林产化学与工业2023，Vol.43Issue(6)：1-7,7.DOI:10.3969/j.issn.0253-2417.2023.06.001
竹纳米纤维素膜制备、表征及其性能研究
Preparation,Characterization and Properties of Bamboo Nanocellulose Film
摘要
Abstract
To prepare renewable biomass-based membrane materials with excellent mechanical properties,high light transmittance,good water vapor and oxygen barrier properties,bamboo nanocellulose(B-CNF)was prepared from bleached sulfate bamboo pulp fibers(BP),and then the molecular structure of cellulose in bamboo fibers was modified by oxidation with sodium periodate to prepare bamboo nanocellulose membrane material using bamboo as matrix.When B-CNF was oxidized and treated with NaIO4 for 0.5,1.5 and 3 h,the resulting oxidized bamboo nanocellulose was labeled as OB-CNF-0.5,OB-CNF-1.5 and OB-CNF-3,respectively,and the corresponding prepared membrane materials were labeled as OBF-0.5,OBF-1.5 and OBF-3.The membrane material prepared by B-CNF was named as BF.The membrane materials were characterized by Fourier transform infrared spectrometer(FT-IR),scanning electron microscope(SEM),and atomic force microscope(AFM)and other methods,and their mechanical properties,light transmission properties,water vapor and oxygen barrier properties were tested.The results showed that the oxidation of periodate could successfully introduce aldehyde groups in the long chain of cellulose molecules of bamboo fibers.As the oxidation time of periodate was extended to 3.0 h,the content of aldehyde groups in bamboo nanocellulose increased to 1.23 mmol/g.Compared with BF,with the extension of oxidation time,the bamboo nanocellulose-based membrane material would gradually develop a layered structure.The light transmission at the wavelength of 600 nm increased from 82.24%to 97.49%,the water vapor transmission(WVTR)decreased from 0.35 g·mm/(m2·h·kPa)to 0.13 g·mm/(m2·h·kPa),and the oxygen transmission(OTR)decreased from 4.37×10-3 cm3/(m2·d·Pa)to 1.68×10-5 cm3/(m2·d·Pa).The comprehensive performance of the membrane material OBF-1.5 was great,with tensile strength of 42.85 MPa,elongation at breakof8.88%,lighttransmission over90%at600 nm,water vapor transmission of 0.14 g·mm/(m2·h·kPa)and oxygen transmission of 1.68×10-5 cm3/(m2·d·Pa)关键词
竹材/膜材料/阻隔性能/透光性能Key words
bamboo wood/membrane material/barrier properties/light transmittance分类
化学化工引用本文复制引用
李岷钊,朱恩清,杨静,杨海艳,王大伟,史正军..竹纳米纤维素膜制备、表征及其性能研究[J].林产化学与工业,2023,43(6):1-7,7.基金项目
国家自然科学基金资助项目(31971741) （31971741）
