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| Component Separation and Structure Characterization of Poplar Based on Catalyzed-ethanol Pulping |
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| DOI：10.11981/j.issn.1000-6842.2017.04.6 |
| Key Words:catalyzed-ethanol pulping； poplar； component separation； structure characterization |
| Fund Project:河南工程学院博士基金(D2015016)；河南省高等学校重点科研项目(15A430019)。 |
| Author Name | Affiliation | | 张 浩 | 河南工程学院材料与化学工程学院，河南郑州，450000 | | 周丰伟 | 河南工程学院材料与化学工程学院，河南郑州，450000 | | 庄洛欣 | 河南工程学院材料与化学工程学院，河南郑州，450000 |
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| Abstract: |
| The catalyst system containing 4-methyl-2-pentanone, dimethyl sulfoxide and fomic acid was mixed with ethanol to separate the component of poplar based on catalyzed ethanol pulping and the separated products were characterized. The results showed that the chemical and crystal structures of separated cellulose were remained very well and the content of α-cellulose was 85.2%. Compared with the milled wood lignin, the ether bond at 152.7 ppm of separated lignin was damaged. And the weak acidic environment led to guaiacyl condensation and degradation of β-O-4 structure. |
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