Anhydrous proton-conducting electrolyte based on a nematic poly(methyl acrylate) containing sulfonated side chains

2014 ◽  
Vol 131 (12) ◽  
pp. n/a-n/a ◽  
Author(s):  
Ting Liang ◽  
Yong Wu ◽  
Shuai Tan ◽  
Caihong Wang
Keyword(s):  
Methyl Acrylate ◽  
Side Chains ◽  
Proton Conducting

State of the art and prospects in the development of proton‐conducting perfluorinated membranes with short side chains: A review

2020 ◽  
Author(s):  
Oleg N. Primachenko ◽  
Elena A. Marinenko ◽  
Alexey S. Odinokov ◽  
Svetlana V. Kononova ◽  
Yuri V. Kulvelis ◽  
...  
Keyword(s):  
State Of The Art ◽  
Side Chains ◽  
Short Side ◽  
Proton Conducting ◽  
Perfluorinated Membranes

Spinning of Fibers from Graft Copolymers of Polyacrylonitrile and Poly(Methyl Acrylate)

1976 ◽  
Vol 46 (2) ◽  
pp. 77-81 ◽  
Author(s):  
Samy Abdel Monem El-Garf
Keyword(s):  
Graft Copolymer ◽  
Methyl Acrylate ◽  
Graft Copolymers ◽  
Coagulation Bath ◽  
Side Chains ◽  
Initial Value

Fibers were spun from graft copolymers of polyacrylonitrile and poly(methyl acrylate). Increasing poly(methyl acrylate) side chains from 5 to 8% decreased the viscosity of the spinning solution in dimethylformamide. The spinning solutions were unstable. When the graft copolymer contained 5% side chains, the viscosity of these solutions returned to almost its initial value by heating. Fibers were obtained from graft copolymers containing from 5–13% poly(methyl acrylate) side chains. These were formed at the temperature of the coagulation bath (50°C), while at temperatures less than 50°C the fibers were not obtained. Weak fibers were produced from a graft copolymer containing 13% side chains at the temperatures of the coagulation bath (20 and 50°C). No fibers were obtained from graft copolymer containing 25% side chains. The method of dissolution of the graft copolymers does affect the drawing of fibers produced from them. It was observed that the heating of the spinning solution decreases the amount of drawing of the produced fibers. The presence of the flexible side chains of poly(methyl acrylate) in the graft copolymer improves the maximum possible degree of drawing of the fibers relative to that of fibers from the initial linear copolymer and homopolyacrylonitrile.

The Effect of a Method of Dissolution of Graft Copolymer of Polyacrylonitrile and Poly(Methyl Acrylate) on Drawability and Properties of Spun Fibers

1976 ◽  
Vol 46 (10) ◽  
pp. 767-770
Author(s):  
Samy Abdel Monem El-Garf
Keyword(s):  
Graft Copolymer ◽  
Methyl Acrylate ◽  
Modulus Of Elasticity ◽  
Abrasion Resistance ◽  
Side Chains ◽  
Yarn Strength ◽  
Dissolution Temperature ◽  
Initial Modulus ◽  
Spun Fibers

It was found that dissolution of the graft copolymer has an effect on drawability and other properties of fibers spun from this graft copolymer. The resistance to double bending and abrasion resistance are considerably decreased with the increase of the dissolution temperature. The breaking properties were not greatly changed. The maximum loop and knotted yarn strength was reached when the polymer was dissolved by heating. These values are 100% and 99% of the original, respectively—higher than those obtained from PAN and PANM. The presence of 5% PMA in the side chains of the graft copolymer increased the flexibility of these chains. This is evident from the decrease of the initial modulus of elasticity from the values obtained for PANM and PAN.

Proton conducting graft copolymers with tunable length and density of phosphonated side chains for fuel cell membranes

2014 ◽  
Vol 450 ◽  
pp. 362-368 ◽  
Author(s):  
Ivaylo Dimitrov ◽  
Shogo Takamuku ◽  
Katja Jankova ◽  
Patric Jannasch ◽  
Søren Hvilsted
Keyword(s):  
Fuel Cell ◽  
Cell Membranes ◽  
Graft Copolymers ◽  
Side Chains ◽  
Fuel Cell Membranes ◽  
Proton Conducting

Synthesis of partially biobased polymer-bearing reactive epoxy groups in the side chains by radical copolymerization of limonene oxide with methyl acrylate

2012 ◽  
Vol 70 (4) ◽  
pp. 1113-1123 ◽  
Author(s):  
Hisatoyo Morinaga ◽  
Yoshihide Kiyokawa ◽  
Mei Kataoka ◽  
Junya Masuda ◽  
Daisuke Nagai
Keyword(s):  
Methyl Acrylate ◽  
Radical Copolymerization ◽  
Side Chains ◽  
Limonene Oxide ◽  
Polymer Bearing ◽  
Epoxy Groups

Proton Conducting Polysulfone Ionomers Carrying Sulfoaryloxybenzoyl Side Chains

2005 ◽  
Vol 26 (18) ◽  
pp. 1464-1468 ◽  
Author(s):  
Benoît Lafitte ◽  
Mario Puchner ◽  
Patric Jannasch
Keyword(s):  
Side Chains ◽  
Proton Conducting
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