EBS和PP-g-MAH对聚丙烯/纳米二氧化钛共混物性能的影响  

Effect of EBS and PP-g-MAH on Properties of Polypropylene/Nano-TiO_(2)

作　　者：郭月圆 宋立新[1,2] 邵文君 张雨 刘欣[1,2] 刘立志[1] 史颖 GUO Yue-yuan;SONG Li-xin;SHAO Wen-jun;ZHANG Yu;LIU Xin;LIU Li-zhi;SHI Ying(Advanced Manufacturing Institute of Polymer Industry,Shenyang University of Chemical Technology,Shenyang 110142,China;College of Materials Science and Engineering,Shenyang University of Chemical Technology,Shenyang 110142,China)

机构地区：[1]沈阳化工大学高分子产业高端制造研究院,辽宁沈阳110142 [2]沈阳化工大学材料科学与工程学院,辽宁沈阳110142

出　　处：《塑料科技》2023年第12期11-16,共6页Plastics Science and Technology

摘　　要：纳米二氧化钛(TiO_(2))在聚丙烯(PP)中的分散性与材料的力学性能和抗菌性能密切相关。文章采用双螺杆挤出机将PP、TiO_(2)、N,N'-乙撑双硬脂酰胺(EBS)和马来酸酐接枝聚丙烯(PP-g-MAH)共混,制备出不同分散剂EBS含量的PP/TiO_(2)共混物,比较了分散剂EBS和增容剂PP-g-MAH对TiO_(2)在PP中分散性与抗菌效果的影响。结果表明:EBS和PP-g-MAH均能够提高TiO_(2)与PP的相容性,PP/TiO_(2)复合材料的力学性能和抗菌性能均有所提高。小分子EBS能够进入PP相区,导致PP晶体规整度降低,阻碍形成片晶结构。PP-g-MAH作为桥梁增加了TiO_(2)与PP的相容性并诱导PP提前结晶,使PP/TiO_(2)共混物具有更好的结晶结构和更高的抗菌活性。The dispersion of nano-titanium dioxide(TiO2)in polypropylene(PP)is closely related to the mechanical and antibacterial properties of the material.PP,TiO2,N,N'-ethylene bis-stearamide(EBS),and maleic anhydride grafted polypropylene(PP-g-MAH)were blended using a twin-screw extruder to prepare PP/TiO2 blends with different dispersant EBS content.The effects of dispersant EBS and compatibilizer PP-g-MAH on the dispersion and antibacterial effect of TiO2 in PP were compared.The results show that both EBS and PP-g-MAH can improve the compatibility between TiO2 and PP,resulting in enhanced mechanical and antibacterial properties of the PP/TiO2 blends.The small molecule EBS can enter the PP phase region,reducing the regularity of PP crystals and hindering the formation of lamellar crystal structures.PP-g-MAH,acting as a bridge,increases the compatibility between TiO2 and PP,inducing early crystallization of PP,leading to a better crystalline structure and higher antibacterial activity of the PP/TiO2 blends.

关 键 词：二氧化钛 马来酸酐接枝聚丙烯 N N'-乙撑双硬脂酰胺 相容性 抗菌活性 

分 类 号：TB332[一般工业技术—材料科学与工程]