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23. January 2017
Abstract The main objective of the present paper has been the development and study of two new biodegradable polyurethanes, PU(dithiodiethanol-DTDI) and PU[(iPr)Man-DTDI], to be used as sustained matrix forming excipients. Furthermore, their capacity to act as excipient for colon drug delivery systems has been evaluated. Thus, SeDeM diagrams have been obtained to investigate their suitability to be processed through a direct compression process. Matrices containing 10–30% w/w of the polymers...