TY - JOUR
T1 - Measurement of water vapor diffusion in nanoscale polymer films by frequency-domain probe beam deflection
AU - Xie, Xu
AU - Dennison, Jordan M.
AU - Shin, Jungwoo
AU - Diao, Zhu
AU - Cahill, David G.
N1 - Funding Information:
This work is supported by BP 75195/ICAM25. The sample preparation and measurement were carried out in part in the Frederick Seitz Materials Research Laboratory Central Research Facilities, University of Illinois.
Publisher Copyright:
© 2018 Author(s).
PY - 2018/10/1
Y1 - 2018/10/1
N2 - We developed an optical pump-probe technique, frequency-domain probe beam deflection (FD-PBD) to measure the diffusion of water vapor in nanoscale polymer films with microsecond temporal resolution and micrometer spatial resolution. We describe the quantitative model of beam deflection for multilayer structures, the experimental approach, and the application of FD-PBD to measure the diffusivity (Dm) of saturated water vapor in various glassy polymer films including polyimide (PI, Dm = 7.0 × 10-13 m2 s-1), poly(methyl methacrylate) (PMMA, Dm = 1.2 × 10-12 m2 s-1), poly-(vinylpyrrolidone) (PVP, Dm = 1.7 × 10-12 m2 s-1), and cellulose acetate (CA, Dm = 2.6 × 10-11 m2 s-1), and the piperazine/trimesoyl chloride (PIP/TMC, Dm = 9 × 10-11 m2 s-1) nanofiltration membrane synthesized by interfacial polymerization. The uncertainty of the measurements is typically ≈8%.
AB - We developed an optical pump-probe technique, frequency-domain probe beam deflection (FD-PBD) to measure the diffusion of water vapor in nanoscale polymer films with microsecond temporal resolution and micrometer spatial resolution. We describe the quantitative model of beam deflection for multilayer structures, the experimental approach, and the application of FD-PBD to measure the diffusivity (Dm) of saturated water vapor in various glassy polymer films including polyimide (PI, Dm = 7.0 × 10-13 m2 s-1), poly(methyl methacrylate) (PMMA, Dm = 1.2 × 10-12 m2 s-1), poly-(vinylpyrrolidone) (PVP, Dm = 1.7 × 10-12 m2 s-1), and cellulose acetate (CA, Dm = 2.6 × 10-11 m2 s-1), and the piperazine/trimesoyl chloride (PIP/TMC, Dm = 9 × 10-11 m2 s-1) nanofiltration membrane synthesized by interfacial polymerization. The uncertainty of the measurements is typically ≈8%.
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U2 - 10.1063/1.5039731
DO - 10.1063/1.5039731
M3 - Article
C2 - 30399957
AN - SCOPUS:85055050170
SN - 0034-6748
VL - 89
JO - Review of Scientific Instruments
JF - Review of Scientific Instruments
IS - 10
M1 - 104904
ER -