Effect of γ-ray radiation on the molecular weight and its distribution of bamboo cellulose

YANG Gesheng; WEI Mengyuan; SHAO Huili; HU Xuechao

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Effect of γ-ray radiation on the molecular weight and its distribution of bamboo cellulose

更新时间：2023-03-30

- Effect of γ-ray radiation on the molecular weight and its distribution of bamboo cellulose
- Journal of Radiation Research and Radiation Processing Vol. 25, Issue 3, Pages: 141-145(2007)
- 作者机构：
  
  1.东华大学纤维材料改性国家重点实验室　上海　200051
- 作者简介：
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YANG Gesheng, WEI Mengyuan, SHAO Huili, et al. Effect of γ-ray radiation on the molecular weight and its distribution of bamboo cellulose. [J]. Journal of Radiation Research and Radiation Processing 25(3):141-145(2007)
DOI：

YANG Gesheng, WEI Mengyuan, SHAO Huili, et al. Effect of γ-ray radiation on the molecular weight and its distribution of bamboo cellulose. [J]. Journal of Radiation Research and Radiation Processing 25(3):141-145(2007) DOI：

摘要

采用,60,Co γ射线对造纸级竹纤维素浆粕进行辐照处理，用粘度法及凝胶渗透色谱法表征了辐照处理后竹纤维素的分子量及分子量分布的变化规律，并推出其辐射裂解的,G,(s)值为0.94μmol•J,－1,。结果表明，竹纤维素是较易辐射裂解的聚合物，竹纤维素的平均聚合度(或相对分子量)是吸收剂量的函数，随着吸收剂量的增加，竹纤维素分子量降低，分子量分布变窄。

Abstract

Bamboo cellulose pulp was irradiated in air by ,60,Co γ-rays. Effects of γ-ray irradiation on the molecular weight and its distribution of bamboo cellulose were investigated by viscosimetry and gel permeation chromatography. The ,G,(s) value was estimated at 0.94μmol•J,-1,. The results showed that molecular weight of irradiated bamboo cellulose decreased and the molecular weight distribution narrowed with increasing dose.

关键词

竹纤维素γ辐射分子量分子量分布G(s)值

Keywords

Bamboo celluloseIrradiationMolecular weightMolecular weight distributionG(s) value

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