抗静电纤维素纳米晶体彩虹防伪标签膜的制备  

Preparation of Iridescence Anti-counterfeiting Label Films of Anti-electrostatic Nanocrystaline Celluloses

作　　者：万轩[1] 张亚运[1] 孙誉飞 李大纲[1] WAN Xuan ZHANG Ya-yun SUN Yu-fei LI Da-gang(Nanjing Forestry University, Nanj ing 210037, China)

机构地区：[1]南京林业大学,南京210037

出　　处：《包装工程》2017年第9期53-58,共6页Packaging Engineering

基　　金：国家自然科学基金(31670555);江苏省大学生创新创业训练计划(201610298027Z)

摘　　要：目的用简便、经济的方法制备性能良好、兼具抗静电性能与防伪性能的标签复合薄膜。方法以木质纤维为原料,在采用自然干燥法的基础上,外加磁场制备定向纳米四氧化三铁粒子(nano-Fe_3O_4)/纤维素纳米晶体(CNCs)抗静电彩虹防伪复合薄膜。综合分析复合薄膜四探针电导率、偏光显微镜、扫描电镜、衰减全反射傅里叶红外光谱、X射线衍射光谱等的测试结果。结果 nano-Fe_3O_4的加入及磁场定向可在不影响CNCs胆甾型液晶自组装形成彩色图案的情况下,提高复合膜导电性,且复合膜发挥最佳效果时,CNCs与nano-Fe_3O_4最佳质量比为20∶1。结论该标签膜兼具抗静电性能与防伪性能,具有一定的包装防伪应用价值。The work aims to prepare the label composite film with good properties, anti-electrostatic performance and anti-counterfeiting performance in a convenient and economic way.With wood fiber as raw material, based on natural seasoning and magnetic field, the directional ferroferric oxide nano-particles（nano-Fe3O4）/nanocrystaline cellulose（CNCs） anti-electrostatic iridescence anti-counterfeiting composite film was prepared.Composite film four-probe specific conductance, polarizing microscope, scanning electron microscope, attenuated total reflection Fourier infrared spectrum and X-ray diffraction spectrum, etc.were comprehensively analyzed.The testing showed that adding nano-Fe3O4 and magnetic field orientation could improve the film＇s conductivity without preventing CNCs cholesteric liquid crystal self-assembly from forming colorful pattern, besides, the best mass ratio of CNCs and Fe3O4 was 20∶1 when the composite film had the best effect.This label film has anti-electrostatic performance and anti-counterfeiting performance, and it has certain application value for packaging anti-counterfeiting.

关 键 词：纤维素纳米晶体 胆甾型液晶 标签防伪技术 抗静电复合材料 纳米FE3O4粒子 

分 类 号：TB484.6[一般工业技术—包装工程]