Effect of Mixing Technology on Homogeneity and Quality of Sodium Naproxen Tablets: Technological and Analytical Evaluation Using HPLC Method

The uniform distribution of APIs is essential in tablet formulations, particularly in direct compression, where powder blending is the only means of ensuring dose homogeneity. This study evaluated the influence of three mixing techniques—V-type mixer, planetary ball mill, and vibratory ball mill—on...

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Main Authors: Mateusz Przywara, Regina Lech-Przywara, Patrycja Rupar, Wojciech Zapała
Format: Article
Language:English
Published: MDPI AG 2025-07-01
Series:Molecules
Subjects:
Online Access:https://www.mdpi.com/1420-3049/30/15/3119
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author Mateusz Przywara
Regina Lech-Przywara
Patrycja Rupar
Wojciech Zapała
author_facet Mateusz Przywara
Regina Lech-Przywara
Patrycja Rupar
Wojciech Zapała
author_sort Mateusz Przywara
collection DOAJ
description The uniform distribution of APIs is essential in tablet formulations, particularly in direct compression, where powder blending is the only means of ensuring dose homogeneity. This study evaluated the influence of three mixing techniques—V-type mixer, planetary ball mill, and vibratory ball mill—on the physical properties and content uniformity of naproxen sodium tablets. Blends consisting of naproxen sodium, cellulose, PVP, calcium carbonate, and magnesium stearate were prepared under varied mixing intensities and characterized in terms of flowability, compressibility, and particle size distribution. The resulting tablets were analyzed for weight, thickness, hardness, friability, and API content using a simplified bypass HPLC method. The V-type mixer yielded tablets with the most consistent weight and thickness, despite the poorest blend flow properties. Vibratory milling produced the hardest tablets and best API content uniformity, although high-energy processing introduced variability at longer mixing times. The analytical method proved fast and robust, allowing for reliable API quantification without full chromatographic separation. These findings underscore the need to balance mechanical blending energy with formulation properties and support the use of streamlined analytical strategies in pharmaceutical development.
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spelling doaj-art-2b3f96d03a6c4eb6a9ddde44835d93b82025-08-20T03:02:55ZengMDPI AGMolecules1420-30492025-07-013015311910.3390/molecules30153119Effect of Mixing Technology on Homogeneity and Quality of Sodium Naproxen Tablets: Technological and Analytical Evaluation Using HPLC MethodMateusz Przywara0Regina Lech-Przywara1Patrycja Rupar2Wojciech Zapała3Department of Chemical and Process Engineering, Rzeszow University of Technology, al. Powstańców Warszawy 6, 35-959 Rzeszów, PolandDoctoral School of the Rzeszow University of Technology, al. Powstańców Warszawy 12, 35-959 Rzeszów, PolandDepartment of Chemical and Process Engineering, Rzeszow University of Technology, al. Powstańców Warszawy 6, 35-959 Rzeszów, PolandDepartment of Chemical and Process Engineering, Rzeszow University of Technology, al. Powstańców Warszawy 6, 35-959 Rzeszów, PolandThe uniform distribution of APIs is essential in tablet formulations, particularly in direct compression, where powder blending is the only means of ensuring dose homogeneity. This study evaluated the influence of three mixing techniques—V-type mixer, planetary ball mill, and vibratory ball mill—on the physical properties and content uniformity of naproxen sodium tablets. Blends consisting of naproxen sodium, cellulose, PVP, calcium carbonate, and magnesium stearate were prepared under varied mixing intensities and characterized in terms of flowability, compressibility, and particle size distribution. The resulting tablets were analyzed for weight, thickness, hardness, friability, and API content using a simplified bypass HPLC method. The V-type mixer yielded tablets with the most consistent weight and thickness, despite the poorest blend flow properties. Vibratory milling produced the hardest tablets and best API content uniformity, although high-energy processing introduced variability at longer mixing times. The analytical method proved fast and robust, allowing for reliable API quantification without full chromatographic separation. These findings underscore the need to balance mechanical blending energy with formulation properties and support the use of streamlined analytical strategies in pharmaceutical development.https://www.mdpi.com/1420-3049/30/15/3119naproxen sodiumcontent uniformitypowder mixingdirect compressionV-type mixerball mill
spellingShingle Mateusz Przywara
Regina Lech-Przywara
Patrycja Rupar
Wojciech Zapała
Effect of Mixing Technology on Homogeneity and Quality of Sodium Naproxen Tablets: Technological and Analytical Evaluation Using HPLC Method
Molecules
naproxen sodium
content uniformity
powder mixing
direct compression
V-type mixer
ball mill
title Effect of Mixing Technology on Homogeneity and Quality of Sodium Naproxen Tablets: Technological and Analytical Evaluation Using HPLC Method
title_full Effect of Mixing Technology on Homogeneity and Quality of Sodium Naproxen Tablets: Technological and Analytical Evaluation Using HPLC Method
title_fullStr Effect of Mixing Technology on Homogeneity and Quality of Sodium Naproxen Tablets: Technological and Analytical Evaluation Using HPLC Method
title_full_unstemmed Effect of Mixing Technology on Homogeneity and Quality of Sodium Naproxen Tablets: Technological and Analytical Evaluation Using HPLC Method
title_short Effect of Mixing Technology on Homogeneity and Quality of Sodium Naproxen Tablets: Technological and Analytical Evaluation Using HPLC Method
title_sort effect of mixing technology on homogeneity and quality of sodium naproxen tablets technological and analytical evaluation using hplc method
topic naproxen sodium
content uniformity
powder mixing
direct compression
V-type mixer
ball mill
url https://www.mdpi.com/1420-3049/30/15/3119
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