Evaluation of novel synthetic conditioning polymers for shampoos

Abstract

developed aiming to provide an effective barrier function for hair dye from dissolving into water. The preliminary investigation of a series of polymers with various functional groups indicates that polymers with hydrophobically modified and cationic functionalities are most effective in preventing hair dye dissolution in water. It is also evident that a synergistic effect of the polymer's hydrophobic moieties and cationic charges are important on hair color protection during shampoo washing processes. A primary example of a polymer within this category is a cationic terpolymer of vinylpyrrolidone, dimethylaminopropyl methacrylamide, and methacryloylaminopropyl lauryldimonium chloride (INCI: Polyquaternium-55). The color protection benefit of this polymer is evaluated using newly developed methodologies for evaluating hair color changes, such as hair color fading tests through multiple shampoo washes with mannequin heads and hair tresses, both derived from human hair, colorimetry, and quantitative digital image analysis. In addition, new infrared spectroscopic imaging techniques are used to detect the hair dye deposition behavior inside hair fibers both with and without the color protection treatment. Both visual and instrumental measurement results indicate that Polyquaternium-55 provides a high level of color protection when formulated in a hair color protection regimen with up to 50% color protection. This regimen significantly outperforms commercial products that were tested containing a color protection claim. The proposed mechanism for the anti-fading action of hydrophobically modified polymers includes a cationic charge-reinforced hydrophobic barrier. This model is supported by evaluating the color fastness effect of several different polymer chemistries and by measuring hair surface hydrophobicity changes. SynopsisCationic polymers have traditionally been used in shampoo formulations to impart conditioning properties to hair. In this study, commercial synthetic cationic polymers were investigated using coacervate formation, objective wet comb analysis, silicone deposition and panel studies to determine structure function properties with the goal of developing novel conditioning polymers. New polymers were synthesized and, based on criteria determined in the first part of the study, found to have marginal improvement over existing synthetic cationic conditioning polymers. A novel experimental polymer developed for a different industry was also investigated for conditioning properties. This polymer showed significant enhancement of silicone deposition over current commercial polymers, including cationic guar, even at significantly reduced silicone and polymer concentrations. The experimental polymer exhibited parity or improvement over benchmark polymers in panel studies, and similar performance to other synthetic polymers in objective wet comb studies. SynopsisPolymer composite principles are shown to explain the mechanism and performance of fixative-treated hair tresses. This concept is illustrated using ...

Design of eco-friendly fabric softeners: Structure, rheology and interaction with cellulose nanocrystals

“…HP-Guar is widely used in oil and gas recovery, paints, cosmetics and biology [24] as a thickening and lubricant agent [25,26]. Cationic guar is known for its conditioning properties, notably on hair [27][28][29]. They were obtained by introducing positively charged trimethylamino(2-hydroxyl)propyl into the backbone.…”

Physicochemical Aspects of the Performance of Hair-Conditioning Formulations

“…Cosmetics 2020, 7, x FOR PEER REVIEW 15 of 20 the hair drives the system into the phase-separation region, which results in an enhanced deposition of the conditioning material onto the fiber surfaces. Such deposition is the result of the precipitation of the complexes which favors foaming and enhances the lubrication property of fibers and the adsorption of colloidal materials such as silicone emulsions, impacting consumer satisfaction [105,106]. Figure 9 shows the two approaches commonly used for studying the behavior of polyelectrolyte-surfactant mixtures.…”

Creation of New Functions by Combination of Surfactant and Polymer - Complex Coacervation with Oppositely Charged Polymer and Surfactant for Shampoo and Body Wash -

“…Mixing other surfactants reduces the anionic charge of AES in the composition and affects the coacervation region. On the other hand, cationic polymers used for shampoo are cationized cellulose Polyquartanium-10 , cationized guar gum 12,35 , and synthetic polymers such as a homopolymer of DADMAC PDADMAC, Polyquartanium-6 , copolymers with DADMAC and acrylamide Polyquartanium-7 36 , and the like. A number of novel synthetic cationic polymers have been developed in order to expand application functions 37 .…”

“…Goddard et al 7 proposed this change in the dissolved state of complexes as a dilution-deposition system. It has also been reported that the precipitated complexes possess functions such as the increase of bubbles 8 10 , reduction of frictional force 11,12 , and adsorption promotion of dispersed colloids like silicone emulsion on hair 12 14 . The precipitated complexes greatly influence the feeling during rinsing and the finish after drying, which are directly recognized by consumers 13,15,16 .…”