Polymerization reactivity of sulfomethylated alkali lignin modified with horseradish peroxidase

详细信息    查看全文

• 作者：Dongjie Yang ; Xiaolei Wu ; Xueqing Qiu ; ^{xueqingqiu66@163.com" class="auth_mail} ; Yaqi Chang ; Hongming Lou
• 关键词：Sulfomethylated alkali lignin ; Horseradish peroxidase ; Polymerization ; Reactivity
• 刊名：Bioresource Technology
• 出版年：March, 2014
• 年：2014
• 卷：155
• 期：Complete
• 页码：418-421
• 全文大小：334 K

文摘

Alkali lignin (AL) was employed as raw materials in the present study. Sulfomethylation was conducted to improve the solubility of AL, while sulfomethylated alkali lignin (SAL) was further polymerized by horseradish peroxidase (HRP). HRP modification caused a significant increase in molecular weight of SAL which was over 20 times. It was also found to increase the amount of sulfonic and carboxyl groups while decrease the amount of phenolic and methoxyl groups in SAL. The adsorption quantity of self-assembled SAL film was improved after HRP modification. Sulfonation and HRP modification were mutually promoted. The polymerization reactivity of SAL in HRP modification was increased with its sulfonation degree. Meanwhile, HRP modification facilitated SAL鈥檚 radical-sulfonation reaction.