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Preparation and Application of Starch Microspheres in Cosmetics

Author: ZhuQiang
Tutor: SunQingYuan
School: Dalian University of Technology
Course: Biochemical Engineering
Keywords: starch microspheres inverse microemulsion adsorption roseperfume sustained release behave
CLC: TS236
Type: Master's thesis
Year: 2008
Downloads: 7
Quote: 0
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Abstract


Starch microspheres(SM) are preparation of biology, which are widely exist, easilydegradable, no contaminative material. It has protective effect for the functional materialwhen used in cosmetics, and also has the control-released ability when adsorption of materials. Itwill be more conducive to the related material in order to raise efficiency. In this study, starchmicro-spheres has important role in cosmetics.The starch microspheres were synthesized from soluble starch by inverse suspensionwith epichlorohydrin as the cross-linking agent, Span60as the emulsifying agent and theplant oil as the organic phase. The product was characterized by electron microscope. TheSM could be used as a control-released fragrance compounds which have a certain slowrelease properties. We focused on influences of synthesis condition on adsorption quantity ofstarch microspheres. The orthogonal experiment is made for optimizing the synthesiscondition with the adsorption as the target. We also studied on the absorption and releaseproperties of starch microspheres of rose perfume. Then studied the smoothing feeling andthe rate of water and residual moisture of starch microspheres.We studied influences of synthesis condition on adsorption quantity of starchmicrospheres. The result showed: The adsorption quantity of starch microspheres increasedwith the increased of dosage of surfactants, when dosage of surfactants is between0.05~0.1g;The quantity decreased with increased of dosage of surfactants, when dosage of surfactants isbetween0.1~0.125g; The quantity increased with increased of dosage of surfactants, whendosage of surfactants is more than0.125g. The adsorption quantity of starch microspheresincreased with the increased of starch solution, when starch solution is less than7%; Thequantity decreased with increased of starch solution, when starch solution is more than7%.The adsorption quantity of starch microspheres increased with the increased of dosage of oilphase, when dosage of oil phase is less than70mL; The quantity decreased with increased ofdosage of oil phase, when dosage of oil phase is more than70mL. The adsorption quantity ofstarch microspheres increased with the increased of dosage of crosslinking agent, when dosage of crosslinking agent is less than3.0mL; The quantity decreased with increased ofdosage of crosslinking agent, when dosage of crosslinking agent is more than3.0mL. Theadsorption quantity of starch microspheres increased with the increased of stirring speed,when stirring speed is less than1700rad/min; The quantity decreased with increased ofstirring speed, when stirring speed is more than1800rad/min.Influences degree of synthesiscondition on adsorption quantity of starch microspheres: starch solution>dosage ofcrosslinking agent>dosage of surfactants>dosage of oil>stirring speed phase; optimumconditions for synthesizing starch micro-spheres: starch solution5%, dosage of oil phase75mL, dosage of surfactants0.08g, dosage of crosslinking agent4.7mL, stirring speed1200rad/min.When the rose perfume under the conditions of40%,1.5h,45℃.The absorption was0.798g/g. Research from ultraviolet spectrophotometry showed that fragrance contentdecreased with the time, so was the release rate. Then study the smoothing feeling and therate of water and residual moisture rate of sustained-release Starch micro-spheres.The research showed that the starch microspheres had strong adsorption of perfume, andsustained release to become a good cosmetic carrier.

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CLC: > Industrial Technology > Light industry,handicrafts > Food Industry > Starch Industry > Starch processing products
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