疏水改性羧甲基纤维素及其在废纸脱墨中的应用  

Application of Hydrophobic Carboxymethyl Cellulose in Deinking

作　　者：贝俊杰[1] 曹云峰[1] 

机构地区：[1]南京林业大学江苏省制浆造纸科学与技术重点实验室,江苏南京210037

出　　处：《林产化学与工业》2015年第3期80-84,共5页Chemistry and Industry of Forest Products

基　　金：江苏高校优势学科建设工程资助项目(无编号)

摘　　要：以DMAc为溶剂,三乙胺为缚酸剂,十二酰氯为反应试剂,对羧甲基纤维素进行疏水改性,制备表面活性剂十二烷基酯化的羧甲基纤维素(CMC-R)。羧甲基纤维素与十二酰氯的质量比为1∶0.4,反应最佳温度为60℃,时间5 h。将合成的纤维素基表面活性剂CMC-R应用于旧新闻纸(ONP)脱墨,结果表明,单独使用CMC-R能提高废纸浆白度2.2%(ISO),纸浆的残余油墨量减少457.66 mm2/m2,减少了29.4%。而CMC-R与非离子表面活性剂脂肪醇聚氧乙烯醚(JFC)复配后,白度较CMC-R单独使用提高2.13%(ISO),残余油墨量减少3.18%。Lauroyl chloride esterified carboxymethyl cellulose（ CMC-R） was prepared by carboxymethyl cellulose（ CMC） and lauroyl chloride in the presence of triethylamine as acid binding agent and DMAc as solvent. The optimized CMC-R could be obtained as thecarboxymethyl cellulose reacted with lauroyl chloride with a ration of 1 ∶ 0. 4（ m / m） at 60 ℃ for 5 h. CMC-R was utilized in old news paper（ ONP） deinking. The results revealed that individual application of CMC-R could improve the pulp brightness by 2. 2%（ ISO）,and the residual ink decreased by 457. 66 mm2/ m2. Another increase of pulp brightness by 2. 13%and reduction of residual ink by 3. 18% could be realized when CMC-R and non-ionic surfactants were utilized together.

关 键 词：羧甲基纤维素 表面活性剂 旧新闻纸 脱墨 

分 类 号：TQ351[化学工程] TS749.7[轻工技术与工程—制浆造纸工程]