Lignin characteristics of steam exploded bamboo residue during hot pressing

SHANG Na-na; YE Xiao; HUANG Li-shuang; JIN Zhen-fu

doi:10.11833/j.issn.2095-0756.2012.03.015

Volume 29 Issue 3

May 2012

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SHANG Na-na, YE Xiao, HUANG Li-shuang, JIN Zhen-fu. Lignin characteristics of steam exploded bamboo residue during hot pressing[J]. Journal of Zhejiang A&F University, 2012, 29(3): 420-425. doi: 10.11833/j.issn.2095-0756.2012.03.015

Citation:

SHANG Na-na, YE Xiao, HUANG Li-shuang, JIN Zhen-fu. Lignin characteristics of steam exploded bamboo residue during hot pressing[J]. Journal of Zhejiang A&F University, 2012, 29(3): 420-425. doi: 10.11833/j.issn.2095-0756.2012.03.015

Lignin characteristics of steam exploded bamboo residue during hot pressing

doi: 10.11833/j.issn.2095-0756.2012.03.015

1.
School of Engineering，Zhejiang A & F University，Lin’an 311300，Zhejiang，China

More Information

Corresponding author: JIN Zhen-fu
Received Date: 2011-08-22
Rev Recd Date: 2011-12-02
Publish Date: 2012-06-20

Abstract

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） yields of lignin directly extracted with dioxane-water from steam exploded bamboo pulp （SEBPL） and binderless board （SEBBL） were higher than that of milled bamboo lignin （MBL）. Also，yield of sebbl was lower than 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 ℃. （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.［Ch，5 fig. 1 tab. 15 ref.］

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通讯作者: 陈斌, bchen63@163.com

1.
沈阳化工大学材料科学与工程学院沈阳 110142

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Lignin characteristics of steam exploded bamboo residue during hot pressing

1. School of Engineering，Zhejiang A & F University，Lin’an 311300，Zhejiang，China

Corresponding author: JIN Zhen-fu

Received Date: 2011-08-22

Rev Recd Date: 2011-12-02

Publish Date: 2012-06-20

Key words:

forest engineering /
bamboo residue /
steam explosion treatment /
binderless board /
fourier transform infrared spectroscopy （FTIR） /
thermo-gravimetry （TG）/differential scanning calorimetry （DSC）

Abstract: 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） yields of lignin directly extracted with dioxane-water from steam exploded bamboo pulp （SEBPL） and binderless board （SEBBL） were higher than that of milled bamboo lignin （MBL）. Also，yield of sebbl was lower than 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 ℃. （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.［Ch，5 fig. 1 tab. 15 ref.］

Lignin characteristics of steam exploded bamboo residue during hot pressing

doi: 10.11833/j.issn.2095-0756.2012.03.015

Abstract

References

Proportional views

通讯作者: 陈斌, bchen63@163.com

Related

Proportional views