Abstract
The production of porous materials based on starch has been explored with supercritical drying-yielding aerogel-and freeze-drying. The two drying procedures were applied on the same gelling solution of amylomaize starch pasted at 140 °C and for two concentrations (5 and 10 wt.%). After gelation and retrogradation, water from the samples to be supercritically dried was exchanged to ethanol. The resulting starch aerogel presented high specific surface area (197 m²/g). Freeze-drying was assessed by investigating the effect of the gelation, retrogradation, freezing temperature, and sublimation pressure. The resulting starch materials were macroporous, with limited specific surface area and limited mechanical integrity. Cohesive open cell foam with pore size of ~20 µm was produced by quenching the hot starch melt in liquid nitrogen. The highest specific surface area obtained with freeze-drying was 7.7 m²/g for the hot starch melt frozen at -20 °C.
References
Oct 11, 2008·Langmuir : the ACS Journal of Surfaces and Colloids·Mike RobitzerFrançoise Quignard
Sep 29, 2009·Biomaterials·Maria B DainiakIgor Yu Galaev
Feb 15, 2013·ACS Applied Materials & Interfaces·Hong-Bing ChenDavid A Schiraldi
Jun 12, 2014·Journal of Chromatography. a·Gizem Ertürk, Bo Mattiasson
May 15, 2016·Carbohydrate Polymers·Ali Ubeyitogullari, Ozan N Ciftci
Jun 21, 2016·Advances in Colloid and Interface Science·Hajar MalekiMorteza Mahmoudi
Jul 10, 2016·European Journal of Pharmaceutics and Biopharmaceutics : Official Journal of Arbeitsgemeinschaft Für Pharmazeutische Verfahrenstechnik E.V·V S S GonçalvesI Smirnova
Dec 17, 2016·Food Chemistry·Negar AbhariAli Dini
Dec 19, 2016·Carbohydrate Polymers·Clara Jiménez-SaelicesYves Grohens
Apr 5, 2017·Annual Review of Chemical and Biomolecular Engineering·Irina Smirnova, Pavel Gurikov
Jun 29, 2017·Scientific Reports·Runan GaoJian Li
Oct 27, 2017·Biomacromolecules·Lucile DruelTatiana Budtova
Dec 25, 2017·Journal of Hazardous Materials·Jian HeRui Liu
Jan 10, 2018·Angewandte Chemie·Shanyu ZhaoGustav Nyström
Jun 13, 2018·Carbohydrate Polymers·Sophie Groult, Tatiana Budtova
Dec 21, 2015·Gels·Raman SubrahmanyamIrina Smirnova
Citations
Dec 11, 2019·Gels·Zachary J Rogers, Sidi A Bencherif
Feb 23, 2020·Polymers·Antonio J CapezzaRichard T Olsson
Sep 24, 2020·Gels·Mirelle DogenskiSandra R S Ferreira
Nov 22, 2020·Polymers·Claudia KeilHajo Haase
Nov 19, 2020·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Fernando Alvarado-HidalgoRicardo Starbird-Perez
Jun 14, 2021·Carbohydrate Polymers·Thierry HelleboisChristos Soukoulis