期刊
INTERNATIONAL JOURNAL OF PHARMACEUTICS
卷 547, 期 1-2, 页码 169-180出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.ijpharm.2018.05.041
关键词
Ink jet printing; Orodispersible film; Sodium picosulfate; Dissolution
资金
- Austrian COMET Program of the Austrian Federal Ministry of Transport, Innovation and Technology (BMVIT)
- Austrian Federal Ministry of Economy, Family and Youth (BMWFJ)
- State of Styria (Styrian Funding Agency SFG)
In contact-less printing, such as piezo-electric drop on demand printing used in the study, the drop formation process is independent of the substrate. This means that having developed a printable formulation, printed pharmaceutical dosage forms can be obtained on any pharmaceutical grade substrate, such as polymer-based films. In this work we evaluated eight different oral films based on their suitability as printing substrates for sodium picosulfate. The different polymer films were compared regarding printed spot morphology, chemical stability and dissolution profile. The morphology of printed sodium picosulfate was investigated with scanning electron microscopy and optical coherence tomography. The spreading of the deposited drops was found to be governed by the contact angle of the ink with the substrate. The form of the sodium picosulfate drops changed on microcrystalline cellulose films at ambient conditions over 8 weeks and stayed unchanged on other tested substrates. Sodium picosulfate remained amorphous on all substrates according to small and wide angle X-ray scattering, differential scanning calorimetry and polarized light microscopy measurements. The absence of chemical interactions between the drug and substrates, as indicated by infrared spectroscopy, makes all tested substrates suitable for printing sodium picosulfate onto them.
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