Thermal stabilisation of PVC with metal soaps of Khaya seed oil

Okieimen, F. E.; Eromonsele, Oluyemisi C.

doi:10.1002/(sici)1522-9505(19990801)269:1<8::aid-apmc8>3.0.co;2-6

Cited by 3 publications

(2 citation statements)

References 21 publications

(25 reference statements)

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“…This information is important for the production of new fluorescent polymers with high thermal and photochemical stability. Thermogravimetric analysis (TGA) is a well‐known tool for thermal stability study 16, 17. Kinetic processes18 related to cure and material composition19–21 can be also investigated by this technique.…”

Section: Introductionmentioning

confidence: 99%

Retinal photoreceptor arrangement, SWS1 and LWS opsin sequence, and electroretinography in the South American marsupial Thylamys elegans (Waterhouse, 1839)

Palacios

Bozinovic²,

Vielma

et al. 2010

J of Comparative Neurology

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We studied the retinal photoreceptors in the mouse opossum Thylamys elegans, a nocturnal South American marsupial. A variety of photoreceptor properties and color vision capabilities have been documented in Australian marsupials, and we were interested to establish what similarities and differences this American marsupial showed. Thylamys opsin gene sequencing revealed two cone opsins, a longwave-sensitive (LWS) opsin and a shortwave-sensitive (SWS1) opsin with deduced peak sensitivities at 560 nm and 360 nm (ultraviolet), respectively. Immunocytochemistry located these opsins to separate cone populations, a majority of LWS cones (density range 1,600-5,600/mm(2)) and a minority of SWS1 cones (density range 100-690/mm(2)). With rod densities of 440,000-590,000/mm(2), the cones constituted 0.4-1.2% of the photoreceptors. This is a suitable adaptation to nocturnal vision. Cone densities peaked in a horizontally elongated region ventral to the optic nerve head. In ventral-but not dorsal-retina, roughly 40% of the LWS opsin-expressing cones occurred as close pairs (double cones), and one member of each double cone contained a colorless oil droplet. The corneal electroretinogram (ERG) showed a high scotopic sensitivity with a rod peak sensitivity at 505 nm. At mesopic light levels, the spectral ERG revealed the contributions of a UV-sensitive SWS1 cone mechanism and an LWS cone mechanism with peak sensitivities at 365 nm and 555 nm, respectively, confirming the tuning predictions from the cone opsin sequences. The two spectral cone types provide the basis for dichromatic color vision, or trichromacy if the rods contribute to color processing at mesopic light levels.

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Section: Introductionmentioning

confidence: 99%

Retinal photoreceptor arrangement, SWS1 and LWS opsin sequence, and electroretinography in the South American marsupial Thylamys elegans (Waterhouse, 1839)

Palacios

Bozinovic²,

Vielma

et al. 2010

J of Comparative Neurology

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show abstract

“…Well-developed thermogravimetric analysis (TG) techniques 22 are widely used in order to study the thermal stability of materials 23,24 through the analysis 25 of the overall thermal degradation process 26±28 in terms of kinetic behaviour 29 and chemical structure and composition. 30 Quantitative and comparative analysis of the TG results can be used in order to determine the causes of the demonstrated thermal behaviour and relate it to the molecular structure.…”

Section: Introductionmentioning

confidence: 99%

Triazolephthalocyanine versus phthalocyanine nickel(ii) and copper(ii) complexes: a thermogravimetric stability study

Stéfani¹,

Cabezón²,

Denardin³

et al. 2000

J. Mater. Chem.

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New fluorescent monomers and polymers displaying an intramolecular proton‐transfer mechanism in the electronically excited state. III. Thermogravimetric stability study of the benzazolylvinylene derivatives

Campo

Rodembusch

Stéfani

2005

J of Applied Polymer Sci

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ABSTRACT:Six fluorescent benzazolylvinylene derivatives were studied by thermogravimetric analysis (TGA), differential scanning calorimetry (DSC), and related molecular parameters. The thermal stability was determined in terms of the steps of degradation and its fitting parameters, such as maximum degradation rate (R max ), maximum degradation rate temperature (T Rmax ), degradation temperature range, which is related to the half-width at half-height values (⌫), and the kinetic parameters: activation energy (E a ), pre-exponential factor (A), and reaction order (n) obtained by Barrett's method. Different organic substitutes and heteroatoms do not play a fundamental role in the thermal behavior of the studied dyes. The compensation effect between pre-exponential factor and activation energy was confirmed.

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Thermal stabilisation of PVC with metal soaps of Khaya seed oil

Cited by 3 publications

References 21 publications

Retinal photoreceptor arrangement, SWS1 and LWS opsin sequence, and electroretinography in the South American marsupial Thylamys elegans (Waterhouse, 1839)

Retinal photoreceptor arrangement, SWS1 and LWS opsin sequence, and electroretinography in the South American marsupial Thylamys elegans (Waterhouse, 1839)

Triazolephthalocyanine versus phthalocyanine nickel(ii) and copper(ii) complexes: a thermogravimetric stability study

New fluorescent monomers and polymers displaying an intramolecular proton‐transfer mechanism in the electronically excited state. III. Thermogravimetric stability study of the benzazolylvinylene derivatives

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