J Phys Chem B. 2009 Nov 12;113(45):14839-43. doi: 10.1021/jp906899j.
The effect of the presence of ions on the aggregation behavior of natural polymer alginate in aqueous media was investigated. Through self-assembly of alginate in aqueous solutions containing Ca2+ and CO(3)(2-) ions under very mild conditions, nanosized aggregates with four different morphologies, i.e., nanosphere, vesicle, nanoparticle, and nanorod, could be obtained under different ion concentrations. This study provides a simple approach to prepare organic/inorganic (O/I) hybrid natural polymer based aggregates with different morphologies.
研究了离子的存在对天然聚合物海藻酸钠在水介质中聚集行为的影响。通过在非常温和的条件下，使含有 Ca2+和 CO(3)(2-)离子的水溶液中的海藻酸钠自组装，可以在不同的离子浓度下得到具有四种不同形态的纳米级聚集体，即纳米球、囊泡、纳米颗粒和纳米棒。本研究提供了一种简单的方法来制备具有不同形态的有机/无机（O/I）杂化天然聚合物基聚集体。
