Please use this identifier to cite or link to this item: http://hdl.handle.net/11455/50232
標題: Physical, mechanical, biodegradable properties and energy absorption behavior of corn grit-polyvinyl alcohol cushioning extrudates
作者: Lui, W.B.
彭錦樵
Peng, J.Y.
關鍵字: extrusion;corn grit;PVA;biodegradation;packaging cushion;brittle starch foams;amylose content
Project: Journal of Food Engineering
期刊/報告no:: Journal of Food Engineering, Volume 71, Issue 1, Page(s) 73-84.
摘要: 
The focus of the study was on the effects of PVA ratio (PR), screw speed (SS) and die temperature (DT) on the physical, mechanical, biodegradable properties and energy absorption behavior of corn grit/PVA cushioning extrudates. The experimental results indicated that PR had a significant effect on the radial expansion ratio, bulk density, compressibility. spring index and biodegradable properties. SS had a significant effect on the radial expansion ratio, compressibility, spring index, biodegradable properties and the radial expansion ratio. DT had a most significant effect on the compressibility and spring index of the extrudates. Corn grit blended with 5% of PVA had the minimum total energy absorption (TEA) and energy absorption of each cycle (EAEC). All treatments of the extrudates had the maximum energy absorption at the crosshead speed 400 mm/min. The resultant extrudates were suitable for packaging applications especially cushioning materials. (c) 2004 Elsevier Ltd. All rights reserved.
URI: http://hdl.handle.net/11455/50232
ISSN: 0260-8774
DOI: 10.1016/j.jfoodeng.2004.10.021
Appears in Collections:生物產業機電工程學系

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