کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1398334 | 984362 | 2012 | 6 صفحه PDF | دانلود رایگان |

Enzymatic polymerization of phenol catalyzed by horseradish peroxidase (HRP) has been carried out in aqueous micelle system using sodium dodecyl benzene sulfonate (SDBS) as a surfactant. The addition of SDBS to buffer greatly enhances the polymer yield. With a usage of SDBS over 0.4 g for 5 mmol of phenol monomer, the polymer could be obtained almost quantitatively. The number-molecular weight of the THF-soluble part determined by GPC is increased from 1100 to 2000 with increasing the dosage of SDBS. The phenol polymerization maintains high yields in aqueous micelle system over a wide pH range from 4 to 10. The activity of enzyme in buffer is so high that the phenol polymerization in aqueous micelle system could be completed only in 2 h with high yield. The resulting polymer is a kind of powdery material, which is partly soluble in DMF, DMSO and THF. IR analysis showed that the polymer structure contained a mixture of phenylene and oxyphenylene units. From TG analysis, the polymer was found to possess high thermal stability.
Figure optionsDownload as PowerPoint slideHighlights
► Enzymatic phenol polymerization could be carried out efficiently in aqueous micelle system.
► Phenol polymerization maintains high yield in aqueous micelle system over a wide pH range.
► The catalytic activity of HRP in aqueous micelle system is extremely high.
► Aqueous micelle is an environmentally benign system for the production of phenol polymer.
Journal: European Polymer Journal - Volume 48, Issue 3, March 2012, Pages 580–585