Microstructure of semicrystalline poly(L-lactide)/poly(4-vinylphenol) blends evaluated from SAXS absolute intensity measurement

Hsin Lung Chen; Hsing Huang Liu; J. S. Lin

doi:10.1021/ma991504o

Microstructure of semicrystalline poly(L-lactide)/poly(4-vinylphenol) blends evaluated from SAXS absolute intensity measurement

Hsin Lung Chen
, Hsing Huang Liu
, J. S. Lin

National Tsing Hua University
Oak Ridge National Laboratory

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

41 Scopus citations

Abstract

The semicrystalline morphology of melt-miscible poly(L-lactide) (PLLA)/poly(4-vinylphenol) (PVPh) blends was probed by small-angle X-ray scattering (SAXS) with the measurement of absolute intensity. Blending with PVPh enhanced the SAXS intensity associated with the lamellar stacks. This was attributed to the presence of PVPh in the interlamellar regions that enhanced the electron density contrast (Δ_η) between the crystalline and amorphous layers. The interlamellar morphology was quantitatively characterized by the magnitude of Δ_η deduced from Strobl-Schneider's one-dimensional correlation function assuming the corresponding two-phase model. Good agreement between the measured Δ_η and the values calculated by assuming a complete interlamellar incorporation indicated that nearly all PVPh was expelled into the interlamellar regions upon the crystallization of PLLA.

Original language	English
Pages (from-to)	4856-4860
Number of pages	5
Journal	Macromolecules
Volume	33
Issue number	13
DOIs	https://doi.org/10.1021/ma991504o
State	Published - 27 06 2000
Externally published	Yes

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title = "Microstructure of semicrystalline poly(L-lactide)/poly(4-vinylphenol) blends evaluated from SAXS absolute intensity measurement",

abstract = "The semicrystalline morphology of melt-miscible poly(L-lactide) (PLLA)/poly(4-vinylphenol) (PVPh) blends was probed by small-angle X-ray scattering (SAXS) with the measurement of absolute intensity. Blending with PVPh enhanced the SAXS intensity associated with the lamellar stacks. This was attributed to the presence of PVPh in the interlamellar regions that enhanced the electron density contrast (Δη) between the crystalline and amorphous layers. The interlamellar morphology was quantitatively characterized by the magnitude of Δη deduced from Strobl-Schneider's one-dimensional correlation function assuming the corresponding two-phase model. Good agreement between the measured Δη and the values calculated by assuming a complete interlamellar incorporation indicated that nearly all PVPh was expelled into the interlamellar regions upon the crystallization of PLLA.",

author = "Chen, \{Hsin Lung\} and Liu, \{Hsing Huang\} and Lin, \{J. S.\}",

year = "2000",

month = jun,

day = "27",

doi = "10.1021/ma991504o",

language = "英语",

volume = "33",

pages = "4856--4860",

journal = "Macromolecules",

issn = "0024-9297",

publisher = "American Chemical Society",

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TY - JOUR

T1 - Microstructure of semicrystalline poly(L-lactide)/poly(4-vinylphenol) blends evaluated from SAXS absolute intensity measurement

AU - Chen, Hsin Lung

AU - Liu, Hsing Huang

AU - Lin, J. S.

PY - 2000/6/27

Y1 - 2000/6/27

N2 - The semicrystalline morphology of melt-miscible poly(L-lactide) (PLLA)/poly(4-vinylphenol) (PVPh) blends was probed by small-angle X-ray scattering (SAXS) with the measurement of absolute intensity. Blending with PVPh enhanced the SAXS intensity associated with the lamellar stacks. This was attributed to the presence of PVPh in the interlamellar regions that enhanced the electron density contrast (Δη) between the crystalline and amorphous layers. The interlamellar morphology was quantitatively characterized by the magnitude of Δη deduced from Strobl-Schneider's one-dimensional correlation function assuming the corresponding two-phase model. Good agreement between the measured Δη and the values calculated by assuming a complete interlamellar incorporation indicated that nearly all PVPh was expelled into the interlamellar regions upon the crystallization of PLLA.

AB - The semicrystalline morphology of melt-miscible poly(L-lactide) (PLLA)/poly(4-vinylphenol) (PVPh) blends was probed by small-angle X-ray scattering (SAXS) with the measurement of absolute intensity. Blending with PVPh enhanced the SAXS intensity associated with the lamellar stacks. This was attributed to the presence of PVPh in the interlamellar regions that enhanced the electron density contrast (Δη) between the crystalline and amorphous layers. The interlamellar morphology was quantitatively characterized by the magnitude of Δη deduced from Strobl-Schneider's one-dimensional correlation function assuming the corresponding two-phase model. Good agreement between the measured Δη and the values calculated by assuming a complete interlamellar incorporation indicated that nearly all PVPh was expelled into the interlamellar regions upon the crystallization of PLLA.

UR - https://www.scopus.com/pages/publications/0034205256

U2 - 10.1021/ma991504o

DO - 10.1021/ma991504o

M3 - 文章

AN - SCOPUS:0034205256

SN - 0024-9297

VL - 33

SP - 4856

EP - 4860

JO - Macromolecules

JF - Macromolecules

IS - 13

ER -

Microstructure of semicrystalline poly(L-lactide)/poly(4-vinylphenol) blends evaluated from SAXS absolute intensity measurement

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