Light polymers

Dr. Wojciech Szczepankiewicz was born in Wolbrom, Poland, in 1959. He received his M.Sc. in polymer chemistry from the Silesian University of Technology in Gliwice, Poland, in 1985 and his Ph.D. in 1994 under the supervision of Prof. Jerzy Suwiriski at the same university. In 2002-03, he spent a period at Hasselt University (Belgium) with Prof. Dirk Vanderzande s lighting polymer research group. His research area is focused on the synthesis and reactivity of heterocyclic compounds in the azole and azine series. 

Refraction of light Polymer dispersed liquid crystals (PDLC), gel and polymer network displays... 

Polarimeter (Section 7.4) An instrument used to determine the amount by which a compound rotates the plane of polarization of plane-polarized light. Polymer (Chapter 24) A very large molecule made up of repeating units. 

In cycling, light polymer produots have replaced metal parts. Today s bicycles are more effioient than those used previously beoause of their improved strength and resistance. Also, polymer helmets are lighter and stronger than ever before. 

Freeze-drying Production of dried light polymers called cryogels based on sublimation of frozen solvents Cryogels mostly mesoporous Density of solvents must be invariant with freezing [69, 72, 73]... 

Uses of FT-IR microspectroscopy include general characterization of particulate matter, dichroic measurements with polarized light, polymer characterization. semiconductor measurements, the identification of contaminants, as well as forensic, biological, and pharmaceutical applications [157]-11.59). 

Preferred materials for light guides are fused silica, glasses or specific polymers. The latter are cheap and can be manufactured easily. If sensor use is restricted to visible light, polymer fibres are sufficient commonly. Fused silica is characterized by maximum spectral transparency and thus useful for light conduction over long distances. 

Fig. 5. A high resolution electron micrograph of a thin cross-section of the 114% MMA-grafted fiber (Merino wool), showing the appearance of lamella structure of the paracortex (P). The layer structures are delineated by the electron light polymers.

Concerning their reactivity towards UV laser light, polymers may be classified into two categories [53] ... 

Larche, J.-F., Bussiere, P.-O., Gardette, J.-L. How to reveal latent degradation of coatings provoked by UV-light. Polym. Degrad. Stab. 95, 1810-1817 (2010)... 

The result may be explained as follows. First note that for the given spatial resolution, in the order of the wavelength of light, polymers appear point-like. A dilute solution of polymers, therefore, resembles a system of independently moving point-like colloids. The intermediate scattering law then relates to the diffusive motion of the center of mass of a single polymer, as described by the... 

Vinyl chloride and vinyl acetate polymers are discoloured when exposed to heat or light. Polymers containing long sequences of either monomer should have some calcium... 

Tsuji K, Seiki T. Electron spin resonance study of poly(2,6-dimethylphenylene oxide) irradiated with ultraviolet light. Polym. J. 1973 4(6) 589-600. 

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