利用壳聚糖直接溶于丙烯酸和引发剂最后加入的方法优化了壳聚糖接枝聚合的工艺流程并大幅缩减了合成时间.将丙烯酸(AA)、丙烯酰胺(AAm)两种单体接枝到壳聚糖(CTS)上,合成了具有良好溶胀性能的壳聚糖基水凝胶.讨论了各合成因素对凝胶溶胀性能的影响.结果表明:温度为40℃,CTS用量5.0wt％、AAm用量25wt％、交联剂MBA用量0.1wt％,引发剂用量为1.0wt％、m(AA)/m(CTS)为10、中和度60％,在上述最佳条件下合成的吸水性树脂可以达到最大的溶胀度616g/g.同时对产品的耐盐性进行了测试、对形态学结构进行了观察,结果显示该产品具有良好的耐盐性以及紧凑的网状结构,可能成为一种应用前景良好的吸水材料.
参考文献
| [1] | Wikipedia.Gel[M/OL].http://en.wikipedia.org/wiki/gel.28 May 2008.,2008. |
| [2] | L.B F,T.G A.Modern Superabsorbent Polymer Technology[M].New York:Wiley-VCH,1998.,1998. |
| [3] | Brannon-Peppas L,Harland R.Absorbent Polymer Technology[M].Amsterdam:Elsevier,1990.,1990. |
| [4] | Andrade J.Hydrogels for medical and related applications[M].Washington DC:American Chemical Society,1976.,1976. |
| [5] | 胡玉洁,李青山,顾晓华.天然高分子材料改性与应用[M].北京:化学工业出版社,2003.,2003. |
| [6] | 蒋林斌,李容,杨华,张淑琼,李天明.γ辐射法制备壳聚糖接枝共聚物及其絮凝性能[J].广西大学学报（自然科学版）,2009(05):627-630. |
| [7] | 蒋挺大.甲壳素[M].北京:化学工业出版社,2005.,2005. |
| [8] | Yu C,Yun-Fei L,Hui-Min T .Hydroxyethyl chitosan-g-poly (acrylic acid-co-sodium acrylate) superabsorbent polymers[J].Journal of Applied Polymer Science,2010,117(4):2233~2240.,2010. |
| [9] | 金海琴,张玉红,董勤政,李小红,何培新.壳聚糖接枝丙烯酸/丙烯酰胺水凝胶的制备及性能[J].高分子材料科学与工程,2009(11):129-132. |
| [10] | 陈煜,陆铭,王海涛,谭惠民.壳聚糖接枝聚丙烯酸高吸水性树脂的合成工艺[J].高分子材料科学与工程,2005(05):266-269. |
| [11] | 李晟,谢建军,何新建,黄凯,韩心强,张绘营.壳聚糖接枝丙烯酸-丙烯酰胺高吸水树脂的制备[J].精细化工中间体,2010(02):54-57,72. |
| [12] | Wang Q,Zhang J,Wang A .Preparation and characterization of a novel pH-sensitive chitosan-g-poly (acrylic acid)/attapulgite/sodium alginate composite hydrogel bead for controlled release of diclofenac sodium[J].Carbohydrate Polymers,2009,78(4):731~737.,2009. |
| [13] | CHANG K L B,Lin J .Swelling behavior and the release of protein from chitosan pectin composite particles[J].Carbohydrate Polymers,2000,43(2):163~169.,2000. |
| [14] | Mahdavinia G R,Pourjavadi A,Hosseinzadeh H,et al .Modified chitosan 4.Superabsorbent hydrogels from poly(acrylic acid-co-acrylamide) grafted chitosan with salt-and pH-responsiveness properties[J].European Polymer Journal,2004,40(7):1399~1407.,2004. |
| [15] | Sun X-F,Wanga H-h,Jing Z-x,et al .Hemicellulose-based pH-sensitive and biodegradable hydrogel for controlled drug delivery[J].Carbohydr Polym,2013,92(2):1357~1366.,2013. |
| [16] | Jun Chen,Haesun Park,Kinam Park .Synthesis of superporous hydrogels:Hydrogels with fast swelling and superabsorbent properties[J].Journal of Biomedical Materials Research,1999,40(1):53~62.,1999. |
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