Radiation effect of γ-rays on lignin

CAI Yuting; CHENG Xiansu

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Radiation effect of γ-rays on lignin

更新时间：2023-03-30

- Radiation effect of γ-rays on lignin
- Journal of Radiation Research and Radiation Processing Vol. 26, Issue 5, Pages: 275-279(2008)
- 作者机构：
  
  1.福州大学　材料科学与工程学院　福州　350002
  2.闽江学院　化学与化学工程系　福州　350011
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CAI Yuting, CHENG Xiansu. Radiation effect of γ-rays on lignin. [J]. Journal of Radiation Research and Radiation Processing 26(5):275-279(2008)
DOI：

CAI Yuting, CHENG Xiansu. Radiation effect of γ-rays on lignin. [J]. Journal of Radiation Research and Radiation Processing 26(5):275-279(2008) DOI：

摘要

利用γ射线具有低能耗、洁净、环保等优点，对木质素进行辐射处理，并对辐射后的木质素的分子量及分子量分布和主要结构基团进行分析。实验结果表明，木质素经过γ 射线照射后，分子量及分子量分布增大，辐射效应主要以辐射交联为主。辐射前后的木质素的红外光谱相似，表明辐射并没有改变木质素的主要结构基团，并且木质素中的羟基不仅数量增多而且能更稳定存在。由,13,C-NMR图谱解析可知，碱木质素经过γ射线照射后，主要结构并没有受到破坏。

Abstract

Radiation effect of γ-rays on lignin was studied. The lignin irradiated by γ-rays was characterized by GPC, IR and ,13,C-NMR respectively. It has been shown that cross-link reaction is the key reaction under this experimental condition, while the molecular weight and molecular weight distribution of lignin is increased. IR spectra of irradiated lignin are similar to that of former lignin. The functional groups of irradiated lignin almost have not change compared with former lignin. Hydroxyl groups in irradiated lignin are not only increased but also more stable. It has been found that the main functional groups in the molecular structure of alkali lignin are not destroyed after γ-rays irradiation according to the analysis with,13,C-NMR.

关键词

γ射线木质素辐射效应

Keywords

γ-raysLigninRadiation effect

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