열처리한 PLLA SDY 섬유의 방사광 광각 X-선 회절 분석

초록

Poly(L-lactic acid) (PLLA) filament fibers prepared by one-step melt spinning process with spin drawing were annealed at 100 oC and 120 oC and the effects of annealing on the crystal structure, crystallinity, and orientation of PLLA were studied by using synchrotron wide angle X-ray diffraction (WAXD) method. The PLLA SDY fibers of this study showed an α-form crystal structure which was not affected by the annealing. The crystallity, crystallite size of the (200) plane of α-form crystal, total orientation (Δn), and crystalline orientation (fc) increased with increasing annealing time up to 30 minutes at 100 and 120 oC.

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