Fundamental studies on the synthesis of heat-resistant polymers Summary report no. 12, 31 Jan. - 15 Sep. 1966 [PDF]
Synthesis and thermogravimetric analysis of heat resistant ...
Dalelio, G. F.
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مجلة جامعة الزيتونةHenna is one of the most popular cosmetics in Libya. It is used as a paste applied to the body or the hair. Para-phenylenediamine (PPD) is added to henna to make it darker.
Rabia Eshkourfu +2 more
doaj
A Novel Spectrophotometric Method for Determination of Percarbonate by Using N, N-Diethyl-P-Phenylenediamine as an Indicator and Its Application in Activated Percarbonate Degradation of Ibuprofen. [PDF]
Molecules, 2023 Li J, Chen A, Meng Q, Xue H, Yuan B.
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Stability of PMR-polyimide monomer solutions [PDF]
The stability of alcohol solutions of norborneyl capped PMR-polyimide resins was monitored during storage at ambient and subambient temperatures. Chemical changes during storage were determined spectroscopically using nuclear magnetic resonance.
Alston, W. B. +2 more
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Semiconducting polymers for gas detection [PDF]
Conjugated polyenes, and polyesters containing phthalocyanine in their backbone, were synthesized. These polymers were characterized by chemical analysis, thermogravimetric analysis, spectral analysis, and X-ray diffraction studies for crystallinity, as ...
Byrd, N. R., Sheratte, M. B.
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Instrumentation for Measurement of Gas Permeability of Polymeric Membranes [PDF]
, 1993 A mass spectrometric 'Dynamic Delta' method for the measurement of gas permeability of polymeric membranes has been developed. The method is universally applicable for measurement of the permeability of any gas through polymeric membrane materials.
Brown, Kenneth G. +3 more
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Ultraviolet and thermally stable polymer compositions [PDF]
, 1974 A class of polymers is provided, namely, poly(diarylsiloxy) arylazines. These polymers have a basic chemical composition which has the property of stabilizing the optical and physical properties of the polymer against the degradative effect of ...
Adamson, M. J. +3 more
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The 2-Methoxymethyl Modification of p -Phenylenediamine Reduces the Sensitization Risk for Hairdressers to Hair Dyes-An Occupational Hand Exposure-Based Risk Assessment. [PDF]
Dermatitis, 2022 Gargano EM +3 more
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Association of p-phenylenediamine exposure with alterations of pulmonary function, pruritus and health-related quality of life in hair dye factory workers: a cross-sectional study. [PDF]
Sci Rep, 2023 Zhang M +4 more
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