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arXiv 0810.1185cond-mat.mtrl-scicond-mat.soft
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混合型polymer结构的数值模拟--以$(Si(CH_3)_2)_n(OSiO)_p(OH)_q$为例

Structure of hybrid polymer by numerical simulation: example of $(Si(CH_3)_2)_n(OSiO)_p(OH)_q$

N. Olivi-Tran, S. Calas, P. Etienne

摘要:

在溶胶-凝胶法制备含有共价键的杂化聚合物时,其结构取决于水解和缩聚的机理。我们计算了紧束缚计算考虑到杂化,不同结构(无定形,分形和线性)的$(Si-(CH_3)_2)_n-(OSiO)_p(OH)_q$的总电子能量。我们发现,非晶结构的总电子能量是最小的作为由该结构所包含的原子数的函数。由于总电子能量与结构的韧性有关,我们可以说这种杂化聚合物的结构对于无定形结构具有最高的韧性。

英文摘要:

The structure depends on the mechanism of hydrolyse and polycondensation in the case sol-gel process used to obtain hybrid polymers containing uniquely covalent bonds. We computed by a tight binding calculation taking into account hybridization, the total electronic energy of different structures (amorphous, fractal and linear) of $(Si-(CH_3)_2)_n-(OSiO)_p(OH)_q$. We found that the total electronic energy of the amorphous structure was the smallest as a function of the number of atoms contained by the structure. As the total electronic energy is linked to the toughness of the structure, we may say that the structure of such hybrid polymer has the highest toughness for the amorphous structure.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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