Performance inhomogeneity of gelatin during gelation process

Performance inhomogeneity of gelatin during gelation process
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明胶在凝胶过程中的性能不均匀性

DOI:
10.1016/j.polymer.2009.10.027
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发表时间:
2009-11
期刊:
影响因子:
4.6
通讯作者:
--
中科院分区:
化学2区
文献类型:
--
作者:

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明胶凝胶结构和性能的不均匀性直接影响其作为功能材料的应用。在我们以前的工作中,我们已经用有限元方法分析了不均匀和不稳定的温度场引起的明胶的结构不均匀性。在此基础上,对与实际应用密切相关的明胶在凝胶化过程中的性能不均匀性进行了数值分析,包括明胶凝胶的光学性能和力学性能的不均匀性。展示和讨论了在不同的空间网格达到凝胶点所需的时间。计算结果还表明,明胶的平衡剪切模量与热历史有关。
The structural and performance inhomogeneities of gelatin gel can directly affect its application as a kind of functional material. The structural inhomogeneity of gelatin caused by the uneven and unstable temperature field has been analyzed by the finite element method in our previous work. Further in this paper, the performance inhomogeneity of gelatin which is closely connected with the actual application is numerically analyzed during the gelation process, which includes the inhomogeneities of the optical and mechanical properties of gelatin gels. The time required for reaching the gel point at different spatial grids is exhibited and discussed. The calculated results also show that the equilibrium shear modulus of gelatin is dependent on the thermal history.
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