. Author manuscript; available in PMC: 2014 Dec 1.

Published in final edited form as: Biomaterials. 2013 Sep 23;34(38):10.1016/j.biomaterials.2013.09.015. doi: 10.1016/j.biomaterials.2013.09.015

Table 5.

Summary of nanoparticle stability against physical properties of polymers

Hydrophobic block	PS	PCL	PLA	PLGA
Noncrystallizable	+	−	+	+
T_g > T_room	+	−	+	+
\|Δδ_PEG\| >> 0	+	+	−	+
Stable particle	+	−	−	+

Biodegradable	−	− ^a	+	+
US FDA approved for parenteral administration	−	+	+	+

Biodegradable but in years