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Phase segregation in individually dried particles composed of biopolymers
RISE., SP – Sveriges Tekniska Forskningsinstitut, SP Kemi Material och Ytor, Life Science. Lund University, Sweden.
GEA Process Engineering A/S, Denmark.
Lund University, Sweden.
RISE., SP – Sveriges Tekniska Forskningsinstitut, SP Kemi Material och Ytor, Life Science.ORCID-id: 0000-0001-9891-8968
2015 (engelsk)Inngår i: Langmuir, ISSN 0743-7463, E-ISSN 1520-5827, Vol. 31, nr 40, s. 10946-10954Artikkel i tidsskrift (Fagfellevurdert) Published
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Abstract [en]

Mixing of two biopolymers can results in phase separation due to their thermodynamically incompatibility under certain conditions. This phenomenon was first reported when the solution was allowed to equilibrate, but it has later been observed also as a consequence of drying. The challenges of this study were to observe phase segregation by confocal Raman microscopy and LV-SEM on dried film, individually dried particles, and spray dried particles. The influence of the solid content and the phase ratio (composition) of a HPMC/maltodextrin mixture on the localization of the ingredients in the individually dried particles was investigated. We observed that phase segregation of HPMC and maltodextrin is induced by solvent evaporation in film drying, single particle drying, as well as spray drying. The phase ratio is an important parameter that influences the localization of the HPMC-enriched phase and maltodextrin-enriched phase, i.e., to the particle surface, to the core, or in a more or less bicontinuous pattern. The drying time, affected by the solids content, was found to control the level of advancement of the phase segregation.

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American Chemical Society (ACS), 2015. Vol. 31, nr 40, s. 10946-10954
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URN: urn:nbn:se:ri:diva-152DOI: 10.1021/acs.langmuir.5b02023PubMedID: 26397315Scopus ID: 2-s2.0-84944145422OAI: oai:DiVA.org:ri-152DiVA, id: diva2:939328
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Publication no: A3579

Tilgjengelig fra: 2016-06-19 Laget: 2016-06-07 Sist oppdatert: 2023-05-09bibliografisk kontrollert

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