CAJ | 학술논문

为了扩大碱木质素的应用范围,研究了以二甲基烯丙基木质素季铵盐(DL)和海藻酸钠(SA)为原料,以戊二醛为交联剂,制备二甲基烯丙基木质素季铵盐-海藻酸钠两性聚电解质(DL-SA).以对酸性黑ATT 和亚甲基蓝的絮凝性能作为指标,通过单因素实验得出最佳合成条件为交联剂用量为3％(占单体质量百分比),反应温度为75℃,m (DL)∶m (SA)＝2∶1,交联时间为4 h,最优条件下测得对酸性黑 ATT 和亚甲基蓝的脱色分别为86．24％和99．15％.考察了其溶解性、含氮量以及两性聚合物的特点———等电点,采用 FI-IR 表征了产物的结构.结果表明,DL 和 SA 接枝成功,其含氮量由 DL 的2．14％减少为1．25％,且DL-SA 的等电点为4．42,具有两性化合物的特征.
위료확대감목질소적응용범위,연구료이이갑기희병기목질소계안염(DL)화해조산납(SA)위원료,이무이철위교련제,제비이갑기희병기목질소계안염-해조산납량성취전해질(DL-SA).이대산성흑ATT 화아갑기람적서응성능작위지표,통과단인소실험득출최가합성조건위교련제용량위3％(점단체질량백분비),반응온도위75℃,m (DL)∶m (SA)＝2∶1,교련시간위4 h,최우조건하측득대산성흑 ATT 화아갑기람적탈색분별위86．24％화99．15％.고찰료기용해성、함담량이급량성취합물적특점———등전점,채용 FI-IR 표정료산물적결구.결과표명,DL 화 SA 접지성공,기함담량유 DL 적2．14％감소위1．25％,차DL-SA 적등전점위4．42,구유량성화합물적특정.
In order to improve application of lignin,dimethylaiiyl quaternary ammonium salt of lignin-sodium al-ginate polyampholyte (DL-SA)was prepared with dimethylallyl quaternary ammonium salt of lignin (DL)and sodium alginate (SA)and the cross linker was glutaraldehyde.The optimum conditions obtained by monotheism experiments were on the standard of nitrogen content and flocculate ability for acid black ATT,which include:m (DL)∶m (SA)=2 ∶1;75 ℃ of reaction temperature,4 h of reaction time and 4wt% of the glutaraldehyde dosage,which the decolorization rate of acid black ATT was 90.08%.It was investigated the solubility and am-photeric polymer characteristics,ie,isoelectric point.Its structure was analyzed by FT-IR,which was found that DL and SA was grafted successfully,and its nitrogen content was reduced from 2.14% to 1.25%.Its isoe-lectric point was 4.22 and it has compound characteristics.