Composition optimization of poly(vinyl alcohol)‐/cornstarch‐blended biodegradable composite using response surface methodology |
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| Authors: | Ying‐Da Chen Jinchyau Peng Wai‐Bun Lui |
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| Affiliation: | 1. Department of Bio‐Industrial Mechatronics Engineering, National Chung‐Hsing University, Taichung, Taiwan, Republic of China;2. Department of Agricultural Machinery, National Pei‐Kang Senior Agricultural‐Industrial Vocational School, Yunlin, Taiwan, Republic of China |
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| Abstract: | Response surface methodology was used to analyze the effect of amylase level (X1) and glycerol level (X2) on the objective [water solubility index (WSI), water absorption index (WAI), and Max. loading] attributes of a poly(vinyl alcohol)‐/cornstarch‐blended composite. A rotable central‐composite design (CCD) was used to develop models for the objective responses. The experiments were run at die temperature 100°C with a feed rate of 25 g/min and a screw speed of 35 rpm. Responses were most affected by changes in the amylase level (X1) and to a lesser extent by glycerol level (X2). Individual contour plots of the different responses were overlaid, and regions meeting the optimum WSI of 3.03 (%), WAI of 5.08 (g gel/g dry wt), and Max. loading of 29.36 (N) were identified at the amylase level of 2.8 (mL) and the glycerol level of 92.2 (mL), respectively. © 2009 Wiley Periodicals, Inc. J Appl Polym Sci, 2009 |
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| Keywords: | biodegradable amylase glycerol composite optimization |
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