Work

Fabrication of Aminopropyl POSS End Capped Polyimide Hybrids for Enhanced Hydrophobicity and Reduced Dielectric Properties

Year: 2025

Type: article

Abstract: Recently, research on organic–inorganic hybrids made from polyimide (PI) and polyhedral oligomeric silsesquioxane (POSS) nanoparticles has attracted considerable attention due to their exceptional properties, including low water absorption, high thermal stability, and low dielectric properties. This study explores the incorporation of POSS nanoparticles into PI matrices through covalent bonding and evaluates their impact on the physical properties of the PIs. Low‐dielectric constant and low‐dielectric loss PIs are synthesized using a simple approach that incorporates functionalized POSS molecules to introduce porosity and secondary relaxation behaviors into the polymer chains. Integrating POSS into the 1,2‐diphenylethane‐1,2‐diyl bis(4‐aminobenzoate) (HBABA)/4,4′‐(hexafluoroisopropylidene) diphthalic anhydride (6‐FDA) PI (HBF PI) matrix significantly reduced the dielectric constant (D k ) (at 1 MHz) of the HBF PI‐POSS (hereafter designated as HBFP) hybrids from 2.61 to 2.33, while maintaining stable loss tangents even up to 2.5% POSS content. In addition, the HBFP nanohybrids exhibited high water repellency.

Source: Macromolecular Chemistry and Physics

DOI: 10.1002/macp.202500015

Authors: Sivagangi Reddy Nagella, Jun Seok Lee, Wei‐Jin Zhang, Sung Soo Park, Chang‐Sik Ha

Institutions: Pusan National University, Dong-Eui University

Language: English

Topic: Synthesis and properties of polymers

Subfield: Polymers and Plastics

Field: Materials Science

Domain: Physical Sciences

Open Access status: hybrid

Estimated APC paid: $4,220

Funders: National Research Foundation, National Research Foundation of Korea, Ministry of Science and ICT, South Korea