Nematic elastomers beyond the critical point
Nematic elastomers beyond the critical point
复制标题
超过临界点的向列弹性体
DOI：
10.1002/marc.1994.030150402
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发表时间：
1994
影响因子：
4.6
通讯作者：
H. Finkelmann
中科院分区：
文献类型：
--
作者：
Stefan Disch;C. Schmidt;H. Finkelmann
通过氢化硅烷化合成了液晶单晶硅氧烷弹性体（LSCE），其状态超出了向列相各向同性相变的临界点。这种超临界行为可以通过 LSCE 样品中的机械场和交联产生的有限尺寸效应来解释。这两种效应都对朗道-德热讷自由能做出了额外的贡献，这可能导致临界现象
A liquid single crystal siloxane elastomer (LSCE) is synthesized by hydrosilylation and is shown to be in a state beyond the critical point of the nematic-isotropic phase transformation. This supercritical behaviour may be explained both by mechanical field in the LSCE sample and by the finite size effect arising from the crosslinks. Both effects give additional contributions to the Landau-de Gennes free energy which may lead to the critical phenomenon