Microstructural Features of Poly(N-Vinylpyrrolidone)-La(NO3)3 • 6H2O Hydrogel

被引：1

作者：

Orekhov, A. S. ^{[1
]}

Arkharova, N. A. ^{[1
]}

Klechkovskaya, V. V. ^{[1
]}

机构：

[1] Russian Acad Sci, Shubnikov Inst Crystallog Fed Sci Res Ctr Crystal, Moscow 119333, Russia

来源：

CRYSTALLOGRAPHY REPORTS | 2021年 / 66卷 / 04期

基金：

俄罗斯基础研究基金会;

关键词：

Transmissions - Nanorods - Hydrogels - Lanthanum - Scanning electron microscopy - High resolution transmission electron microscopy;

D O I：

10.1134/S1063774521040179

中图分类号：

O7 [晶体学];

学科分类号：

0702 ; 070205 ; 0703 ; 080501 ;

摘要：

The structural features of the poly(N-vinylpyrrolidone)-La(NO3)(3) center dot 6H(2)O composite hydrogel were studied by scanning and transmission electron microscopy. The La(NO3)(3) center dot 6H(2)O powder, which was used for the preparation of the composite, was shown to contain also hexagonal prismatic crystals with an edge of similar to 1.8 mu m and needle-like crystals with a width of 1 mu m and a length of up to 50 mu m. During the composite formation, the La(NO3)(3) center dot 6H(2)O powder is hydrolyzed in the bulk of the hydrogel, and lanthanum is uniformly distributed in the matrix. However, flower-like structures up to 20 mu m in diameter are formed on the surface of the composite. These structures are composed of lanthanum- and oxygen-rich nanorods. Transmission electron microscopy studies of dried hydrogels showed that the composite hydrogel and flower-like inclusions have an amorphous structure.

引用

页码：699 / 703

页数：5

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