Optical, Dielectric, and Thermal Properties of Bio‐Based Polyimides Derived from An Isosorbide‐Containing Diamine DOI Open Access

Yoshiyuki Tsurusaki,

Ririka Sawada,

H. T. Liu

и другие.

Macromolecular Rapid Communications, Год журнала: 2025, Номер unknown

Опубликована: Фев. 9, 2025

Abstract The need for functional polymers derived from plant‐based materials has increased a carbon‐neutral perspective. Herein, six different semialicyclic isosorbide‐containing diamine‐based polyimides (ISSD‐PIs) are synthesized by incorporating isosorbide (ISS), which is D‐glucose derivative, into the diamine moiety to investigate relationship between chemical structure and optical, thermal, dielectric properties. Compared with conventional fully aromatic PIs, such as Kapton, as‐prepared ISSD‐PIs demonstrate excellent optical transparency, low refractive indices (1.554–1.633), birefringence (0.0084–0.0348) at 1310 nm, constants (2.93–3.36) moderate dissipation factors (0.0112–0.0267) 10 GHz. They also exhibit thermal stability, glass transition temperatures exceeding 250 °C 5% decomposition 400 °C. chirality of ISS skeleton remains intact, displaying characteristic circular dichroism. This study shows that incorporation PI chains enhances their properties while maintaining stability increasing free volume reducing intermolecular interactions. In addition, physical more dependent on rigidity dianhydride moiety, directly affects molecular packing chains, rather than moiety.

Язык: Английский

Optical, Dielectric, and Thermal Properties of Bio‐Based Polyimides Derived from An Isosorbide‐Containing Diamine DOI Open Access

Yoshiyuki Tsurusaki,

Ririka Sawada,

H. T. Liu

и другие.

Macromolecular Rapid Communications, Год журнала: 2025, Номер unknown

Опубликована: Фев. 9, 2025

Abstract The need for functional polymers derived from plant‐based materials has increased a carbon‐neutral perspective. Herein, six different semialicyclic isosorbide‐containing diamine‐based polyimides (ISSD‐PIs) are synthesized by incorporating isosorbide (ISS), which is D‐glucose derivative, into the diamine moiety to investigate relationship between chemical structure and optical, thermal, dielectric properties. Compared with conventional fully aromatic PIs, such as Kapton, as‐prepared ISSD‐PIs demonstrate excellent optical transparency, low refractive indices (1.554–1.633), birefringence (0.0084–0.0348) at 1310 nm, constants (2.93–3.36) moderate dissipation factors (0.0112–0.0267) 10 GHz. They also exhibit thermal stability, glass transition temperatures exceeding 250 °C 5% decomposition 400 °C. chirality of ISS skeleton remains intact, displaying characteristic circular dichroism. This study shows that incorporation PI chains enhances their properties while maintaining stability increasing free volume reducing intermolecular interactions. In addition, physical more dependent on rigidity dianhydride moiety, directly affects molecular packing chains, rather than moiety.

Язык: Английский

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