Crystalline Morphology of PLLA-PDLA Copolymers Films

doi:10.19491/j.issn.1001-9278.2009.08.011

China Plastics ›› 2009, Vol. 23 ›› Issue (08): 48-52 .DOI: 10.19491/j.issn.1001-9278.2009.08.011

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Crystalline Morphology of PLLA-PDLA Copolymers Films

LI Hai-dong;LIN Yu-han;NIE Wei;JI Xiang-ling

Received:2009-04-27 Revised:1900-01-01 Online:2009-08-26 Published:2009-08-26

Abstract

Abstract: PLLA-PDLA copolymer film was obtained through spin-coating and crystallized at constant temperature. Thermal property, crystalline morphology, and crystalline structure of the film were studied uisng DSC、AFM, and XRD. At 128-153℃, an obvious crystallization peak was observed. AFM was applied to characterize the crystalline morphology of the film from different crystallization temperature, solution concentration, time, solvent, and substrate. Several rod-shaped and branching crystals with different size were observed. Especially, branching and entangled structures were observed on glass substrate, with a higher coverage density than on the silicon substrate. The XRD gave diffraction peaks at 2q values of 12.01°, 20.88°, and 24.18°.

LI Hai-dong, LIN Yu-han, NIE Wei, JI Xiang-ling. Crystalline Morphology of PLLA-PDLA Copolymers Films[J]. China Plastics, 2009, 23(08): 48-52 .

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Crystalline Morphology of PLLA-PDLA Copolymers Films

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