2 composite paper with excellent mechanical strength and UV-resistance ability was fabricated by ultrasound blending or ball milling to mix aramid nanofiber and nano-TiO₂ based on mechanochemical mechanism. The effects of preparation method and nano-TiO₂ dosage on the strength and UV-resistance of the composite paper were investigated. The results showed that compared with traditional method of ultra-sound blending， ball milling could enhance the interface bonding between ANF and nano-TiO₂. When nano-TiO₂ dosage was 6%， the strength of paper fabricated by ball milling was 70.13 MPa， which was increased by 12% compared with that of paper made by ultra-sound blending. In addition， the strength retention rate of the composite paper made by ball milling was 81.5%， which was increased by 15.8 percentage points compared with the sample made by ultra-sound blending. The UV-resistance of the composite paper made by ball milling was also enhanced with increasing the dosage of nano-TiO₂.]]> 2022/11/21 0:00:00 SONG Shunxi,YUAN Baolong,JI Dexian,ZHANG Qian,YANG Bin,ZHANG Meiyun 4true 2022/11/21 0:00:00 LI Fangfang,ZHANG Meiyun,TAN Jiaojun,RUAN Shaowei,WU Juan,HONG Jia 3true 2 was prepared under the circumstance of optimal beating degree （70 °SR）. The oil-proof performance of the paper was improved by coating TEMPO-oxidized cellulose nanofibril （TCNF） and chitosan （CTS）. The effects on different amount of coating with oil-proof grade， hot oil resistance， solvent resistance and physical properties were also explored. The results showed that when the amount of coating of TCNF and CTS were 2.5 g/m² and 1.4 g/m² respectively， the oil-proof grade of paper reached the peak （grade 12） and the paper had excellent hot oil resistance， solvent resistance. Air permeability and thickness of paper was 0.003 μm/(Pa·s) and 106 μm, respectively.]]> 2022/11/21 0:00:00 XU Yan,YANG Bowen,YANG Weihong,ZHAO Zhiqiang,LIU Haitang,LIU Zhong 2true 6+） was analyzed and discussed. The resalts showed that the size of palladium nanoparticles （Pd NPs） decreased with the increase of lignin content. When the lignin content was 3.07%， the loading capacity of Pd NPs reached 0.50%， the catalytic efficiency of the composite catalytic materials for Cr⁶⁺ reached the maximum， and the complete degradation and transformation of Cr⁶⁺ to Cr³⁺ could be achieved within 8 min. Moreover， after 5 times recycling， the catalytic efficiency still reached more than 99%， good stability and reusability of the materials were showed by improving the general bonding strength through hot pressing.]]> 2022/11/21 0:00:00 HUANG Yuefeng,CHU Jingjing,ZHANG Lili,WANG Zhiguo 1true