Effects of affinity and aggregation on parallel diffusion of tri-sulfonated azo compounds into water-swollen cellulose membranes

1996 ◽  
Vol 274 (12) ◽  
pp. 1145-1151 ◽  
Author(s):  
M. Maekawa ◽  
M. Kondo
Keyword(s):  
Azo Compounds ◽  
Parallel Diffusion ◽  
Cellulose Membranes

Effects of sulfonated surfactants on parallel diffusion of mono azo dye with high aggregation constant into cellulose membranes

2001 ◽  
Vol 83 (8) ◽  
pp. 1781-1785 ◽  
Author(s):  
Masako Maekawa ◽  
Chiyo Kamada ◽  
Kiyomi Miyata
Keyword(s):  
Azo Dye ◽  
Parallel Diffusion ◽  
Cellulose Membranes

Parallel Diffusion of a Sulfonated Monoazo Dye in Water-Swollen Porous Cellulose Membranes

1995 ◽  
Vol 170 (1) ◽  
pp. 146-153 ◽  
Author(s):  
Masako Maekawa ◽  
Miya Tanaka ◽  
Hiroyuki Yoshida
Keyword(s):  
Parallel Diffusion ◽  
Cellulose Membranes

Incorporation of micro/nanoparticles of PCL with essential oil of Cymbopogon nardus in bacterial cellulose

2018 ◽  
Vol 1 (2) ◽  
pp. 37
Author(s):  
Aline Krindges ◽  
Vanusca Dalosto Jahno ◽  
Fernando Morisso
Keyword(s):  
Particle Size ◽  
Particulate Matter ◽  
Essential Oil ◽  
Zeta Potential ◽  
Bacterial Cellulose ◽  
Culture Medium ◽  
Static Culture ◽  
Cymbopogon Nardus ◽  
Cellulose Membranes

Incorporation studies of particles in different substrates with herbal assets growing. The objective of this work was the preparation and characterization of micro/nanoparticles containing cymbopogon nardus essential oil; and the incorporation of them on bacterial cellulose. For the development of the membranes was used the static culture medium and for the preparation of micro/nanoparticles was used the nanoprecipitation methodology. The incorporation of micro/nanoparticles was performed on samples of bacterial cellulose in wet and dry form. For the characterization of micro/nanoparticles were carried out analysis of SEM, zeta potential and particle size. For the verification of the incorporation of particulate matter in cellulose, analyses were conducted of SEM and FTIR. The results showed that it is possible the production and incorporation of micro/nanoparticles containing essential oil in bacterial cellulose membranes in wet form with ethanol.

Fluorescence spectra of alkaline earth derivatives of azo compounds

1962 ◽  
Author(s):  
Rodney Louis Olsen
Keyword(s):  
Alkaline Earth ◽  
Fluorescence Spectra ◽  
Azo Compounds ◽  
Derivatives Of

15N, 13C, and 1H NMR Spectra of Azo and Hydrazo Compounds Derived from 1,3,3-Trimethyl-2-methylidene-2,3-dihydroindole (Fischer Base)

1998 ◽  
Vol 63 (7) ◽  
pp. 1012-1020 ◽  
Author(s):  
Antonín Lyčka ◽  
Josef Jirman ◽  
Alois Koloničný
Keyword(s):  
Double Bond ◽  
Hydrochloric Acid ◽  
Nmr Spectra ◽  
Coupling Constants ◽  
Azo Compounds ◽  
Passive Component ◽  
Geometric Isomers ◽  
H Nmr ◽  
Fischer Base ◽  
Hydrazone Form

The 15N, 13C, and 1H NMR spectra were measured for azo and hydrazo compounds derived from 1,3,3-trimethyl-2-methylidene-2,3-dihydroindole (Fischer base), which is a passive component with a terminal methylidene group. Products prepared by coupling in hydrochloric acid exist in the corresponding hydrazone form as the E-isomers. Neutralization gives a mixture of two isomeric azo compounds which differ in the arrangement at the C(2)=C(10) double bond. This mixture was alkylated with methyl iodide to obtain the =N-N(CH3)- hydrazone derivatives. The geometric isomers were resolved based on the NOESY approach and the stereospecific behaviour of the 2J(15N,13C) coupling constants was studied for the 15N-labelled compounds.

Impact para position on rho value and rate constant and study of liquid crystalline behavior of azo compounds

2021 ◽  
Author(s):  
Mohammed Mezher Aftan ◽  
Abdualwahid Abdualsatar Talloh ◽  
Adil Hussein Dalaf ◽  
Hanaa Kaain Salih
Keyword(s):  
Rate Constant ◽  
Liquid Crystalline ◽  
Para Position ◽  
Azo Compounds

Bifunctional Au/Co3O4‐Cs (Basic and Redox)‐ Catalyzed Oxidative Synthesis of Aromatic Azo Compounds from Anilines

2021 ◽  
Author(s):  
Charles O. Oseghale ◽  
Dele Peter Fapojuwo ◽  
Oyekunle Azeez Alimi ◽  
Christianah Aarinola Akinnawo ◽  
Batsile M. Mogudi ◽  
...  
Keyword(s):  
Azo Compounds ◽  
Aromatic Azo Compounds
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