PEG-diacrylate

In their further studies on chitosan for biomedical applications, Lee et al. [133] reported a procedure for preparing semi-IPN polymer network hydrogels composed of (3-chitosan and PEG diacrylate macromer, by following a similar procedure to that discussed above. The crystallinity as well as thermal and mechanical properties of gels were reported [133]. Reports on the drug release behavior of the gels are not available. 

Pelton and coworkers showed that the size of PNIPAAm microgels decreases by a factor of 10 if sodium dodecyl sulfate (SDS) is used in the polymerization procedure [61]. Lyon s group used SDS for stabilization of PNIPAAm microgels prepared with PEG diacrylates of different PEG chain length [62], To investigate the influence of polymerization conditions on internal structure of PNIPAAm microgels, SDS was used in batch and semibatch polymerization processes [63],... 

For example, peptides containing the adhesive Arg-Gly-Asp (RGD) sequence can be readily incorporated into PEG hydrogels via photopolymerization. " " The peptide is reaaed with the suc-cinimidyl ester of acrylic add in dimethylformamide to functionalize the N-terminal amine of the peptide with an acrylate moiety, thereby enabling the peptide to copolymerize rapidly with the PEG diacrylate upon photoinitiation. Using this system. 

Fairbanks BD, Schwartz MP, Bowman CN, Anseth KS. Photoinitiated polymerization of PEG-diacrylate with hthium phenyl-2,4,6-trimethylbenzoylphosphinate polymerization rate and c)4ocompatibihty. Biomaterials 2009 30 6702-7. 

Biodegradable chitosan hydrogel using N-acryloylglycine and IPN chitosan hydrogel using PEG diacrylate Both of them showed potential utility for controUed-relecise applications. [41]... 

Turturro, M., Christenson, M., Larson, , and Papavasihou, G. (2012). Matrix metalloproteinase (MMP) sensitive PEG diacrylate (PEGDA) hydrogels with spatial variations in matrix properties direct vascular cell invasion. Journal of Tissue Engineering and Regenerative Medicine, 6,302. 

Cryogelation is another method used to synthesize hydrophilic macroporous materials with interconnected pores, with potential bioappUcability. In this context, NMR seems to be an ideal technique to study the behavior of water and the solutes in the nonlirozen water phase. Thus, the cross-linking polymerization of dimethylacrylamide (DMAAm) with PEG diacrylate as the cross-Unker in a semi-frozen aqueous solution was studied by Kirsebom et al. [170] with the use of H NMR to monitor the amount of nonfrozen phase and the progress of the polymerization reaction in situ in samples frozen at -12 °C directly in the spectrometer. 

When an ionic liquid such as a mixture of l-ethyl-3-methylimidazolium tetrafluoroborate and LiBp4 is added to a polymer such as PEG diacrylate, the ionic conductivity of the obtained gel electrolyte is lower than that of the... 

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