FTIR and thermal studies of modified natural rubber based polymer electrolytes

Ionics ◽  
2005 ◽  
Vol 11 (5-6) ◽  
pp. 472-476 ◽  
Author(s):  
K. Kumutha ◽  
Y. Alias ◽  
R. Said
Keyword(s):  
Natural Rubber ◽  
Polymer Electrolytes ◽  
Thermal Studies

Calophyllum Inophyllum Oil as Plasticizer in Natural Rubber Compounds

2009 ◽  
Vol 25 (2) ◽  
pp. 113-128 ◽  
Author(s):  
P. Raju ◽  
V. Nandanan ◽  
Sunil K.N. Kutty
Keyword(s):  
Mechanical Properties ◽  
Natural Rubber ◽  
Thermal Studies ◽  
Calophyllum Inophyllum ◽  
Compression Set ◽  
Peak Rate ◽  
Rubber Compounds ◽  
Cure Time ◽  
Calophyllum Inophyllum Oil ◽  
Control Compound

Mechanical properties and the thermal degradation characteristics of natural rubber compounds with calophyllum inophyllum oil were compared to that of the control compound containing naphthenic oil. The compounds containing calophyllum inophyllum oil showed improved tensile strength, tear strength, modulus, compression set, abrasion resistance and resilience. Cure time was higher than the naphthenic oil mixes. Thermal studies showed an increase of 8 °C in the temperature of initiation of degradation and an increase of 6 °C in temperature at which the peak rate of degradation occurred. The peak rate of degradation was comparable to the control mix containing naphthenic oil.

Effect of Phenylene Diamine Antioxidant on Physico-Chemical Properties of Methyl Grafted Natural Rubber Polymer Electrolytes

2017 ◽  
Vol 864 ◽  
pp. 48-53
Author(s):  
Ahmad Fairoz Aziz ◽  
Khuzaimah Nazir ◽  
S.F. Ayub ◽  
N.I. Adam ◽  
Muhd Zu Azhan Yahya ◽  
...  
Keyword(s):  
Thermal Stability ◽  
Natural Rubber ◽  
Polymer Electrolytes ◽  
Chemical Properties ◽  
Physico Chemical ◽  
Solution Cast ◽  
Deconvolution Techniques ◽  
Tga And Dsc ◽  
Thermal Stability Of ◽  
Aging Factor

0.5 wt.% of N-(1,3-dimethylbutyl)-N’-phenyl-p-phenylenediamine (6PPD) was introduced into polymer electrolytes based on 30% poly(methyl-methacrylate) grafted natural rubber (MG30) in order to reduce the aging factor of MG30. The polymer electrolyte without 6PPD was used as control. All samples were prepared by using solution cast techniques. The effect of 6PPD in the electrolytes was analysed by using TGA, DSC and FTIR. TGA and DSC results revealed the thermal stability of MG30 electrolytes with 6PPD have higher thermal stability but lower glass transition temperature value. FTIR studies confirmed the existence of LiTF in the sample and prove the occurrence of polymer-salt complexation. Deconvolution techniques analysis on FTIR spectra shows the electrolyte sample with 6PPD display more ion dissociation which reflects to higher ionic conductivity.

Thermal Degradation Study of Lithium and Potassium Iodide/Epoxidized Natural Rubber Polymer Electrolytes

2013 ◽  
Vol 652-654 ◽  
pp. 757-764
Author(s):  
Tan Wei Leng ◽  
Yuan Xiang Yeoh ◽  
Mohamad Abu Bakar
Keyword(s):  
Thermal Degradation ◽  
Natural Rubber ◽  
Potassium Iodide ◽  
Polymer Electrolytes ◽  
Epoxidized Natural Rubber ◽  
Heating Rates ◽  
Salt Loading ◽  
Higher Ed ◽  
Degradation Activation Energy ◽  
Early Degradation

Lithium iodide/epoxidized natural rubber (LiI/ENR-50) and potassium iodide/epoxized natural rubber (KI/ENR-50) polymer electrolytes (PEs) were prepared via solvent casting. The PEs were characterized using FTIR, DSC and SEM techniques. The observed IR bands shift and the increased in Tg value in both PEs suggest that some interactions may have occurred between the ENR-50 and the respective cations. The appearance of new C=O band at ~1720 cm-1 coupled with the intensification of the OH band in KI/ENR-50 was due to the early degradation of ENR-50 promoted by KI. The kinetic analyses of the thermal degradation of neat ENR-50 and the respective PEs were studied using TG at five different heating rates. Kissinger was employed to obtain the degradation activation energy (Ed). LiI/ENR-50 shows higher Ed as compared to pristine ENR-50 and the Ed increases with increasing LiI loading. The Ed of KI/ENR-50 was observed to be higher than that of pristine ENR-50 when KI is 30 wt %. Thus, LiI retards the degradation of ENR-50 regardless of the wt % LiI added. KI, however, can either retard or catalyzed the degradation of ENR-50 depending on the salt loading.

Polymer electrolytes based on modified natural rubber for use in rechargeable lithium batteries

2001 ◽  
Vol 94 (2) ◽  
pp. 206-211 ◽  
Author(s):  
Razali Idris ◽  
M.D Glasse ◽  
R.J Latham ◽  
R.G Linford ◽  
W.S Schlindwein
Keyword(s):  
Natural Rubber ◽  
Lithium Batteries ◽  
Polymer Electrolytes ◽  
Rechargeable Lithium Batteries
Sign in / Sign up

Export Citation Format

Share Document