Equilibrium structure of hydrogen-bonded polymer blends
โ Scribed by Chunlin Zhou; Erik K. Hobbie; B. J. Bauer; Charles C. Han
- Publisher
- John Wiley and Sons
- Year
- 1998
- Tongue
- English
- Weight
- 255 KB
- Volume
- 36
- Category
- Article
- ISSN
- 0887-6266
No coin nor oath required. For personal study only.
โฆ Synopsis
Deuterium-labeled polystyrene modified by random distributions of the comonomer p- (1,1,1,3,3,3-hexaflouro-2-hydroxyisopropyl)-โฃ-methyl-styrene [DPS(OH)] has been blended with poly(butyl methacrylate) (PBMA) and studied with small-angle neutron scattering (SANS). Miscibility is induced via hydrogen bonding between the DPS(OH) hydroxyl group and PBMA carbonyl groups. The data suggest that the nature of the miscible-phase structure in these blends differs from that of the usual homopolymer blends at small scattering angles, which we attribute to the short-range site specific nature of the hydrogen bond interaction.
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Successive desorption experiments of water vapor in poly(methyl methacrylate) (PMMA) were performed at temperatures from 31.0 to 45.0ยฐC. The solubility of water in PMMA was found to be independent of temperature in agreement with literature findings. But the results for diffusion showed stronger dep