Induced phase separation in cellulose nanocrystal suspensions containing ionic dye species

Autor:	Derek G. Gray, David Viet, Stephanie Beck-Candanedo
Rok vydání:	2006
Předmět:	chemistry.chemical_compound Materials science Polymers and Plastics chemistry Nanocrystal Liquid crystal Ionic strength Phase (matter) Inorganic chemistry Ionic bonding Sulfuric acid Electrolyte Cellulose
Zdroj:	Cellulose. 13:629-635
ISSN:	1572-882X 0969-0239
DOI:	10.1007/s10570-006-9084-x
Popis:	Suspensions of negatively charged cellulose nanocrystal are obtained by sulfuric acid hydrolysis of cotton cellulose. Within a specific concentration range, the suspensions spontaneously phase separate to give isotropic and chiral nematic phases. Added anionic dyes of varying charge cause separation of an isotropic phase from the highly concentrated, completely anisotropic suspensions; these dyes have a much greater effect on the suspensions than the equivalent ionic strength of a simple 1:1 electrolyte (sodium chloride). Neutral, cationic and cellulose-binding anionic dyes do not cause phase separation in the anisotropic cellulose suspensions.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::7dc2c64422ac40af6e47dd23fc0b0068 https://doi.org/10.1007/s10570-006-9084-x Zobrazit plný text záznamu Full text from SpringerLink