Polymeric Nanosprings by Bicomponent Electrospinning
Polymeric Nanosprings by Bicomponent Electrospinning
复制标题
双组分静电纺丝聚合物纳米弹簧
DOI：
10.1002/mame.200800342
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发表时间：
2009-04-14
影响因子：
3.9
通讯作者：
Agarwal, Seema
中科院分区：
文献类型：
--
作者：
Chen, Shuiliang;Hou, Haoqing;Agarwal, Seema
静电纺丝纤维的增强的弹性同时保持其强度对于一组应用（包括组织工程）将是非常有益的。一种增强弹性的途径可以基于曲率的引入，即，弯曲或紧密的纳米线圈（纳米弹簧）结构。在这方面的贡献调查的概念是引入这样的配置通过一个柔性的热塑性弹性体（聚氨酯）组件和一个刚性的热塑性组件的平行排列的差异收缩。为此目的，通过同轴静电纺丝生产核-壳纤维。据观察，屈曲纳米弹簧的形成可以以这种方式实现。这种纤维的形态以及纺丝溶液的导电性的改变对屈曲和纳米弹簧形成的细节具有相当大的影响。
An enhanced elasticity of electrospun fibers while retaining their strength would be of great benefit for a set of applications (including tissue engineering). One route toward enhanced elasticity may be based on the introduction of curvature, i.e., of buckled or tight nanocoil (nanospring) configurations. The concept investigated in this contribution is to introduce such configurations via a differential shrinkage of a parallel arrangement of a flexible thermoplastic elastomer (polyurethane) component and a rigid thermoplastic component. Core-shell fibers are produced for this purpose by coaxial electrospinning. It is observed that buckling-nanospring formation can be achieved in this way. The morphology of such fibers and also modifications in the conductivity of the spinning solutions have a considerable effect on details of buckling and nanospring formation.