Thermoplastic and low dielectric constants polyimides based on BPADA-BAPP

ABSTRACT

The thermoplastic and low dielectric constants polyimides were introduced. The polyimides were prepared by pyromellitic dianhydride (PMDA) or 4,4ʹ-(4,4ʹ-Isopropylidenediphenoxy)diphthalic anhydride (BPADA) as anhydride monomer and 4,4ʹ-oxydianiline (ODA) or 2,2-bis(4-(4-aminephenoxy)phenyl)propane (BAPP) as amine monomer. The polyimides were well characterized by FT-IR, thermogravimetric analysis, dynamic thermomechanical analysis, dielectric measurement, and tensile test. The dielectric constants were 2.32–2.95 compared with 3.10 of ODA-PMDA polyimide, while partly polyimides were thermoplastic. The results indicated anhydride monomers, containing lateral methyl groups, made polyimides become thermoplastic. The results of molecular simulations via Materials Studio also proved this conclusion.

Graphical Abstract

KEYWORDS:

• Polyimides
• thermoplastic
• low dielectric constants
• molecular simulation
• thermal properties

Acknowledgments

Guorong Qiu thanked Professor Ma for his funds to support this research.

Additional information

Notes on contributors

Guorong Qiu

Guorong Qiu, the doctoral candidates works in South China university of technology.

Wenshi Ma

Wenshi Ma, the Professor  works in  South China university of technology.

Li Wu

Li Wu, the master was graduated from South China university of technology.