Thermoplastic Elastomers

Thermoplastics can be used for various applications, which range from household articles to the aeronautic sector. This book, ""Thermoplastic Elastomers"", is comprised of nineteen chapters, written by specialized scientists dealing with physical and/or chemical modifications of thermoplastics and thermoplastic starch. Such studies will provide a great benefit to specialists in food, electric, telecommunication devices, and plastic industries. Each chapter provides a comprehensive introduction to a specific topic, with a survey of developments to date

Magnetic alginate beads with high basic dye removal potential and excellent regeneration ability

The adsorption of crystal violet dye (CV) onto magnetic alginate composite (MAlg) from aqueous solutions was studied. Experiments were carried out as function of contact time, dosage, temperature, pH and CV concentration in the solutions. Optimum CV uptake was observed at equilibrium pH 7 and most of the CV was sorbed within 30 min. The equilibrium adsorption data were analyzed using two common adsorption models: Langmuir and Freundlich. The results revealed that Langmuir isotherm fit the experimental results well. The maximum adsorption capacity obtained from Langmuir isotherm equation was 0.113 mmol g−1 at 298±1 K. The kinetics adsorption of CV onto MAlg composite was investigated using the pseudo first order and pseudo second order kinetic models. The results showed that the adsorption of CV onto MAlg composite followed pseudo second order kinetic model. Thermodynamic data indicated that adsorption process is endothermic and spontaneous reaction. Due to their outstanding adsorption capacities, MAlg composite is an excellent adsorbent for the removal of CV. The Composite regeneration was greater than 98.6% with 0.01 M HCl, and MAlg composite could be repeatedly utilized for CV removal with negligible loss in sorption capacity.The accepted manuscript in pdf format is listed with the files at the bottom of this page. The presentation of the authors' names and (or) special characters in the title of the manuscript may differ slightly between what is listed on this page and what is listed in the pdf file of the accepted manuscript; that in the pdf file of the accepted manuscript is what was submitted by the author

VASCULAR ENDOTHELIAL GROWTH FACTOR VEGF G/C 405 AND C/A 2578 GENE POLYMORPHISMS IN CASES WITH PRE-ECLAMPSIA

Vascular endothelial growth factor gene plays a crucial role in physiological vasculogenesis and vascular permeability and has been implicated in the pathogenesis of pre-eclampsia (PE). VEGF's normal function is to create new blood vessels during embryonic development, new blood vessels after injury, muscle following exercise, and new vessels (collateral circulation) to bypass blocked vessels. This study carried on 170 pregnant women. Out of them, 100 cases with PE. Their mean age ± SD was 25.28 ± 4.59 years. Seventy nine (79%) cases had mild PE and 21 (21%) cases had severe PE. The other 70 subjects were clinically healthy pregnant women with complete successful pregnancy and no PE. VEGF C 405 G and C 2578 A polymorphisms were studied using PCR and RFLP. We found that PE among Egyptian women was strongly associated with pre-eclamptic mutations related to VEGF C 405 G and C 2578 A gene polymorphisms. There were statistically significant low frequencies of wild homozygous genotype CC and high frequencies of heterozygous mutant genotypes CG & CA and homozygous mutant genotypes GG & AA in PE cases compared to controls. The frequency of cases carrying the homozygous mutant genotype GG was higher among severe pre-eclamptic cases compared to mild pre-eclamptic cases. In addition, there were statistically significant high frequencies in PE cases compared to controls of mutant G and mutant A alleles