2,4-二(3-磺酸基苯胺基)-1,3,5-三嗪-6-淀粉醚的合成及粘度特性

以6-氯-2,4-二(3-磺酸苯胺基)-1,3,5-三嗪(BSTS)为醚化剂,二甲基亚砜(DMSO)为溶剂,合成了新型的含磺酸基团的淀粉衍生物2,4-二(3-磺酸苯胺基)-1,3,5-三嗪-6-淀粉醚(BSTSS)。考察了该醚化剂与淀粉反应的影响因素,得出了最佳制备条件为:n(BSTS)∶n(AGU)=0.4∶1,n(NaOH)∶n(AGU)=0.6∶1,反应时间4 h。通过IR、1HNMR表征了产品结构;通过GPC测量了产品的相对分子质量。研究了pH对溶液黏度的影响,结果表明,该淀粉醚溶液具有较好的抗酸碱性。

Synthesis and Viscosity Properties of 2,4-bis(3- sulfonic aniline ) -1,3,5- triazine -6- starch ether

A novel starch derivative of 2,4-bis(3- sulfonic aniline ) -1,3,5- triazine -6- starch ether (BSTSS) containing sulfonic acid groups was prepared in dimethylsulfoxide (DMSO) using 2,4-bis(3- sulfonic aniline)-6-chloro-1,3,5]-triazine (BSTS) as etherifying agent. Effect of reaction conditions on the preparation of BSTSS was studied in detail and the optimized conditions were proved as follows: n (BSTS) : n (AGU) = 0.4 : 1, n (NaOH) : n (AGU) = 0.6 : 1, reaction time 4 h. The structure of BSTSS was determined by IR and NMR and the molecular weight of the product was measured by GPC . Effect of pH on the solution viscosities was studied and the results showed that the BSTSS had good acid and base resistance.