ICCAS OpenIR
Crystalline morphology of poly(L-lactic acid) thin films
Li, Haidong; Nie, Wei; Deng, Chao; Chen, Xuesi; Ji, Xiangling
2009
Source PublicationEUROPEAN POLYMER JOURNAL
ISSN0014-3057
Volume45Issue:1Pages:123-130
AbstractCrystalline morphologies of spin-coated poly(L-lactic acid) (PLLA) thin films under different conditions are investigated mainly with atomic force microscopy (AFM) technique. When PLLA concentration in chloroform is varied from 0.01 to 1% gradually, disordered structure, rod-shape and larger spheres aggregates are observed in thin films subsequently. Under different annealing temperature, such as at 78, 102, 122 degrees C, respectively, we can find most rod-like crystalline aggregates. Interestingly, we observed that nucleation sites locate at the edge of the holes at the original crystalline stage. Then, these holes developed to form chrysanthemum-like and rods subsequently with annealing time meanwhile the size and the shape of crystalline aggregate are changed. In addition. effect of substrate and solvent on morphology is also discussed. On the other hand, the possible mechanism of crystalline morphology evolution is proposed. (C) 2008 Elsevier Ltd. All rights reserved.
KeywordPoly(L-lactic Acid) Thin Films Afm Crystalline Morphology
DOI10.1016/j.eurpolymj.2008.10.008
Indexed BySCI
Language英语
WOS IDWOS:000263211400014
PublisherPERGAMON-ELSEVIER SCIENCE LTD
Citation statistics
Cited Times:9[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.iccas.ac.cn/handle/121111/65980
Collection中国科学院化学研究所
Corresponding AuthorChen, Xuesi
AffiliationChinese Acad Sci, State Key Lab Polymer Phys & Chem, Changchun Inst Appl Chem, Grad Sch, Changchun 130022, Peoples R China
Recommended Citation
GB/T 7714
Li, Haidong,Nie, Wei,Deng, Chao,et al. Crystalline morphology of poly(L-lactic acid) thin films[J]. EUROPEAN POLYMER JOURNAL,2009,45(1):123-130.
APA Li, Haidong,Nie, Wei,Deng, Chao,Chen, Xuesi,&Ji, Xiangling.(2009).Crystalline morphology of poly(L-lactic acid) thin films.EUROPEAN POLYMER JOURNAL,45(1),123-130.
MLA Li, Haidong,et al."Crystalline morphology of poly(L-lactic acid) thin films".EUROPEAN POLYMER JOURNAL 45.1(2009):123-130.
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