| Na+,Ca2+和Al3+对聚丙烯酸钠的自组装行为的影响 |
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| 引用本文： | 冉千平,邓树山,吴石山,周栋梁.Na+,Ca2+和Al3+对聚丙烯酸钠的自组装行为的影响[J].高分子材料科学与工程,2011(2):30-32. |
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| 作者姓名： | 冉千平 邓树山 吴石山 周栋梁 |
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| 作者单位： | 江苏省建筑科学研究院有限公司;南京大学化学化工学院 |
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| 基金项目： | 江苏省自然科学基金资助项目(BK2008507),江苏省自然科学基金重点项目(BK2007722) |
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| 摘 要： | 采用荧光探针、动态光散射和透射电子显微镜研究了NaCl、CaCl<'2>和AlCl<.3>对水溶液中的聚丙烯酸钠(PAANa)自组装行为的影响.实验结果表明,在含有NaCl的聚丙烯酸钠水溶液中,分子链以线团形式存在;而Ca<'2+>或Al<'3+>与聚丙烯酸钠主链间通过静电相互作用自组装形成疏水胶束.当Ca<'2+>/...
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| 关 键 词： | 聚丙烯酸钠 自组装 疏水胶束 |
Effects of Na+,Ca2+ and Al3+ on Self-Assembly of PAANa |
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| Qianping Ran,Shushan Deng,Shishan Wu,Dongliang Zhou.Effects of Na+,Ca2+ and Al3+ on Self-Assembly of PAANa[J].Polymer Materials Science & Engineering,2011(2):30-32. |
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| Authors: | Qianping Ran Shushan Deng Shishan Wu Dongliang Zhou |
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| Affiliation: | 1(1.Jiangsu Institute of Building Science Co.LTD.,Nanjing 210008,China;2.School of Chemistry and Chemical Engineering,Nanjing University,Nanjing 210093,China) |
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| Abstract: | The effect of NaCl,CaCl2 and AlCl3 on the self-assembly of sodium polyacrylate(PAANa) in aqueous solutions was investigated by fluorescence probe,dynamic light scattering(DLS) and transmission electron microscopy(TEM).The results show that in the PAANa aqueous solutions containing NaCl,the molecular chains of polyacrylic acid exist in the form of coil.However,in the PAANa aqueous solutions containing Ca2+ions or Al3+ ions,the hydrophobic micelles are formed by self-assembly of the molecular chains via electrostatic interaction.The hydrophobic micelles of 20 nm～40 nm in average diameter are observed at the mol ratio of Ca2+/COO-=0.5.Moreover,the average size of the hydrophobic micelles induced by Al3+ is larger than that induced by Ca2+.The self-assembly mechanism of the PAANa induced by Ca2+ or Al3+was also studied in this paper. |
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| Keywords: | PAANa self-assembly hydrophobic micelles |
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