采用碱/尿素/水体系对实验室自制的纤维素氨基甲酸酯(N％-1.8)在双螺杆中进行低温溶解,过滤、脱泡,得到清亮的纤维素氨基甲酸酯溶液.探讨制膜液浓度、凝固浴浓度、凝固浴温度,凝固时间对再生膜力学性能的影响,并结合FT-IR、XRD、SEM对膜的结构和形貌进行表征.结果表明,制膜液浓度为4.5wt％,凝固浴为H2SO4-8％、HOAc-16％和H2SO4/Na2SO4-7 ％/9％,凝固温度20～30℃,凝固时间为5min时所得的膜具有较好的力学性能,抗拉强度达到60～70MPa,断裂伸长率为6～10％.
参考文献
| [1] | 童贤涛,钟璇,何小云,李欣达,兰嫒,余木火.纤维素膜的制备及性能研究[J].高分子通报,2013(10):151-155. |
| [2] | 郭义 .纤维素氨基甲酸酯的微波合成、性质及其应用[D].武汉:武汉大学,2011. |
| [3] | 王治凯,王怀芳,欧康康.羊毛与纤维素共混膜的性能[J].材料科学与工程学报,2012(05):783-787. |
| [4] | Dieter Klemm;Brigitte Heublein;Hans-Peter Fink;Andreas Bohn .Cellulose:Fascinating Biopolymer and Sustainable Raw Material[J].Angewandte Chemie,2005(22):3358-3393. |
| [5] | Haisong Qi;Chunyu Chang;Lina Zhang .Properties and applications of biodegradable transparent and photoluminescent cellulose films prepared via a green process[J].Green chemistry,2009(2):177-184. |
| [6] | Zhang LN.;Ruan D.;Gao SJ. .Dissolution and regeneration of cellulose in NaOH/thiourea aqueous solution[J].Journal of Polymer Science, Part B. Polymer Physics,2002(14):1521-1529. |
| [7] | Zhou JP.;Zhang LN.;Cai J. .Behavior of cellulose in NaOH/urea aqueous solution characterized by light scattering and viscometry[J].Journal of Polymer Science, Part B. Polymer Physics,2004(2):347-353. |
| [8] | 余木火,张玥,韩克清,李欣达,黎欢,钟璇,童贤涛,顾文庆,谢和平.低温碱尿素法制备纤维素纤维的研究进展[J].纺织学报,2014(02):121-125,132. |
| [9] | Hill J W;Jacobsen R A .Process for the production of cellulose carbamate[P].US,2134825,1938. |
| [10] | 刘雁红,赵琤,刘常金,郑焕兰,杨婷.纤维素氨基甲酸酯的合成研究进展[J].纤维素科学与技术,2009(04):59-66. |
| [11] | GB 13022-91.塑料薄膜拉伸性能试验方法[S]. |
| [12] | L.Segal;J.J.Creely;A.E.Martin;C.M.Conrad.An emprical method for estimating the degree of crystallintiy of native cellulose using the X-Ray diffractometer[J].Textile Research Journal,1956(29):786-793. |
| [13] | Xuming Chen;Christian Burger;Fen Wan .Structure Study of Cellulose Fibers Wet-Spun from Environmentally Friendly NaOH/Urea Aqueous Solutions[J].Biomacromolecules,2007(6):1918-1926. |
| [14] | 程博闻,任元林,汪渊龙,丁长坤.纤维素氨基甲酸酯的合成及表征[J].纺织学报,2007(08):1-4,11. |
| [15] | Liu, SL;Zhang, LN .Effects of polymer concentration and coagulation temperature on the properties of regenerated cellulose films prepared from LiOH/urea solution[J].Cellulose,2009(2):189-198. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%