Department of Chemistry, Gandhigram Rural Institute, Deemed University, Gandhigram, Dindigul District, 624302, Tamil Nadu, India.
School of Chemical Sciences, Mahatma Gandhi University, Kottayam 686560, Kerala, India; International and Inter University Centre for Nanoscience and Nanotechnology, Mahatma Gandhi University, Kottayam 686560, Kerala, India.
Carbohydr Polym. 2017 Jun 1;165:115-122. doi: 10.1016/j.carbpol.2017.02.046. Epub 2017 Feb 16.
In this study, an active functional adsorbent membrane developed by combining both hydrophilic bio polymer filler such as chitin nanowhiskers (ChNW) which contains two functional groups and a hydrophobic polymer matrix such as polyvinylidene fluoride (PVDF) using electrospinning technique. Here ChNW were successfully extracted by excluding proteins and mineral and well characterized using FTIR, XRD, SEM and TEM. The optimized combination of PVDF/ChNW (15%:1%) membrane was fabricated and well characterized using SEM, water contact angle and FTIR spectroscopy. There was a remarkable difference in contact angle observed for PVDF/ChNW (22.72°) compared to neat PVDF (93.1°) membrane. Ultimately the membrane used for indigo carmine (IC) adsorption and an enhanced removal efficiency (88.9%) and adsorption capacity (72.6mgg) were observed compared to neat PVDF. In the future, the overall idea can make leads to various applications such as proteins, virus and hormones adsorption from the contaminated sources.
在这项研究中，通过静电纺丝技术将亲水性生物聚合物填充剂（如含有两个官能团的壳聚糖纳米纤维（ChNW））与疏水性聚合物基质（如聚偏二氟乙烯（PVDF））结合，开发出一种活性功能吸附膜。在此，通过排除蛋白质和矿物质成功提取了 ChNW，并使用傅里叶变换红外光谱（FTIR）、X 射线衍射（XRD）、扫描电子显微镜（SEM）和透射电子显微镜（TEM）对其进行了很好的表征。使用 SEM、水接触角和傅里叶变换红外光谱（FTIR）对优化的 PVDF/ChNW（15%：1%）膜进行了制备和表征。与纯 PVDF（93.1°）膜相比，PVDF/ChNW（22.72°）的接触角有明显差异。最终，与纯 PVDF 相比，该膜用于靛蓝胭脂红（IC）吸附，观察到去除效率（88.9%）和吸附容量（72.6mgg）得到提高。未来，这一总体思路可能会导致各种应用，如从污染来源中吸附蛋白质、病毒和激素。
