Effect of Alkali Depolymerization on Corn Stalk

Feng-zhi WANG; Yu-long MA

doi:10.14028/j.cnki.1003-3726.2015.06.007

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Effect of Alkali Depolymerization on Corn Stalk

更新时间：2022-09-18

- Effect of Alkali Depolymerization on Corn Stalk
- Polymer Bulletin Vol. 28, Issue 6, Pages: 50-54(2015)
- 作者机构：
  
  1.宁夏大学能源化工国家重点实验室培育基地，银川　750021
  2.宁夏能源化工重点实验室，银川　750021
- 作者简介：
- 基金信息：
- DOI：10.14028/j.cnki.1003-3726.2015.06.007
  CLC：
- Published：2015-06，
  
  Received：13 August 2014，
  
  Revised：23 December 2014，
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Feng-zhi WANG, Yu-long MA. Effect of Alkali Depolymerization on Corn Stalk. [J]. Polymer Bulletin 28(6):50-54(2015)
DOI：

Feng-zhi WANG, Yu-long MA. Effect of Alkali Depolymerization on Corn Stalk. [J]. Polymer Bulletin 28(6):50-54(2015) DOI： 10.14028/j.cnki.1003-3726.2015.06.007.

摘要

以玉米秸秆为研究对象

氢氧化钠为解聚剂

研究了碱解聚前后玉米秸秆组份、表面形态、化学官能团和纤维结晶度的变化。结果表明:玉米秸秆中木质素的主要组成单体是H-木质素

解聚液中的酚类物质有 4-羟基苯甲醛、香草醛、紫丁香醛、对香豆酸和阿魏酸。玉米秸秆经碱解聚

表面形态变得疏松而多孔

红外光谱下木质素的特征吸收峰消失

85%的木质素和52%的半纤维素被脱除

而纤维素的相对含量增加

结晶度增大。说明碱解聚有利于后续酶解和(或)其它生化方法的实施

以实现秸秆纤维的高值转化。

Abstract

The objective of this study was to investigate the changes of component

surface morphology

functional groups

and crystallinity of corn stalk before and after depolymerization with NaOH. The results showed that H-lignin was mainly constitutional unit of lignin in corn stalk. The phenolic compounds in liquid of the depolymerized corn stalk were 4- hydroxybenzaldehyde

vanilline

lilac aldehyde

p-coumaric acid

and ferulic acid. After alkali depolymerization

the surface morphology of corn stalk became loose and porous

the characteristic absorption peak of lignin disappeared in infrared spectroscopy

about 85% of lignin and 52% of hemicellulose were removed and thereby resulted in the increase of relative content and crystallinity of cellulose. These results may be beneficial to further enzymolysis and/or other biochemical methods for high value transformation of straw fiber.

关键词

玉米秸秆碱解聚木质素酚类物质

Keywords

Corn stalkAlkaliDepolymerizationLigninPhenolic compound 10. 14028/j. cnki. 1003-3726. 2015. 06. 007

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