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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