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Citation: Wu Guoqiang, Zhao Bian'an, Tang Aimin, Gao Jie. Modification of Wood Powder by Esterification[J]. Chinese Journal of Applied Chemistry, ;1994, 44(5): 75-78. shu

Modification of Wood Powder by Esterification

1.
Guangzhou Institute of Chemistry, Chinese Academy of Sciences, Guangzhou 510650

Received Date: 23 November 1993
Available Online: 8 April 1994

The wood powder samples were softened at about 300℃ after treatment with a mixture of sulfuric dioxide-diethvlamine-dimethyl sulfoxide (SO₂-DEA-DMSO).After esterification with a mixture of pyridine and acetic anhydride the samples showed a softening point of 260℃ and deformation of 70%,these values were 180℃ and 40%,respectively,when a mixture of polyformaldehyde-DMSO was used.The TGA resuIts indicated the decrease in thermostability of the esterified wood powder when it was pretreated by SO₂-DEA-DMSO,but not by paraformaldehyde-DMSO,The modified wood powder samples can be molded by hot pressing to give smooth,glossy and semitransparent sheets.
- wood powder,
- modification,
- esterification,
- thermoplasticity
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