scholarly journals Preparation of Ionic Conductivity Polymer Electrolyte Film Based on Epoxidized Deproteinized Natural Rubber

Ionic conductivity polymer electrolyte film based on epoxidized deproteinized natural rubber (EDPNR) and lithium salt lithium triflate (LiCF3SO3) were prepared by solution casting technique. The EDPNR was prepared from deproteinized natural rubber latex (DNR) epoxidized in the latex stage with fresh peracetic acid 33%, which was deproteinized by incubation of the latex with 0,1 wt% urea and 1 wt% surfactant. The ionic conductivity of EDPNR mixed with lithium salt was investigated through impedance analysis. The results show that the conductivity of EDPNR/ LiCF3SO3 mixture was dependent on LiCF3SO3 salt concentration and amount of epoxy group. The highest ionic conductivity at room temperature obtained is 1,71 x 10-5 S.cm-1 at 35 wt% LiCF3SO3 and 45 mol% epoxy groups. Fourier transform infrared spectroscopy (FTIR) spectra showed evidence of complexation between EDPNR and LiCF3SO3. Glass transition temperature, Tg displayed an increasing trend in which are the increase in salt concentration and the increase in epoxy group concentration.

2006 ◽  
Vol 177 (37-38) ◽  
pp. 3251-3257 ◽  
Author(s):  
W KLINKLAI ◽  
S KAWAHARA ◽  
E MARWANTA ◽  
T MIZUMO ◽  
Y ISONO ◽  
...  

Author(s):  
Trịnh Thị Hang ◽  
I Putu Mahendra ◽  
Tran Manh Thang ◽  
Seiichi Kawahara ◽  
Phan Trung Nghia

The temperature glass behavior of epoxy deproteinized natural rubber/polymethylmethacrylate/lithium trifluoromethanesulfonate (EDPNR/PMMA/LiCF3SO3) and the conductivity behavior of EDPNR in the ternary blends were studied by DSC and multichannel potentiostat. The DSC result revealed the temperature glass of the EDPNR was shifted to the right with the increase of lithium salt amount in these binary blends composition. However, in the ternary blends of EDPNR/PMMA/LiCF3SO3 the temperature glass revealed the miscibility of these ternary blends. Two different temperature glass values were obtained when the ratio of EDPNR in EDPNR/PMMA was less than 80 wt.%. The ionic conductivity of EDPNR could be improved by increasing the amount of lithium salt up to 35 wt.%, after this amount the ionic conductivity of EDPNR was significantly decreased. While in the ternary blends, the highest ionic conductivity value was found at the ratio 80/20 of EDPNR/PMMA. Furthermore, the factors influencing the temperature glass and conductivity behavior of EDPNR were systematically studied in this work. The results demonstrated an intimate correlation between temperature glass and conductivity behavior of EDPNR.


2004 ◽  
pp. 1081-1088
Author(s):  
W. KLINKLAI ◽  
S. KAWAHARA ◽  
Y. ISONO ◽  
T. MIZUMO ◽  
M. YOSHIZAWA ◽  
...  

2018 ◽  
Author(s):  
H. Devendrappa ◽  
L. Yesappa ◽  
M. Niranjana ◽  
S. P. Ashokkumar ◽  
H. Vijeth ◽  
...  

2018 ◽  
Vol 4 (1) ◽  
pp. 13
Author(s):  
Akhiruddin Maddu ◽  
Muhamar Kadapi ◽  
Irmansyah Sofian

Polymer electrolyte films were fabricated utilizing chitosan biopolymer plasticized with polyethylene glycol (PEG) and KCl addition as ionic transport source. The precursor solution was prepared by mixing the chitosan in acetic acid solution and PEG that act as a plasticizer. Into the mixed solution was added KCl salt for as alkalin ion transport source in the polymer electrolyte. The polymer electrolyte films were fabricated by the casting method onto the petri glass. The influence of KCl content on ionic conductivity of the composite polymer electrolyte film was studied. The ionic conductivity of the composite polymer electrolyte film was characterized using LCR meter at a frequency of 1 kHz. The best ionic conductivity was found for the film containing 45 wt% of KCl salt. The activation energy was determined by using Arrhenius plot based on conductivity data at varied temperature. It has been found that the activation energy of the composite polymer electrolyte films varied to the KCL content in the composite polymer electrolyte films. The highest activation energy was found for the polymer electrolyte film with 45 wt% of KCl content.


2003 ◽  
Vol 39 (8) ◽  
pp. 1707-1712 ◽  
Author(s):  
Warunee Klinklai ◽  
Seiichi Kawahara ◽  
Tomonobu Mizumo ◽  
Masahiro Yoshizawa ◽  
Jitladda Tangpakdee Sakdapipanich ◽  
...  

2018 ◽  
Vol 42 (17) ◽  
pp. 14179-14187
Author(s):  
Janisha Jayadevan ◽  
G. Unnikrishnan

Novel blend membranes from physico-chemically modified deproteinized natural rubber latex for drug release applications.


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