摘要
利用原位生长法制备了轻质碳酸钙(PCC)加填的植物纤维纸基(PCCP)/金属有机骨架化合物(MOFs,即Zn2(BTC)4,标记为LCP-1)复合材料(PCCP/LCP-1),探讨了PCC加填量对复合材料气体吸附性能的影响;采用傅里叶变换红外光谱仪(FT-IR)、X射线衍射仪(XRD)、扫描电子显微镜(SEM)、热重分析仪(TGA)和氮气吸附法(BET)研究了LCP-1与植物纤维的键合方式以及复合材料的表面形貌、比表面积、热稳定性和吸附行为。结果表明,LCP-1与植物纤维之间以酯键结合,PCC加填量的增加可使纸张纤维网络体系暴露出更多的游离羟基,有利于提高LCP-1在PCCP表面的沉积率。此外,PCC的位阻效应降低了LCP-1在PCCP表面的生长空间,导致LCP-1尺寸变小。BET实验表明,与未添加PCC的复合材料相比,添加PCC可显著提高复合材料的吸附性能,且随着PCC加填量的增加,复合材料的氮气吸附量也逐渐提高。
Cellulosic fiber paper base containing various filler content(PCCP)/metal-organic framework compound(MOFs[LCP-1])com posite(PCCP/LCP-1)was prepared by in-situ growth method.The present work investigated the effect of filler precipitated calcium carbonate(PCC)content on the gas adsorption performance.The bonding modes of LCP-1 and cellulosic fibers,as well as the surface morphology,spe cific surface area,thermal stability and adsorption behavior of composites were characterized by FT-IR,XRD,SEM,TGA and BET.Results showed that ester bonds existed between LCP-1 and the cellulosic fibers.The increase of PCC content helped to expose more free hydroxyl groups in cellulosic paper,which was beneficial to the deposition rate of LCP-1 on the paper surface.Moreover,the addition of PCC could confine the growing space of LCP-1,resulting in the smaller size of LCP-1.Nitrogen adsorption data showed that the use of PCC could signifi cantly improve the adsorption performance of the composite.The adsorption amount increased as the PCC addition increased from 10%to 40%compared with the composite without PCC.
作者
张美云
解宏滨
宋顺喜
聂景怡
杨强
谭蕉君
赵梦雅
鲁鹏
ZHANG Meiyun;XIE Hongbin;SONG Shunxi;NIE Jingyi;YANG Qiang;TAN Jiaojun;ZHAO Mengya;LU Peng(National Demonstration Center for Experimental Light Chemistry Engineering Education,Key Lab of Paper Based Functional Materials of China National Light Industry,Shaanxi Provincial Key Lab of Papermaking Technology and Specialty Paper Development,Shaanxi University of Science and Technology,Xi’an,Shaanxi Province,710021;Guangxi Key Lab of Clean Pulp&Papermaking and Pollution Control,Nanning,Guangxi Zhuang Autonomous Region,530004)
出处
《中国造纸学报》
CAS
CSCD
北大核心
2020年第1期20-25,共6页
Transactions of China Pulp and Paper
基金
国家重点研发计划(2017YFB0308300)
广西清洁化制浆造纸与污染控制重点实验室开放基金资助(KF201701)
陕西省重点研发计划(2017GY-140)
陕西省重点科技创新团队计划(2017KCT-02)。
