scholarly journals A physico-chemical assessment of the thermal stability of pneumococcal conjugate vaccine components

2014 ◽  
Vol 10 (9) ◽  
pp. 2744-2753 ◽  
Author(s):  
Fang Gao ◽  
Kay Lockyer ◽  
Karena Burkin ◽  
Dennis T Crane ◽  
Barbara Bolgiano
Keyword(s):  
Thermal Stability ◽  
Conjugate Vaccine ◽  
Pneumococcal Conjugate Vaccine ◽  
Physico Chemical ◽  
Chemical Assessment ◽  
Thermal Stability Of

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.

Preparation and Characterization of Composite of Polyamide 6/Nickel Ferrite

2012 ◽  
Vol 727-728 ◽  
pp. 609-613
Author(s):  
P.C.F. Menezes ◽  
Taciana Regina de Gouveia Silva ◽  
Ana Cristina Figueiredo de Melo Costa ◽  
Edcleide Maria Araújo
Keyword(s):  
Thermal Stability ◽  
Nickel Ferrite ◽  
Polyamide 6 ◽  
Hydraulic Press ◽  
Good Dispersion ◽  
Distributed Load ◽  
Physico Chemical ◽  
The Matrix ◽  
Thermal Stability Of

The research in composites attempt to predict the physico-chemical and mechanical a given mixture of materials. In this work, a composite was produced using as the polyamide 6 matrix and how the burden of nickel ferrite was incorporated as powders calcined at 1200°C and concentration of 50 wt.%. This mixture was compacted in a hydraulic press with heating and characterized by XRD, SEM and TG. XRD results showed the characteristic peaks of polyamide 6 and ferrite. SEM results showed a good dispersion of nickel ferrite loading in the matrix, the presence of larger clusters and evenly distributed load for the composite calcined at 1200 ° C. TG curves showed that the addition of loading of calcined nickel ferrite promoted an increase in thermal stability of the composite compared to pure polyamide.

Synthesis and Physico-Chemical Properties of Polycyanurates of 2-(N,N-Diphenylhydrazino)4,6-Dichloro-s-Triazine with Various Aromatic Diols

1993 ◽  
Vol 5 (4) ◽  
pp. 307-316 ◽  
Author(s):  
B S Bhonsale ◽  
S N Kaula ◽  
B V Patel ◽  
K C Patel
Keyword(s):  
Thermal Stability ◽  
Chlorinated Solvents ◽  
Chemical Properties ◽  
Interfacial Polycondensation ◽  
Bisphenol S ◽  
Reaction Conditions ◽  
Reduced Viscosity ◽  
Physico Chemical ◽  
Optimum Reaction ◽  
Thermal Stability Of

Various polycynaurates were synhesised by stirred interfacial polycondensation of 2-(N.N-diphenynhydrazino)-4,6-dichloro-s-triaziae (DPHDCT) with each of the aromatic diols: bisphenol-A (BPA); bisphenol-C (BPC); bisphenol-S (BPS); phenolphthalein (Ph); catechol; resorcinol; 1,5and 2.7-dihydroxynaphthalene (DHN-1,5 and DHN-2,7) and 1,8-dihydroxyanthraquinone (DHA-1,8). Interfacial polycondensation of DPHDCT with BPA was investigated in detail in order to select optimum reaction conditions. The yield of polycyanurates varies from 6 I% to 79%. The polycyanurates are soluble in chlorinated solvents such as chloroform, dichloroethane. dichloromethane and chlorobenzene. The reduced viscosity for polycyanurates, determined with a 1 g disolution in chloroform at 25 + 3°C was found to be in the range 0.50-0.68 dl g. All the polycyanurates were characterized by IR spectra. The densities of the polycyanurates, determined using the suspension method at 25 3°C, range between 1.196 and 1.330 g cm. The overall reactivity of diols, based on reduced viscosity values, was found to decrease in the following order: PCBPA> PCPh> PCBPC> PCR>PCDHN-2,7 > PCDHN-I,5 > PCC > PCDHA-1.8 > PCBPS. The thermal stability of polycyanurates, derived from various temperature characteristics, was found to decrease in the following order: PCBPA> PCBPS> PCBPC > PCC PCR> PCDHN-2,7 PCDHN-.l 5 > PCDHA-1,8 > PCPh.

Physico-chemical and immunological examination of the thermal stability of tetanus toxoid conjugate vaccines

Vaccine ◽  
2002 ◽  
Vol 20 (29-30) ◽  
pp. 3509-3522 ◽  
Author(s):  
Mei M Ho ◽  
Fatme Mawas ◽  
Barbara Bolgiano ◽  
Xavier Lemercinier ◽  
Dennis T Crane ◽  
...  
Keyword(s):  
Thermal Stability ◽  
Tetanus Toxoid ◽  
Conjugate Vaccines ◽  
Physico Chemical ◽  
Immunological Examination ◽  
Thermal Stability Of

scholarly journals Physico-Chemical Characteristics and Thermal Stability of Oil Based Lubricating Fluids for Glassware Production

2014 ◽  
Vol 8 (2) ◽  
pp. 205-209 ◽  
Author(s):  
Ivanna Saban ◽  
◽  
Oleg Grynyshyn ◽  
Victoria Kochubei ◽  
◽  
...  
Keyword(s):  
Thermal Stability ◽  
Chemical Characteristics ◽  
Physico Chemical ◽  
Thermal Stability Of

scholarly journals Features of the Structure and Physical-Chemical Properties of Poly-Ortho-Toluidine Doped with Toluenesulfonic Acid

2019 ◽  
Vol 20 (1) ◽  
pp. 77-82
Author(s):  
A.L. Stepura ◽  
O.I. Aksimentyeva ◽  
P.Yu. Demchenko
Keyword(s):  
Crystal Structure ◽  
Thermal Stability ◽  
Electrical Conductivity ◽  
Specific Resistance ◽  
Oxidative Polymerization ◽  
Chemical Properties ◽  
Conductivity Activation Energy ◽  
Physical Chemical ◽  
Physico Chemical ◽  
Thermal Stability Of

Features of crystal structure, electrical conductivity and thermal stability of poly-ortho-toluidine (PoTi) samples, obtained with method of oxidative polymerization in the environment of sulfuric and toluenesulfonic acids (TSA), were investigated. It was discovered that PoTi-TSA samples are characterized withhigh crystallinity. According to the physico-chemical analysis, doping samples with TSA causes increase of PoTi thermal stability, electrical conductivity and sensor sensitivity on the contrary to samples doped with sulfuric acid. Based on temperature dependence of specific resistance, were calculated the values of the conductivity activation energy, which are within the limits of 0.2-0.4 eV depending on the type of dopant.

Physico-chemical properties and thermal stability of microcrystalline cellulose isolated from Alfa fibres

2014 ◽  
Vol 104 ◽  
pp. 223-230 ◽  
Author(s):  
Djalal Trache ◽  
André Donnot ◽  
Kamel Khimeche ◽  
Riad Benelmir ◽  
Nicolas Brosse
Keyword(s):  
Thermal Stability ◽  
Microcrystalline Cellulose ◽  
Chemical Properties ◽  
Physico Chemical ◽  
Thermal Stability Of
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