摘要
以阳离子淀粉、丙烯腈、丙烯酰胺为主要单体,氧氯化锆(ZrOCl_2·8H_2O)为交联剂,采用无皂乳液两步聚合法制备了氰乙基淀粉接枝阳离子聚丙烯酰胺树脂(AS-CPAM)。用红外光谱(FT-IR)、X射线衍射(XRD)、差示扫描量热分析(DSC)和热重分析(TG)对聚合物结构进行了表征,结果表明,AS-CPAM中各单体单元的存在,且AA-CPAM树脂属于非晶态聚合物,聚合体系中主要成分AS及CPAM由于交联剂的存在其相对依赖性增加;聚合物在198.3℃开始分解,符合造纸工艺的温度要求。扫描电镜(SEM)观察了纸张表面及断面的微观结构,显示出纤维之间结合得更加紧密,为提高纸张干强度提供了依据。当(AS-CRAM)用量增至1%时,纸张表面强度逐渐增大,环压强度提高27.8%,耐破度提高45%。
Acrylon-ethylized starch graft cationic polyacrylate amide resin （AS-CPAM）as the paper dry strengthening agents was prepared by soap-free emulsion process. Cationic starch, acrylate amide and vinylcyanide were used as the main materials, oxygen chlorinated zirconium as the crosslink agent. FT-IR, XRD, DSC and TG were used to analyze the physical properties of the AS-CPAM resin. The microstructure of surface and cross section of paper was observed by SEM. The experimental results show the structure of the AS-CPAM resin, the dry strengthening agent is successfully prepared, and the fibers connect even more closely, the AS-CPAM resin is amorphous polymer, graft copolymerization reaction is successful, the original decomposition temperature of AS- CPAM is near 198.3℃. Thus the intensity performances of the ring crush strength and bursting strength can be increased by 27.8 % and 45% as the mass fraction of.AS-CPAM solution increased to 1%.
出处
《高分子材料科学与工程》
EI
CAS
CSCD
北大核心
2011年第6期41-44,共4页
Polymer Materials Science & Engineering
基金
国家自然科学基金资助项目(50473049,50673055)
关键词
氰乙基淀粉
表面强度
增干强剂
接枝共聚
聚丙烯酰胺
acrylon-ethylized starch
surface strength
dry strengthening agent
graft copolymerization
polyacrylate amide
