نتایج جستجو برای: thermo gravimetric analysis

تعداد نتایج: 2836441  

2009
Marco J. Castaldi Eilhann Kwon

An investigation has been initiated to determine the effects of various atmospheres (6.9% 02iN2, 21 % 02iN2 (air), 30% 02iN2, 3% H2iN2 and pure N2) on the efficiency of gasifying or combusting rubber waste to produce synthesis gas or generate steam or power. This paper reports on the findings from a series of TGA experiments at various heating rates on styrene-butadiene copolymer (SBR), which i...

2009
Kaushlendra Singh Mark Risse

The proportional composition of cellulose, hemicellulose, lignin and minerals in a biomass plays a significant role in the proportion of pyrolysis products (bio-oil, char, and gases). Traditionally, the composition of biomass is chemically determined, which is a time consuming process. This paper presents the results of a preliminary investigation of a method using thermo-gravimetric analysis f...

2014
B. AKILA K. MANICKAVASAKAM

Chandrakanthi Chooranam, a siddha sastric herbomineral formulation comprises of 25 ingredients. Literature review evidenced no standardization work so far. Authors aims to investigate various analytical standardization parameters such as physicochemical standards, preliminary phytochemical analysis, Thin Layer Chromatography (TLC) photo documentation, High Performance Thin Layer Chromatography ...

Thermo Gravimetric Analysis (TGA) analysis was employed to investigate activation energy (Ea) for the process of degrading of poly(o-toluidine) (POT) applying Horwitz & Metzger, Coats & Redfern and Chan et al., methods. POT was synthesized by chemical oxidative polymerization method using Ammonium per Sulphate (APS) as an oxidant while Dodecylbenzene Sulphonic Acid (DBSA) and sul...

2009
H. R. THOMAS S. C. SEETHARAM

This technical note presents a coupled thermo-hydromechanical model for unsaturated soil, which can be applied in the context of high temperature. A new pore gas or bulk air transfer equation is introduced. Additionally the effect of temperature on the latent heat of vapourisation and specific heat capacities is incorporated. Adsorbed water is also included. The performance of the model is demo...

2011
Martins Emeje Christiana Isimi Stephen Byrn Joseph Fortunak Olobayo Kunle Sabinus Ofoefule

This paper is the first multi-scale characterization of the fluidize-dried gum extracted from the fresh fruits of the plant Abelmoschus esculentus. It describes the physical, thermal, sorptional and functional properties of this natural gum. Elemental analysis, scanning electron microscopy (SEM), particle size analysis, X-ray powder diffraction (XPRD), thermo-gravimetric analysis (TGA), differe...

2011
Garima Tripathi Deepak Srivastava

The degradation of the epoxy system was studied for the prepared six blend samples with the incorporation of 0 wt% 25 wt% carboxyl terminated butadiene acrylonitrile (CTBN) copolymer, on a dynamic basis using Thermo gravimetric analysis (TGA) technique under a nitrogen atmosphere. The blends were prepared by physical mixing and were cured with diamine. The degradation of each sample followed se...

2013
K. Mohana Priyadarshini A. Chandramohan T. Uma Devi S. Selvanayagam B. Sridhar

A new charge transfer molecular complex salt of picric acid with m-toluidine was synthesized and the structure confirmed by single crystal X-ray diffraction (XRD) and NMR spectral analyses. Single crystals of m-toluidinium picrate have been grown by slow solvent evaporation solution growth technique using ethanol as the solvent at ambient temperature. The single crystal XRD analysis of MTP salt...

Christiana Isimi Joseph Fortunak Martins Emeje, Olobayo Kunle Sabinus Ofoefule Stephen Byrn

This paper is the first multi-scale characterization of the fluidize-dried gum extracted from the fresh fruits of the plant Abelmoschus esculentus. It describes the physical, thermal, sorptional and functional properties of this natural gum. Elemental analysis, scanning electron microscopy (SEM), particle size analysis, X-ray powder diffraction (XPRD), thermo-gravimetric analysis (TGA), differe...

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