纳米羧甲基淀粉在微涂纸中的应用  

Application of Nano Carboxymethyl Starch in Micro Weight Coated Paper

作　　者：陈启杰[1] 董徐芳 周丽玲[1] 郑学铭 王萍[1] 

机构地区：[1]长沙理工大学化学与生物工程学院,湖南长沙410076

出　　处：《林产化学与工业》2017年第5期107-112,共6页Chemistry and Industry of Forest Products

基　　金：国家自然科学基金资助项目(31500495);湖南省自然科学基金资助项目(14JJ3085)

摘　　要：采用双螺杆挤压技术制备了纳米羧甲基淀粉(NCMS),并研究其作为涂布胶黏剂用于微量涂布纸的性能,结果表明:颗粒达纳米级,且颗粒平面较平整;NCMS和氧化淀粉均为负电性,且NCMS的负电荷密度较低;NCMS具有优良的成膜性,且膜强度高,拉伸强度4.67 MPa,断裂伸长率为26.9%。NCMS取代氧化淀粉制备轻涂纸涂料,能显著提高涂料的保水性能,当NCMS用量14%时,涂料的保水值为43.6 g/m^2,涂布纸的印刷表面强度为0.89 m/s,纸页的纵向抗张指数为47.8(N·m)/g,横向抗张指数为21.7(N·m)/g,油墨吸收性为36.8%,印刷光泽度61%。与20%普通氧化淀粉相比,保水性能提高25.3%,涂料的黏度下降12.4%,制得的涂布纸的印刷表面强度、抗张强度均有不同程度提高。In this study,the nano carboxymethy starch（ NCMS） was prepared by dual screw extrusion and was used as coating adhesive in micro weight coated paper（ MWC）. The results showed that the surface of NCMS particle was smooth and it had excellent film-forming and high film strength. The tensile strength of film can reach to 4. 67 MPa,breaking elongation 26. 9%.The negative charge density of NCMS is lower than that of common oxidized starch. For the paper coating formula of micro weight coated paper,when the dosage of NCMS used as the coating adhesive was 14%,the water retention properties of coating was increased evidently and the water retention value was 43. 6 g/m^2; the IGT printing surface strength of MWC was 0. 89 m/s; the longitudinal and transverse tensile index was 47. 8 and 21. 7（ N·m）/g separately; the ink absorption of MWC was 36. 8% and61% separately. Comparing with 20% common oxidized starch coating formulation,the water retention properties of coating was increased by 25. 3%,coating viscosity was decreased by 12. 4%,and the IGT printing surface strength and tensile index of MWC were improved in different degree.

关 键 词：纳米羧甲基淀粉 涂料 胶黏剂 纸张性能 

分 类 号：TQ35[化学工程] TS727[轻工技术与工程—制浆造纸工程]