异丙基丙烯酰胺))半互穿网络水凝胶的制备及其溶胀性能 |
| |
引用本文: | 张高奇,查刘生,梁伯润. 异丙基丙烯酰胺))半互穿网络水凝胶的制备及其溶胀性能[J]. 医学教育探索, 2009, 0(1): 64-68 |
| |
作者姓名: | 张高奇 查刘生 梁伯润 |
| |
作者单位: | 浙江传化股份有限公司技术中心;东华大学材料科学与工程学院纤维材料改性国家重点实验室;东华大学材料科学与工程学院纤维材料改性国家重点实验室 |
| |
摘 要: | 将线性聚(N-异丙基丙烯酰胺)(PNIPAAm)和海藻酸钠(SA)分子同时引入到PNIPAAm凝胶中,制备了交联聚(N-异丙基丙烯酰胺)/(海藻酸钠/聚(N异丙基丙烯酰胺))半互穿网络(Cr-PNIPAAm/(SA/PNIPAAm) semi-IPN)水凝胶。在弱碱性条件下(pH=7.4),改变SA与线性PNIPAAm的质量比对Cr-PNIPAAm/(SA/PNIPAAm) semi-IPN水凝胶的溶胀度没有太大的影响。在酸性条件下(pH=1.0),其溶胀度随着SA与线性PNIPAAm质量比的减小而增大。由于亲水性SA与线性PNIPAAm的协同作用,CrPNIPAAm/(SA/PNIPAAm) semi-IPN水凝胶的消溶胀速率得到很大提高。
|
关 键 词: | 海藻酸钠;聚(N-异丙基丙烯酰胺);温敏性水凝胶 |
收稿时间: | 2008-09-05 |
Preparation and Swelling Properties of Cross Linked Poly(N-isopropylacrylamide)/(Sodium Alginate/Poly(N-isopropylacrylamide))Semi-interpenetrating Polymer Network Hydrogel |
| |
Abstract: | Cross-linked poly(N-isopropylacrylamide)/sodium alginate/linear poly(N-isopropylacryla mide) semi-interpenetrating polymer network (Cr-PNIPAAm/(SA/PNIPAAm) semi-IPN) hydrogels were prepared by addition of sodium alginate and linear PNIPAAm into cross-linked PNIPAAm hydrogel network. Results indicate that the mass ratios of SA to linear PNIPAAm have little effects on the swelling ratios of Cr-PNIPAAm/(SA/PNIPAAm) semi-IPN hydrogels in weakly alkaline medium (pH=7.4). Whereas the swelling ratios of the hydrogels increase with the reduce of the mass ratios of SA to linear PNIPAAm in strong acidic medium (pH=1.0). Compared with PNIPAAm hydrogels, the deswelling rates of Cr PNIPAAm/(SA/PNIPAAm) semi IPN hydrogels are greatly enhanced due to the concurrent effect of the linear PNIPAAm and hydrophilic SA. |
| |
Keywords: | sodium alginate poly(N-isopropylacrylamide) temperature sensitive hydrogel |
|
| 点击此处可从《医学教育探索》浏览原始摘要信息 |
|
点击此处可从《医学教育探索》下载全文 |