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National Chung Hsing University Institutional Repository - NCHUIR > 農業暨自然資源學院 > 生物產業機電工程學系 > 依資料類型分類 > 期刊論文 >  Effects of operating conditions on degradable cushioning extrudate's cellular structure and the specific heat

Please use this identifier to cite or link to this item: http://nchuir.lib.nchu.edu.tw/handle/309270000/131366

標題: Effects of operating conditions on degradable cushioning extrudate's cellular structure and the specific heat
作者: Lui, W.B.;Peng, J.C.
關鍵字: cellular structure;cushioning extrudates;degradable;operating;conditions;thermal properties;brittle starch foams;mechanical-properties;corn starches
日期: 2005
Issue Date: 2012-12-07 16:23:17 (UTC+8)
關連: Journal of Food Engineering, Volume 70, Issue 2, Page(s) 171-182.
摘要: Generally, single-used foam packaging is used by manufacturers to protect and preserve a wide array of food and industrial products. Expanded polystyrene (EPS) is used extensively in single-use packages due to its low density, thermal insulation, strength and low cost (Alliance of Foam Packaging Recyclers (AFPR), 1999). The objective of this study is to focus on the process variables (feed composition, die temperature and screw speed) affecting the cellular structure and the thermal properties of extrudates and to evaluate com/PVA extrudate as packaging material. The experimental results indicated that the cell size became smaller and uniform; moreover, the cell wall thickness became thinner with the increase in die temperature and screw speed. Moreover, increasing the PVA ratio ranged from 5% to 30% also made the cell sizes became smaller and uniform. The corn granules blended with 15% PVA (Treatment 26) have potential applications as thermal insulation for their high specific heat values. The formulation with 15% PVA (Treatment 26) had the highest specific heat. For all formulations, the specific heat increased linearly as the temperature increased. (c) 2004 Elsevier Ltd. All rights reserved.
Relation: Journal of Food Engineering
Appears in Collections:[依資料類型分類] 期刊論文
[依教師分類] 彭錦樵

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