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摘要
MBBT(亚甲基双-苯并三唑基四甲基丁基酚)是一种具有良好应用前景的广谱防晒剂。然而,由于MBBT的粒径较大,紫外吸收效果差,在防晒领域的应用受到限制。将MBBT包覆在阳离子表面活性剂与硅烷偶联剂协同改性的凹凸棒石(ATP)表面,制备了ATP@MBBT广谱防晒剂。通过X射线衍射仪、红外光谱、差示量热,比表面积和透射电镜对所制备的产物进行表征,并将其应用于乳液配方中,通过紫外线透射仪分析乳液的紫外屏蔽性能。结果表明:MBBT在改性处理的ATP表面形成了均匀包覆膜,载体材料的引入降低了MBBT的结晶度和粒径。ATP@MBBT在波长290～380nm范围内显示了较好的广谱紫外防护效果,当添加量为10%(质量分数)时,UVB防晒系数(SPF)和UVA防晒指数(PFA)分别达到了13.53和PA+++。
Abstract
2,2′-methylene-(6-(2H-benzotriazole-2-group)-4-(1,1,3,3-tetramethyl-butyl) phenol)(MBBT) is a broad-spectrum sunscreen with great potential.However,MBBT has not been widely used in sunscreen due to its large particle size that leads to poorer UV absorption.MBBT was coated on the surface of attapulgite (ATP) pretreated by organic surface synergistic modification with cationic surfactant and silicone coulpe agent,then prepared ATP@MBBT broad-spectrum sunscreen.The prepared products were characterized by XRD,FT-IR,DSC,BET and TEM.Subsequently,ATP@MBBT was applied to a formulation and UV shielding properties of obtained emulsion were evaluated via an ultraviolet transmittance analyzer.The results showed that MBBT was encapsulated on the surface of modified ATP to assemble a core-shell structure.The introduction of ATP decreased the degree of crystallinity and the particle size of MBBT.ATP@MBBT showed a good broad-spectrum UV protection in the wavelength range of 290～380nm.When the addition amount was 10%,the sun protection factor of UVB (SPF) and the protection factor of UVA (PFA) were reached 13.53 and PA+++,respectively.
关键词
凹凸棒石
/
亚甲基双-苯并三唑基四甲基丁基酚
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广谱防晒剂
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紫外屏蔽性能
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有机紫外吸收剂
Key words
attapulgite
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MBBT
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broad-spectrum sunscreen
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UV shielding performance
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organic UV filter
纳米凹凸棒石@MBBT复合材料的制备及紫外屏蔽性能研究[J].
化工新型材料, 2018, 46(11): 137-141 DOI:
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基金资助
江苏省六大人才高峰”第十三批创新人才团队项目(XCL-CXTD-029)
