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• W1984804619 endingPage "4091" @default.
• W1984804619 startingPage "4084" @default.
• W1984804619 abstract "The preparation of thin composite layers has promising advantages in a variety of applications like transdermal, buccal, or sublingual patches. Within this model study the impact of the matrix material on the film forming properties of ibuprofen-matrix composite films is investigated. As matrix materials polystyrene, methyl cellulose, or hydroxyl-ethyl cellulose were used. The film properties were either varied by the preparation route, i.e., spin coating or drop casting, or via changes in the relative ratio of the ibuprofen and the matrix material. The resulting films were investigated via X-ray diffraction and atomic force microscope experiments. The results show that preferred (100) textures can be induced via spin coating with respect to the glass surface, while the drop casting results in a powder-like behavior. The morphologies of the films are strongly impacted by the ibuprofen amount rather than the preparation method. A comparison of the various matrix materials in terms of their impact on the dissolution properties show a two times faster zero order release from methyl cellulose matrix compared to a polystyrene matrix. The slowest rate was observed within the hydroxyl ethyl cellulose as the active pharmaceutical ingredients (APIs) release is limited by diffusion through a swollen matrix. The investigation reveals that the ibuprofen crystallization and film formation is only little effected by the selected matrix material than that compared to the dissolution. A similar experimental approach using other matrix materials may therefore allow to find an optimized composite layer useful for a defined application." @default.
• W1984804619 created "2016-06-24" @default.
• W1984804619 creator A5000880853 @default.
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• W1984804619 date "2014-10-13" @default.
• W1984804619 modified "2023-09-24" @default.
• W1984804619 title "Crystallographic Textures and Morphologies of Solution Cast Ibuprofen Composite Films at Solid Surfaces" @default.
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• W1984804619 doi "https://doi.org/10.1021/mp500264e" @default.
• W1984804619 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/4223873" @default.
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