Vol.3 No.2 2010

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Research paper : Products and evaluation device of cosmetics for UV protection (Y. Takao et al.)−145−Synthesiology - English edition Vol.3 No.2 (2010) we extracted the issues such as the specific materials that do not violate the Japanese Standards of Cosmetic Ingredients (JSDI) to achieve the Type 2 Basic Research level. Next, the powder synthesis pilot plant was constructed at actual production level in 2003 using external budgets, and the technological element of section 3.1 was solved before the aforementioned social issues. After signing a research subcontract in 2007 with the material and product manufacturers, the relationships were adjusted for the product realization of the powder material scheduled for FY 2010[1][2][14]-[21].< Product realization plan of powder property evaluation device >Starting from the aforementioned material development, advancement in Type 1 Basic Research such as the idea for simple lubriciousness evaluation was obtained[2]. However, this was insufficient as Type 2 Basic Research that may provide quality control technology to other ceramic manufacturing and the design guideline for the material powder that provides high lubriciousness to the UV-protective cosmetics.In general, the evaluation technology, like the JIS and ISO standards, should be in the form of a platform with multiple channels to pursue universality, such as subcontracting by evaluation organizations, rather than exclusive use as in the material product that demands originality and scarcity. Historically, the organizational format such as a company is like a lottery collected every time before maritime voyage, and the risk is equivalent to a modern space exploration[12]. In the current challenging social situation, the public venture theory has been developed as a way to buffer such risks[6][7].Therefore, as shown in Fig. 6, using the AIST technology licensing organization system, we created a public venture[16] in 2005 to subcontract the lubriciousness evaluation and the development of the evaluation device. With this company as a window to the market, evaluation subcontracts were obtained routinely from several companies, and the product realization issues, such as obtaining the evaluation parameters lacking in the quality control technology, were clarified to achieve the Type 2 Basic Research level. As a result, among the technological elements described in section 3.1 including (1) high UV protection, (2) high visible light transmissivity, and (3) high lubriciousness, we were able to provide the design guideline to improve the lubriciousness of the material powder. At the same time, the accomplished fact that this was an evaluation method for the material design at the product realization level increased the social reliability of the evaluation device, and resulted in the adjustment of relationship where the device could be marketed widely and the orders for the device development be encouraged in the FY 2010[1][2][14]-[21].4 Research result and discussion4.1 Ordered mixture to resolve the nanoparticle segregation and the achievement of both UV protection and visible light transmissivityThe results of controlling the inter-particle segregation of the nanoparticles and synthesizing the composite particle (ordered mixture) where the nanoparticles are adsorbed only onto the surface of sericite[15], the cosmetic ceramic unit, are shown in the transmission electron microscope image in Fig. 9(a) and as the energy dispersive X-ray spectrometry map in Fig. 9(b)~(c). The spherical nanoparticles adhere finely and evenly on the surface of the planar sericite on both the top and edge faces of the cuboid. The nanoparticles are observed only on the unit surface, and the segregation between the particles is controlled[1].Figures 7(a)~(c) show the results where the coating of the composite particles are morphologically controlled, and Fig. 7(d) shows the mica grains. The composite particle was created by depositing the titania on the surface of the ceramic unit particle in (a) particulate form, (b) film (the photograph shows the broken section of the film to present a clear view), and (c) needle form. The nanoparticles can be also coated in controlled uneven state on the top or edge facet only of the planar ceramic unit particle[1][2][14]-[21].Figure 7(d) shows the solid grain of the ceramic unit (mica) particle. Other than these, different planar ceramic unit Fig. 9 Technological result: Realization of the “ordered mixture” state (resolved the issue nanoparticle segregation)(a) TEM image: There is no titania nanoparticle that separated from the mica (embedded grinding).(b) WDS surface analysis result: The planar particle in the center is mica, and the surrounding spherical particles are titania.(c) EDS linear analysis result: Titania nanoparticles are composited evenly around the mica.Linear analysisTitania TiO2Titania TiO2(c)(a)(b)500 nm

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