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林产化学与工业 ›› 2015, Vol. 35 ›› Issue (3): 80-84.doi: 10.3969/j.issn.0253-2417.2015.03.014

• 研究报告 • 上一篇    下一篇

疏水改性羧甲基纤维素及其在废纸脱墨中的应用

贝俊杰, 曹云峰   

  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
  • 收稿日期:2014-04-08 出版日期:2015-06-25 发布日期:2015-07-03
  • 通讯作者: 曹云峰,博士生导师,研究方向为制浆造纸与清洁生产;E-mail:yunfcao@163.com。 E-mail:yunfcao@163.com
  • 作者简介:贝俊杰(1988—),男,浙江宁波人,硕士生,研究方向为制浆造纸
  • 基金资助:
    江苏高校优势学科建设工程资助项目(无编号)

Application of Hydrophobic Carboxymethyl Cellulose in Deinking

BEI Jun-jie, CAO Yun-feng   

  1. Jiangsu Provincial Key Laboratory of Pulp and Paper Science and Technology, Nanjing Forestry University, Nanjing 210037, China
  • Received:2014-04-08 Online:2015-06-25 Published:2015-07-03

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%。

关键词: 羧甲基纤维素, 表面活性剂, 旧新闻纸, 脱墨

Abstract: 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.

Key words: carboxymethyl cellulose, surfactant, ONP, deink

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