Thickening properties and emulsification mechanisms of new derivatives of polysaccharide in aqueous solution

Akiyama, Takahiko; Yamamoto, Takamasa; Yago, Yuuko; Hotta, Hajime; Ihara, Takeshi; Kitsuki, Tomohito

doi:10.1016/j.jcis.2007.03.009

Cited by 24 publications

(10 citation statements)

References 22 publications

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“…70 The properties of modified cellulose are determined by the type of substitution, the degree of polymerization (DP) of the cellulose chains, and the degree of substitution (DS) with functional groups. 71 For example, the abovementioned cellulose ethers are soluble in cold water, and CMC is also soluble in hot water.…”

Section: Amphiphilic Surfactantsmentioning

confidence: 99%

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Strategies for structuring diverse emulsion systems by using wood lignocellulose-derived stabilizers

Mikkonen

2020

Green Chem.

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Wood biomass is an abundant renewable source of materials, but due to the accelerating depletion of natural resources, it is important to explore new ways to use it in a more sustainable manner. Modern technologies enable the recovery and valorization of the main components of wood-namely, cellulose, lignin, and hemicelluloses-contributing to sustainability. However, the method of isolation and resulting structure and purity of lignocellulosic materials determine their functionality and applicability. This review discusses the properties of all three main wood-based compounds that can stabilize emulsions, a class of industrial dispersions that are widely used in life science applications and chemicals. Due to the multibillion-dollar annual market for hydrocolloids, the food, pharmaceutical, cosmetic, coating, and paint industries are actively seeking new sustainable emulsion stabilizers that fulfill the demanding requirements regarding safety and functionality. Wood-derived stabilizers facilitate various mechanisms involved in emulsion stabilization: (1) development of amphiphilic structures that decrease interfacial tension, (2) stabilization of interfaces by particles according to the Pickering theory, and (3) increase in the viscosity of emulsions' continuous phase. This review presents pathways for treating cellulose, lignin, and hemicelluloses to achieve efficient stabilization and provides suggestions for their broad use in emulsions.

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Section: Amphiphilic Surfactantsmentioning

confidence: 99%

“…18 The stabilizing capacity of other cellulose derivatives results from combined effects of interfacial activity and viscosity increase. 71,75 5. Potential of lignocellulosic stabilizers…”

Section: Control Over the Viscosity Of The Continuous Phasementioning

confidence: 99%

Strategies for structuring diverse emulsion systems by using wood lignocellulose-derived stabilizers

Mikkonen

2020

Green Chem.

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“…The effect of amount of SA on the viscosity and light transmittance of the emulsion can be attributed to intermolecular aggregation induced by hydrophobic‐electrostatic interactions. In aqueous emulsions, the hydrophobes induced self assembly into aggregates comparable to surfactant micelles and the hydrophobes act as transient junctions and connect different aggregates depending on their concentration . With low amount of SA, the emulsions showed low level of aggregation of alkyl groups, which is assumed to cause substantial reduce in their viscosity .…”

Section: Resultsmentioning

confidence: 99%

Properties of powdered associative alkali‐swellable acrylics thickeners synthesized by precipitation polymerization

Wang

et al. 2014

J of Applied Polymer Sci

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Powdered alkali‐swellable acrylics thickener (ASAT) was synthesized by precipitation polymerization with acrylic acid (AA) and stearyl acrylate (SA) as monomer, allyl sucrose ether (ASE) as crosslink agent and lauroyl peroxide (LPO) as initiator in the solvent of ethyl acetate. The powders were normal distribution in the range 1–80 μm and showed sensitive to pH in water. Before pH 7, both of the viscosity and the light transmittance of the APAT emulsion increased with enhancing pH value. ASE and SA played an important role in the properties of ASAT. When the amount of ASE was increased, the crosslink degree in the ASAT molecule increased. As the result, the viscosity of its emulsion increased firstly and then decreased, but the light transmittance of the emulsion decreased monotonously. Introduction of SA led to formation of an associative ASAT. Therefore, both of the viscosity and light transmittance of ASAT emulsion increased firstly and then decrease with increasing the amount of SA. Meanwhile, the associative ASAT emulsion showed shear thinning behavior, good salt tolerate, and less sensitivity to temperature. © 2014 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2014, 131, 40512.

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“…As a typical oil displacement agent, amphiphilic polymers display good thickening capability and surfactivity, both of which help to enable the formation of stable O/W emulsions. [9][10][11][12][13] There are a small amount of branched hydrophobic chains on the hydrophilic main chain of the amphiphilic polymers. 14,15 The presence of hydrophobic groups enables the capability for amphiphilic polymer in lowering the oil-water interfacial tension and emulsifying crude oil.…”

Section: Introductionmentioning

confidence: 99%

“…[16][17][18] One approach is to synthesize the polymers either with or without hydrophobic moieties, followed by comparison of their emulsication properties. 11,[18][19][20] Nevertheless, it is difficult to guarantee that the molecular structures of two kinds of polymer are exactly the same except for the hydrophobic modication. Another approach is to introduce an additive such as surfactants, 21 which could weaken the effect of the hydrophobic groups.…”

Section: Introductionmentioning

confidence: 99%

Study on the stabilization mechanism of crude oil emulsion with an amphiphilic polymer using the β-cyclodextrin inclusion method

Kang

Jiang

et al. 2017

RSC Adv.

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Thickening properties and emulsification mechanisms of new derivatives of polysaccharide in aqueous solution

Cited by 24 publications

References 22 publications

Strategies for structuring diverse emulsion systems by using wood lignocellulose-derived stabilizers

Strategies for structuring diverse emulsion systems by using wood lignocellulose-derived stabilizers

Properties of powdered associative alkali‐swellable acrylics thickeners synthesized by precipitation polymerization

Study on the stabilization mechanism of crude oil emulsion with an amphiphilic polymer using the β-cyclodextrin inclusion method

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