Post Graduate & Research Department of Chemistry, St. Joseph's College, Devagiri, Calicut 673008, Kerala, India; School of Chemical Sciences, Mahatma Gandhi University, Kottayam 686560, Kerala, India.
Post Graduate & Research Department of Chemistry, St. Joseph's College, Devagiri, Calicut 673008, Kerala, India; School of Chemical Sciences, Mahatma Gandhi University, Kottayam 686560, Kerala, India.
J Colloid Interface Sci. 2015 Jan 15;438:110-115. doi: 10.1016/j.jcis.2014.09.034. Epub 2014 Sep 30.
Amphiphilic graft copolymers made of a Chitosan (CS) backbone and three arm polystyrene (PS) grafts were prepared by "grafting onto" strategy using Toluene Diisocyanate. IR spectroscopy and SEC show the successful grafting process. SEM pictures of Chitosan-g-Polystyrene (CS-g-PS) indicate a spherulite like surface and exhibit properties that result from the disappearance of Chitosan crystallinity. The introduced polystyrene star grafts units improve hydrophobic properties considerably as confirmed by the very high solubility of (CS-g-PS) in organic solvents. The graft copolymer which self-assembles into polymeric micelles in organic media demonstrates much better adsorption of transition and inner transition metal ions than pure Chitosan whose amine groups are not necessarily available due to crystallinity.
由壳聚糖（CS）主链和三个臂聚苯乙烯（PS）接枝组成的两亲性接枝共聚物通过使用甲苯二异氰酸酯的“接枝到”策略制备。IR 光谱和 SEC 表明接枝过程成功。壳聚糖接枝聚苯乙烯（CS-g-PS）的 SEM 图片表明其具有类似球晶的表面，并表现出由于壳聚糖结晶度消失而产生的性质。引入的聚苯乙烯星型接枝单元极大地改善了疏水性，这一点通过（CS-g-PS）在有机溶剂中非常高的溶解度得到证实。在有机介质中自组装成聚合物胶束的接枝共聚物对过渡金属和内过渡金属离子的吸附性能明显优于纯壳聚糖，因为壳聚糖的胺基由于结晶度而不一定可用。
