SYNTHESIS AND CHARACTERIZATION OF GLYCIDYL METHACRYLATE GRAFTED EUCALYPTUS FIBERS
Graft-copolymerization of bleached eucalyptus fibers was successfully carried out with glycidyl methacrylate(GMA)monomer by using Fe2+-thioureadioxid-H2O e as an initiator system.The cellulose poly(GMA)graft copolymers(CPGMA)was characterized via Fourier transform infrared spectroscopy(FTIR),scanning electron microscope(SEM),13C cross polarization magic angle spinning NMR spectra(13C CP/MAS NMR),X-ray diffraction(XRD)and thermal gravimetric analysis(TGA).The results showed the percent grafting was from 0%to244%,the epoxy group content from 0 to 4.37 mmol/g,and the grafting efficiency over 97%when the percent grafting exceeds 38%.Additionally,the CPGMA morphological analysis denoted that the grafting not only takes place on the fiber surface,but also inside the fiber wall.Both FTIR and solid state 13C CP/MAS NMR analysis could prove the occurrence of grafting.The fiber crystallinity could be strongly affected by the percent grafting,decreasing from 69.8%(eucalyptus pulp)to 26.2%at the percent grafting of 198%.TGA analytical data indicated GMA grafting decreases the thermal stability of eucalyptus fibers at the percent grafting of 198%.
eucalyptus fibers graft copolymerization Fe2+-thioureadioxid-H2O2 glycidyl methacrylate
Lifang Guo Jun Huang Jianfeng Xi Qingyang Ye Huamin Zhai
Jiangsu Provincial Key Lab of Pulp and Paper Science and Technology Nanjing Forestry University Nanjing,210037,China
国际会议
第五届制浆造纸新技术国际研讨会(ISETPP)暨第三届国际造纸与环境学术大会(IPEC)
广州
英文
1-6
2016-11-07（万方平台首次上网日期，不代表论文的发表时间）