Synthesis of P(NIPAM-co-Am)/Mesoporous Silica Composites and Their Temperature- Responsive Anion Exchange

Autor:	Yukihiko Inoue, Yasuto Sato, Kenji Murakami
Rok vydání:	2015
Předmět:	chemistry.chemical_classification chemistry.chemical_compound Adsorption Materials science chemistry Ion exchange Transition temperature Acrylamide Copolymer Methyl orange Polymer Composite material Mesoporous silica
Zdroj:	Journal of Materials Science and Chemical Engineering. :7-15
ISSN:	2327-6053 2327-6045
DOI:	10.4236/msce.2015.37002
Popis:	The purpose of this study is to examine the structure and the temperature-responsive anion exchange property of amino-functionalized mesoporous silica coated with temperature-responsive copolymer, poly(N-isopropylacrylamide-co-acrylamide) (P(NIPAM-co-Am)). For this purpose, the composites which contained 0, 10, or 20 wt% of Am were synthesized. From the TG results, it was found that the amounts of copolymer immobilized on the mesoporous silica were 1.6 - 2.6 wt%. XRD patterns revealed that the structures of composites were hexagonal and almost the same as that of original mesoporous silica without polymer. At low temperature the methyl orange (MO) anions adsorbed and desorbed reversibly with changing pH of the solution, while at high temperature the MO anions did not. This temperature, at which the amount of adsorbed MO anions changed considerably, shifted to the higher temperature side with increasing the amount of added Am.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::edfe39238f79941bb26540cc8b6f9425 https://doi.org/10.4236/msce.2015.37002 Zobrazit plný text záznamu