Modification and thermal properties of syndiotactic-1,2-polybutadiene

Naofumi Naga, Shigenori Ishinoda, Hiroki Ishiguro, Gaku Ishikawa, Keiichi Noguchi

研究成果: Article

抄録

Side chain of syndiotactic-1,2-polybutadiene (SPBU) has been modified by means of hydrogenation, hydrosilylation with trialkylsilane compounds, or thiol–ene reaction with alkyl thiol compounds. Crystallization temperature (Tc) of the resulting polymers, which was detected on the cooling process from melting state, decreased with increasing the modification ratio. The molecular bulkiness of the compounds affected the degree of the Tc depression with increasing the modification ratio. The modification of SPBU with triphenyl silane increased glass transition temperature of the polymers. Isothermally crystallized SPBU samples modified by butane thiol (BT) showed two melting peaks derived from first crystallization (Tm1, higher temperature) and second crystallization (Tm2, lower temperature). The Tm1 decreased with increasing the modification ratio, whereas the Tm2 was almost independent of the modification ratio. The equilibrium melting temperatures of the Tm1s of the SPBU samples modified by BT were decreased with increasing the modification ratio. By contrast, the modification ratio did not affect the equilibrium melting temperatures of the Tm2s. Slopes in Hoffman–Week’s plot the modified SPBU samples indicated that Tm1 and Tm2 were originated from lamellar crystal and fringed micelle, respectively.

元の言語English
ページ(範囲)1-17
ページ数17
ジャーナルPolymer Bulletin
DOI
出版物ステータスAccepted/In press - 2018 5 26

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polybutadiene
Polybutadienes
Thermodynamic properties
thermodynamic properties
Crystallization
Sulfhydryl Compounds
Butane
thiols
melting
Melting point
Polymers
Melting
crystallization
butanes
Hydrosilylation
Silanes
Micelles
Temperature
Hydrogenation
polymers

ASJC Scopus subject areas

  • Chemistry(all)
  • Condensed Matter Physics
  • Polymers and Plastics
  • Materials Chemistry

これを引用

Naga, N., Ishinoda, S., Ishiguro, H., Ishikawa, G., & Noguchi, K. (受理済み/印刷中). Modification and thermal properties of syndiotactic-1,2-polybutadiene. Polymer Bulletin, 1-17. https://doi.org/10.1007/s00289-018-2380-4

Modification and thermal properties of syndiotactic-1,2-polybutadiene. / Naga, Naofumi; Ishinoda, Shigenori; Ishiguro, Hiroki; Ishikawa, Gaku; Noguchi, Keiichi.

:: Polymer Bulletin, 26.05.2018, p. 1-17.

研究成果: Article

Naga, Naofumi ; Ishinoda, Shigenori ; Ishiguro, Hiroki ; Ishikawa, Gaku ; Noguchi, Keiichi. / Modification and thermal properties of syndiotactic-1,2-polybutadiene. :: Polymer Bulletin. 2018 ; pp. 1-17.
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