Abstract
PDGI-PAAm gels with well oriented lipid bilayers show a quasi-unidirectional shrinkage upon uniaxial stretching along the bilayers. They shrink largely parallel to the bilayer but slightly perpendicular to it in order not to increase the bilayer area and its interfacial energy. Such an anisotropic deformation can be well-modelled based on classical theories for gel networks and lipid layers.
Highlights
Tasuku Nakajima,*a Corentin Durand,bc Xu Feng Li,c Md
When gels are uniaxially stretched along the x-axis with the deformation ratio of l, they shrink along the y and z-axes with the deformation ratio of lÀ0.5
One kind of gel having such restrictions, the PDGI–PAAm gel with thousands of monodomain lamellar bilayers, has been reported.[6,7,8,9]. This gel consists of hard, uniaxially-oriented sheetlike poly(dodecyl glycidyl itaconate) (PDGI) lipid bilayers xed within so PAAm gel as the matrix
Summary
Tasuku Nakajima,*a Corentin Durand,bc Xu Feng Li,c Md. Anamul Haque,ad Takayuki Kurokawaa and Jian Ping Gong*a. If a PDGI–PAAm gel swells along the x or y-axes, this process is always accompanied by an area expansion of the bilayer, which is energetically unfavourable. As such anisotropic PDGI–PAAm gels show anisotropic swelling due to the bilayers, they should show anisotropic deformation upon uniaxial stretching.
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