Journal
MACROMOLECULES
Volume 49, Issue 3, Pages 972-978Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acs.macromol.5b02477
Keywords
-
Categories
Funding
- AFOSR [MURI FA9550-12-1-0002]
- International Institute for Carbon Neutral Energy Research (WPI-I2CNER - World Premier International Research Center Initiative (WPI), MEXT, Japan
Ask authors/readers for more resources
We use time-domain thermoreflectance (TDTR), and the generation and detection of longitudinal and surface acoustic waves, to study the thermal conductivity, heat capacity, and elastic properties of thin films of poly(vinyl alcohol) (PVA), poly(acrylic acid) (PAA), polyacrylamide (PAM), poly(vinylpyrrolidone) (PVP), methyl cellulose (MC), poly(-styrenesulfonic acid) (PSS), poly(N-acryloylpiperidine) (PAP), poly(methyl methacrylate) (PMMA), and a polymer blend of PVA/PAA. The thermal conductivity of six water-soluble polymers in the dry state varies by a factor of from 0.21 to 0.38 W m(-1) K-1, where the largest values appear among polymers with a high concentration of hydrogen bonding (PAA, PAM, PSS). The longitudinal elastic constants range from 7.4 to 24.5 GPa and scale linearly with the shear elastic constants, suggesting a narrow distribution of Possion's ratio 0.35 < v < 0.40. The thermal conductivity increases with the average sound velocity, as expected based on the model of the minimum thermal conductivity. The thermal conductivity of polymer blends of PVA (0.31 W m(-1) K-1) and PAA (0.37 W m(-1) K-1) is in agreement with a simple rule of mixtures.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available