PDA胶体制备工艺的改进研究

【作者】 邢跃鹏；

【导师】 张跃军；

【作者基本信息】 南京理工大学 ， 应用化学， 2004， 硕士

【摘要】 本文对PDA胶体的一次性加料法和活泼单体补加法制备工艺进行了改进研究。以工业单体P₄和简单精制工业单体P₄为原料，加入金属离子螯合剂Na₄EDTA，使用过硫酸铵—亚硫酸氢钠引发体系，探索了一次性加入原料和一次性加入引发剂合成10％和20％阳离子度PDA的聚合反应工艺条件；通过对工艺条件的初步探索实验和正交优化实验，以简单精制工业单体P₄为原料制得10％和20％阳离子度PDA的特征粘度分别为15.50 dL·g^-1和10.50 dL·g^-1。以工业单体P₄为原料，加入金属离子螯合剂Na₄EDTA，使用过硫酸铵—四甲基乙二胺引发体系，探索了一次性加入引发剂，活泼单体补加法合成30％阳离子度PDA的聚合反应工艺条件；通过对工艺条件的初步探索实验和正交优化实验，制得30％阳离子度PDA的特征粘度和阳离子转化率分别为7.50 dL·g^-1和55％。更多还原

【Abstract】 Preparation technology of polymer PDA by one-stage addition of monomers and stage-addition of active monomers was improved in this paper.Using industrial cationic monomer solution P4 or its simply refined solution as monomer ,and Na4EDTA as a chelate agent for metal ions ,adopting redox complex of ammonium persulfate and sodium hydrogen sulfite as an initiator,polymerization technologies of the PDA with cationicity 10% and 20% were investigated by one-stage addition of monomers and initiator.Through a series of preliminary experiments and orthonormal experiments of technological parameters,the intrinsic viscosity of the PDA product with cationicity 10% and 20% reached 15.50 dL g-1 and 10.50 dL g-1, respectively ,by use of simply refined industrial monomer P4 as a monomer under optimum conditions. Using industrial cationic monomer solution P4 as a monomer and Na4EDTA as a chelate agent for metal ions,adopting redox complex of ammonium persulfate and N,N,N’,N’-Tetramethyl-ethylenediamine as an initiator,polymerization technology of the PDA with cationicity 30% was investigated by one-stage addition of initiator and stage-addition of active monomers.Through a series of preliminary experiments and orthonormal experiments of technological parameters,the intrinsic viscosity and cationic convertion rate of the PDA product with cationicity 30% reached 7.50 dL-g’1 and 55% under optimum condition, respectively.更多还原