Department of Chemistry, Government Science College, Jabalpur 482001, India.
Department of Chemistry, Government Science College, Jabalpur 482001, India.
Carbohydr Polym. 2018 Aug 1;193:281-288. doi: 10.1016/j.carbpol.2018.04.006. Epub 2018 Apr 3.
A nanocomposite comprising crosslinked hybrid polymer network was prepared using chitin and sugarcane bagasse in presence of montmorillonite clay. Chitin and sugarcane bagasse were micro-fibrillated by ultrasonication of their suspension in an ionic liquid 2-hydroxy ethylammonium formate. Optimum reaction conditions were established by variation of amounts of initiator, monomer and crosslinker, and microwave irradiation to obtain nanocomposite with swelling degree above 1000% in 24 h. Slow and steady swelling was observed and the sample swelled to about 15,000% to form a hydrogel in 15 days. The nanocomposite was characterized by swelling degree, infrared spectroscopy, X-ray diffraction and scanning electron microscopy. Swelling and reswelling in water was studied for four cycles, erosion was highest after first cycle but became negligible for consecutive cycles. The swelling degree increased up to three cycles then became constant. Nanocomposite shows sufficient antimicrobial activity against S. aureus and E. coli. It is biodegradable in moist garden soil in three months.
采用壳聚糖和甘蔗渣在蒙脱土存在的条件下制备了交联杂化聚合物网络纳米复合材料。通过在离子液体 2-羟乙基铵甲酸盐中将其悬浮液进行超声处理，将壳聚糖和甘蔗渣微纤维化。通过改变引发剂、单体和交联剂的用量以及微波辐射来确定最佳反应条件，以获得在 24 小时内溶胀度超过 1000%的纳米复合材料。观察到缓慢而稳定的溶胀，样品在 15 天内溶胀到约 15000%形成水凝胶。通过溶胀度、红外光谱、X 射线衍射和扫描电子显微镜对纳米复合材料进行了表征。在水中进行了四次溶胀和再溶胀循环研究，第一次循环后侵蚀率最高，但随后的循环侵蚀率可忽略不计。溶胀度增加到三个循环后保持不变。纳米复合材料对金黄色葡萄球菌和大肠杆菌表现出足够的抗菌活性。它在三个月内在潮湿的花园土壤中可生物降解。
