摘要
用氧化-还原引发体系((NH4)2S2O8-NaHSO3)合成了氢氧化铝-聚丙烯酰胺杂化复合絮凝剂。电导和热失重研究的结果表明,杂化物聚丙烯酰胺链的端基(-SO2-4)与带正电荷的氢氧化铝胶体粒子以离子键性质键合。实验考察了反应温度,引发剂用量,氢氧化铝粒径和用量等因素对杂化聚丙烯酰胺合成的影响,发现氢氧化铝的存在可使杂化聚合物分子量显著提高。透射电镜结果显示原位聚合过程能使团聚的氢氧化铝胶体微粒纳米化。
Al(OH)_3-PAM hybrid flocculant was prepared from in-situ polymerization of acrylamide with Al(OH)_3 colloid. Conductivity and TGA of hybrids have been investigated. It was found that ionic bond formed between the positive paricle of Al(OH)_3 colloid and the negative end ((-SO~^(2-)_4)) of PAM chain. The effects of temperature , concentration of initiator, particle size and dosage of Al(OH)_3 colloid on the molecular weight of the hybrid were examined and the intrinsic viscosities of all the hybrids are notably larger than that of pure PAM at same experimental conditions. Also the TEM results show that aggregative particles of Al(OH)_3 colloid can be disaggregated to nano-panicles after in-situ polymerization.
出处
《高分子材料科学与工程》
EI
CAS
CSCD
北大核心
2004年第1期68-71,共4页
Polymer Materials Science & Engineering
基金
国家自然科学基金资助项目(50173034)
关键词
氢氧化铝
聚丙烯酰胺
有机-无机杂化
絮凝剂
合成
表征
inorganic-organic hybrids
in-situ polymerization
polyacrylamide
flocculants
aluminium hydroxide
