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Cited by 194

The DOI matches its Crossref record; 6 of the 6 references it cites were found in a registry or an index.

Effect of Polylactide Stereocomplex on the Crystallization Behavior of Poly(l-lactic acid)

Rahman, Nelly, Kawai, Takahiko, Matsuba, Go, Nishida, Koji, Kanaya, Toshiji, Watanabe, Hiroshi, Okamoto, Hirotaka, Kato, Makoto, Usuki, Arimitsu, Matsuda, Masatoshi, Nakajima, Katsuhiko, Honma, Nobutaka·2009·Macromolecules

Abstract

Effects of the addition of PDLA on the crystallization behavior of PLLA was investigated by means of differential scanning calorimetry, wide-angle X-ray diffraction, melt rheology, and polarized optical microscopy. Nonisothermal and isothermal crystallization behavior of PLLA including low ( l -PDLA) and high molecular weight PDLA ( h -PDLA) were studied. PLLA/PDLA asymmetric blends form stereocomplex (SC) crystal and stay unmelted at 200 °C in the PLLA melt. Nonisothermal crystallization measurement from 200 °C showed monotonous rise in the crystallization temperature for PLLA/ h -PDLA blend, while peculiar concentration dependence was observed for PLLA/ l- PDLA blends. The acceleration effect was more pronounced in PLLA/ h -PDLA, although the crystallinity of SC was lower than PLLA/ l -PDLA blends, which implies the importance of higher order structure of SC for the crystallization of PLLA. From isothermal crystallization kinetics measurements, the acceleration effect in PLLA/ h- and l- PDLA blends was found to enhance the nucleation of crystallization but slightly interrupts the crystallization growth. The above results were reasonably explained by the model where SC crystallites are not isolated in PLLA melt but connected like a physical gel.

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Crossref · 10.1021/ma900004d

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Metadata

Authors
Rahman, N., Kawai, T., Matsuba, G., Nishida, K., Kanaya, T., Watanabe, H., Okamoto, H., Kato, M., Usuki, A., Matsuda, M., Nakajima, K., & Honma, N.
Venue
Macromolecules
Published
2009-06-09
Volume
42
Issue
13
Pages
4739-4745
ISSN
  • 0024-9297 (ISSN-L)
  • 1520-5835
OpenAlex
W2004281062
Cited by
194
References
6
FWCI
6.13
Type
journal article
Language
en
Open access
closed

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