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首页> 外文期刊>Journal of Applied Polymer Science >Novel Strategy for the Ionotropic Crosslinking of Chitosan-Alginate Polyelectrolyte Complexes
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Novel Strategy for the Ionotropic Crosslinking of Chitosan-Alginate Polyelectrolyte Complexes

机译：壳聚糖-藻酸盐聚电解质配合物离子交联的新策略

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摘要

The formation kinetics of chitosan-alginate polyelectrolyte complex (CAPEC) was investigated in the presence of various ionic crosslinkers. The effects of binary mixtures of some anions with Ca~(2+) cations were also studied as a novel application. CAPEC gelation was enhanced in cases where Ca~(2+) ions coexisted with anionic crosslinkers compared to their conventional individual use, and this resulted in dispersions with higher stability. We demonstrated that the effects of some anions on CAPEC gelation could be reversed in the presence of Ca~(2+) ions, such that the inhibitory anions became enhancers. The results also revealed that Ca~(2+) ions, the most widely used ionic crosslinkers in CAPEC synthesis, exerted inhibitory effect on CAPEC gelation at low concentrations; in addition, the use of Ca~(2+) ions alone resulted in decreased dispersion stability. The effects of the binary crosslinker on the structure and properties of CAPEC were studied by scanning electron microscopy, Fourier transform infrared spectroscopy, particle size analysis, and ξ-potential analyses.
机译：在各种离子交联剂存在下，研究了壳聚糖-海藻酸酯聚电解质复合物（CAPEC）的形成动力学。还研究了一些阴离子与Ca〜（2+）阳离子的二元混合物的影响，并将其作为一种新的应用。与传统的单独使用相比，在Ca〜（2+）离子与阴离子交联剂共存的情况下，CAPEC凝胶作用得到增强，这导致分散液具有更高的稳定性。我们证明了在Ca〜（2+）离子存在下，某些阴离子对CAPEC凝胶化的作用可以逆转，从而使抑制性阴离子成为增强剂。结果还表明，在CAPEC合成中使用最广泛的离子交联剂Ca〜（2+）离子在低浓度下对CAPEC凝胶化具有抑制作用。此外，单独使用Ca〜（2+）离子会导致分散稳定性降低。通过扫描电子显微镜，傅立叶变换红外光谱，粒度分析和ξ电位分析研究了二元交联剂对CAPEC结构和性能的影响。

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