Numerical simulation of coil-helix transition processes of gelatin

doi:10.1016/j.polymer.2009.02.039

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	Numerical simulation of coil-helix transition processes of gelatin
	Chen, Xiliang 1; Jia, Yuxi 1; Feng, Ligang 1; Sun, Sheng 1; An, Lijia 2
刊名	POLYMER
	2009-04-24
卷号	50 期号:9 页码:2181-2189
关键词	Structural Inhomogeneity Crosslinking Density Helix Length
ISSN号	0032-3861
DOI	10.1016/j.polymer.2009.02.039
英文摘要	Gelatin is widely used in food, pharmaceutical, and photographic industries due to the coil-helix transition, whereas the structural inhomogeneity considerably affects its essential properties closely connecting with the industrial applications. The spatially structural inhomogeneity of the gelatin caused by the uneven and unstable temperature field is analyzed by the finite element method during the cooling-induced coil-helix transition process. The helix conversion and the crosslinking density as functions of time and spatial grid are calculated by the incremental method. A length distribution density function is introduced to describe the continuous length distributions of two kinds of triple helices. The results show that the crosslinking density and the length distribution of triple helices are dependent on the thermal histories. And the spatially structural inhomogeneity is more distinct when the initial gelatin concentration and the convective heat transfer coefficient increase. The present work is helpful for optimizing the fabrication conditions of gelatin. (C) 2009 Elsevier Ltd. All rights reserved.
语种	英语
出版者	ELSEVIER SCI LTD
WOS记录号	WOS:000265433700024
内容类型	期刊论文
源URL	[http://ir.iccas.ac.cn/handle/121111/67455]
专题	中国科学院化学研究所
通讯作者	Jia, Yuxi
作者单位	1.Shandong Univ, Sch Mat Sci & Engn, Jinan 250061, Peoples R China 2.Chinese Acad Sci, Changchun Inst Appl Chem, State Key Lab Polymer Phys & Chem, Changchun 130022, Peoples R China
推荐引用方式 GB/T 7714	Chen, Xiliang,Jia, Yuxi,Feng, Ligang,et al. Numerical simulation of coil-helix transition processes of gelatin[J]. POLYMER,2009,50(9):2181-2189.
APA	Chen, Xiliang,Jia, Yuxi,Feng, Ligang,Sun, Sheng,&An, Lijia.(2009).Numerical simulation of coil-helix transition processes of gelatin.POLYMER,50(9),2181-2189.
MLA	Chen, Xiliang,et al."Numerical simulation of coil-helix transition processes of gelatin".POLYMER 50.9(2009):2181-2189.