Novel Atom Transfer Radical Polymerization Method to Yield Copper-Free Block Copolymeric Biomaterials

2013 ◽  
Vol 214 (12) ◽  
pp. 1321-1325 ◽  
Author(s):  
Justin R. Adams ◽  
Surya K. Mallapragada
Keyword(s):  
Atom Transfer Radical Polymerization ◽  
Radical Polymerization ◽  
Atom Transfer ◽  
Free Block ◽  
Polymerization Method

Characterization of electrospun polylactide nanofibers modified via atom transfer radical polymerization

2020 ◽  
pp. 152808372093038 ◽  
Author(s):  
Muhammad Mushtaq ◽  
Rahim Jindani ◽  
Amjad Farooq ◽  
Xin Li ◽  
Hina Saba ◽  
...  
Keyword(s):  
Atom Transfer Radical Polymerization ◽  
Radical Polymerization ◽  
Photoelectron Spectroscopy ◽  
Polymer Chains ◽  
Surface Grafting ◽  
Atom Transfer ◽  
X Ray ◽  
Polymerization Method ◽  
Scanning Electron

Polylactic acid-based membranes received considerable attention due to its novel biocompatibility, renewability, and biodegradability. In this study, PLA electrospun nanofibrous membrane was prepared and 2-dimethylaminoethyl methacrylate (DMAEMA) was used as a monomer for surface grafting of polymer chains via the atom transfer radical polymerization method. Then the PLA nanofibers were quaternized by using bromoethane. The characterization of poly(DMAEMA) graft PLA nanofiber (poly(DMAEMA)-g-PLA) membranes was done by scanning electron microscopy, Fourier transform infrared spectroscopy, X-ray photoelectron spectroscopy, and energy dispersive X-ray spectroscopy. The results showed that the diameter of PLA nanofibers increased 15% as the concentration increased from 10% to 12% and then increased 23% as the concentration of PLA solution increased from 10% to 15%. But the regularity of average diameters is best achieved at 12% concentration.

Preparation of the AOPAN-poly(HEMA) nanofibers via the atom transfer radical polymerization method and their application for laccase immobilization

2017 ◽  
Vol 48 (1) ◽  
pp. 25-37
Author(s):  
Quan Feng ◽  
Xin Li ◽  
Dingsheng Wu ◽  
Suo Liu ◽  
Mao Ye ◽  
...  
Keyword(s):  
Atom Transfer Radical Polymerization ◽  
Radical Polymerization ◽  
Surface Grafting ◽  
Atom Transfer ◽  
The Novel ◽  
Initial Activity ◽  
Ph Change ◽  
Immobilized Laccase ◽  
Laccase Immobilization ◽  
Polymerization Method

AOPAN nanofibers were prepared by electrospinning and amidoxime modification, subsequently, HEMA was used as the monomers for surface grafting via atom transfer radical polymerization, followed by coordination with Cu(II) ions, thereafter, the nanofibers AOPAN-poly(HEMA)-Cu(II) were explored as the novel support for laccase immobilization. Scanning electron microscopy was used to visualize the morphology of the nanofibers, and Fourier transform infrared spectroscopy was used to provide information on the surface chemistry of nanofibers. At the same time, the optimization of immobilization conditions and the relative properties of the immobilized laccase were also studied in this paper. The study showed the largest amount of immobilized laccase while the reaction time of atom transfer radical polymerization was 4 h. The immobilized laccase showed a better stability resistance to temperature and pH change, and the initial activity of immobilized laccase retained (60.3 ± 3.1)%, that of the free laccase retained only (21.3 ± 2.1)% when stored at 4℃ for 24 days. Immobilized laccase maintained its initial activity after 10 repeated batches of 64.5%.

Based on atom transfer radical polymerization method preparation of fluoropolymer superhydrophobic films

2010 ◽  
Vol 518 (23) ◽  
pp. 6972-6976 ◽  
Author(s):  
Z.J. Wei ◽  
W.L. Liu ◽  
C.L. Xiao ◽  
D. Tian ◽  
Z.P. Fan ◽  
...  
Keyword(s):  
Atom Transfer Radical Polymerization ◽  
Radical Polymerization ◽  
Atom Transfer ◽  
Polymerization Method
Sign in / Sign up

Export Citation Format

Share Document