Grafting of regenerated cellulose membrane by surface-initiated atom transfer radical polymerization and its pH-resposive behavior

2010 ◽  
Vol 22 (12) ◽  
pp. 1948-1952 ◽  
Author(s):  
Kai Pan ◽  
Xiaowei Zhang ◽  
Jie Zhu ◽  
Bing Cao
Keyword(s):  
Atom Transfer Radical Polymerization ◽  
Radical Polymerization ◽  
Regenerated Cellulose ◽  
Cellulose Membrane ◽  
Atom Transfer

Modification of regenerated cellulose ultrafiltration membranes by surface-initiated atom transfer radical polymerization

2008 ◽  
Vol 311 (1-2) ◽  
pp. 225-234 ◽  
Author(s):  
Nripen Singh ◽  
Zhen Chen ◽  
Namrata Tomer ◽  
S. Ranil Wickramasinghe ◽  
Neil Soice ◽  
...  
Keyword(s):  
Atom Transfer Radical Polymerization ◽  
Radical Polymerization ◽  
Regenerated Cellulose ◽  
Atom Transfer ◽  
Ultrafiltration Membranes

scholarly journals Modification of Electrospun Regenerate Cellulose Nanofiber Membrane via Atom Transfer Radical Polymerization (ATRP) Approach as Advanced Carrier for Laccase Immobilization

Polymers ◽  
2021 ◽  
Vol 13 (2) ◽  
pp. 182
Author(s):  
Shuo Zeng ◽  
Jinwei Shi ◽  
Anchao Feng ◽  
Zhao Wang
Keyword(s):  
Atom Transfer Radical Polymerization ◽  
Radical Polymerization ◽  
Enzyme Immobilization ◽  
Regenerated Cellulose ◽  
Regenerate Cellulose ◽  
Atom Transfer ◽  
Nanofiber Membrane ◽  
Sem Images ◽  
Before And After ◽  
Laccase Immobilization

This study aimed to modify an electrospun regenerated cellulose (RC) nanofiber membrane by surface grafting 2-(dimethylamino) ethyl methacrylate (DMAEMA) as a monomer via atom transfer radical polymerization (ATRP), as well as investigate the effects of ATRP conditions (i.e., initiation and polymerization) on enzyme immobilization. Various characterizations including XPS, FTIR spectra, and SEM images of nanofiber membranes before and after monomer grafting verified that poly (DMAEMA) chains/brushes were successfully grafted onto the RC nanofiber membrane. The effect of different ATRP conditions on laccase immobilization was investigated, and the results indicated that the optimal initiation and monomer grafting times were 1 and 2 h, respectively. The highest immobilization amount was obtained from the RC-Br-1h-poly (DMAEMA)-2h membrane (95.04 ± 4.35 mg), which increased by approximately 3.3 times compared to the initial RC membrane (28.57 ± 3.95 mg). All the results suggested that the optimization of initiation and polymerization conditions is a key factor that affects the enzyme immobilization amount, and the surface modification of the RC membrane by ATRP is a promising approach to develop an advanced enzyme carrier with a high enzyme loading capacity.

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