Structural Study of Dried Linseed Film using Two-Stage Pyrolysis-Gas Chromatography/Mass Spectrometry.

Niimura, Noriyasu; Kishi, Naoya; Miyakoshi, Tetsuo

doi:10.5702/massspec.51.229

Cited by 5 publications

(3 citation statements)

References 8 publications

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“…Also shown is carbon dioxide (CO 2 ). and linolenic acids (Niimura et al, 2003). Ten intact starch granules were found in sample G/9b 520e525 (Fig.…”

Section: Resultsmentioning

confidence: 97%

Dental calculus reveals potential respiratory irritants and ingestion of essential plant-based nutrients at Lower Palaeolithic Qesem Cave Israel

Hardy

Radini

Buckley

et al. 2016

Quaternary International

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“…Also shown is carbon dioxide (CO 2 ). and linolenic acids (Niimura et al, 2003). Ten intact starch granules were found in sample G/9b 520e525 (Fig.…”

Section: Resultsmentioning

confidence: 97%

Dental calculus reveals potential respiratory irritants and ingestion of essential plant-based nutrients at Lower Palaeolithic Qesem Cave Israel

Hardy

Radini

Buckley

et al. 2016

Quaternary International

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“…As the resulting bonds are formed between the fatty acids, it is a transverse-binding reaction. The formed bonds can be of either a carbon -carbon (C-C) type, ether (C-O-C) type or peroxide (C-O-O-C) type [104]. Literature describes also other formations of the links, including that of two cyclic fatty acids.…”

Section: Terminationmentioning

confidence: 99%

Study of Selected Natural Materials Ignitability

Martinka

Hrušovský

Chrebet

et al. 2014

AMR

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This scientific study deals with a complex research of initiation process of selected natural materials. The first chapter deals with research of the influence of density and thermal modification of spruce wood (Picea abies(L.) Karst.) on the critical heat flux density for the pilot ignition. In this chapter the thermally modified and unmodified samples of a spruce wood were investigated. The thermally modified samples were prepared according to temperature program for the ThermoWood - Thermo-S (maximum temperature during the thermal modification was 190 °C) and ThermoWood - Thermo-D (the maximum temperature during the thermal modification was 212 °C) production. Critical density of heat flux was determined on a cone calorimeter test by procedures in accordance with ISO 5660-1:2002. The obtained results showed that the thermally modified spruce wood in comparison with the thermally unmodified one had higher critical density of heat flux. The second chapter is aimed on determination of ignition activation energy of pure cellulose, cellulose impregnated by water solutions of KHCO3and (NH4)2HPO4with concentrations of 5, 10 and 15 wt. % and on determination of ignition activation energy of dust from beech wood (Fagus sylvaticaL.). The activation energies were determined in accordance with isothermal, dynamic and non-isothermal model-free methods. The obtained results showed that the ignition activation energy of cellulose impregnated by water solutions of KHCO3and (NH4)2HPO4have lower activation energy than the pure cellulose. The obtained data on the activation energy of beech wood dust showed that the activation energy depends significantly on the degree of conversion. Chapter three deals with the research of inclination of selected vegetable oils (Linseed, Sesame and Sunflower oil) applied to cotton to self-ignite. The propensity towards spontaneous combustion of the mentioned oils was investigated by Mackey test and Accelerating Rate Calorimetry. The results showed that the ratios of oil mass to the mass of the carrier, on which oil is applied, had significant impact on the propensity of vegetable oil to the spontaneous combustion. The highest propensity to spontaneous combustion of the investigated materials showed the Linseed oil.

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“…The bonds formed can be of either carbon‐to‐carbon (C–C), ether (C–O–C), or peroxide (C–O–O–C) types, as shown in Fig. 1 (13,15). Other bond formations, including the creation of a ring structure between two fatty acids, have been described in the literature.…”

Section: Fundamentals Of the Autooxidation Of Vegetable Oilsmentioning

confidence: 99%

Evaluation of the Self‐Heating Tendency of Vegetable Oils by Differential Scanning Calorimetry

Baylon

Stauffer

Delémont

2008

Journal of Forensic Sciences

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The evaluation of the self-heating propensity of a vegetable (or animal) oil may be of significant importance during the investigation of a fire. Unfortunately, iodine value and gas chromatographic-mass spectrometric analysis do not lead to meaningful results in this regard. To the contrary, differential scanning calorimetry (DSC), which does not measure the chemical composition of the oil, but rather its thermodynamic behavior, produces valuable results. After a thorough literature review on the autooxidation of vegetable oils, several oils with different self-heating tendencies were analyzed using a Mettler-Toledo differential scanning calorimeter DSC 25 between 40 degrees C and 500 degrees C. Analyses were carried out both under air and nitrogen atmosphere to identify the phenomena due to autooxidation reactions. Using DSC, it was possible to observe the induction period of the oil (when available), the three different exothermic events, and the autoignition temperature (relatively independent of the oil type).

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Structural Study of Dried Linseed Film using Two-Stage Pyrolysis-Gas Chromatography/Mass Spectrometry.

Cited by 5 publications

References 8 publications

Dental calculus reveals potential respiratory irritants and ingestion of essential plant-based nutrients at Lower Palaeolithic Qesem Cave Israel

Dental calculus reveals potential respiratory irritants and ingestion of essential plant-based nutrients at Lower Palaeolithic Qesem Cave Israel

Study of Selected Natural Materials Ignitability

Evaluation of the Self‐Heating Tendency of Vegetable Oils by Differential Scanning Calorimetry

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