单体对接枝共聚制备阳离子硫酸盐浆的影响  

Effects of Monomers on Preparation of Cationic Kraft Pulp by Grafting Copolymerization

作　　者：毛连山[1] 刘桂南[2] Claude Daneault Francois Brouillette 

机构地区：[1]南京林业大学化工学院,江苏南京210037 [2]加拿大魁北克大学三河分校制浆造纸研究中心

出　　处：《中国造纸学报》2009年第2期56-59,共4页Transactions of China Pulp and Paper

摘　　要：通过接枝共聚使纸浆纤维阳离子化能有效地提高纸浆强度和对填料和细小纤维的助留。本实验系统地研究了单体的种类以及阳离子单体和非离子单体的比例对接枝共聚制备阳离子硫酸盐浆的影响。研究结果表明,阳离子单体甲基丙烯酰氧基乙基三甲基氯化铵(MAETMAC)比二烯丙基二甲基氯化铵(DADMAC)更容易与硫酸盐浆纤维接枝共聚,在相同的反应条件下,等物质的量(3.6 mmol/g)的阳离子单体MAETMAC和DADMAC分别与硫酸盐浆反应,浆纤维的表面电荷密度分别为189.24 mmol/kg和26.45 mmol/kg。非离子单体丙烯酰胺(AM)与阳离子单体MAETMAC和DADMAC在与硫酸盐浆接枝反应时具有协同作用,能显著提高浆纤维的表面电荷密度,尤其是当阳离子单体n(MAETMAC)∶n(DADMAC)=1∶1,总阳离子单体用量为3.6 mmol/g且与中性单体的物质的量比为2∶3时协同作用最为明显,浆纤维表面电荷密度达到311.77 mmol/kg。Cationization of pulp fibers by grafting copolymerization has been regarded as one of the effective approaches to enhance the paper strength and the retention of fillers and fines. Effects of the type of monomers and ratio of cationic monomer to non-ionic monomer on preparation of cationic kraft pulp by grafting copolymerization were investigated in this work. Results showed that [ 2-（methacryloyloxy） ethyl ] trimethyl ammonium chloride （MAETMAC） was easier to react with kraft pulp fibers than diallyl dimethyl ammonium chloride （ DADMAC）, and the surface charge density of the cationic kraft pulp fibers were 189.24 mmol/kg and 26.45 mmol/kg, when MAETMAC and DADMAC is used respectively in the same dosage （3.6 mmol/g pulp ）. The synergetic behaviour was found when the non-ionic monomer acrylamide （AM） was added into cationic monomers such as MAETMAC and DADMAC, and the surface charge density of kraft pulp fibers was improved remarkably. Particularly, the synergetic behaviour was most obvious when the molar ratio of cationic monomer （ the molar ratio of MAETMAC to DADMAC was 1 ： 1, and the total dosage of cationic monomer was 3.6 mmol/g pulp） to non-ionic monomer AM was 2： 3, and the surface charge density of kraft pulp fibres was 311.77 mmol/kg.

关 键 词：硫酸盐浆 阳离子化 接枝共聚 表面电荷密度 协同作用 

分 类 号：TS743[轻工技术与工程—制浆造纸工程]