{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,3,14]],"date-time":"2026-03-14T05:01:24Z","timestamp":1773464484088,"version":"3.50.1"},"reference-count":61,"publisher":"MDPI AG","issue":"7","license":[{"start":{"date-parts":[[2020,4,7]],"date-time":"2020-04-07T00:00:00Z","timestamp":1586217600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100006380","name":"Universit\u00e4t f\u00fcr Bodenkultur Wien","doi-asserted-by":"publisher","award":["10.13039\/501100006380"],"award-info":[{"award-number":["10.13039\/501100006380"]}],"id":[{"id":"10.13039\/501100006380","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100000921","name":"European Cooperation in Science and Technology","doi-asserted-by":"publisher","award":["18125"],"award-info":[{"award-number":["18125"]}],"id":[{"id":"10.13039\/501100000921","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Molecules"],"abstract":"<jats:p>Biopolymer aerogels of appropriate open-porous morphology, nanotopology, surface chemistry, and mechanical properties can be promising cell scaffolding materials. Here, we report a facile approach towards the preparation of cellulose phosphate aerogels from two types of cellulosic source materials. Since high degrees of phosphorylation would afford water-soluble products inappropriate for cell scaffolding, products of low DSP (ca. 0.2) were prepared by a heterogeneous approach. Aiming at both i) full preservation of chemical integrity of cellulose during dissolution and ii) utilization of specific phase separation mechanisms upon coagulation of cellulose, TBAF\u00b7H2O\/DMSO was employed as a non-derivatizing solvent. Sequential dissolution of cellulose phosphates, casting, coagulation, solvent exchange, and scCO2 drying afforded lightweight, nano-porous aerogels. Compared to their non-derivatized counterparts, cellulose phosphate aerogels are less sensitive towards shrinking during solvent exchange. This is presumably due to electrostatic repulsion and translates into faster scCO2 drying. The low DSP values have no negative impact on pore size distribution, specific surface (SBET \u2264 310 m2 g\u22121), porosity (\u03a0 95.5\u201397 vol.%), or stiffness (E\u03c1 \u2264 211 MPa cm3 g\u22121). Considering the sterilization capabilities of scCO2, existing templating opportunities to afford dual-porous scaffolds and the good hemocompatibility of phosphorylated cellulose, TBAF\u00b7H2O\/DMSO can be regarded a promising solvent system for the manufacture of cell scaffolding materials.<\/jats:p>","DOI":"10.3390\/molecules25071695","type":"journal-article","created":{"date-parts":[[2020,4,10]],"date-time":"2020-04-10T05:31:16Z","timestamp":1586496676000},"page":"1695","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":9,"title":["Aerogels from Cellulose Phosphates of Low Degree of Substitution: A TBAF\u00b7H2O\/DMSO Based Approach"],"prefix":"10.3390","volume":"25","author":[{"given":"Christian B.","family":"Schimper","sequence":"first","affiliation":[{"name":"University of Natural Resources and Life Sciences, Vienna (BOKU), Institute for Chemistry of Renewable Resources, Konrad-Lorenz-Stra\u00dfe 24, A-3430 Tulln, Austria"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Paul S.","family":"Pachschwoell","sequence":"additional","affiliation":[{"name":"University of Natural Resources and Life Sciences, Vienna (BOKU), Institute for Chemistry of Renewable Resources, Konrad-Lorenz-Stra\u00dfe 24, A-3430 Tulln, Austria"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-9343-5673","authenticated-orcid":false,"given":"Hubert","family":"Hettegger","sequence":"additional","affiliation":[{"name":"University of Natural Resources and Life Sciences, Vienna (BOKU), Institute for Chemistry of Renewable Resources, Konrad-Lorenz-Stra\u00dfe 24, A-3430 Tulln, Austria"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Marie-Alexandra","family":"Neouze","sequence":"additional","affiliation":[{"name":"Vienna University of Technology, Institute of Materials Chemistry, Getreidemarkt 9\/165, A-1060 Vienna, Austria"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-8243-6849","authenticated-orcid":false,"given":"Jean-Marie","family":"Nedelec","sequence":"additional","affiliation":[{"name":"Universit\u00e9 Clermont Auvergne, CNRS, SIGMA Clermont, ICCF, F-63000 Clermont-Ferrand, France"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Martin","family":"Wendland","sequence":"additional","affiliation":[{"name":"University of Natural Resources and Life Sciences, Vienna (BOKU), Institute for Chemical and Energy Engineering, Muthgasse 107, A-1190 Vienna, Austria"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-6636-9260","authenticated-orcid":false,"given":"Thomas","family":"Rosenau","sequence":"additional","affiliation":[{"name":"University of Natural Resources and Life Sciences, Vienna (BOKU), Institute for Chemistry of Renewable Resources, Konrad-Lorenz-Stra\u00dfe 24, A-3430 Tulln, Austria"},{"name":"Johan Gadolin Process Chemistry Centre, \u00c5bo Akademi University, Porthansgatan 3, FI-20500 \u00c5bo\/Turku, Finland"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-8244-8153","authenticated-orcid":false,"given":"Falk","family":"Liebner","sequence":"additional","affiliation":[{"name":"University of Natural Resources and Life Sciences, Vienna (BOKU), Institute for Chemistry of Renewable Resources, Konrad-Lorenz-Stra\u00dfe 24, A-3430 Tulln, Austria"},{"name":"University Aveiro, Department of Chemistry and CICECO Aveiro Institute of Materials, Campus Universit\u00e1rio de Santiago, 3810-193 Aveiro, Portugal"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2020,4,7]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"127","DOI":"10.1016\/j.carbpol.2019.01.061","article-title":"Production of high-purity cellulose, cellulose acetate and cellulose-silica composite from babassu coconut shells","volume":"210","author":"Amaral","year":"2019","journal-title":"Carbohydr. 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