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Synthesis of chitosan/TiO_2 nanocomposite for antibacterial sunscreen application

机译：壳聚糖/ TiO_2纳米复合材料合成抗菌防晒应用

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Several problems that often occur on the skin are acne and sunburn due to UV exposure. Acne is caused by the activity of bacteria dwelling on the surface of skin. This study has successfully synthesized several multifunctional cream based on chitosan loading in the chitosan/TiO_2 nanocomposite. Multifunctional sunscreen defined by anti-bacterial and sunscreens performance with photocatalytic technology. Multifunctional sunscreen is made by Chitosan/TiO_2 nanocomposite as active ingredient. Nanocomposite which has been synthesized is characterized by FT-IR, UV-Vis DRS, and SEM-EDX. To make Multifunctional sunscreen, the nanocomposite chitosan/TiO_2 as active ingredient is mixed with water and carboxymethyl cellulose (CMC) as natural emulsifier. The result of testing the disinfection of bacteria Escheria coli by nanocomposite chitosan/TiO_2 showed the bacteria can be eliminated up to 99.7% within 2 hours. As sunscreens, creams have the ability to moderate protection under UV rays with SPF values from 21.30 to 22.77.
机译：由于UV暴露，皮肤上经常发生的几个问题是痤疮和晒伤。痤疮是由皮肤表面居住的细菌的活性引起的。该研究成功地基于壳聚糖/ TiO_2纳米复合材料中基于壳聚糖负载的几种多功能乳膏。用光催化技术进行抗菌和防晒性能定义多功能防晒。多功能防晒剂由壳聚糖/ TiO_2纳米复合材料作为活性成分制成。已经合成的纳米复合材料的特征在于FT-IR，UV-Vis DRS和SEM-EDX。为了使多功能防晒，作为活性成分的纳米复合壳聚糖/ TiO_2与水和羧甲基纤维素（CMC）混合为天然乳化剂。通过纳米复合壳聚糖/ TiO_2测试细菌大肠杆菌的消毒结果表明细菌可以在2小时内消除高达99.7％的细菌。作为防晒霜，乳膏能够在紫外线下进行适度的保护，SPF值从21.30到22.77。

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