纳米腐植酸/丙烯酸-丙烯酰胺-蒙脱土复合型树脂的制备与表征  

Preparation and characterization of nanoscale humic acid /poly( acrylic acid-acryl amide)-co-montorillonite composite resin

作　　者：程亮[1] 侯翠红[1] 徐丽[1] 雒廷亮[1] 张保林[1] 刘国际[1] 

机构地区：[1]郑州大学化工与能源学院,河南郑州450001

出　　处：《化学工程》2016年第2期12-16,22,共6页Chemical Engineering(China)

基　　金：河南省科技厅基础与前沿项目(2011A530008);郑州大学优秀博士学位论文培育基金(20131131)

摘　　要：以N,N-亚甲基双丙烯酰胺为交联剂,过二硫酸钾为引发剂,丙烯酸、丙烯酰胺、纳米腐植酸及改性蒙脱土为原料,采用水溶液聚合法制备了丙烯酸-丙烯酰胺/纳米腐植酸基复合型树脂。通过单因素及正交实验系统考察了单体比(质量比)、纳米腐植酸用量、反应温度等因素对复合型树脂吸液倍率的影响。最适宜制备工艺条件为:单体比3∶7,纳米腐植酸用量为15%,反应温度65℃,中和度80%,交联剂0.05%,引发剂1.0%,所制备的复合型树脂吸水和吸盐倍率分别为998.90 g/g及102.59 g/g。用FT-IR,SEM及TG-DSC等对产物进行表征,结果表明:纳米腐植酸与丙烯酰胺发生接枝反应,产生了醚键;其表面结构疏松且粗糙,呈现较多孔洞、空隙及凹坑;热稳定性较好。The composite resins based on （acrylic acid-acrylamide）-motorillonite/nano humic acid were prepared by aqueous solution polymerization, using methylene-bis-acrylamide as cross-linking agent, potassium persulfate as initiator, acrylic acid, acrylamide, nano humic acid and modified montmorillonite as material. The effects of the monomer ratio （mass ratio）, nano-humic acid content, reaction temperature were systematically studied through single factor and orthogonal experiment. The optimum conditions were as follows ： the monomer ratio 3 ： 7, nano humic acid content 15% （mass fraction） , reaction temperature 65 ~C, neutralization degree 80% （mass fraction） , cross-linking agent content 0.05% （mass fraction）, and initiator content 1.0% （mass fraction）. The water absorption rate and salt absorption rate of the prepared composite resins were 998.90 g/g and 102.59 g/g, respectively. The product was characterized by FT-IR, SEM and TG-DSC, and the results showed that the grafting reaction took place among nanoscale humic acid and acrylamide, and ether bond emerged; the surface was rough and had loose structure, there were also many holes, voids and pits; it had a good thermal stability.

关 键 词：纳米腐植酸 水溶液聚合 吸水倍率 吸盐倍率 重复使用性 制备 

分 类 号：TQ324.8[化学工程—合成树脂塑料工业]