Enhancement of Polyolefins Compatibility with Natural Fibers through Chemical Modification

Basic and Reactive Dyes Sorption Enhancement of Rice Hull through Chemical Modification

Problem statement: Many studies have been conducted on the removal of either anionic or cationic dyes. However, as a mixture of dyes does commonly exist together in wastewater, therefore it is of great interest to have a material that can remove both types of dyes. Approach: To prepare an inexpensive and efficient sorbent by chemically modifying rice hull for the removal of both basic and react...

Chemical modification of maleic anhydride polymers with carbazole

Maleic anhydride (MAN) copolymers with methyl methacrylate(MMA), ethyl methacrylate(EMA), methyl acrylate(MA), ethyl acrylate (EA) and buthyl acrylate (BA) ( in a 1:1 mole ratio) were synthesized by free radical polymerizations method under vacuum -azobis(isobutironitrile)(AIBN) as an initiator of reaction at 701C. The copolymer compositions were determined using related 1H NMR spectra techni...

Enhancement of Transglycosylation Activity of Lysozyme by Chemical Modification

An attempt to enhance the transglycosylation activity of lysozyme -'as made by chemical modification. Computer simulation of the Iysozyme-catalyzed reaction indicated that inhibition of the sugar residue binding te the binding subsite A caused a significant increase in transglycosylation activity. Therefore, the binary modification of Asp 1O1 and Trp 62 in hen egg white lysezyme was made in ord...

The chemical behavior of terminally tert-butylated polyolefins

The chemical behavior of various oligoenes 2 has been studied. The catalytic hydrogenation of diene 3 yielded monoene 4. Triene 7 was hydrogenated to diene 8, monoene 9 and saturated hydrocarbon 10. Bromine addition to 3 and 7 yielded the dibromides 17 and 18, respectively, i.e., the oligoene system has been attacked at its terminal olefinic carbon atoms. Analogously, the higher vinylogs 19 and...

Enhancement of composite performance by hollow polyester fibers