Fluorescence Microscopy Observation of the Adsorption onto Hair of a Fluorescently Labeled Cationic Cellulose Ether

Regismond, S.T.A.; Heng, Y. M.; Goddard, E. D.; Winnik, Françoise M.

doi:10.1021/la9811665

Cited by 28 publications

(29 citation statements)

References 10 publications

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“…This may be due to the ability of the polyelectrolyte to penetrate into the structure of the negatively charged bre, as has been observed for cotton 129 and hair. 112 …”

Section: 68120-127mentioning

confidence: 99%

Complexes of oppositely charged polyelectrolytes and surfactants – recent developments in the field of biologically derived polyelectrolytes

2013

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We review the work done on complexes between biopolyelectrolytes such as ionically modified cellulose or chitosan and oppositely charged surfactants. Around equimolarity of the charges one typically observes precipitation but for other mixing ratios one may form long-time stable complexes, where structure and rheology depend on the mixing ratio, total concentration and the molecular constitution of the components. In addition, it may be the case that the structures are formed under non-equilibrium situations and therefore depend on the preparation path. The binding is shown to occur cooperatively and the micelles present often retain their shape irrespective of the complexation. However, the rather stiff biopolyelectrolytes may lead to an interconnection between different aggregates thereby forming a network with the corresponding rheological properties. In general, the structure and the properties of the aggregates are rather versatile and correspondingly one can create a wide range of different surfactant-biopolyelectrolyte systems by appropriately choosing the composition. This is very interesting as it allows for formulations with a large range of tuneable properties with ecologically friendly polyelectrolytes for many relevant applications.

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“…This may be due to the ability of the polyelectrolyte to penetrate into the structure of the negatively charged bre, as has been observed for cotton 129 and hair. 112 …”

Section: 68120-127mentioning

confidence: 99%

Complexes of oppositely charged polyelectrolytes and surfactants – recent developments in the field of biologically derived polyelectrolytes

2013

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“…Interestingly, the isoelectric point of human hair has been reported to be near 3.7 (Wilkerson 1935;Regismond et al 1999), indicating that hair possesses a net negative surface charge under most hair treatment conditions. Thus, because electrostatic interactions are believed to play a signifi cant role in hair adsorption mechanisms, we expected that the positively charged SPB peptide would easily adsorb onto the hair surface, while the negatively charged KP peptide would not.…”

Section: Engineered Peptidesmentioning

confidence: 99%

Protein disulphide isomerase-mediated grafting of cysteine-containing peptides onto over-bleached hair

Fernandes

Cavaco‐Paulo

2011

Biocatalysis and Biotransformation

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The ability of Protein disulphide isomerase (PDI) to promote the grafting of two cysteine-containing peptides onto hair was investigated in order to develop an alternative treatment for over-bleached hair. The studied peptides were designed based on human keratin and human lung surfactant proteins and were linked to a fl uorescent dye to facilitate visualisation of the grafting process and to assess hair penetration. The ability of the peptides to restore mechanical and thermal properties lost by repeated bleaching treatments was also studied. After eight bleaching treatments, hair samples displayed 42% less mechanical resistance, coupled with a decrease in α -helix denaturation enthalpies and temperatures. Hair surface damage following bleaching was visualized by scanning electron microscopy. Addition of PDI to the treatment formulations promoted peptide attachment to the hair via disulphide bonds, facilitating their penetration into the hair cortex, as observed by fl uorescence microscopy. The proposed peptide treatment resulted in an increase in α -helix denaturation enthalpy in over-bleached hair, as well as an increase in both Young ' s modulus and tensile strength. Thus, mechanical and thermal properties were improved after the peptide treatment in the presence of PDI; suggesting that the formulations presented in this work are promising candidates for hair-care applications.

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“…NaCl was purchased from Fisher Scientific (Fair Lawn, NJ). Cationic polyelectrolyte quaternized hydroxyethylcellulose ethoxylate (QHEC) was purchased from Sigma-Aldrich (St. Louis, MO, USA), with a molecular weight between 400,000 and 500,000, cationic substitution of about 5 wt% and charge density of 1.2 mEq g −1 (Dalvi & Dave, 2009;Junka, Sundman, Salmi, Österberg, & Laine, 2014;Frenzel, Swaboda, Petzold, Emmler, & Simon, 2011;Regismond, Heng, Goddard, & Winnik, 1999). All materials were used without further purification.…”

Section: Methodsmentioning

confidence: 99%

Electrolyte effect on gelation behavior of oppositely charged nanocrystalline cellulose and polyelectrolyte

Song

Boluk

2014

Carbohydrate Polymers

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Fluorescence Microscopy Observation of the Adsorption onto Hair of a Fluorescently Labeled Cationic Cellulose Ether

Cited by 28 publications

References 10 publications

Complexes of oppositely charged polyelectrolytes and surfactants – recent developments in the field of biologically derived polyelectrolytes

Complexes of oppositely charged polyelectrolytes and surfactants – recent developments in the field of biologically derived polyelectrolytes

Protein disulphide isomerase-mediated grafting of cysteine-containing peptides onto over-bleached hair

Electrolyte effect on gelation behavior of oppositely charged nanocrystalline cellulose and polyelectrolyte

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