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. 2016 Apr 23;8(4):162. doi: 10.3390/polym8040162

Figure 1.

Figure 1

SEM images of the homopolymer microgels of (a) NNPAM, (b) NIPAM and (c) NIPMAM synthesized without surfactant and the corresponding size distributions (d–f). The black lines represent a Gaussian distribution function.