论文部分内容阅读
铜氨纤维是一种迎合当今环保趋势的绿色纺织材料。作为纤维素性质的拓展、延伸和实际应用,制备铜氨纤维,对学生来说是很有趣的化学实验。但在实验室溶解纤维素的实验不易成功,主要问题就在于所配制的铜氨溶液不合要求,实验成功的关键在于铜氨离子的浓度要大,溶液的碱性要强。在教学过程中,我们找到了一种更为简易的制法,具体方案如下:
Cupra is a green textile material that caters to today’s environmental trends. As an extension, extension and practical application of cellulose properties, the preparation of cuprammonium fibers is a very interesting chemistry experiment for students. However, the experiment of dissolving cellulose in the laboratory is not easy to succeed. The main problem is that the prepared cuprammonium solution is not satisfactory. The key to the successful experiment is that the concentration of cuprammonium ion should be large and the alkalinity of solution should be stronger. In the teaching process, we found a more simple system of law, the specific plan is as follows: