期刊
CARBOHYDRATE POLYMERS
卷 121, 期 -, 页码 155-162出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.carbpol.2014.12.040
关键词
Starch; Nanocrystal; Films; Tensile strength; Water vapor permeability; Thermal stability
资金
- Qingdao Municipal Science and Technology Plan Project [14-2-3-48-nsh]
To characterize the pea starch films reinforced with waxy maize starch nanocrystals, the mechanical, water vapor barrier and morphological properties of the composite films were investigated. The addition of starch nanocrystals increased the tensile strength of the composite films, and the value of tensile strength of the composite films was highest when starch nanocrystals content was 5% (w/w). The moisture content (%), water vapor permeability, and water-vapor transmission rate of the composite films significantly decreased as starch nanocrystals content increased. When their starch nanocrystals content was 1-5%, the starch nanocrystals dispersed homogeneously in the composite films, resulting in a relatively smooth and compact film surface and better thermal stability. However, when starch nanocrystals content was more than 7%, the starch nanocrystals began to aggregate, which resulted in the surface of the composite films developing a longitudinal fibrous structure. (C) 2014 Elsevier Ltd. All rights reserved.
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