Preparation of poly(lactic acid) films in a magnetic field and their microstructure

Rei Nakayama; Hiroki Ikake; Kimio Kurita; Shigeru Shimizu; Satoshi Kurumi; Kaoru Suzuki; Kohki Takahashi; Kazuo Watanabe

doi:10.1295/koron.2014-0046

Preparation of poly(lactic acid) films in a magnetic field and their microstructure

Rei Nakayama, Hiroki Ikake, Kimio Kurita, Shigeru Shimizu, Satoshi Kurumi, Kaoru Suzuki, Kohki Takahashi, Kazuo Watanabe

IMR - High Field Laboratory for Superconducting Materials

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

3 Citations (Scopus)

Abstract

Poly(L-lactide) (M_n = 1.0 × 10⁵) (PLLA10) films and crystalline PLLA/amorphous poly(DL-lactide) (M_w = 1.0 × 10⁴) (PDLLA1) blend films (PLLA10 PDLLA1) were prepared in a magnetic field and thermal annealing. The small-angle X-ray scattering peak of PLLA10 cast films was at q = 0.24nm^-1. That is, the peak is corresponding to the long-period of the PLLA10 crystals. On the other hand, the SAXS peak of PLLA10 PDLLA1 cast films was at q = 0.33nm^-1. This means that the long-period structure of PLLA10 changed with increasing the volume of amorphous regions in blend films. We thus suggest that such amorphous regions play an important role in preparation of PLLA oriented films in an applied magnetic field.

Original language	English
Pages (from-to)	661-666
Number of pages	6
Journal	Kobunshi Ronbunshu
Volume	72
Issue number	11
DOIs	https://doi.org/10.1295/koron.2014-0046
Publication status	Published - 2015

Keywords

Crystalline orientation
Magnetic field
Microstructure
Poly(DL-lactide)
Poly(L-lactide)

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10.1295/koron.2014-0046

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title = "Preparation of poly(lactic acid) films in a magnetic field and their microstructure",

abstract = "Poly(L-lactide) (Mn = 1.0 × 105) (PLLA10) films and crystalline PLLA/amorphous poly(DL-lactide) (Mw = 1.0 × 104) (PDLLA1) blend films (PLLA10 PDLLA1) were prepared in a magnetic field and thermal annealing. The small-angle X-ray scattering peak of PLLA10 cast films was at q = 0.24nm-1. That is, the peak is corresponding to the long-period of the PLLA10 crystals. On the other hand, the SAXS peak of PLLA10 PDLLA1 cast films was at q = 0.33nm-1. This means that the long-period structure of PLLA10 changed with increasing the volume of amorphous regions in blend films. We thus suggest that such amorphous regions play an important role in preparation of PLLA oriented films in an applied magnetic field.",

keywords = "Crystalline orientation, Magnetic field, Microstructure, Poly(DL-lactide), Poly(L-lactide)",

author = "Rei Nakayama and Hiroki Ikake and Kimio Kurita and Shigeru Shimizu and Satoshi Kurumi and Kaoru Suzuki and Kohki Takahashi and Kazuo Watanabe",

note = "Publisher Copyright: {\textcopyright} 2015, The Society of Polymer Science, Japan.",

year = "2015",

doi = "10.1295/koron.2014-0046",

language = "English",

volume = "72",

pages = "661--666",

journal = "Kobunshi Ronbunshu",

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TY - JOUR

T1 - Preparation of poly(lactic acid) films in a magnetic field and their microstructure

AU - Nakayama, Rei

AU - Ikake, Hiroki

AU - Kurita, Kimio

AU - Shimizu, Shigeru

AU - Kurumi, Satoshi

AU - Suzuki, Kaoru

AU - Takahashi, Kohki

AU - Watanabe, Kazuo

PY - 2015

Y1 - 2015

N2 - Poly(L-lactide) (Mn = 1.0 × 105) (PLLA10) films and crystalline PLLA/amorphous poly(DL-lactide) (Mw = 1.0 × 104) (PDLLA1) blend films (PLLA10 PDLLA1) were prepared in a magnetic field and thermal annealing. The small-angle X-ray scattering peak of PLLA10 cast films was at q = 0.24nm-1. That is, the peak is corresponding to the long-period of the PLLA10 crystals. On the other hand, the SAXS peak of PLLA10 PDLLA1 cast films was at q = 0.33nm-1. This means that the long-period structure of PLLA10 changed with increasing the volume of amorphous regions in blend films. We thus suggest that such amorphous regions play an important role in preparation of PLLA oriented films in an applied magnetic field.

AB - Poly(L-lactide) (Mn = 1.0 × 105) (PLLA10) films and crystalline PLLA/amorphous poly(DL-lactide) (Mw = 1.0 × 104) (PDLLA1) blend films (PLLA10 PDLLA1) were prepared in a magnetic field and thermal annealing. The small-angle X-ray scattering peak of PLLA10 cast films was at q = 0.24nm-1. That is, the peak is corresponding to the long-period of the PLLA10 crystals. On the other hand, the SAXS peak of PLLA10 PDLLA1 cast films was at q = 0.33nm-1. This means that the long-period structure of PLLA10 changed with increasing the volume of amorphous regions in blend films. We thus suggest that such amorphous regions play an important role in preparation of PLLA oriented films in an applied magnetic field.

KW - Crystalline orientation

KW - Magnetic field

KW - Microstructure

KW - Poly(DL-lactide)

KW - Poly(L-lactide)

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DO - 10.1295/koron.2014-0046

M3 - Article

AN - SCOPUS:84962517710

SN - 0386-2186

VL - 72

SP - 661

EP - 666

JO - Kobunshi Ronbunshu

JF - Kobunshi Ronbunshu

IS - 11

ER -

Preparation of poly(lactic acid) films in a magnetic field and their microstructure

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Keywords

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