Biodegradable Polymers for Microencapsulation Systems

Figure 56

SEM morphologies of [BMIm]PF6@PU microcapsules prepared with increasing emulsification rate (sample 1–4). (a) 500 rpm. (b) 2000 rpm. (c) 5000 rpm, (d) 8000 rpm [150].

(a)

(b)

(c)

(d)