Mechanism of Elastic Properties of Biodegradable Poly[(R)‑3-Hydroxybutyrate-co-4-hydroxybutyrate] Films Revealed by Synchrotron Radiation
Reversible elastic films of biobased and biodegradable poly[(R)-3-hydroxybutyrate-co-4-hydroxybutyrate] [P(3HB-co-4HB)] were prepared by uniaxial drawing procedures. Mechanical properties and highly ordered film structures were investigated by tensile testing and both static-state and in situ wide...
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| Published in | ACS omega Vol. 6; no. 11; pp. 7387 - 7393 |
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| Main Authors | , , , , , , , |
| Format | Journal Article |
| Language | English |
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American Chemical Society
23.03.2021
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| Abstract | Reversible elastic films of biobased and biodegradable poly[(R)-3-hydroxybutyrate-co-4-hydroxybutyrate] [P(3HB-co-4HB)] were prepared by uniaxial drawing procedures. Mechanical properties and highly ordered film structures were investigated by tensile testing and both static-state and in situ wide-angle X-ray diffraction and small-angle X-ray scattering with synchrotron radiation during stretching and relaxing. Despite the crystalline nature of the polymers, the elongation at break of these films was greater than 1500%. Reversible elasticity was achieved after the first 10 times of uniaxial stretching. X-ray measurement results indicated that on stretching, β-form molecular chains with a planar zigzag conformation were introduced from molecular chains with random coils in the amorphous regions between α-form lamellar crystals. Notably, the orientation of the α-form lamellar crystals increased after relaxation of the molecular chains with a planar zigzag conformation (β-form) between the lamellar crystals (α-form). Reversible elastic properties were regenerated by a planar zigzag conformation between the lamellar crystals, the extension of molecular chains in lamellar crystals by the rotation of molecular conformation, and changes in the degree of orientation of the lamellar crystals. |
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| AbstractList | Reversible elastic
films of biobased and biodegradable poly[(
R
)-3-hydroxybutyrate-
co
-4-hydroxybutyrate]
[P(3HB-
co
-4HB)] were prepared by uniaxial drawing
procedures. Mechanical properties and highly ordered film structures
were investigated by tensile testing and both static-state and
in situ
wide-angle X-ray diffraction and small-angle X-ray
scattering with synchrotron radiation during stretching and relaxing.
Despite the crystalline nature of the polymers, the elongation at
break of these films was greater than 1500%. Reversible elasticity
was achieved after the first 10 times of uniaxial stretching. X-ray
measurement results indicated that on stretching, β-form molecular
chains with a planar zigzag conformation were introduced from molecular
chains with random coils in the amorphous regions between α-form
lamellar crystals. Notably, the orientation of the α-form lamellar
crystals increased after relaxation of the molecular chains with a
planar zigzag conformation (β-form) between the lamellar crystals
(α-form). Reversible elastic properties were regenerated by
a planar zigzag conformation between the lamellar crystals, the extension
of molecular chains in lamellar crystals by the rotation of molecular
conformation, and changes in the degree of orientation of the lamellar
crystals. Reversible elastic films of biobased and biodegradable poly[( )-3-hydroxybutyrate- -4-hydroxybutyrate] [P(3HB- -4HB)] were prepared by uniaxial drawing procedures. Mechanical properties and highly ordered film structures were investigated by tensile testing and both static-state and wide-angle X-ray diffraction and small-angle X-ray scattering with synchrotron radiation during stretching and relaxing. Despite the crystalline nature of the polymers, the elongation at break of these films was greater than 1500%. Reversible elasticity was achieved after the first 10 times of uniaxial stretching. X-ray measurement results indicated that on stretching, β-form molecular chains with a planar zigzag conformation were introduced from molecular chains with random coils in the amorphous regions between α-form lamellar crystals. Notably, the orientation of the α-form lamellar crystals increased after relaxation of the molecular chains with a planar zigzag conformation (β-form) between the lamellar crystals (α-form). Reversible elastic properties were regenerated by a planar zigzag conformation between the lamellar crystals, the extension of molecular chains in lamellar crystals by the rotation of molecular conformation, and changes in the degree of orientation of the lamellar crystals. Reversible elastic films of biobased and biodegradable poly[(R)-3-hydroxybutyrate-co-4-hydroxybutyrate] [P(3HB-co-4HB)] were prepared by uniaxial drawing procedures. Mechanical properties and highly ordered film structures were investigated by tensile testing and both static-state and in situ wide-angle X-ray diffraction and small-angle X-ray scattering with synchrotron radiation during stretching and relaxing. Despite the crystalline nature of the polymers, the elongation at break of these films was greater than 1500%. Reversible elasticity was achieved after the first 10 times of uniaxial stretching. X-ray measurement results indicated that on stretching, β-form molecular chains with a planar zigzag conformation were introduced from molecular chains with random coils in the amorphous regions between α-form lamellar crystals. Notably, the orientation of the α-form lamellar crystals increased after relaxation of the molecular chains with a planar zigzag conformation (β-form) between the lamellar crystals (α-form). Reversible elastic properties were regenerated by a planar zigzag conformation between the lamellar crystals, the extension of molecular chains in lamellar crystals by the rotation of molecular conformation, and changes in the degree of orientation of the lamellar crystals. |
| Author | Takata, Masaki Kimura, Satoshi Iwata, Tadahisa Gan, Hongyi Hikima, Takaaki Kabe, Taizo Maehara, Akira Kawamura, Yuki |
| AuthorAffiliation | RIKEN, SPring-8 Center The University of Tokyo Materials Visualization Photon Science Group Institute of Multidisciplinary Research for Advanced Materials (IMRAM) Materials Structure Group I, The Research and Utilization Division Science of Polymeric Materials, Department of Biomaterial Sciences, Graduate School of Agriculture and Life Science Research Infrastructure Group RIKEN, Harima Institute/SPring-8 Center Niigata Research Laboratory |
| AuthorAffiliation_xml | – name: Materials Structure Group I, The Research and Utilization Division – name: The University of Tokyo – name: Materials Visualization Photon Science Group – name: Niigata Research Laboratory – name: Science of Polymeric Materials, Department of Biomaterial Sciences, Graduate School of Agriculture and Life Science – name: Research Infrastructure Group – name: RIKEN, Harima Institute/SPring-8 Center – name: Institute of Multidisciplinary Research for Advanced Materials (IMRAM) – name: RIKEN, SPring-8 Center |
| Author_xml | – sequence: 1 givenname: Yuki surname: Kawamura fullname: Kawamura, Yuki organization: RIKEN, SPring-8 Center – sequence: 2 givenname: Hongyi surname: Gan fullname: Gan, Hongyi organization: RIKEN, SPring-8 Center – sequence: 3 givenname: Taizo orcidid: 0000-0001-8417-2616 surname: Kabe fullname: Kabe, Taizo organization: Materials Structure Group I, The Research and Utilization Division – sequence: 4 givenname: Akira surname: Maehara fullname: Maehara, Akira organization: Niigata Research Laboratory – sequence: 5 givenname: Satoshi surname: Kimura fullname: Kimura, Satoshi organization: RIKEN, SPring-8 Center – sequence: 6 givenname: Takaaki surname: Hikima fullname: Hikima, Takaaki organization: RIKEN, Harima Institute/SPring-8 Center – sequence: 7 givenname: Masaki surname: Takata fullname: Takata, Masaki organization: Institute of Multidisciplinary Research for Advanced Materials (IMRAM) – sequence: 8 givenname: Tadahisa orcidid: 0000-0003-2731-3958 surname: Iwata fullname: Iwata, Tadahisa email: atiwata@g.ecc.u-tokyo.ac.jp organization: RIKEN, SPring-8 Center |
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| CitedBy_id | crossref_primary_10_1038_s41598_024_60949_z crossref_primary_10_1021_acsapm_1c01212 crossref_primary_10_1021_acsomega_4c02241 crossref_primary_10_1021_acsapm_1c00590 crossref_primary_10_1016_j_mtsust_2023_100577 crossref_primary_10_1021_acs_macromol_1c02056 crossref_primary_10_1016_j_colsurfa_2024_133714 |
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| Snippet | Reversible elastic films of biobased and biodegradable poly[(R)-3-hydroxybutyrate-co-4-hydroxybutyrate] [P(3HB-co-4HB)] were prepared by uniaxial drawing... Reversible elastic films of biobased and biodegradable poly[( )-3-hydroxybutyrate- -4-hydroxybutyrate] [P(3HB- -4HB)] were prepared by uniaxial drawing... Reversible elastic films of biobased and biodegradable poly[( R )-3-hydroxybutyrate- co -4-hydroxybutyrate] [P(3HB- co -4HB)] were prepared by uniaxial drawing... |
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| Title | Mechanism of Elastic Properties of Biodegradable Poly[(R)‑3-Hydroxybutyrate-co-4-hydroxybutyrate] Films Revealed by Synchrotron Radiation |
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