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Cellulose Nanopaper and Nanofoam for Patient-Tailored Drug Delivery
KTH, Skolan för kemivetenskap (CHE), Fiber- och polymerteknologi. KTH, Skolan för kemivetenskap (CHE), Centra, Wallenberg Wood Science Center.
KTH, Skolan för kemivetenskap (CHE), Fiber- och polymerteknologi. KTH, Skolan för kemivetenskap (CHE), Centra, Wallenberg Wood Science Center.
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2017 (Engelska)Ingår i: Advanced Materials Interfaces, ISSN 2196-7350, Vol. 4, nr 9, artikel-id 1600655Artikel i tidskrift (Refereegranskat) Published
Abstract [en]

The development of drug delivery systems with tailored drug release can be very challenging especially in the case of problematic drugs. To address this problem, pharmaceutical scientists frequently use different formulation approaches and excipients, often involving a complex and multistep preparation. In this study, new cellulose nanofiber (CNF) based drug formulations are developed that allow controlled drug release in a facile and fast way, i.e., by simply casting drug/CNF dispersions. Altering the processing conditions and utilizing the unique inherent chemicophysical properties of cationic CNF at interfaces, it is possible to produce either drug-loaded CNF nanopapers (containing 21 or 51 wt% drug) or nanofoams (containing 21 wt% drug). The different formulations exhibit tailored release kinetics of the poorly watersoluble model drug indomethacin from immediate (nanopapers, 10-20 min) to slow release (nanofoams, approximate to 24 h). The fast release, from the nanopapers, is a result of the interplay of the molecular and supramolecular structure of indomethacin in addition to observed enhanced intrinsic dissolution of drug in the presence of CNF. The slower drug release is achieved by changing the hierarchical structure, i.e., creating a CNF based foam (porosity 99.2 wt%), and the prolonged release is mainly due to an extended drug diffusion path.

Ort, förlag, år, upplaga, sidor
Wiley-VCH Verlagsgesellschaft, 2017. Vol. 4, nr 9, artikel-id 1600655
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URN: urn:nbn:se:kth:diva-208821DOI: 10.1002/admi.201600655ISI: 000401009400008Scopus ID: 2-s2.0-85013635285OAI: oai:DiVA.org:kth-208821DiVA, id: diva2:1108794
Forskningsfinansiär
Stiftelsen för strategisk forskning (SSF)Knut och Alice Wallenbergs Stiftelse
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QC 20170613

Tillgänglig från: 2017-06-13 Skapad: 2017-06-13 Senast uppdaterad: 2017-06-13Bibliografiskt granskad

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Wohlert, JakobWågberg, Lars
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Fiber- och polymerteknologiWallenberg Wood Science Center
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