Temperature dependence of electric conductivity of bamboo coral skeleton and glass sponge spicules, the marine origin biomaterials
Temperature dependence of electric conductivity of bamboo coral skeleton and glass sponge spicules, the marine origin biomaterials
复制标题
海洋生物材料竹珊瑚骨架和玻璃海绵针的电导率的温度依赖性
DOI：
10.1016/j.jnoncrysol.2007.02.080
复制
发表时间：
2007
影响因子：
3.5
通讯作者：
Ehrlich H
中科院分区：
文献类型：
--
作者：
Kubisz L;Ehrlich H
海洋来源的天然结构生物材料，包括珊瑚和海绵，为新型骨和软骨替代物提供了丰富的来源。尽管这些天然生物复合材料的机械和光学性能已在文献中得到广泛的处理，但没有关于其电性能的可用数据。本文确定了电荷传导过程的电导率沿着焓的变化规律。天然和脱蛋白的海绵骨针以及竹珊瑚矿物相的电导率-温度（σ-T）特性为胶原蛋白的释水和相变过程提供了信息。珊瑚的变性温度为203°C。天然玻璃海绵骨针在160° C和195°C处的峰可以通过更复杂的变性过程来解释，其中可能是胶原蛋白的较不有序区域在较低温度下变性，而高结晶度区域在较高温度下变性。玻璃海绵骨针脱蛋白后观察到的电导率下降表明，天然玻璃海绵骨针中的电荷可能是沿着胶原形成的路径传输的。脱蛋白也改变了σ-T特性，140°C的扭结是由胶原的玻璃化转变引起的，而175°C的峰可能是由结构扰动的残余胶原的热变性引起的。
Natural structural biomaterials of marine origin including corals and sponges provide an abundant source of novel bone and cartilage replacements. Even though mechanical and optical properties of these natural biocomposites have been treated extensively in the literature, there is no available data on their electric properties. In the paper electric conductivity along with enthalpy of the process of electric charge conduction process were determined. The conductivity–temperature (σ–T) characteristics of native and deproteinated spicules of marine glass sponge and the mineral phase of bamboo corals provide information on the process of water release and phase transition in collagen. Denaturation temperature for coral was found at 203°C. The peaks at 160° and 195°C for the native glass sponge spicules may be explained by more complicated denaturation process where probably, less ordered regions of collagen denaturated at lower temperature and regions of high crystallinity at higher temperature. The decrease in electric conductivity observed after deproteination of glass sponge spicules showed that electric charge in the native glass sponge spicules was probably transported along the paths formed by collagen. Deproteination changed also σ–T characteristics, the kink at 140°C is caused by glass transition of collagen, whereas the peak at 175°C was probably caused by thermal denaturation of residual collagen of perturbed structure.
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DOI：
10.1016/s0141-8130(03)00071-0
发表时间：
2003-11-01
影响因子：
8.2
作者：
Kubisz, L;Mielcarek, S;Jaroszyk, F
通讯作者：
Jaroszyk, F
MX（3-Chloro-4（二氯甲基）-5-羟基-2（5H）-呋喃酮）处理的胶原蛋白直流电导率的暂时变化
影响因子：
1.8
作者：
L. Kubisz;P. Andrzejewski
通讯作者：
P. Andrzejewski
Ge10SbxSe90−x 系统玻璃态的研究
影响因子：
2.8
作者：
Y.L.A El
通讯作者：
Y.L.A El
影响因子：
2.9
作者：
J. Behari;S. Guha;P. N. Agarwal
通讯作者：
P. N. Agarwal
影响因子：
3.5
作者：
Kubisz, L;Mielcarek, S
通讯作者：
Mielcarek, S