摘要
通过碱法先将纤维素(CE)溶解,破坏其氢键,再通过交联技术和冷冻干燥技术制备得到具有很好成形性和柔韧性的纤维素气凝胶。将纤维素气凝胶与溶剂热法制备的超细氧化锌(ZnO)通过浸泡法进行复合,得到了CE/ZnO复合气凝胶。通过X射线衍射(XRD)、扫描电镜(SEM)和元素能量散射(EDS)技术对复合气凝胶进行了结构表征,证明了两者的复合是成功的。对复合气凝胶的抗菌性能进行研究,结果表明:随着ZnO用量的增加,复合气凝胶的抗菌性能也在提高。当纤维素气凝胶与ZnO的质量比为1∶2时,所得复合气凝胶CE/ZnO-020抗菌效果达到最好,抗菌率达到95.25%。
Cellulose(CE)was first dissolved by alkali method,and its hydrogen bond was destroyed.Then cellulose aerogels were prepared by cross-linking technology and freeze drying technology.It had good formability and flexibility.The cellulose aerogels were composited with superfine ZnO,which was obtained by solvothermal method,by immersion method to prepare cellulose/superfine ZnO(CE/ZnO)composite aerogels.The composite aerogels were characterized by X-ray diffraction(XRD),scanning electron microscopy(SEM)and elemental energy scattering(EDS).The results showed that the compositing was successful.At the same time,the composite aerogels were endowed with antibacterial properties.The antibacterial properties of the composite aerogels were also studied,and the results showed that the antibacterial activity of the composite aerogels improved with the increase of ZnO dosage.When the mass ratio of cellulose to ZnO was 1∶2,the antibacterial effect of the obtained composite aerogel CE/ZnO-020 was the best,and the antibacterial rate reached 95.25%.
作者
杨嵘晟
朱俊芳
冯树波
YANG Rongsheng;ZHU Junfang;FENG Shubo(Bayin Guoleng Vocational and Technical College,Korla 841000,China;College of Chemical and Pharmaceutical Engineering,Hebei University of Science and Technology,Shijiazhuang 050018,China)
出处
《生物质化学工程》
CAS
北大核心
2019年第5期39-43,共5页
Biomass Chemical Engineering
关键词
纤维素
超细氧化锌
气凝胶
抗菌
cellulose
superfine ZnO
aerogels
antibacterial
