[섬유] Preparation of Polyrotaxane Fibers. Part I: Influence of Dope Solvents on the Physical Properties of Wet-spun Polyrotaxane Fibers 출판일 : 2010.06.01 저자 : Naoya Katsuyama, Koji Shimizu, Shunya Sato, Jun Kuroiwa, Akira Teramoto, Koji Abe, Jun Araki, Kohzo Ito 서지사항 : Textile Research Journal, Volume 80, Issue 9, 834페이지 등록일 : 2011.03.25 I 조회수 : 76 작성자 : admin |
The preparation of polyrotaxane fibers by wet spinning of polyrotaxane, consisting of poly
(ethylene glycol) (PEG) and α-cyclodextrins (α-CDs), was examined using three different
types of dope solvents: dimethylacetamide (DMAc) containing 8 wt% lithium chloride (LiCl),
dimethylformamide (DMF) containing 8 wt% LiCl, and dimethylsulfoxide (DMSO). In DMSO,
polyrotaxane concentrations of 20 and 30 wt% were favorable for the smooth spinning of
fibers with sufficient tenacity, while other polyrotaxane concentrations (10, 15, and 40 wt%)
were unsuitable for the wet spinning of durable fibers. All of the fibers had nearly identical
scanning electron microscopy (SEM) images and X-ray diffraction patterns. Although the
values for tenacity at break and initial modulus also were similar for all fibers, elongation at
break of fibers from DMSO was higher than the values for the other two fibers. The poorer
physical properties of the latter two fibers may be affected by the slight amount of lithium salt
remaining in the fibers.
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