Du Jian, Li Bin, Li Chao, Zhang Yuedong, Yu Guang, Wang Haisong, Mu Xindong
CAS Key Laboratory of Bio-based Materials, Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao 266101, Shandong, China; University of Chinese Academy of Sciences, Beijing 100049, China.
CAS Key Laboratory of Bio-based Materials, Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao 266101, Shandong, China.
Int J Biol Macromol. 2016 Jul;88:451-6. doi: 10.1016/j.ijbiomac.2016.04.013. Epub 2016 Apr 7.
The hemicellulose isolated from the spent liquor of a viscose process was successfully utilized to prepare hydrogels by the graft copolymerization of acrylic acid (AA) with hemicellulose. The hemicellulose and prepared hydrogel were characterized by Fourier-transform infrared (FT-IR), scanning electron microscopy (SEM), and solid-state nuclear magnetic resonance ((13)C NMR). Under the optimum preparation conditions, the highest compressive strength and strain at break of the resultant hydrogel were 105.1±12.9kPa and 34.8%, respectively. Furthermore, the maximum equilibrium swelling degree of prepared hydrogel was 192. Also, the hydrogel could rapidly respond to pH, salt and ethanol. Taken together, the prepared hydrogels had great mechanical and multi-responsive properties. Thus, the prepared hydrogels had a great potential application in drug release, water treatment and cell immobilization. In addition, the utilization of alkaline extracted hemicellulose from the viscose fiber factory has huge market potential and economic benefits.
从粘胶工艺的废液中分离出的半纤维素通过丙烯酸（AA）与半纤维素的接枝共聚成功用于制备水凝胶。通过傅里叶变换红外光谱（FT-IR）、扫描电子显微镜（SEM）和固态核磁共振（¹³C NMR）对半纤维素和制备的水凝胶进行了表征。在最佳制备条件下，所得水凝胶的最高抗压强度和断裂应变分别为105.1±12.9kPa和34.8%。此外，制备的水凝胶的最大平衡溶胀度为192。而且，该水凝胶能对pH、盐和乙醇快速响应。综上所述，制备的水凝胶具有良好的机械性能和多重响应性能。因此，制备的水凝胶在药物释放、水处理和细胞固定化方面具有巨大的潜在应用价值。此外，利用粘胶纤维厂碱性提取的半纤维素具有巨大的市场潜力和经济效益。
