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首页> 外文期刊>Journal of Applied Polymer Science >Preparation and characterization of highly oriented poly(gamma-benzyl L-glutamate) networks and gels with long channels with micrometer-scale diameters
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Preparation and characterization of highly oriented poly(gamma-benzyl L-glutamate) networks and gels with long channels with micrometer-scale diameters

机译：具有微米级直径长通道的高取向聚（γ-苄基L-谷氨酸）网络和凝胶的制备和表征

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摘要

Poly(gamma-benzyl L-glutamate) (PBLG) gels with highly oriented alpha-helix chains were prepared by the crosslinking of PBLG chains through changes in the concentration of ethylenediamine, used as a crosslinker, in 1,4-dioxane in the presence of the strong magnetic field of an NMR magnet with a strength of 10.5 T. The experimental results showed that in one of these gels, long channels with an average diameter of about 100 mum were formed by phase separation between crosslinked PBLG and the solvent. Furthermore, three-dimensional H-1-NMR imaging patterns showed that the long channels were aligned in the direction parallel to the a-helix axis. The PBLG gel was swollen in the direction perpendicular to the a-helix axis, but it was not swollen in the direction parallel to the a-helix axis. The X-ray diffraction patterns of the gel showed that the inter-chain distance between the two nearest neighboring PBLG chains changed from 13.4 to 18.1 Angstrom with a change in the swelling degree. (C) 2004 Wiley Periodicals, Inc. [References: 33]
机译：通过在存在的1,4-二恶烷中通过改变乙二胺（用作交联剂）的浓度改变PBLG链来制备具有高度取向的α-螺旋链的聚（γ-苄基L-谷氨酸）（PBLG）凝胶实验结果表明强度为10.5 T的NMR磁体的强磁场。实验结果表明，在这些凝胶之一中，通过交联PBLG与溶剂之间的相分离，形成了平均直径约为100微米的长通道。此外，三维H-1-NMR成像图表明，长通道在平行于α-螺旋轴的方向上排列。 PBLG凝胶在垂直于a螺旋轴的方向上溶胀，但没有在平行于a螺旋轴的方向上溶胀。凝胶的X射线衍射图表明，两个最近的PBLG链之间的链间距离随着溶胀度的变化从13.4埃变为18.1埃。 （C）2004 Wiley Periodicals，Inc. [参考：33]

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