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Publisher DOI: 10.1002/mame.202200674
Title: Wet milling of alginate alco‐ and hydrogel composites : a facile top‐down approach for continuous production of aerogel microparticles
Language: English
Authors: Schröter, Baldur  
Jeansathawong, Parnpailin 
Hajnal, Anja 
Gurikov, Pavel 
Keywords: aerogel; alginate; colloid mill; microparticles; wet milling
Issue Date: 20-Jan-2023
Publisher: Wiley-VCH GmbH
Source: Macromolecular Materials and Engineering 2023 (2): 2200674 (2023)
Abstract (english): 
Moving toward high-throughput production of biopolymer aerogelmicroparticles, in this work, the wet milling process is applied to hydrogelsand alcogels. Alcogels are then converted into aerogels by well-establishedsupercritical drying. Alginate and hybrid alginate/silica gels are used as amodel system. As the Young’s moduli of hydrogels significantly change whenwater is exchanged by ethanol, it is possible to study the effect of the gelstiffness on macroscopic and microstructural properties of the resultingaerogels. Influence of process parameters (milling speed and gap size) is alsoinvestigated. Smallest particles sizes and minimal changes in microstructureare obtained for completely solvent exchanged gels. The wet milling is shownto be a versatile method to obtain aerogel particles with diameters in therange 50–300μm.
DOI: 10.15480/882.4948
ISSN: 1439-2054
Journal: Macromolecular materials and engineering 
Institute: Thermische Verfahrenstechnik V-8 
Entwicklung und Modellierung Neuartiger Nanoporöser Materialien V-EXK2 
Document Type: Article
Project: Open-Access-Publikationskosten / 2022-2024 / Technische Universität Hamburg (TUHH) 
Peer Reviewed: Yes
License: CC BY 4.0 (Attribution) CC BY 4.0 (Attribution)
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