3D打印碱基纤维素凝胶材料

3D Printing Alkaline Cellulose Gel Material

在低温条件下使用环氧氯丙烷为交联剂,将纤维素溶解于氢氧化钠/硫脲/尿素/水碱基体系并制备了纤维素凝胶,探究了搅拌速度、试验温度和纤维素质量分数等因素对纤维素凝胶的制备及其黏度的影响。结果表明,质量分数为4.5%的纤维素以1500 r/min的搅拌速率在–10℃条件下制备的纤维素凝胶最佳,该纤维素凝胶具有特殊的亲水性聚合物的三维网络结构,并具有抗菌性可作为药物的载体,在生物医学等诸多领域有着广阔的发展空间。使用移动激光扫描纤维素凝胶,可诱导其固化实现纤维素凝胶材料的3D打印。将纤维素凝胶材料与3D打印技术结合,具有材料来源广泛、成本低廉和可快速成型制造等优势,在未来诸多领域发展中将发挥重大作用。

Using epichlorohydrin as cross-linking agent under low temperature conditions,cellulose was dissolved in sodium hydroxide/thiourea/urea/water base system to prepare cellulose gel,and the effects of factors such as the stirring speed,test temperature and cellulose mass fraction on the preparation of cellulose gel and its viscosity were explored.The results show that the cellulose gel with the mass fraction of 4.5%is best prepared at the stirring rate of 1500 r/min at–10℃.The cellulose gel has a special hydrophilic polymer three-dimensional network structure,and has antibacterial property and can be used as drug carrier,so it has a broad development space in many fields such as biomedicine.The 3D printing of cellulose gel materials can be realized by using mobile laser scanning.The combination of cellulose gel materials and 3D printing technology has the advantages of wide material sources,low cost and rapid prototyping and manufacturing,which will play an important role in the development of many fields in the future.