A Quantitative Disintegration Method for Polymeric Films
Current in vitro disintegration methods for polymeric
films are qualitative and introduce significant user bias. The goal of these studies is to develop a novel, quantitative disintegration technique which can be used to characterize polymeric
films in vitro.
A method was developed using a Texture Analyzer instrument to evaluate film disintegration. Solvent-casted, clinically advanced, anti-HIV, vaginal films as well as marketed vaginal films were
used throughout these studies. Method development followed a quality by design (QbD) process and was used to evaluate film products.
The current method developed provided reproducible,
quantitative disintegration times for the commercially available vaginal contraceptive film (57.88 ± 5.98 s). It distinguished between two clinically advanced antiretroviral containing
films based on disintegration time (p value < 0.001): the tenofovir film
(41.28 ± 3.35 s) and the dapivirine film (88.36 ± 10.61 s). This method could also distinguish between tenofovir and dapivirine films which had been altered in terms of volume
(p < 0.0001) and formulation (p < 0.0001) based on disintegration time.
This method can be applied for pharmaceutical films for
ranging indications as part of vigorous in vitro characterization. Parameters of the test can be altered based on site of application or indication.