Equipment for modifying fibres by gas phase gamma-radiation graft polymerization

1974 ◽  
Vol 6 (2) ◽  
pp. 171-173
Author(s):  
I. Yu. Babkin ◽  
V. I. Volgin ◽  
Yu. M. Gordeev ◽  
D. N. Makhalov
Keyword(s):  
Gamma Radiation ◽  
Gas Phase ◽  
Graft Polymerization

scholarly journals OIL-RESISTANT RUBBERS PRODUCED BY GAMMA-RADIATION-INDUCED GRAFT POLYMERIZATION OF ACRYLONITRILE AND THEIR VULCANIZATION WITH FUNDAMENTAL RECIPES

1967 ◽  
Vol 40 (2) ◽  
pp. 91-99
Author(s):  
J. Tsurugi ◽  
T. Fukumoto ◽  
M. Yamagami ◽  
G. Syobayashi ◽  
S. Yabuta
Keyword(s):  
Gamma Radiation ◽  
Graft Polymerization ◽  
Radiation Induced

scholarly journals Graft-Copolymerization of Acrylate Monomers onto Chitosan Induced by Gamma Radiation: Amphiphilic Polymers and Their Behavior at The Air-Water Interface

2020 ◽  
Vol 7 (2) ◽  
pp. 209-215
Author(s):  
M. Caldera-Villalobos ◽  
B. Leal-Acevedo ◽  
V.M. Velázquez-Aguilar ◽  
M. D. P. Carreón-Castro
Keyword(s):  
Gamma Radiation ◽  
Graft Polymerization ◽  
Materials Science ◽  
Amphiphilic Polymers ◽  
Langmuir Films ◽  
Polymerization Reaction ◽  
Water Interface ◽  
Langmuir Blodgett ◽  
Air Water Interface ◽  
Langmuir Blodgett Films

Graft polymerization induced by ionizing radiation is a powerful tool in materials science to modifying the physical properties of polymers. Chitosan is a biocompatible, biodegradable, antibacterial, and highly hydrophilic polysaccharide. In this work, we report the obtaining of amphiphilic polymers through graft polymerization of acrylic monomers (methyl acrylate, t-butyl acrylate, and hexyl acrylate) onto chitosan. The polymerization reaction was carried out by simultaneous irradiation of monomers and chitosan using a gamma radiation source of 60Co. The formation of Langmuir films of amphiphilic polymers was studied at the air-water interface through surface pressure versus main molecular area isotherms (Π-A) and hysteresis cycles of compression and decompression. Finally, it was analyzed the transferring of Langmuir films towards solid substrates to obtaining Langmuir-Blodgett films with potential application as an antibacterial coating. The microstructure of the Langmuir-Blodgett films was characterized by AFM microscopy observing a regular topography with roughness ranging between 0.53 and 0.6 μm.

Graft polymerization of acrylonitrile on acetate yarn under the action of gamma radiation

1988 ◽  
Vol 20 (1) ◽  
pp. 35-37
Author(s):  
M. U. Sadykov ◽  
A. Valiev ◽  
M. I. Abdullaeva ◽  
Sh. N. Karimova ◽  
A. Abdukadyrov
Keyword(s):  
Gamma Radiation ◽  
Graft Polymerization ◽  
Acetate Yarn

scholarly journals PHYSICAL PROPERTIES OF VULCANIZATES FROM POLYMERS PRODUCED BY GAMMA-RADIATION-INDUCED GRAFT POLYMERIZATION OF ACRYLONITRILE TO NR AND SBR

1967 ◽  
Vol 40 (3) ◽  
pp. 173-182
Author(s):  
J. Tsurugi ◽  
T. Fukumoto ◽  
M. Yamagami ◽  
R. Nakao ◽  
G. Syobayashi ◽  
...  
Keyword(s):  
Gamma Radiation ◽  
Physical Properties ◽  
Graft Polymerization ◽  
Radiation Induced

Effect of temperature on "saturation currents" in gas phase radiolysis cells: the conductance of Pyrex and other cell materials

1969 ◽  
Vol 47 (2) ◽  
pp. 191-194
Author(s):  
R. M. Byrtus ◽  
G. R. Freeman
Keyword(s):  
Gamma Radiation ◽  
Gas Phase ◽  
Outer Surface ◽  
Absorbed Dose ◽  
Effect Of Temperature ◽  
Total Current ◽  
Saturation Current ◽  
Absorbed Dose Rate ◽  
Phase Saturation ◽  
Ionized Air

When gas-filled Pyrex cells were heated above about 50°, the saturation currents obtained in a gamma radiation field apparently decreased. At temperatures above 100° good saturation currents were not obtained. At temperatures below 50° the conductance of Pyrex was negligible, and "true" saturation currents were measured. At temperatures greater than 50° the Pyrex conducted appreciably, so the total current flowing in the circuit was appreciably greater than the gas phase saturation current (absorbed dose rate 1010–1013 eV/ml s). If the outer surface of the cell was grounded, for example by ionized air, part of the current by-passed the measuring ammeter, thereby decreasing the "apparent" saturation current. The magnitude of the temperature effect was greatly decreased by wrapping the cell with teflon tape, thereby insulating it from the ionized air.The effect of temperature on apparent saturation currents measured in quartz cells was much smaller than that in Pyrex cells, because the conductance of quartz was much less than that of Pyrex at temperatures above 50°.When a metal cell that contains a Pyrex insulator between the electrodes is used, the temperature of the Pyrex should be kept below about 50°.

The kinetics of radiation graft polymerization of acrylic acid from the gas phase on kaolin

1979 ◽  
Vol 21 (3) ◽  
pp. 555-563 ◽  
Author(s):  
V.A. Polushkin ◽  
A.V. Vlasov ◽  
V.V. Lapin ◽  
B.L. Tsetlin
Keyword(s):  
Acrylic Acid ◽  
Gas Phase ◽  
Graft Polymerization ◽  
Kinetics Of

scholarly journals OIL-RESISTANT RUBBERS PRODUCED BY GAMMA-RADIATION-INDUCED GRAFT POLYMERIZATION OF ACRYLONITRILE AND THEIR VULCANIZATION WITH COMMERCIAL RECIPES

1967 ◽  
Vol 40 (2) ◽  
pp. 100-102
Author(s):  
J. Tsurugi ◽  
T. Fukumoto ◽  
M. Yamagami ◽  
G. Syobayashi ◽  
S. Yabuta
Keyword(s):  
Gamma Radiation ◽  
Graft Polymerization ◽  
Radiation Induced

The kinetics of radiation graft polymerization of acrylic acid from the gas phase on polypropylene fibre

1972 ◽  
Vol 14 (4) ◽  
pp. 835-839
Author(s):  
L.I. Malakhova ◽  
A.V. Vlasov ◽  
N.V. Mikhailov ◽  
B.L. Tsetlin
Keyword(s):  
Acrylic Acid ◽  
Gas Phase ◽  
Graft Polymerization ◽  
Polypropylene Fibre ◽  
Kinetics Of
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