Octadecylamine Graft-modified Cellulose Nanofiber and Its Reinforcement to Poly(butylene adipate-co-terephthalate) Composites  

作　　者：Leilei Hou Jinghuan Chen Jingang Liu 

机构地区：[1]China National Pulp and Paper Research Institute Co.,Ltd.,Beijing,100102,China [2]National Engineering Lab for Pulp and Paper,Beijing,100102,China

出　　处：《Paper And Biomaterials》2022年第3期42-50,共9页造纸与生物质材料（英文）

基　　金：financial support from the National Key Research and Development Program of China (Grant Nos. 2017YFB0307901 and 2017YFE010 2500)

摘　　要：Biodegradable polymers such as poly(butylene adipate-coterephthalate)(PBAT)have attracted great interest as alternatives to traditional petroleum-based polymers.Nonetheless,it is necessary to improve some properties of PBAT,such as mechanical strength.Cellulose nanofiber(CNF)can improve PBAT mechanical strength,but its dispersion and compatibility in the PBAT matrix require further improvement.In this study,octadecylamine(ODA)was utilized to graft-modify CNF to change the fiberto-fiber interaction and improve its compatibility with the PBAT matrix.PBAT composites with 1 wt%CNF were prepared using a masterbatch premixing method to avoid CNF aggregation during extrusion.The effects of ODA graft modification on CNF properties were studied;varying degrees of CNF modification were investigated for their effect on PBAT properties.ODA-modified CNF(OCNF)/PBAT melt-extruded composites possessing 17.2%higher tensile strength than pure PBAT polymer were obtained without affecting the thermal stability of PBAT.As a result,surface modification of CNF with ODA is an effective strategy for improving CNF-PBAT compatibility.

关 键 词：cellulose nanofiber OCTADECYLAMINE GLUTARALDEHYDE PBAT compatibility 

分 类 号：TQ327[化学工程—合成树脂塑料工业] TB332[一般工业技术—材料科学与工程]