Sorption of sodium dodecyl sulfate by polyaniline–cellulose acetate polymeric blends as seen by UV–vis spectroscopy

2006 ◽  
Vol 275 (1-3) ◽  
pp. 221-227 ◽  
Author(s):  
Artur J.M. Valente ◽  
Hugh D. Burrows ◽  
Victor M.M. Lobo
Polymer ◽  
2005 ◽  
Vol 46 (16) ◽  
pp. 5918-5928 ◽  
Author(s):  
A.J.M. Valente ◽  
H.D. Burrows ◽  
A.Ya. Polishchuk ◽  
C.P. Domingues ◽  
O.M.F. Borges ◽  
...  

RSC Advances ◽  
2015 ◽  
Vol 5 (124) ◽  
pp. 102750-102758 ◽  
Author(s):  
Omer Faruk Sarioglu ◽  
Asli Celebioglu ◽  
Turgay Tekinay ◽  
Tamer Uyar

Novel electrospun fibrous biocomposites were developed by immobilizing two different sodium dodecyl sulfate (SDS) biodegrading bacterial strains on electrospun non-porous cellulose acetate (nCA) and porous cellulose acetate (pCA) webs.


2006 ◽  
Vol 514-516 ◽  
pp. 905-909 ◽  
Author(s):  
Artur J.M. Valente ◽  
Hugh D. Burrows ◽  
Victor M.M. Lobo

The interaction between sodium dodecyl sulfate (SDS) and blends of polyaniline (PANi) and cellulose acetate (CA) is discussed. The diffusion coefficients of SDS in the blends show that the transport process is accompanied by interactions between the diffusant and the polymeric matrix. In the visible absorption spectrum, the interaction between SDS and CA-PANi blends results in a red shift of the maximum absorption wavelength. This behaviour is explained on the basis of alterations in the lamellar phase of the polymer upon SDS sorption. The interactions between SDS and the blend film are of the Langmuir-type. These blends also show an interesting selective behaviour to SDS with respect to a set of similar surfactants.


2009 ◽  
Vol 111 (4) ◽  
pp. 1947-1953 ◽  
Author(s):  
R. F. P. Pereira ◽  
D. A. Cerqueira ◽  
A. J. M. Valente ◽  
A. Y. Polishchuk ◽  
H. D. Burrows ◽  
...  

2020 ◽  
Vol 8 (1) ◽  
pp. 21-26
Author(s):  
Radnoosh Mirzajani ◽  
Ebrahim Mirzajani ◽  
Heshmatollah Ebrahimi-Najafabadi

Background: Hemoglobin (Hb), oxygen, carbon dioxide, and electron transporter of the body, may enter to an oxidation process that can convert oxyhemoglobin (oxyHb) to methemoglobin (metHb) and hemichrome. Surfactants can facilitate oxidation process that may accumulate hemichrome in red blood cells. Methods: In the present study, the interaction of purified Hb with sodium dodecyl sulfate (SDS, 0-5 mM) and ascorbic acid (AA, 0-5 mM) was evaluated by UV-Vis spectroscopy and multivariate curve resolution techniques. Results: Reconstructed spectral and concentration profiles showed three forms of Hb name as oxyHb, metHb, and hemichrome with lack of fit values less than 1.85%. AA hindered the oxidation process of Hb. Conclusion: A decrease in critical micelle concentration of SDS in the presence of AA and interaction of AA with hydrogen peroxide, which is produced during the interaction of Hb with SDS, are two reasons for diminution in the oxidation process of Hb when accompanied with AA.


Desalination ◽  
2012 ◽  
Vol 290 ◽  
pp. 99-106 ◽  
Author(s):  
Negin Ghaemi ◽  
Sayed S. Madaeni ◽  
Abdolhamid Alizadeh ◽  
Parisa Daraei ◽  
Vahid Vatanpour ◽  
...  

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