玉米苞叶纤维素纳米晶的制备及其聚砜复合膜的抗污染性能

doi:10.13475/j.fzxb.20161004507

纺织学报 ›› 2017, Vol. 38 ›› Issue (02): 14-20.doi: 10.13475/j.fzxb.20161004507

玉米苞叶纤维素纳米晶的制备及其聚砜复合膜的抗污染性能

收稿日期:2016-10-17 修回日期:2016-11-02 出版日期:2017-02-15 发布日期:2017-02-27

Preparation of cellulose nanocrystals from corn husk and its antifouling performance for polysulfone composite membrane

Received:2016-10-17 Revised:2016-11-02 Online:2017-02-15 Published:2017-02-27

摘要/Abstract

摘要：

为了提高玉米苞叶的经济价值，以玉米苞叶为原料，采用高强度超声波法制备纤维素纳米晶（CNC），并协同共混相转化法制备聚砜（PSF）/ CNC复合膜。采用扫描电子显微镜、透射电子显微镜、X 射线衍射以及超滤装置测试了CNC和（PSF）/ CNC复合膜的形态结构和性能；探讨了CNC含量对复合膜的强度，亲水性，水通量以及抗污染性能的影响。结果显示，从玉米苞叶中提取的CNC，平均直径为18.82nm，平均长度为569.95nm，晶型结构为纤维素Ⅰ型，结晶度为53.86%。CNC的加入提高了PSF膜的断裂强度，并可改善PSF膜的亲水性和抗污染性能。综合考虑CNC对PSF复合膜结构和性能的影响，得出CNC最佳添加量为2%，相应复合膜的水通量和抗污染性能分别为纯PSF膜的2.13倍和1.32倍，蛋白质截留率为48.34%。

关键词: 纤维素纳米晶, 玉米苞叶, 聚砜/纤维纳米晶复合膜, 蛋白质截留率

Abstract:

In order to improve the economic value of corn husk, cellulose nanocrystal (CNC) was extracted from corn husks by a ultrasonic process. Polysulfone (PSf) /CNC blend membranes were prepared by an immersion phase inversion process. The morphology, structure and properties of CNC and blend membranes were investigated by SEM, TEM, XRD and filtration experiments. The influence of CNC on the strength, water flux, hydrophilic and antifouling performances of PSF/CNC membranes were researched. The results show that the isolated CNC from corn husk has an average diameter of 18.82 nm and an average length of 569.95 nm. The polymorphs of CNC is cellulose I, and the crystallinity of CNC is 53.86 %. CNC can improve the break strength, hydrophlicity and antifouling performance of pure PSf membrane. The blend membrane reaches optimal properties at 2 % CNC content, which is 2.13 and 1.32 times in pure water flux and antifouling property compared with pure PSF membrane. The bull serum albumin (BSA) rejection of blend membrane is 48.34 %

Key words: cellulose nanocrystal, corn husk, polysulfone / cellulose nanocrystal composite membrane, bull serum albumin rejection

杨雪韩阜益降帅赵艳娇刘慧赵兵刘丽芳. 玉米苞叶纤维素纳米晶的制备及其聚砜复合膜的抗污染性能[J]. 纺织学报, 2017, 38(02): 14-20.

参考文献

Metrics

Viewed

Full text

Abstract

Cited

Shared

Discussed

[1]	赵艳娇刘慧杨雪降帅徐春霞牛姿璇刘丽芳. 水稻秸秆纤维素纳米晶须的制备及其表征[J]. 纺织学报, 2017, 38(01): 1-7.
[2]	王晓婷程隆棣刘丽芳. 玉米苞叶及其纤维的基本结构与性能[J]. 纺织学报, 2016, 37(07): 7-12.
[3]	谢雨辰秦宗益李俊. 聚吡咯纤维素纳米晶复合导电材料的制备及其性能表征[J]. 纺织学报, 2013, 34(10): 15-0.

玉米苞叶纤维素纳米晶的制备及其聚砜复合膜的抗污染性能

Preparation of cellulose nanocrystals from corn husk and its antifouling performance for polysulfone composite membrane

PDF (PC)

摘要/Abstract

引用本文

使用本文

参考文献

相关文章 3

Metrics

本文评价

推荐阅读 0