CAJ | 학술논문

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%。
이DMAc위용제,삼을알위박산제,십이선록위반응시제,대최갑기섬유소진행소수개성,제비표면활성제십이완기지화적최갑기섬유소( CMC-R)。최갑기섬유소여십이선록적질량비위1∶0.4,반응최가온도위60℃,시간5 h。장합성적섬유소기표면활성제CMC-R응용우구신문지(ONP)탈묵,결과표명,단독사용CMC-R능제고폐지장백도2.2%(ISO),지장적잔여유묵량감소457.66 mm2/m2,감소료29．4%。이CMC-R여비리자표면활성제지방순취양을희미( JFC)복배후,백도교CMC-R단독사용제고2.13%(ISO),잔여유묵량감소3.18%。
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.