نتایج جستجو برای: acrylonitrile

تعداد نتایج: 1955  

Journal: :Zeitschrift fur Naturforschung. Section C, Biosciences 1985
U Pfeffer B Schulz-Harder

The response of yeast cells to different kinds of "stress" is not identical. Cells of the stationary growth phase synthesize three new proteins of molecular weights 68, 27 and 24 kD, compared with cells of the exponential growth phase, while heat-shocked cells exhibit new proteins of 100, 90, 84, 70 and 24 kD. After treatment with acrylonitrile two new proteins with molecular weights of 70 and ...

Journal: :Talanta 1984
D P Zollinger M Bos A M van Veen-Blaauw W E van Der Linden

A procedure is proposed for the determination of malononitrile by differential pulse polarography in methanolic 0.1M tetraethylammonium iodide/0.001M tetramethylammonium hydroxide as the supporting electrolyte. In this medium malononitrile is chemically converted into an electroactive species. With close control of timing of the steps in the procedure the error of the method is +/-1.5% in the c...

2015
Vittorio Saggiomo Aldrik H. Velders

An easy and cheap fabrication method for intricate polydimethylsiloxane microfluidic devices is presented. The acrylonitrile butadiene styrene scaffold-removal method uses cheap, off-the-shelf materials and equipment for the fabrication of intricate microfluidic devices. The versatility of the method is proven by the fabrication of 3D multilayer, ship-in-a-bottle, selective heating, sensing, an...

2004

The Courtauld Research Laboratory in Maidenhead, Berkshire, in which the work described in this paper was done, was established to carry out basic research allied to the synthetic textile industry and was particularly occupied with the synthesis and properties of high polymers. From the outset freeradical polymerization was included in the programme, although initially with some misgivings, but...

Journal: :Indian Scientific Journal Of Research In Engineering And Management 2022

The studies on wollastonite reinforced recycled ABS (Acrylonitrile butadiene styrene) composites were investigated. Powder-based with a particle size of 13 microns was mixed Acrylonitrile styrene in various proportions wt.%. Recycled homogeneously and composite prepared using twin-screw extruder it pelletized. specimens the injection moulding process mechanical properties like tensile strength ...

2014
Zhenghai Tang Qiuyan Wei Baochun Guo

Materials Butyllithium solution in hexane (1.6 M) and molybdenum disulfide (MoS2, 99.0% purity) with an average diameter of about 1 μm were purchased from Aladdin. Nitrile rubber (NBR) with acrylonitrile content 40%, was manufactured by Jilin Chemical Industry Company, Jilin, China. 1butyl-3-methyimidazolium chloride ionic liquid was supplied by Henan Lihua pharmaceutical Co., Ltd. The chemical...

1998
M. Surianarayanan S. Panduranga Rao R. Vijayaraghavan K. V. Raghavan

The microcalorimetric studies on the polymerization of acrylonitrile with and without the thermal influence of polyacrylonitrile decomposition provide vital information on its thermal sensitivity and intrinsic safety. The present studies indicate that the exothermicity of polymerization and decomposition of polyacrylonitrile are kept under check by the self-regulatory role of the aqueous medium...

2012
Mahmoud. R. Mahmoud Wael. S. I. Abou-Elmagd El-Sayed. A. Soliman

New series of 2,3-disubstituted quinazolin-4(3H)one were synthesized via the reaction of the readily obtainable 2-thioxo-3-phenyl-quinazolin-4(3H)one 1 with ethyl chloroacetate followed by hydrazinolysis to afford the hydrazide 3 which allowed to react with different electrophilic reagents such as carbon disulphide, phenyl isothiocyanate, β-diketones, anhydrides, acrylonitrile, ethyl cinnamate,...

Journal: :Egyptian Journal of Chemistry 2021

This work presents the results of synthesis granular copolymers acrylonitrile with hexahydro-1,3,5-triacrylyltriazine and their modification organic amines, in particular diethylamine, as well a study physicochemical characteristics sorption properties obtained ion exchangers. The result was exchangers necessary based on divinylbenzene, N,N´-methylene-bis-acrylamide hexahydro-1,3,5-triacrylyltr...

2004

The Courtauld Research Laboratory in Maidenhead, Berkshire, in which the work described in this paper was done, was established to carry out basic research allied to the synthetic textile industry and was particularly occupied with the synthesis and properties of high polymers. From the outset freeradical polymerization was included in the programme, although initially with some misgivings, but...

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