Isotropic transition behaviour of an amphiphilic di-block copolymer under pressure

Autor:	Hirohisa Yoshida, Laure Pison, Chihiro Iwamoto, Jean-Pierre E. Grolier, Tomokazu Iyoda, Séverine A. E. Boyer
Rok vydání:	2006
Předmět:	Supercritical carbon dioxide Materials science Isotropy Analytical chemistry Calorimetry Condensed Matter Physics Supercritical fluid chemistry.chemical_compound chemistry Carbon dioxide Polymer chemistry Copolymer Physical and Theoretical Chemistry Thin film Thermal analysis
Zdroj:	Journal of Thermal Analysis and Calorimetry. 85:699-706
ISSN:	1572-8943 1388-6150
Popis:	The present work deals with the interactions between carbon dioxide, used as pressure medium, either in the gas state (GCO2) or in the supercritical state (SCCO2) and amphiphilic di-block copolymers PEOm-b-PMA(Az)n. The effect of pressure on the isotropic transition of the PEOm-b-PMA(Az)n copolymer was investigated using scanning transitiometry (ST). The experimental results were compared with those measured when using ‘relatively inert’ mercury (Hg) as pressure medium. Morphological observation of a PEOm-b-PMA(Az)n thin film submitted to SCCO2 was performed by atomic force microscopy (AFM) to investigate the nano-structure organization. These results indicate the possibility of modifying the nano-structure in a specific way depending on the CO2 physical state.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::db0640e1bfcef1dbb6421db4a1ea6daa https://doi.org/10.1007/s10973-006-7633-z Zobrazit plný text záznamu Plný text ve formátu PDF