Characterisation of anisotropic poly(vinyl-alcohol) gels prepared using a two-zone controlled directional freezing process

Author

Dawson, Andrew ; Thomson, Murray ; Gouws, G. ; Ravindran, D.

Author_Institution

Callaghan Innovation, Lower Hutt, New Zealand

fYear

2013

fDate

21-25 July 2013

Firstpage

860

Lastpage

863

Abstract

PVA phantoms prepared using an improved two-zone controlled directional freezing process exhibit tailorable, repeatable, anisotropic properties representative of real tissues. The directional freeze process induces a preferred microstructural orientation with significantly increased Young´s Modulus along the direction of freezing. The uniformity of the microstructure is consistent throughout the sample as confirmed through velocity measurements.

Keywords

Young´s modulus; biological tissues; biomedical materials; freezing; phantoms; polymer gels; velocity measurement; PVA phantoms; Young´s modulus; anisotropic poly(vinyl-alcohol) gels; anisotropic properties; directional freeze process; microstructural orientation; real tissues; two-zone controlled directional freezing process; velocity measurements; Casting; Elasticity; Fingers; Microstructure; Phantoms; Temperature measurement; Young´s modulus; anisotropic; directional freezing; microstructure; phantom; tissue;

fLanguage

English

Publisher

ieee

Conference_Titel

Ultrasonics Symposium (IUS), 2013 IEEE International

Conference_Location

Prague

ISSN

1948-5719

Print_ISBN

978-1-4673-5684-8

Type

conf

DOI

10.1109/ULTSYM.2013.0221

Filename

6724808