. Author manuscript; available in PMC: 2020 May 14.

Published in final edited form as: SLAS Technol. 2017 Aug 21;22(6):646–661. doi: 10.1177/2472630317726050

Table 2:

Measured water contact angles and droplet heights on the various PS substrates as a function of UV exposure duration. For each substrate type, groups not connected by the same letter (a, b, or c) are significantly different (p<0.05). For each UV exposure duration, * indicates a significant difference between the types of PS substrate.

Substrate (n=4)	UV Treatment	Contact Angle (^o)	Droplet Height (mm)

bgPS	0h	80.84±2.02^a,*	1.83±0.05^a*
bgPS	2h	77.65±2.45^a,b,*	1.74±0.04^a,b*
bgPS	4h	73.23±1.14^b*	1.68±0.01^b*
bgPS	16h	57.28±2.88^c*	1.41±0.06^c*

tctPS	0h	58.50±2.12^a	1.42±0.06^a
tctPS	2h	48.38±1.23^b	1.25±0.02^b
tctPS	4h	50.03±2.27^b	1.24±0.05^b
tctPS	16h	48.80±2.13^b	1.23±0.03^b