Miscibility of Ternary Amorphous Nylon/Poly(methyl methacrylate)/Poly(4-vinylphenol) Blends
| Autor: | Saburo Akiyama, Masaru Hosokawa |
|---|---|
| Rok vydání: | 1999 |
| Předmět: |
chemistry.chemical_classification
Materials science Polymers and Plastics Polymer Methacrylate Poly(methyl methacrylate) Miscibility Differential scanning calorimetry chemistry Chemical engineering visual_art Polymer chemistry Materials Chemistry visual_art.visual_art_medium Polymer blend Fourier transform infrared spectroscopy Ternary operation |
| Zdroj: | Polymer Journal. 31:13-20 |
| ISSN: | 1349-0540 0032-3896 |
| DOI: | 10.1295/polymj.31.13 |
| Popis: | The misciblity of ternary blends consisting of amorphous nylon (Am-Nylon)/poly(methy methacrylate) (PM MA )/poly(4-vinylphenol) (PVPh) at 190°C was investigated by differential scanning calorimetry (DSC)),thermo-photometry, Fourier transform infrared spectroscopy (FT-IR), and scanning electron microscopy (SEM). In the ternary blends, more than 70-90 wt% PVPh was required to cause miscibility between Am-Nylon and PMMA, and the experimental ternary diagram indicating symmetrically miscible regions was obtained. FT-IR results showed this miscibility was attributed to intermolecular hydrogen bonding interactions. Using stoichiometric equations, the equilibnum constant (K c = 3.2) describing hydrogen bonding between the OH group of PVPh and amide group of Am-Nylon was determined from quantitative FT-IR analysis. The miscible region was affected by individual equilibrium constants (K i ), since individual binary interaction parameters (X ij ) were significantly larger than the critical value of X ij . The miscibility of Am-Nylon PMMA blends was enhanced by adding 20 wt% PVPh to binary immiscible polymer. The size of the dispersed PMMA phase was thus smaller than in the absence of PVPh. This suggests that PVPh acts as a compatibilizer for immiscihle Am-Nylon. PMMA blends. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|