Journal of Zhejiang University SCIENCE A
ISSN 1673-565X(Print), 1862-1775(Online), Monthly

2007   Vol. 8   No. 5   p. 830~834

Shape memory behavior of SMPU knitted fabric

LIU Yan^†, CHUNG Aggie, HU Jinlian^†‡, LV Jing

(Institute of Textile and Clothing, The Hong Polytechnic University, Hong Kong, China)
^‡ Corresponding Author
^†E-mail: tcliuyan@inet.polyu.edu.hk; tchujl@inet.polyu.edu.hk
Received Oct. 19, 2006 revision accepted Jan. 21, 2007

Abstract: A preliminary investigation of shape memory (SM) effects of SMPU (shape memory polyurethane) knitting fabric is presented in this paper. Three SMPU knitted fabrics series with different content of SMPU fibers: 100% SMPU, 50% SMPU and 50% cotton, 16% SMPU and 84% cotton are designed and manufactured in our lab. Their shape memory behaviors at different temperatures are characterized in terms of bagging. Our experimental results showed that shape memory effect can be improved with increasing content of SMPU fibers. A comparison between Lycra and SMPU knitted fabrics was also made to validate the shape memory effects of SMPU knitted fabrics.

Key words: SMPU (shape memory polyurethane) fiber, Shape memory (SM), Bagging, Recovery
doi:10.1631/jzus.2007.A0830             CLC number: TQ343.2

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