作　　者： ; ; ; ;

机构地区： 华南农业大学理学院

出　　处： 《化学研究与应用》 2005年第6期733-736,共4页

摘　　要： 研究聚丙烯酰胺(PAM)的水解,并对其结构进行了表征。研究了二醛交联的聚丙烯酰胺及其水解产物对水、肥的吸收及保持能力,结果表明,聚丙烯酰胺水解交联后,部分胺基转化为羧基和羟基。由于羧基、羟基和胺基的协同作用,对水和肥的保持、吸收能力大大增强。水解4h的产物PAM-4中羧基、羟基和胺基的协同作用最好,对水和肥的保持、吸收能力最强。与乙二醛交联的PAM-4相比,戊二醛交联的PAM-4因可以有更大的网络伸展空间,水和肥的保持、吸收能力更强。戊二醛交联的PAM-4对CO(NH2)2有较大的吸收容量。 Hydrolysis of polyacrylamide （PAM） was researched. The structures of PAM and its hydrolysate were characterizated with FTIR and ^1H NMR. The absorbability and retentivity of crosslinked polyacrylamide and its modified products to water and fertilizer were investigated. The results showed that , working in coordination with-CONH2.- COO^- and-OH, the absorbability and retentivity of hydrolysates of PAM to water increased. The hydrolysate （ PAM - 4） deriued from 4 h hydrolysis of PAM had the best synergic effect of CONH2 . - COO - and - OH,and possessed the best absorbability and retentivity to water. For cross - linking reagent, compared with glyoxal, glutaraldehyde was better because polymer net can expand more space with glutaraldehyde was cross - linking reagent. For fertilizer absorbability, compared with NH4 NO3 , the product which came from PAM - 4 crosslinked with glutaraldehyde was much better to CO（NH2）2.

关 键 词： 聚丙烯酰胺 水解 交联 吸收

领　　域： [理学] [理学]