摘要
以黄原胶(XG)、丙烯酸、丙烯酰胺为主要原料,过硫酸钾为引发剂,通过接枝共聚并复合海泡石制备接枝共聚物,利用红外光谱(FT-IR)对接枝产物进行表征。研究了共聚物对Cu2+的静态吸附行为及动力学特征,结果表明:在温度298.15K,pH为8.2,时间为40min,共聚物对Cu2+的吸附效果最佳。共聚物对Cu2+的吸附行为更加符合Langmiur吸附等温式,吸附过程符合准二级动力学方程。
Acrylic Acid （AA）/Acrylamide（AM） were graft polymerized onto the xanthan gum （XG） with sepiolite, initiated with potassium persulfate.The copolymer structure was characterized by means of Fourier-transform infrared spectroscopy（FT-IR） .Adsorption behavior and Dynamic Characteristics of copolymer for Cu^2＋ were investigated.The results showed that that maximum adsorption capacity, at normal temperature, under the optimal condition for copolymer adsorbing Cu^2＋ that the pH was 8.2, the adsorption time was 40min.The adsorption behavior was adapted to Langmiur adsorption isotherm equation.The process of copolymer adsorbing Cu^2＋ conformed to the pseudo--second-order kinetic model.
出处
《食品工业科技》
CAS
CSCD
北大核心
2010年第3期73-75,79,共4页
Science and Technology of Food Industry
基金
"十一五"国家科学技术支撑计划项目(2006BAD09B04)
陕西省科技计划项目(2008K06-15)
陕西科技大学研究生创新基金
关键词
黄原胶
共聚物
吸附
动力学
海泡石
xanthan gum
copolymer
adsorption
kinetics
sepiolite
