Issue 7, 2012

Nanocellular foaming of fluorine containing block copolymers in carbon dioxide: the role of glass transition in carbon dioxide

Abstract

Carbon dioxide foaming in polymeric materials has been recognized as an environmentally friendly method to introduce microfoam consisting of cells of micrometre size (microcells). Our group has demonstrated that CO2-philic fluorinated block domains of block copolymers worked as nuclei of foams and further decreased the size of cells to around 10 nm (nanocells). In this study, we introduced nanocells to poly[(methyl methacrylate)-b-(perfluorooctylethyl methacrylate)] (PMMA–PFMA, MF) and poly[(perfluorooctylethyl methacrylate)-b-(methyl methacrylate)-b-(perfluorooctylethyl methacrylate)] (PFMA–PMMA–PFMA, FMF), and compared the resultant porosity with those of polystyrene-based fluorinated block copolymers previously studied. The temperature providing a maximum porosity for the PMMA based copolymers was lower than that for the PS based copolymers. We further measured the glass transition temperatures, Tg, of skeleton blocks, i.e. PS and PMMA, in the presence of CO2 using a quartz crystal resonator and revealed that the temperature of maximum porosity is correlated to the decreased Tg of the skeleton polymers in CO2.

Graphical abstract: Nanocellular foaming of fluorine containing block copolymers in carbon dioxide: the role of glass transition in carbon dioxide

Article information

Article type
Paper
Submitted
09 Dec 2011
Accepted
12 Dec 2011
First published
08 Feb 2012

RSC Adv., 2012,2, 2821-2827

Nanocellular foaming of fluorine containing block copolymers in carbon dioxide: the role of glass transition in carbon dioxide

C. Dutriez, K. Satoh, M. Kamigaito and H. Yokoyama, RSC Adv., 2012, 2, 2821 DOI: 10.1039/C2RA01268E

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements