Lignin Characteristics of Steam Exploded Bamboo Residue during Hot Pressing

被引:0
|
作者
Shang Nana [1 ]
Ye Xiao [1 ]
Huang Lishuang [1 ]
Jin Zhenfu [1 ]
机构
[1] School of Engineering,Zhejiang A & F University
关键词
forest engineering; bamboo residue; steam explosion treatment; binderless board; infrared spectroscopy(FTIR); thermo-gravimetry(TG)/differential scanning calorimetry(DSC);
D O I
暂无
中图分类号
TS743 [制浆法];
学科分类号
082201 ; 082903 ;
摘要
bamboo(Phyllostachys edulis) residue was subjected to steam explosion treatment to produce superior fibers for binderless boards.Then,lignin was isolated from extract-free bamboo meal,steam exploded pulp,and binderless boards with characteristics being determined by thermo-gravimetry (TG),differential scanning calorimetry (DSC),and fourier transform infrared spectroscopy (FTIR).Results showed that:1) the yield of lignin directly extracted with dioxane-water from steam exploded bamboo pulp(SEBPL) and binderless board (SEBBL) was higher than that of milled bamboo lignin (MBL).Also,the yield of SEBBL was lower than that of SEBPL.2) FTIR results showed cleavage of ester and ether bonds between lignin and p-coumaric acid during steam explosion treatment.3) SEBBL showed two glass transitions at 115℃and 200℃, while MBL gave one glass transitions at 155℃.And 4) the modulus of rupture(MOR) and modulus of elasticity(MOE) decreased with an increase in steaming time;whereas internal bonding(IB) increased.In all cases the dimensional stability of boards did not exceed the maximum requirements for type GB/T 11718- 1999.
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页码:80 / 80
页数:1
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