Table 2.

Optical and mechanical properties of PDMS with PDMS-PEG BCP additives.

(PDMS-PEG) (w/w %)	Transmittance (%) BS/AS (480 nm)	Transmittance (%) BS/AS (540 nm)	Young’s Modulus BS/20 mo (MPa)	Compressive Modulus BS/20 mo (MPa)
No PDMS-PEGa	100 ± 0.03/100 ± 0.02	100 ± 0.02/100 ± 0.03	1.3 ± 0.10	187 ± 5
No PDMS-PEG	100 ± 0.01/100 ± 0.01	100 ± 0.02/100 ± 0.02	1.2 ± 0.10/1.2 ± 0.2	217 ± 3/212 ± 5
0.125	100 ± 0.02/100 ± 0.01	100 ± 0.01/100 ± 0.01	1.3 ± 0.03/1.2 ± 0.1	218 ± 3/221 ± 3
0.25	100 ± 0.02/99 ± 0.01	100 ± 0.02/99 ± 0.02	1.4 ± 0.02/1.2 ± 0.2	203 ± 5/213 ± 7
0.5	97 ± 0.01/78 ± 0.01	98 ± 0.01/76 ± 0.01	1.3 ± 0.02/1.3 ± 0.05	201 ± 8/210 ± 3
1.0	84 ± 0.04/57 ± 0.03	87 ± 0.03/55 ± 0.04	1.2 ± 0.10/1.3 ± 0.2	219 ± 1/225 ± 3

^aYoung’s modulus and compressive modulus of PDMS with no PDMS-PEG BPC from literature⁴⁰.

BS: Before IPA Soaking, AS: After IPA Soaking, 20 mo: 20 mo storage without any IPA soak or O₂ plasma treatment. The data are shown as the mean ± SD (n = 3).