部分溶解微晶纤维素在橡胶中的微观形貌及补强作用  

Research on micro-morphology and reinforcing effect of partially dissolved microcrystalline cellulose in rubber

作　　者：李佩星 袁浩泽 王鑫钰 王欣 于程 孙举涛[1] LI Peixing;YUAN Haoze;WANG Xinyu;WANG Xin;YU Cheng;SUN Jutao(School of Polymer Science and Engineering,Qingdao University of Science and Technology,Qingdao 266042,China)

机构地区：[1]青岛科技大学高分子科学与工程学院,山东青岛266042

出　　处：《高校化学工程学报》2024年第6期924-931,共8页Journal of Chemical Engineering of Chinese Universities

基　　金：山东省自然科学基金(ZR2021ME106)。

摘　　要：针对纤维素的高结晶导致的难于溶解和深加工,采用1-丁基-3-甲基咪唑氯为介质,将微晶纤维素部分溶解后与橡胶直接进行干法混炼,制备了橡胶/纤维素复合材料。研究结果表明,未溶解部分的纤维素尺寸减小,而且已溶解的纤维素在橡胶混炼过程中可以原位析出直径为100 nm、长度为1μm左右的棒状再生纤维素,从而有效提高纤维素的补强作用。当混炼温度为80℃,添加0.83 phr纤维素/离子液体时,硫化胶的拉伸强度和撕裂强度相对于未添加纤维素改性橡胶分别提高了22.4%和45.4%。该方法基于常规的橡胶混炼技术,过程中无任何废液排放,是一种绿色高效的纤维素利用方式。Cellulose has problems in dissolution and deep processing due to its high crystallinity.In this study,rubber/cellulose composites were prepared by partially dissolving microcrystalline cellulose using 1-butyl-3-methylimidazolium chloride as a medium,and then dry blending directly with rubber.The results show that the size of the undissolved part of cellulose is decreased,and the dissolved cellulose could be precipitated in situ to form rod-like regenerated cellulose with a diameter of 100 nm and a length of about 1μm during the rubber mixing process,which effectively improves the reinforcing effect of cellulose.When the mixing temperature was 80℃and 0.83 phr cellulose/ionic liquid was added,the tensile and tear strengths of the vulcanised rubber increased by 22.4%and 45.4%,respectively,compared to the rubber with no cellulose.The method is based on conventional rubber mixing technology,and the process is a green and efficient way of utilizing cellulose without any waste liquid discharge.

关 键 词：微晶纤维素 离子液体 再生纤维素 橡胶 补强 

分 类 号：TQ330.38[化学工程—橡胶工业] TQ333.1