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Effect of lithium salt addition on the structure and optical properties of PMMA/PVB blends
- Source :
- Polymer. 146:242-248
- Publication Year :
- 2018
- Publisher :
- Elsevier BV, 2018.
-
Abstract
- The effect of the lithium trifluoromethanesulfonate (LiCF3SO3) addition on the structure and properties for binary blends of poly(methyl methacrylate) (PMMA) and a random copolymer composed of vinyl butyral and vinyl alcohol, that is denoted as PVB in this paper, was evaluated. Although PMMA and PVB are immiscible, the LiCF3SO3 addition enhances the compatibility/miscibility by the ion-dipole interaction between lithium cation and both polymer chains. Only single peak ascribed to the glass-to-rubber transition is detected in the tensile loss modulus curve for PMMA/PVB/LiCF3SO3 (70/30/20), although there are distinct double peaks for PMMA/PVB (70/30). This result demonstrates that the salt, LiCF3SO3, acts as a compatibilizer. Furthermore, the salt addition enhances the storage modulus in the glassy region and the heat resistance due to the high-temperature-shift of glass transition temperature. The blend containing LiCF3SO3 is highly transparent and shows a significantly small value of the stress-optical coefficient in the glassy state, which are required for various optical films used for display, such as polarizer protective film.
- Subjects :
- chemistry.chemical_classification
Vinyl alcohol
Materials science
Polymers and Plastics
Organic Chemistry
02 engineering and technology
Polymer
Dynamic mechanical analysis
010402 general chemistry
021001 nanoscience & nanotechnology
01 natural sciences
Miscibility
0104 chemical sciences
chemistry.chemical_compound
chemistry
Materials Chemistry
Copolymer
Composite material
Methyl methacrylate
0210 nano-technology
Glass transition
Trifluoromethanesulfonate
Subjects
Details
- ISSN :
- 00323861
- Volume :
- 146
- Database :
- OpenAIRE
- Journal :
- Polymer
- Accession number :
- edsair.doi...........77e67721288bcc7a39956c6f959bc8be