Materials Literature
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A detailed study of the three-dimensional (3-D) confinement of polystyrene- block -poly(ferrocenylethylmethylsilane) ( PS- b -PFS ) diblock copolymers in silica colloidal crystals and inverse silica colloidal crystals is reported. Inversion of the silica colloidal crystal lattice with PS- b -PFS is confirmed by scanni…
The exponentially growing layer-by-layer (LBL) films made from poly(diallyldimethylammonium chloride) (PDDA) and poly(acrylic acid) (PAA) were used to load and unload the CdTe nanoparticles (NPs). The reversible loading of NPs were investigated through UV-vis studies and further confirmed by confocal microscopy. In ad…
A novel platform has been developed for combined cancer chemotherapy and hyperthermia based on iron oxide magnetic nanoparticles functionalized with cis-diamminedichloroplatinum(II) (cisplatin). The capabilities of this system for heating and controlled drug release were investigated, and the system was tested in vitr…
A facile and effective route toward the synthesis of ZnS multiangular branched nanostructures with needle-shaped tips has been developed. An average width of the structurally and chemically uniform, single-crystalline, defect-free tips was found to be less than 10 nm. Cathodoluminescence from individual ZnS multiangul…
A new class of nanoscale light‐harvesting discotic liquid crystalline porphyrins, with the same basic structure of the best photoreceptor in nature (chlorophyll), was synthesized. These materials can be exceptionally aligned into a highly ordered architecture in which the columns formed by intermolecular π–π stacking…
In the present study polyacrylamide (PAm)-gelatin-hydroxyapatite (HA) composites have been synthesized by suspension polymerization method. The prepared composites were characterized by Fourier transform spectroscopy (FTIR) which revealed the presence of functional groups in the composite. The X-ray diffraction (XRD)…
The work covers the issues of productivity increase and economic effectiveness of hydraulic circuit hammer through changes of constructive and functional parameters.
In the paper, the results of investigations on the milling cutters edges for splineway with and without hard surface layers. The wear examinations were divided into two groups: a) milling of the closed splineway and b) milling of the splineway opened on one side. The investigations were performed with material hardene…
The highly precise control device of active electric power consumed by metal -cutting lathes drives is described.
It is shown, that introduction in structure of a fine disperse powder of aluminium of liquid film-forming greasing and use of warm pressing allows to increase ecological safety of technological process of reception of products from fine disperse powders of aluminium, by decrease in raising dust ability of fine dispers…
Magnetovibrating separator with abilities to distribute grinding production slime and to obtain high quality conversion products is proposed. Constructive features and parameters of the device are presented.
Aspects of application of thermosynthesis technology in vibrating layer for composite powders with structural components mesa-, ultra- and nanodimensions for new niveua powders functional materials are discussed. It is submitted installation for thermosynthesis, the nomenclature of composite powders and examples nanos…
Results of experimental researches rotational ground melter, that works via rotation of working body and not requiring an external power source. Recommendations at the choice of its design data are given.
Editorial
Asymmetric and semi-symmetric amphiphilic diblock copolymers polystyrene-block-poly (dimethylaminoethyl methacrylate) (PS-b-PDMAEMA) with the same PS block length of 62 repeat units and quite short (3 repeat units) or equivalent (47 repeat units) length of PDMAEMA have been prepared simply by varying the ratio of the…
The viscoelastic properties of an ethylene/propylene/diene rubber (EPDM) containing 30 parts per hundred parts rubber [phr] carbon black (CB) were determined by dynamic mechanical thermal analysis (DMTA) measurements. A 15-term Maxwell-model was created to describe the time-dependent material behavior of this rubber.…
Methacrylate-structured poly(ampholyte)s were synthesized in the homopolymer and copolymer forms starting from the N-methacryloyl-L-histidine (MHist) and the N-isopropylacrylamide (NIPAAm). They were also obtained in the cross-linked (hydrogel) form, showing a close thermodynamic behaviour as that shown by the corresp…
Using of known hypotheses at calculation radioelements outputs (RE) on a fatigue at action of casual vibration meets major complexities at calculations in requirements of a casual loading. Designed calculated models are put in foundation of the automized subsystem for the analysis and security of time before fatigue f…
The new design of the bearing of sliding excluding loss of greasing through porous end faces of the bearing is developed. Presence of elastic cuffs provides hermetic sealing an end face.
Researches of influence of a temperature mode in system "sprayed particles - substrate " on formation of elements of nonequilibrium amorphizated structures of composite plasma coatingsNi80Cr20+12,5%MoS2(CaF2)+55%TiC are carried out. Increase of microhardness of spayed material was criterion of a amorphization degree.…