Characterization of alpha-tocopherol-loaded MCM-41 mesoporous silica with different pore sizes and antioxidant active packaging films

文献类型： 外文期刊

第一作者： Sun, Li-nan

作者： Sun, Li-nan;Lu, Li-xin;Pan, Liao;Qiu, Xiao-lin;Lu, Li-xin;Wang, Qing

作者机构：

关键词： active films; antioxidant packaging; controlled release; LDPE; MCM-41

期刊名称：PACKAGING TECHNOLOGY AND SCIENCE （ 影响因子：1.875； 五年影响因子：2.179 ）

ISSN： 0894-3214

年卷期：

页码：

收录情况： SCI

摘要： Antioxidant active packaging films were prepared with low-density polyethylene (LDPE) being incorporated with alpha-tocopherol-loaded MCM-41 mesoporous silica. In order to study the influence of pore size and morphology of the mesoporous material on physical and release properties of films, the mesoporous materials were synthesized with various pore sizes and morphologies. MCM-41 mesoporous silica materials before and after being loaded with alpha-tocopherol were characterized, as well as the active films. The results show that physical properties and release profiles of active films can be changed when being incorporated with mesoporous materials with different structures: crystallinity of films prepared ranged from 11.30% to 18.13%, and the tendency of change was in good accordance with that of specific surface area of mesoporous silica materials. Variation of release rates of the antioxidant in packaging films can be achieved by changing MCM-41 pore size, and the release period can be prolonged by similar to 64% in the scope of this study. These demonstrate that LDPE/alpha-tocopherol/MCM-41 films with adjustable release profile and physical properties have the potential to be used as antioxidant active packaging films.

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