WFRF:(Mosén Kristina)
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- Mosén, KristinaLund University,Lunds universitet,Avdelningen för kemiteknik,Institutionen för processteknik och tillämpad biovetenskap,Institutioner vid LTH,Lunds Tekniska Högskola,Division of Chemical Engineering,Department of Process and Life Science Engineering,Departments at LTH,Faculty of Engineering, LTH (author)
The apparent plasticizing effect of polyethylene glycol (PEG) on the crystallinity of spray dried lactose/PEG composites
- Article/chapterEnglish2006
Publisher, publication year, extent ...
- Elsevier BV,2006
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- LIBRIS-ID:oai:lup.lub.lu.se:a6baf963-9b1a-43da-b303-82a101abc052
- https://lup.lub.lu.se/record/392752URI
- https://doi.org/10.1016/j.ejpb.2006.05.015DOI
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- Language:English
- Summary in:English
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- Aqueous solutions of lactose and polyethylene glycol (PEG) were spray dried in a Buchi Model 191 spray dryer with the aim to investigate the effect of PEG on the crystallinity of the composite. A PEG concentration of 10.7% by weight of solids was studied for PEG 200, 600, 1500, 4000 and 8000. For PEG 200 and 4000 additional concentrations from 1.5-19.3% to 1.5-32.4%, respectively, were investigated. The spray dried composites were analysed with X-ray powder diffraction and modulating differential scanning calorimetry. The crystallinity of lactose in the composites varied from 0% to 60%, dependent on the molecular weight and concentration of PEG. Apparently, lactose crystallinity is promoted by low molecular weight and high concentration of the PEG. PEG did not affect the lactose glass transition temperature. It is suggested that lactose and PEG are solidified separately during spray drying and that partial crystallization of lactose is associated with effects of PEG on the rate of drying.
Subject headings and genre
- TEKNIK OCH TEKNOLOGIER Kemiteknik hsv//swe
- ENGINEERING AND TECHNOLOGY Chemical Engineering hsv//eng
- temperature
- glass transition
- lactose
- spray drying
- polyethylene glycol
- crystallinity
Added entries (persons, corporate bodies, meetings, titles ...)
- Backstrom, Kjell (author)
- Thalberg, Kyrre (author)
- Schaefer, Torben (author)
- Axelsson, AndersLund University,Lunds universitet,Avdelningen för kemiteknik,Institutionen för processteknik och tillämpad biovetenskap,Institutioner vid LTH,Lunds Tekniska Högskola,Division of Chemical Engineering,Department of Process and Life Science Engineering,Departments at LTH,Faculty of Engineering, LTH(Swepub:lu)kat-aax (author)
- Kristensen, Hennina G. (author)
- Avdelningen för kemiteknikInstitutionen för processteknik och tillämpad biovetenskap (creator_code:org_t)
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- In:European Journal of Pharmaceutics and Biopharmaceutics: Elsevier BV64:2, s. 206-2110939-6411
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