| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 7786408 | Carbohydrate Polymers | 2016 | 7 Pages |
Abstract
The effect of different ionic crosslinking parameters on the thickness, radiometric profiles, and mechanical and water vapor permeation (WVP) properties of alginate mulching films was investigated. Crosslinking by Mn2+, Zn2+, and Ca2+ (but not Al3+) increased the tensile strength and light transmission and decreased the WVP of the films. Among the films, those crosslinked by Ca2+ had the greatest tensile strength and exhibited the highest elongation and light transmission. Furthermore, the WVP and light transmission decreased gradually with increasing Ca2+ concentration, and the maximum tensile strength and elongation were obtained for 2% (w/v) of Ca2+. However, the WVP of the films increased gradually with increasing crosslinking time, and the elongation saturated after 2Â min. These results suggest that alginate films crosslinked by 2% (w/v) calcium chloride for 2Â min had the best overall performance and therefore have the potential to be used as entirely biodegradable agricultural mulching films.
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Authors
Guo Liling, Zheng Di, Xu Jiachao, Gao Xin, Fu Xiaoting, Zhang Qing,