• 대한화장품학회지
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• 제49권3호
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• pp.247-258
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• 2023

본 연구는 덱스트린팔미테이트와 아이소프로필티타늄트라이아이소스테아레이트 코팅 기재를 티타늄다이이옥사이드에 복합화하여 내수성 향상과 피부와의 밀착력 개선에 관한 것이다. 최근 야외 활동을 즐기는 소비자의 증가로 내수성이 우수한 자외선 차단제에 대한 수요가 늘고 있다. O/W, 피커링, W/O/W 멀티플 제형으로 선행 연구가 진행되었으나, 내수성에 한계가 있었다. 본 연구에서는 이러한 문제를 해결하기 위해 내수성 향상 및 피부와의 밀착력을 높일 수 있는 복합 무기 분체를 개발하는 것이 목적이다. 우선 덱스트린팔미테이트와 아이소프로필티타늄트라이아이소스테아레이트 코팅 기재를 이용하여 티타늄다이옥사이드를 복합화시켰다. 무기 분체의 코팅은 FE-SEM과 FT-IR을 이용하여 확인하였다. 복합체의 in vitro내수성은 월등히 높았다. 코팅된 무기 분체의 소수성은 접촉각을 측정하여 비교하였다. 코팅된 무기 분체를 W/O 선크림 제형에 적용하고 대조군으로 코팅되지 않은 무기 분체를 W/O 선크림 제형에 적용했을 때 코팅된 무기 분체가 들어있는 선크림의 SPF가 더 크게 나타났다. 이러한 결과는 UV 카메라로 관찰했을 때도 같은 결과를 나타냈다. 마지막으로 코팅된 무기 분체의 피부 밀착력은 파운데이션 제품에 적용하여 확인하였다. In vivo연구에서 코팅되지 않은 무기 분체를 사용한 파운데이션 제품보다도 코팅된 무기 분체를 적용한 제품에서 묻어남이 적게 나타났다. 본 연구를 통해 개발된 무기 분체는 피부와의 밀착력이 우수한 사용감과 소수성이 향상된 뛰어난 내수성 효과를 보여주었다. 향후 본 연구는 내수성 향상을 위한 다양한 자외선 차단제 제품 개발에 도움이 될 것으로 기대된다.

• 한국응용과학기술학회지
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• 제7권2호
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• pp.63-69
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• 1990

(2,3-Dibromopropyl) phenyl lauroyl phosphate[DPPL] was synthesized by adding lauric acid to (2,3-dibromopropyl)chloro phenyl phosphate [DPP]. which prepared from phenyl phosphoric acid dichloride with 2,3-dibromo propyl alcohol. Flame retardants of DPPF and DPPLF were prepared respectively. DPPF was a water soluble flame retardant, and DPPLF was o/w type emulsion flame retardant. After flame retardant treating two kinds of flame retardants to the various synthetic fabrics respectively. the flame retardancy and tear strength were measured. As the results of the measurement. DPPF had only name retardancy, but DPPLF had both of flame retardancy and softness.

• 한국에너지공학회:학술대회논문집
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• 한국에너지공학회 1998년도 추계 학술발표회 논문집
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• pp.134-137
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• 1998

표면처리 한 UF 막으로 오일/물 에멀젼과 오일-SDS/물 어멜젼을 한외여과 시험하였다. 고분자와 계면활성제를 polysulfon막에 흡착시켜 표면을 처리하였다. 오일-SDS/물 에멀젼의 한외여과는 SDS양을 변화시키면서 수행하였다. 다양한 표면처리 한 막으로 한외여과 실험을 회분식 실험방법으로 수행하였다. 표면처리 안한 막에 대한 오일 에멀젼 한외여과시 fouling의 주요 원인이 오일 에멀젼의 흡착이며, 막의 표면처리와 오일 에멀젼에 계면활성제의 주입으로 뚜렷한 fouling의 저감효과가 있었다.

• 한국식품조리과학회지
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• 제23권1호통권97호
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• pp.19-24
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• 2007

This study investigated the antioxidant and synergistic effects and nitrite scavenging ability of some phenolic compounds(catechin, rutin, quercetin and naringin), The electron donating abilities of naringin, quercetin, rutin and catechin were 6.7%, 92.8%, 87.6% and 92.21%, respectively, The antioxidant activities in O/W emulsion substrates were in order of rutin > quercetin > catechin > naringin. The antioxidant effect of rutin was stranger than that of BHT or ${\alpha}$-tocopherol. ${\alpha}$-tocopherol showed synergistic effect with catechin and quercetin, but ascorbic acid not showed effect. The nitrite scavenging abilities of catechin, quercetin, rutin and naringin were 99.9%, 98.6%, 25.5% and 0.2%, respectively. The nitrite scavenging abilities of quercetin and actechin were very potent as compared with those of BHT and ascorbic acid.

• 한국연소학회:학술대회논문집
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• 한국연소학회 1998년도 제17회 KOSCI SYMPOSIUM 논문집
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• pp.103-110
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• 1998

This experiment is performed to investigate the effects of the emulsion on the flame temperature and soot formation in a diesel engine. The two-color method is used to measure the flame temperature for combustion of emulsified diesel in the Rapid Compression and Expansion Machine(RCEM). The concentration of soot is estimated via calculation of the KL factor. The solenoid valve, elecronic controller and needle lift sensor are used to control the exact injection timing and duration under various operating conditions. According to the results the soot concentration is reduced with the increasing W/O while the temperature reduced. The pressure data and the flame images captured by a high speed camera show that the ignition delay of emulsified diesel increase the duration of premixed combustion. The sizes of water drops are measured to be about 10${\mu}m$ by a microscope.

• 한국응용과학기술학회지
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• 제12권1호
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• pp.87-92
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• 1995

To prepare a O/W type durable softner(OESA), octadecamidoethylaminoethyl dodecate and tetra (2-dodecamidoethyl) urea synthesized as the main components of softner, were blended with polyoxyethylene(20) oleyl ether, sorbitan sesquioleate, and polyoxyethylene(7) stearyl ether in various compositions. Emulsion stability of OESA was good, and mixed HLB value was 9.7, OESA was found was to be good durable softner for nylon through the examination of softness, lubriation, antistatic property, bending resistance, and color fastness.

• 한국응용과학기술학회지
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• 제33권4호
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• pp.667-675
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• 2016

Nanoemulsions are actively used in several applications for pharmaceutical, cosmetic and chemical industries. In this study, we propose the use of microfluidizer known as high pressure homogenizer to prepare lipid nanoemulsion as a potent cosmetic delivery carrier. The lipid nanoemulsions were prepared by O/W emulsion with hydrogenated lecithin and different type of oils. Effects of oil type on the stability of the lipid nanoemulsion were investigated with Dynamic Light Scattering (DLS) and Zeta-potential. Arbutin was used as model drug for transdermal administration through hairless mouse skin. Transdermal arbutin delivery using the lipid nanoemulsions was studied with HPLC method.

• 대한화장품학회:학술대회논문집
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• 대한화장품학회 2003년도 IFSCC Conference Proceeding Book II
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• pp.219-238
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• 2003

Indole-3-acetic acid (IAA) molecule has been successfully encapsulated in biocompatible inorganic matrix in order for the cosmetic application such as superfacial fine line reduction. The encapsulation was realized through chemical reaction involving simultaneous formation of inorganic lattice and 1M giving rise to an 1M-inorganic nanohybrid (IAA-brid) which shows excellent storage stability and sustained releasing property of indole-3-acetic acid. The clinical efficacy of essence cream containing IAA-brid as anti-wrinkle formulation was also carefully evaluated by measuring the roughness of the skin replica before and after treatment. Upon administration of the cream on the eye-area, the fine-line is drastically reduced.

• 한국응용과학기술학회지
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• 제15권1호
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• pp.17-23
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• 1998

To prepare a O/W type nonionic durable softner(ANSA), synthesized 1, 3-dihexadanoyl-2, 7-dioxy-6, 8-di(2-hexadecanoyloxyethyl)-1, 3, 6, 8-tetraazacyclodecane as the main component of softner, was blended with beef tallow, anhydrous lanolin, polyoxyethylene(20) oleyl ether, sorbitan sesquioleate, and polyoxyethylene(7) stearyl ether in various compositions. Emulsion stability of ANSA was good, and the mixed HLB value was 9.8. After the treatment of ANSA to all cotton fabrics, the physical properties such as tear strength, crease recovery, and flexing abrasion resistance were measured, respectively. As a result of the measurement, ANSA was proved to be durable softner with good softness.

• 대한화장품학회:학술대회논문집
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• 대한화장품학회 2003년도 IFSCC Conference Proceeding Book I
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• pp.617-629
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• 2003

A recent development in cosmetics has been the pursuit of wrinkling in the skin. The cosmetics composed of anti-wrinkle agent stand out from the point of view of environmental contamination and pollution. Among them, Indole-3-acetic acid (IAA), studied with wrinkling pigmentation and swelling conditions in the area of the eye, showed clinically significant reduction in depth of lines during one month trial using skin treatment. But, IAA has shown some problems when used in cosmetic formulations, such as stability, permeability and toxicity. The results of the clinical examination were shown that its permeability and toxicity didn't matter. To increase the stability of IAA, antioxidants such as Licorice, ubiquinone, tocopherol, Baicalin, ferulic acid, BHT, ascorbic acid, sodium metabisulfite, and so on were employed in cosmetic formulations. Our main purpose is the study for the stability efficiency and effect of each other of cream formulations containing optimal dosage antioxidants (o/w type emulsion), This study evaluated wrinkle reduction effect of IAA, which is used in cosmetics.