Effects of stereocomplex nuclei or spherulites on crystalline morphology and crack behavior of poly(L -lactic acid)

Siti Nurkhamidah; Eamor M. Woo

doi:10.1002/macp.201100207

Effects of stereocomplex nuclei or spherulites on crystalline morphology and crack behavior of poly(L -lactic acid)

Siti Nurkhamidah, Eamor M. Woo^*

^*Corresponding author for this work

National Cheng Kung University

Research output: Contribution to journal › Article › peer-review

24 Citations (Scopus)

Abstract

Introduction of sc-PLA crystals as small nuclei or large sc-PLA spherulites has great influence on patterning the inter-phase boundaries and reducing the cracks in crystallized PLLA in mixtures with PDLA. Unmelted sc-PLA crystals as nuclei induce cracks in later-crystallized PLLA, whereas co-crystallization of PLLA with PDLA to develop simultaneous PLLA and sc-PLA spherulites is effective in altering the inter-phases for minimizing the cracks. PLLA co-crystallized with sc-PLA spherulites tends to be more compact than PLLA spherulites crystallizing on sc-PLA nuclei. In general, the sc-PLA spherulites suppress the occurrence of a stressed interphase in PLLA spherulites and the depth of cooling-induced cracks is also decreased.

Original language	English
Pages (from-to)	1663-1670
Number of pages	8
Journal	Macromolecular Chemistry and Physics
Volume	212
Issue number	15
DOIs	https://doi.org/10.1002/macp.201100207
Publication status	Published - 2 Aug 2011
Externally published	Yes

Keywords

PLLA
cracks
nucleation
spherulites
stereocomplexes

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10.1002/macp.201100207

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title = "Effects of stereocomplex nuclei or spherulites on crystalline morphology and crack behavior of poly(L -lactic acid)",

abstract = "Introduction of sc-PLA crystals as small nuclei or large sc-PLA spherulites has great influence on patterning the inter-phase boundaries and reducing the cracks in crystallized PLLA in mixtures with PDLA. Unmelted sc-PLA crystals as nuclei induce cracks in later-crystallized PLLA, whereas co-crystallization of PLLA with PDLA to develop simultaneous PLLA and sc-PLA spherulites is effective in altering the inter-phases for minimizing the cracks. PLLA co-crystallized with sc-PLA spherulites tends to be more compact than PLLA spherulites crystallizing on sc-PLA nuclei. In general, the sc-PLA spherulites suppress the occurrence of a stressed interphase in PLLA spherulites and the depth of cooling-induced cracks is also decreased.",

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author = "Siti Nurkhamidah and Woo, {Eamor M.}",

year = "2011",

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doi = "10.1002/macp.201100207",

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TY - JOUR

T1 - Effects of stereocomplex nuclei or spherulites on crystalline morphology and crack behavior of poly(L -lactic acid)

AU - Nurkhamidah, Siti

AU - Woo, Eamor M.

PY - 2011/8/2

Y1 - 2011/8/2

N2 - Introduction of sc-PLA crystals as small nuclei or large sc-PLA spherulites has great influence on patterning the inter-phase boundaries and reducing the cracks in crystallized PLLA in mixtures with PDLA. Unmelted sc-PLA crystals as nuclei induce cracks in later-crystallized PLLA, whereas co-crystallization of PLLA with PDLA to develop simultaneous PLLA and sc-PLA spherulites is effective in altering the inter-phases for minimizing the cracks. PLLA co-crystallized with sc-PLA spherulites tends to be more compact than PLLA spherulites crystallizing on sc-PLA nuclei. In general, the sc-PLA spherulites suppress the occurrence of a stressed interphase in PLLA spherulites and the depth of cooling-induced cracks is also decreased.

AB - Introduction of sc-PLA crystals as small nuclei or large sc-PLA spherulites has great influence on patterning the inter-phase boundaries and reducing the cracks in crystallized PLLA in mixtures with PDLA. Unmelted sc-PLA crystals as nuclei induce cracks in later-crystallized PLLA, whereas co-crystallization of PLLA with PDLA to develop simultaneous PLLA and sc-PLA spherulites is effective in altering the inter-phases for minimizing the cracks. PLLA co-crystallized with sc-PLA spherulites tends to be more compact than PLLA spherulites crystallizing on sc-PLA nuclei. In general, the sc-PLA spherulites suppress the occurrence of a stressed interphase in PLLA spherulites and the depth of cooling-induced cracks is also decreased.

KW - PLLA

KW - cracks

KW - nucleation

KW - spherulites

KW - stereocomplexes

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U2 - 10.1002/macp.201100207

DO - 10.1002/macp.201100207

M3 - Article

AN - SCOPUS:79960774024

SN - 1022-1352

VL - 212

SP - 1663

EP - 1670

JO - Macromolecular Chemistry and Physics

JF - Macromolecular Chemistry and Physics

IS - 15

ER -

Effects of stereocomplex nuclei or spherulites on crystalline morphology and crack behavior of poly(L -lactic acid)

Abstract

Keywords

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