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Table 2 Gas transport parameters for CER films under investigation

From: Nanoporous Cyanate Ester Resins: Structure-Gas Transport Property Relationships

Sample code P He (barrer) P O2 (barrer) D O2 10−8 (cm2 s−1) S O2 10−2 (cm3 STP cm−3 cmHg −1) P CO2 (barrer) D CO2 10−8, (cm2 s−1) S CO2 10−2, (cm3 STP cm−3 cmHg −1) C CO2 (cm3 STP cm−3) α He/O2 α He/CO2
CER/DBP (70/30) 4.49 0.61 4.55 0.13 3.69 1.56 2.40 5.62 7.4 1.2
CER/DMP (70/30) 3.14 0.37 2.00 0.18 1.40 0.52 2.70 6.07 8.5 2.2
CER/DMP (50/50) 4.13 0.56 4.66 0.12 2.87 1.21 2.37 5.33 7.4 1.4
CERDBP30 6.82 0.61 0.58 1.05 3.15 0.22 14.20 32.17 11.2 2.2
a-CERDBP30 7.30 0.45 0.64 0.70 1.46 0.16 9.30 20.92 16.2 5.0
a-CERDMP30 7.30 0.72 0.94 0.76 2.28 0.22 10.10 22.81 10.1 3.2
a-CERDMP50 7.00 1.08 1.10 0.98 3.13 0.26 12.10 27.22 6.5 2.2