Topic
Miscibility
About: Miscibility is a research topic. Over the lifetime, 5521 publications have been published within this topic receiving 133547 citations. The topic is also known as: miscible.
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75 citations
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01 Jan 1999
TL;DR: In this article, a simulation of spinodal decompositon in polymer mixtures interactions and phase behaviour of polyester blends is presented, along with morphology and toughening mechanisms in polymer blends by microscopial techniques.
Abstract: Compatibilization and miscibility: compatibilization of polymer blends compounding and compatibilization of high-performance polymer alloys and blends miscibility and interfacial behaviour in polymer-polymer mixtures miscibility and relaxion processes in blends thermoplastic rubbers via dynamic vulcanization thermosetting polymer blends - miscibility, crystallization, and related properties computer simulation of spinodal decompositon in polymer mixtures interactions and phase behaviour of polyester blends miscibility of nylon 66/santoprene blends. Characterization: high-performance polymer blends and alloys - structure and properties natural polymer alloys - PC/ABS systems properties of thermotropic LCP blends polymer liquid crystals in high-performance blends structure-property relationship in poly (aryl ether ketone) blends applications of x-ray photoelectron spectroscopy and secondary ion mass spectrometry in characterization of polymer blends emulsion models in polymer blend rheology. Morphology: microstructure of multiphase blends of thermoplastics study on morphology and toughening mechanisms in polymer blends by microscopial techniques deformation mechanisms in toughened PMMA impact toughening mechanisms in glassy polymers. Recent developments: new strategies for the tailoring of high-performance multiphase polymer-based materials developments in reactive blending developments in poly (vinyl chloride)/epoxidized natural rubber blends development of oil palm-based lignocellulose polymer blends.
75 citations
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TL;DR: In this article, the presence of polyvinylidene fluoride (PVDF) and atactic poly(methyl methacrylate) (at-PMMA) was confirmed, although such a kind of force was weak.
Abstract: Different results for the miscibility between poly(vinylidene fluoride) (PVDF) and atactic poly(methyl methacrylate) (at-PMMA) have been reported. In this study, the interaction between PVDF and at-PMMA was confirmed, although such a kind of force was weak. With increasing PVDF weight fraction, the blends exhibited more heterogeneous properties, and the films thus appeared more opaque. The difference spectra after subtraction of PVDF and poly(methyl methacrylate) (PMMA) showed that the interaction between the carbonyl groups of PMMA and the hydrogen atoms of PVDF increased as the stretch vibration of CO bonds band shifted to a lower frequency with higher PVDF content. From the computer analysis, the sum spectra of the blends could not be obtained by simple addition of the separate spectra of the homopolymers. The contact angle measurement demonstrated that the hydrophobicity against water increased with PVDF content and that contact angles against water were larger than 90° when the PVDF content exceeded 30%, indicating good water repellency. The contact angles against n-hexane, however, could not be measured because of the complete wetting of the film by n-hexane. © 2004 Wiley Periodicals, Inc. J Appl Polym Sci 92: 1–5, 2004
75 citations
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74 citations
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TL;DR: These methods appear to be promising to evaluate miscibility in drug-polymer systems with similar Tgs and submicron domain sizes, and are of obvious importance in the context of contributing to a mechanistic understanding of amorphous solid dispersion phase behavior.
Abstract: Miscibility is of great interest for pharmaceutical systems, in particular, for amorphous solid dispersions, as phase separation can lead to a higher tendency to crystallize, resulting in a loss in solubility, decreased dissolution rate, and compromised bioavailability. The purpose of this study was to investigate the miscibility behavior of a model poorly water-soluble drug, telaprevir (TPV), with three different polymers using atomic force microscopy-based infrared, thermal, and mechanical analysis. Standard atomic force microscopy (AFM) imaging together with nanoscale infrared spectroscopy (AFM-IR), nanoscale thermal analysis (nanoTA), and Lorentz contact resonance (LCR) measurements were used to evaluate the miscibility behavior of TPV with three polymers, hydroxypropyl methylcellulose (HPMC), HPMC acetate succinate (HPMCAS), and poly(vinylpyrrolidone-co-vinyl acetate) (PVPVA), at different drug to polymer ratios. Phase separation was observed with HPMC and PVPVA at drug loadings above 10%. For HPMCAS...
74 citations