基于高得率浆的纤维素微纤丝的制备及其在浆张增强中的应用  

Preparation of Lignin Contained Cellulose Microfibril Based on High Yield Pulps and Its Application in Enhancing Handsheets' Physical Properties

作　　者：王思 魏继国 张方东[1] 刘苇[1] 侯庆喜[1] WANG Si;WEI Jiguo;ZHANG Fangdong;LIU Wei;HOU Qingxi(Tianjin Key Lab of Pulp & Paper,Tianjin University of Science & Technology,Tianjin,300457;He'nan Jiaozuo Ruifeng Paper Co.,Ltd.,Jiaozuo,He'nan Province,454950)

机构地区：[1]天津科技大学天津市制浆造纸重点实验室,天津300457 [2]河南焦作瑞丰纸业有限公司,河南焦作454950

出　　处：《中国造纸》2019年第3期1-8,共8页China Pulp & Paper

基　　金：国家自然科学基金项目(31770634);天津市自然科学基金项目(17 JCYBJC20600);天津科技大学青年教师创新基金(2015LG30)

摘　　要：本研究采用化学和机械相结合的方法处理杨木P-RC APMP(木素含量22. 73%),制备了一种含木素的纤维素微纤丝(Lignin contained cellulose microfibril,L-CMF),对其进行了分析和表征;并将L-CMF应用于浆张抄造,研究了L-CMF对浆张物理性能的影响。结果表明,采用TEMPO氧化法与高压均质相结合所制备的L-CMF L-CMF能有效提高漂白硫酸盐针叶木浆(BSKP)、杨木P-RC APMP以及两者配抄后浆张的物理强度。当L-CMF添加量为7%,杨木P-RC APMP配比为30%时,L-CMF对浆张的增强效果尤为明显,浆张的抗张指数和耐破指数分别比空白样提高30. 2%和50. 4%;但L-CMF的加入会使浆张的松厚度、白度和不透明度略有降低。To extend the application of high yield pulps,the lignin contained cellulose microfibril(L-CMF)was prepared by treating poplar P-RC APMP(lignin content of 22.73%)with chemical and mechanical methods.The resultant L-CMF was obtained by TEMPO-mediated oxidation and homogenization treatment.The L-CMF’main characteristics were analyzed,and their application in enhancing handsheets’physical properties was also investigated.The results showed that the diameter of the L-CMF was 200~400 nm,and carboxyl content was 1165.29 mmol/kg;the L-CMF could effectively improve the physical strength of all handsheets prepared by BSKP,poplar P-RC APMP,and the mixture of these two kind of pulps with different ratios.When the proportion of P-RC APMP in the mixtures was 30%and the dosage of LCMF was 7.0%,the physical strength of the handsheet was improved significantly,the tensile index and burst index were increased by 30.2%and 50.4%,respectively.However,the bulk,brightness,and opacity were slightly reduced.

关 键 词：高得率浆 P-RCAPMP 含木素的纤维素微纤丝 物理强度 

分 类 号：TS727.2[轻工技术与工程—制浆造纸工程]