques ◽  
X Ray Diffraction ◽  
Water Contact ◽  
Freeze Thaw

The aim of this study is to prepare a dual layer polyvinyl (PVA) patch using a combination of electrospinning techniques and cryogelation (freeze-thaw process) then subsequently to investigate the effect of freeze-thaw cycles, nanofiber thickness, and diclofenac sodium (DS) loading on the physicochemical and mechanical properties and formulation of dual layer PVA patches composed of electrospun PVA nanofibers and PVA cryogel. After the successful preparation of the dual layer PVA patch, the prepared patch was subjected to investigation to assess the effect of freeze-thaw cycles, nanofiber thickness and percentages of DS loading on the morphology, physiochemical and mechanical properties. Various spectroscopic techniques such as scanning electron microscopy (SEM), X-ray diffraction (XRD), Fourier transform infrared (FTIR), water contact angle, and tensile tests were used to evaluate the physicochemical and mechanical properties of prepared dual layer PVA patches. The morphological structures of the dual layer PVA patch demonstrated the effectiveness of both techniques. The effect of freeze-thaw cycles, nanofiber thickness, and DS percentage loading on the crystallinity of a dual layer PVA patch was investigated using XRD analysis. The presence of a distinct DS peak in the FTIR spectrum indicates the compatibility of DS in a dual layer PVA patch through in-situ loading. All prepared patches were considered highly hydrophilic because the data obtained was less than 90°. The increasing saturation of DS within the PVA matrix increases the tensile strength of prepared patches, however decreased its elasticity. Evidently, the increasing of electrospun PVA nanofibers thickness, freeze-thaw cycles, and the DS saturation has improved the physicochemical and mechanical properties of the DS medicated dual layer PVA patches, making them a promising biomaterial for transdermal drug delivery applications.

Synthesis and application of functionalized ionic liquids as solvent to corn stalk for phenolic resin modification

e-Polymers ◽  
2015 ◽  
Vol 15 (3) ◽  
pp. 195-201 ◽  
Author(s):  
Liying Guo ◽  
Bin Zhang ◽  
Shiyang Bai ◽  
Xiuyun Ma ◽  
Zhiming Wang
Keyword(s):  
Mechanical Properties ◽  
Ionic Liquids ◽  
Phenolic Resin ◽  
Corn Stalk ◽  
X Ray Diffraction ◽  
Scanning Calorimetry ◽  
X Ray ◽  
H Nmr ◽  
Good Solubility

AbstractThree functionalized ionic liquids (ILs) of [HeMIM]Cl, [CeMIM]Cl, and [AeMIM]Br that can dissolve corn stalk were synthesized and characterized via Fourier transform infrared spectroscopy (FTIR) and 1H NMR. The dissolved corn stalk was in situ blended with phenol and formaldehyde to produce modified phenolic resin composites. The resulting composites were characterized via FTIR, differential scanning calorimetry, and X-ray diffraction analysis, and tested for their mechanical properties. In addition, the effects of ILs on the dissolution rate of corn stalks and on the mechanical properties of the modified phenolic resin were investigated as well. The results showed that the synthesized ILs presented good solubility toward corn stalk at the optimum temperature of 90°C. After modification with corn stalk dissolved in ILs, the mechanical properties of phenolic resin were significantly improved. At the same conditions, the phenolic resin modified with [AeMIM]Br presented the lowest concentration of free formaldehyde and the best mechanical properties, in which the tensile strength and impact strength were improved from 3.28 MPa and 0.93 kJ/m2 to 9.36 MPa and 5.74 kJ/m2, respectively, but the hardness only changed slightly.

The electrochemical properties of a platinum electrode in functionalized room temperature imidazolium ionic liquids

2007 ◽  
Vol 11 (11) ◽  
pp. 1481-1487 ◽  
Author(s):  
Ricardo K. Donato ◽  
Marcelo V. Migliorini ◽  
Moisés A. Benvegnú ◽  
Jairton Dupont ◽  
Reinaldo S. Gonçalves ◽  
...  
Keyword(s):  
Ionic Liquids ◽  
Electrochemical Properties ◽  
Room Temperature ◽  
Platinum Electrode ◽  
Imidazolium Ionic Liquids

scholarly journals Blending of Cellulose and Chitosan in Alkyl Imidazolium Ionic Liquids

2012 ◽  
Vol 2012 ◽  
pp. 1-9 ◽  
Author(s):  
Olga Kuzmina ◽  
Thomas Heinze ◽  
Dariusz Wawro
Keyword(s):  
Mechanical Properties ◽  
Ionic Liquids ◽  
Ethyl Acetate ◽  
Cellulose Film ◽  
Imidazolium Ionic Liquids ◽  
Pure Cellulose ◽  
Polymer Aggregates ◽  
Chitosan Films ◽  
Chitosan Blends ◽  
Blended Film

The production of cellulose/chitosan blends in alkyl imidazolium ionic liquids (ILs) was studied in this work. Selected organic solvents, such as dimethyl sulfoxide, ethyl acetate, and diethyl ether, were used as cosolvents. The addition of cosolvents decreased the viscosity of cellulose/chitosan solutions in ILs and facilitated the dissolution of polysaccharides, thereby decreasing the and polymer aggregates sizes in the solutions. The cellulose/chitosan films were produced from the studied solutions. The presence of one of cosolvent and ILs in the blended films was confirmed by FTIR spectroscopy. The blended film is stronger than pure cellulose film, and the addition of cosolvents has an influence on its mechanical properties.

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