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. Author manuscript; available in PMC: 2010 Oct 1.
Published in final edited form as: Biomaterials. 2009 Jul 17;30(29):5283–5291. doi: 10.1016/j.biomaterials.2009.06.032

Figure 1.

Figure 1

Microsphere production from eight-arm PEG-vinylsulfone (PEG8-VS) reacted with eight-arm PEG-amine (PEG8-amine). The Michael-type reaction was followed by dynamic light scattering (DLS) to detect the formation of PEG oligomers/microgels during crosslinking prior to phase separation (‘pre-reaction’). At a certain mean microgel diameter, the pre-reacted solution was diluted in PBS + 0.6 M sodium sulfate and then heated above the cloud point to produce microspheres.