Interactions of nanocrystalline cellulose with an oppositely charged surfactant in aqueous medium

2012 ◽  
Vol 415 ◽  
pp. 310-319 ◽  
Author(s):  
Neha Dhar ◽  
Daniel Au ◽  
Richard C. Berry ◽  
Kam C. Tam
Keyword(s):  
Aqueous Medium ◽  
Nanocrystalline Cellulose ◽  
Oppositely Charged

Induction of Secondary Structure through Micellization of an Oppositely Charged Pair of Homochiral Block- and Homopolypeptides in an Aqueous Medium

2015 ◽  
Vol 36 (22) ◽  
pp. 1958-1964 ◽  
Author(s):  
Omer F. Mutaf ◽  
Akihiro Kishimura ◽  
Yuki Mochida ◽  
Ahram Kim ◽  
Kazunori Kataoka
Keyword(s):  
Secondary Structure ◽  
Aqueous Medium ◽  
Charged Pair ◽  
Oppositely Charged

Interaction of a Cationic Surfactant with an Oppositely Charged Polymer

2017 ◽  
Vol 32 (3-4) ◽  
pp. 107 ◽  
Author(s):  
Soumen Ghosh ◽  
Arpan Mal ◽  
Tanushree Chakraborty ◽  
Gobinda Chandra De ◽  
Daniel Gerrard Marangoni
Keyword(s):  
Aqueous Medium ◽  
Cationic Surfactant ◽  
Carboxymethyl Cellulose ◽  
Hydrophobic Interactions ◽  
Dodecyltrimethylammonium Bromide ◽  
Behavioural Pattern ◽  
Anionic Sites ◽  
Anionic Polymer ◽  
Electrostatic And Hydrophobic Interactions ◽  
Oppositely Charged

The interactions between the cationic surfactant Dodecyltrimethylammonium Bromide (DTAB) and anionic polymer sodium carboxymethyl cellulose (Na-CMC) in aqueous medium were studied at 300K over different concentrations of Na-CMC by tensiometry, conductometry, viscometry, turbidimetry and fluorimetry. Aggregation of surfactant was attained in two steps, the first being the monomeric adsorption of surfactants on anionic sites of the polymer saturating at lower concentrations of surfactant and the second one being the formation of micelles by surfactants at higher concentrations. Mainly, two types of interactions prevailed throughout namely, electrostatic and hydrophobic interactions. Due to the variation of the interactions depending on the concentrations of polymer, there has been considerable differences in the behavioural pattern of the profiles for the lower concentrations of polymer compared to that of the upper ones.

Nanocrystalline cellulose grafted phthalocyanine: a heterogeneous catalyst for selective aerobic oxidation of alcohols and alkyl arenes at room temperature in a green solvent

RSC Advances ◽  
2015 ◽  
Vol 5 (47) ◽  
pp. 37517-37520 ◽  
Author(s):  
Prashant Chauhan ◽  
Ning Yan
Keyword(s):  
Aqueous Medium ◽  
Heterogeneous Catalyst ◽  
Cellulose Nanocrystals ◽  
Room Temperature ◽  
Aerobic Oxidation ◽  
Nanocrystalline Cellulose ◽  
Green Solvent ◽  
Oxidation Of Alcohols ◽  
Selective Aerobic Oxidation

A Cu-tetrasulfonate-phthalocyanine was conjugated to cationic cellulose nanocrystals which serve as a heterogeneous based catalyst for aerobic oxidation of alcohols and alkyl arenes at room temperature in aqueous medium.

Rheological behaviour of the condensed suspension of fluorinated montmorillonite “rassoul” particles in aqueous medium

2005 ◽  
Vol 123 ◽  
pp. 341-344
Author(s):  
A. Khaldoun ◽  
F. González-Caballero ◽  
J. G. López-Durán ◽  
N. Mahrach ◽  
M. L. Kerkeb
Keyword(s):  
Aqueous Medium ◽  
Rheological Behaviour
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