疏水缔合淀粉制备及其水溶液性质研究  

Synthesis of Hydrophobically Associating Starch and Research on Its Solution Properties

作　　者：刘祥义[1] 徐晓军[1] 

机构地区：[1]昆明理工大学环境科学与工程学院

出　　处：《精细化工》2006年第3期238-241,共4页Fine Chemicals

摘　　要：利用氧化还原引发体系,通过反相悬浮聚合技术,合成了疏水缔合淀粉接枝共聚物,研究了其溶液性质。结果表明,在m(淀粉)∶m(丙烯酰胺)∶m(丙烯酸十八酯)=4∶7.4∶0.6时,40℃反应3 h,单体转化率达94.6%,接枝率53.8%,黏均相对分子质量2.23×106;在试样质量浓度为0.3 g/L时,30℃,在去离子水及c(NaC l)=0.20 mol/L盐水溶液中,表观黏度为21.0 mPa.s及25.6 mPa.s,表面张力为56.4 mN/m及48.4 mN/m;在70℃时黏度保持率69%;在剪切速率1/50 s-1时,黏度降低60%。The hydrophobically associating starch （PSOAM） was synthesized by inverse suspension polymerization with redox initator, and its solution properties were researched. When m （starch） ： m （aerylamide） ：m（octadecyl acrylate） =4：7.4：0. 6, reaction temperature was 40 ℃ and reaction time was 3 h, the monomer conversion and graft percentage were 94. 6% and 53.8% respectively and Mn = 2.23 × 10^6. When c（PSOAM） =0. 3 g/L at 30 ℃ ,in pure water and in saline[ c（ NaCl） =0. 20 mol/ L] ,the apparent viscosities were 21.0 mPa·s and 25.6 mPa·s and the surface tensions were 56. 4 mN/ m and 48.4 mN/m, respectively. The apparent viscosity retaining ratio was 69% at 70 ℃ and the apparent viscosity debasement was 60% at shear rate 1/50 s^-1 when c（PSOAM） =0.3g /L.

关 键 词：疏水缔合淀粉 接枝共聚反应 反相悬浮聚合 溶液性能 

分 类 号：TQ423[化学工程]