Now showing items 1-10 of 18
Antioxidative and antimicrobial screening of 19 commercial essential oils in Turkey
(International Society for Horticultural Science, 2009)
Plant oils have been used for wide variety purposes for many years in Turkey. These essential oils have usage in many areas such as perfumery, cosmetic, food flavoring and folkloric medicine. In the study, 19 commercial ...
Acylation of 2-methoxynaphthalene over ion-exchanged β-zeolite
Friedel-Crafts acylation of 2-Methoxynaphthalene was carried out over various ion-exchanged β zeolites (Mn+β, where Mn+: In3+, Zn2+, Al3+, Fe3+, La3+) with various anhydride (acetic, propionic and benzoic anhydrides), or ...
Yapay sindirim sıvısında doğal zeolitlerde meydana gelen morfolojik değişmeler
Doğal zeolitler biyoaktif maddelerdir. Doğal zeolitlerin hayvanlarda biyokütle arttırıcı besi katkı maddesi, insanlarda ülser tedavisinde mide asitliğini tamponlayıcı, asitliği düşürücü ilaç gibi değişik kullanım alanları ...
Thermal stabilisation of poly(vinyl chloride) by organotin compounds
The effect of LSN 117 (dioctyl tin bis isooctyl thioglycollate, an organotin compound) on the heat stability of plasticised PVC was investigated in this study. The organotin stabiliser had carbonyl and carboxylate groups ...
CO2 and N2 adsorption on the acid (HCl, HNO 3, H2SO4 and H3PO4) treated zeolites
CO2 and N2 adsorption on the acid treated natural and synthetic zeolites at 5◦C and 25◦C was studied. The system heterogeneity was higher for CO2 than N2 adsorption and decreased with acid treatment.
Development of synergistic heat stabilizers for PVC from zinc borate-zinc phosphate
(Taylor & Francis, 2009-01)
The importance of flame-retardant and smoke-suppressed poly(vinyl chloride) (PVC) compositions is increasing gradually in the polymer industry since PVC releases smoke and toxic gases (hydrogen chloride, HCl) during heating ...
Modification of surface morphology of UHMWPE for biomedical implants
(Materials Research Society, 2007)
Ultra High Molecular Weight Polyethylene (UHMWPE) samples were implanted with metal and metal-gas hybrid ions (Ag, Ag+N, C+H, C+H+Ar, Ti+O) by using improved MEVVA Ion implantation technique [1,2]. An extraction voltage ...
Studies in the utilization of biobased additives as thermal stabilizer for plasticized PVC
(Trans Tech Publications, 2009)
Divalent metal (barium, cadmium, calcium and zinc) soaps of rubber seed oil and their binary mixtures (BaJCd and CaJZn) and epoxidized rubber seed oil (4.5% epoxide content) and its admixtures with the single divalent metal ...
Preparation and microstuructural development of nanocrystalline titania and alumina
(Trans Tech Publications, 2004)
The preparation of nanocrystalline titania and alumina was investigated by sol-gel methods using titanium isopropoxide, boehmite and aluminum isopropoxide. Various drying control chemical additives like oxalic acid, ...
Effects of mechanical treatment on the formation of α-Al 2O3 from gibbsite
(Trans Tech Publications, 2004)
In this study preparation of fine alpha alumina powders derived from Bayer gibbsite was studied. Preparation of the alumina powders was performed by decomposition of the gibbsite into transition alumina phase followed by ...