Physical properties and chemical composition of a hemp core

TANG Xiao-li; MA Ling-fei

doi:10.11833/j.issn.2095-0756.2010.05.026

Volume 27 Issue 5

Oct. 2010

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TANG Xiao-li, MA Ling-fei. Physical properties and chemical composition of a hemp core[J]. Journal of Zhejiang A&F University, 2010, 27(5): 794-798. doi: 10.11833/j.issn.2095-0756.2010.05.026

Citation:

TANG Xiao-li, MA Ling-fei. Physical properties and chemical composition of a hemp core[J]. Journal of Zhejiang A&F University, 2010, 27(5): 794-798. doi: 10.11833/j.issn.2095-0756.2010.05.026

Physical properties and chemical composition of a hemp core

doi: 10.11833/j.issn.2095-0756.2010.05.026

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

More Information

Corresponding author: MA Ling-fei
Publish Date: 2010-10-20

Abstract

With reference to the national standard for physical and chemical properties of wood and the raw material for paper，the main physical and mechanical properties of a hemp core were analyzed. Results showed that the air-dry density of the hemp core wall was 0.240 gcm-3；whereas the hemp core was 0.193 gcm-3；the air-dried tangential shrinkage ratio for the hemp core wall was 5.68%，but for the hemp core it was 7.37%. Water absorption for the hemp core and the hemp core wall increased over time maintaining a balance for up to 12 d. Additionally，holocellulose of the hemp core was 799.1 gkg-1，the acid insoluble lignin was 191.6 gkg-1，the hot water extractive was 56.6 gkg-1，the cold water extractive was 42.6 gkg-1，and the benzene and alcohol extractive was 57.2 gkg-1. Also，the 10.0 gkg-1 NaOH extractive was 308.1 gkg-1，the ash content was 14.8 gkg-1，and the moisture content was 95.8 gkg-1.［Ch，2 fig. 5 tab. 7 ref.］
- forest engineering,
- hemp core,
- physical property,
- chemical composition

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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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Physical properties and chemical composition of a hemp core

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

Corresponding author: MA Ling-fei

Publish Date: 2010-10-20

Key words:

Abstract: With reference to the national standard for physical and chemical properties of wood and the raw material for paper，the main physical and mechanical properties of a hemp core were analyzed. Results showed that the air-dry density of the hemp core wall was 0.240 gcm-3；whereas the hemp core was 0.193 gcm-3；the air-dried tangential shrinkage ratio for the hemp core wall was 5.68%，but for the hemp core it was 7.37%. Water absorption for the hemp core and the hemp core wall increased over time maintaining a balance for up to 12 d. Additionally，holocellulose of the hemp core was 799.1 gkg-1，the acid insoluble lignin was 191.6 gkg-1，the hot water extractive was 56.6 gkg-1，the cold water extractive was 42.6 gkg-1，and the benzene and alcohol extractive was 57.2 gkg-1. Also，the 10.0 gkg-1 NaOH extractive was 308.1 gkg-1，the ash content was 14.8 gkg-1，and the moisture content was 95.8 gkg-1.［Ch，2 fig. 5 tab. 7 ref.］

Physical properties and chemical composition of a hemp core

doi: 10.11833/j.issn.2095-0756.2010.05.026

Abstract

References

Proportional views

通讯作者: 陈斌, bchen63@163.com

Related

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