Grafting onto cellulose. V. Effect of complexing agents on Fenton's reagent (fe2−H2O2) -initiated grafting of poly(ethyl acrylate)

Graft Copolymerization onto Chitosan V: Grafting Ethyl Acrylate onto Chitosan Initiated By Ceric Ion and Its Anti Microbial Activity

Ethyl Acrylate was grafted onto chitosan by using the ceric ammonium nitrate as the initiator. The effect of initiator concentration, monomer concentration, time & temperature on % G and % E were studied. The grafted samples were characterized using FTIR, SEM, atomic force microscopy AFM and XRD methods. Xray diffraction showed changes in the crystallinity pattern of chitosan after the copolyme...

Grafting of porphyrins on cellulose nanometric films.

Ultrathin films of cellulose were functionalized with iron protoporphyrin IX (FePP). Spin-coating allows the production of silylated cellulose films in a controlled way. Cellulose regeneration is achieved through the hydrolyzation of the silane groups, exposing the film to acidic vapors. To enhance the reactivity of the cellulose surface to the protoporphyrin, carbonyldiimidazole (CDI) was used...

effect of oral presentation on development of l2 learners grammar

this experimental study has been conducted to test the effect of oral presentation on the development of l2 learners grammar. but this oral presentation is not merely a deductive instruction of grammatical points, in this presentation two hypotheses of krashen (input and low filter hypotheses), stevicks viewpoints on grammar explanation and correction and widdowsons opinion on limited use of l1...

The effects of several variables on shoot-tip grafting of clementing mandarin onto troyer citrange

Grafting Hypersequents onto Nested Sequents

·Ve introduce a new Gcn(zen-style framework of grafted hypc1rsequents that com\Jim's the fornrnlism of nested sequents with that of hyperscquents. To illustrate the potential of the frmnework. we present novel calculi for the modal logics K5 and KD5, m; well as for extensions of the modal logics K and KD with tlw axiom for shift rdlcxivity. Tlw latter of these extensions is also known as SDL + ...