Shape memory effects of polyurethane block copolymers cross-linked by celite
β Scribed by Jong Shin Park; Yong-Chan Chung; Sang Do Lee; Jae Whan Cho; Byoung Chul Chun
- Publisher
- The Korean Fiber Society
- Year
- 2008
- Tongue
- English
- Weight
- 580 KB
- Volume
- 9
- Category
- Article
- ISSN
- 1229-9197
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## Abstract Synthesized shapeβmemory polyurethane (PU) block copolymers were used to prepare electrospun nonwovens via electrospinning. PU solutions were prepared with a mixed solvent of __N,N__βdimethylformamide and tetrahydrofuran. The electrospun PU nonwovens were prepared with hardβsegment conc
Segmented polyurethanes containing soft segments with lower molecular weight exhibit shape-memorizing properties. Structure and properties of shape-memorizing polyurethanes (S-PUS) were studied. S-PUS are characterized by a rather high glass transition temperature: Tg of S-PUS is usually in the rang