Synthesis of Biodegradable Hydroxy-Functionalized Poly(oligo(ethylene Oxide) Monomethyl Ether Methacrylate) (HO-POEOMA) Polymer by Inverse Miniemulsion ATRP

2013 ◽  
Vol 726-731 ◽  
pp. 716-719
Author(s):  
Lin Ping Zheng ◽  
Qian Qian You ◽  
Pu Yu Zhang

The biodegradable hydroxy-functionalized poly(oligo(ethylene oxide) monomethyl ether methacrylate) (HO-POEOMA) polymer is synthesized by inverse miniemulsion atom transfer radical polymerization (ATRP). The chain structure and component of such polymer is characterized by spectroscopic studies (1HNMR, IR and GPC).

e-Polymers ◽  
2007 ◽  
Vol 7 (1) ◽  
Author(s):  
Yang Runmiao ◽  
Shi Ronghua ◽  
Zhou Dan ◽  
Wang Yanmei ◽  
Han Yanchun

AbstractPoly(ethylene oxide)-b-poly(N, N-dimethylacrylamide) (PEO-b-PDMA) was synthesized by successive atom transfer radical polymerization (ATRP) of N,N-dimethylacrylamide (DMA) monomer using PEO-Br macro initiators as initiator, CuBr and 5,5,7,12,12,14-hexamethyl-1,4,8,11-tetraazamacrocyclotetra decane (Me6[14]aneN4) as catalyst and ligand.PEO-Br macroinitiator was synthesized by esterification of PEO with 2-bromoisobutyryl bromide. GPC and 1H NMR studies show that the plot of ln([DMA]0/[DMA]) against the reaction time is linear, and the molecular weight of the resulting PDMA increased linearly with the conversion. Within 3 h, the polymerization can reach almost 60% of conversion. PEO-b-PDMA copolymer with low polydispersity index (Mw/Mn≈1.1) is obtained. Self-assembly of PEO-b-PDMA in selective solvents is also studied. It could self-assemble into micelles in methanol/acetone (1/10, v/v) solution. TEM analyses of the PEO-b- PDMA micelles with narrow size distribution revealed that their size and shape depend much on the copolymer composition.


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