Preparation and Properties of Fluorine-Free and Organo-Soluble Polyesterimides and the Films With Good Optical Transparency and Thermal Stability
Xi Ren
Engineering Research Center of Ministry of Education for Geological Carbon Storage and Low Carbon Utilization of Resources, School of Materials Science and Technology, China University of Geosciences, Beijing, China
Contribution: Data curation (lead), Investigation (lead), Writing - original draft (lead)
Search for more papers by this authorDuanyi Li
Engineering Research Center of Ministry of Education for Geological Carbon Storage and Low Carbon Utilization of Resources, School of Materials Science and Technology, China University of Geosciences, Beijing, China
Contribution: Data curation (equal), Investigation (equal)
Search for more papers by this authorZhibin He
School of Material Science and Engineering, Key Laboratory of Polymer Chemistry and Physics of Ministry of Education, Peking University, Beijing, China
Contribution: Data curation (equal)
Search for more papers by this authorRuixuan Wang
Engineering Research Center of Ministry of Education for Geological Carbon Storage and Low Carbon Utilization of Resources, School of Materials Science and Technology, China University of Geosciences, Beijing, China
Contribution: Data curation (supporting)
Search for more papers by this authorChangxu Yang
Engineering Research Center of Ministry of Education for Geological Carbon Storage and Low Carbon Utilization of Resources, School of Materials Science and Technology, China University of Geosciences, Beijing, China
Contribution: Data curation (supporting)
Search for more papers by this authorShujun Han
Engineering Research Center of Ministry of Education for Geological Carbon Storage and Low Carbon Utilization of Resources, School of Materials Science and Technology, China University of Geosciences, Beijing, China
Contribution: Data curation (supporting)
Search for more papers by this authorHaifeng Yu
School of Material Science and Engineering, Key Laboratory of Polymer Chemistry and Physics of Ministry of Education, Peking University, Beijing, China
Contribution: Supervision (supporting)
Search for more papers by this authorCorresponding Author
Jingang Liu
Engineering Research Center of Ministry of Education for Geological Carbon Storage and Low Carbon Utilization of Resources, School of Materials Science and Technology, China University of Geosciences, Beijing, China
Correspondence:
Jingang Liu ([email protected])
Contribution: Conceptualization (lead), Funding acquisition (lead), Supervision (lead), Writing - review & editing (lead)
Search for more papers by this authorXi Ren
Engineering Research Center of Ministry of Education for Geological Carbon Storage and Low Carbon Utilization of Resources, School of Materials Science and Technology, China University of Geosciences, Beijing, China
Contribution: Data curation (lead), Investigation (lead), Writing - original draft (lead)
Search for more papers by this authorDuanyi Li
Engineering Research Center of Ministry of Education for Geological Carbon Storage and Low Carbon Utilization of Resources, School of Materials Science and Technology, China University of Geosciences, Beijing, China
Contribution: Data curation (equal), Investigation (equal)
Search for more papers by this authorZhibin He
School of Material Science and Engineering, Key Laboratory of Polymer Chemistry and Physics of Ministry of Education, Peking University, Beijing, China
Contribution: Data curation (equal)
Search for more papers by this authorRuixuan Wang
Engineering Research Center of Ministry of Education for Geological Carbon Storage and Low Carbon Utilization of Resources, School of Materials Science and Technology, China University of Geosciences, Beijing, China
Contribution: Data curation (supporting)
Search for more papers by this authorChangxu Yang
Engineering Research Center of Ministry of Education for Geological Carbon Storage and Low Carbon Utilization of Resources, School of Materials Science and Technology, China University of Geosciences, Beijing, China
Contribution: Data curation (supporting)
Search for more papers by this authorShujun Han
Engineering Research Center of Ministry of Education for Geological Carbon Storage and Low Carbon Utilization of Resources, School of Materials Science and Technology, China University of Geosciences, Beijing, China
Contribution: Data curation (supporting)
Search for more papers by this authorHaifeng Yu
School of Material Science and Engineering, Key Laboratory of Polymer Chemistry and Physics of Ministry of Education, Peking University, Beijing, China
Contribution: Supervision (supporting)
Search for more papers by this authorCorresponding Author
Jingang Liu
Engineering Research Center of Ministry of Education for Geological Carbon Storage and Low Carbon Utilization of Resources, School of Materials Science and Technology, China University of Geosciences, Beijing, China
Correspondence:
Jingang Liu ([email protected])
Contribution: Conceptualization (lead), Funding acquisition (lead), Supervision (lead), Writing - review & editing (lead)
Search for more papers by this authorFunding: This work was supported by Shenzhen Science and Technology Program, JSGG20210629144539012.
Xi Ren and Duanyi Li contributed equally to this work.
ABSTRACT
Fluorine-free, fully aromatic polyimide (PI) films, characterized by the excellent optical transparency and high-temperature endurance, have been successfully synthesized through either homopolymerization or copolymerization of an ester-containing diamine, 2-(4-aminobenzoate)-5-aminobiphenyl (ABABP) and two distinct dianhydrides: 2,2-bis[4-(3,4-dicarboxyphenoxy)phenyl]propane dianhydride (BPADA) and 9,9-bis[4-(3,4-dicarboxyphenoxy)phenyl]fluorene dianhydride (BPFPA). Owing to the good solubility of the developed PI-I to PI-V resins in polar aprotic solvents, particularly in N,N-dimethylacetamide (DMAc), N-methyl-2-pyrrolidone (NMP) and N,N-dimethylformamide (DMF), the synthesis process was performed through a two-stage chemical imidization technique. The polymer solutions of PI-I to PI-V in DMAc were fabricated into films that showed exceptional optical clarity, featured with the ultraviolet cutoff wavelength (λ) below 375 nm, the light transmission at 450 nm (T450) surpassed 80%, the b* values (CIE indices) below 4.5, and the turbidity percentage (haze values) under 0.5%. Despite the fact that a higher molar concentration of BPFPA components in the dianhydride segments led to a decline in the optical characteristics of the films, the thermal resistance was concurrently enhanced. The resulting copolymerized PI films exhibited a glass transition temperature (Tg) over 264.9°C, along with the coefficients of linear thermal expansion (CTE) values of 56.7 ~ 65.9 ppm/K in temperature range of 50 ~ 200°C.
Open Research
Data Availability Statement
Data sharing is not applicable to this article as no new data were created or analyzed in this study.
Supporting Information
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Data S1. Supporting Information. |
Please note: The publisher is not responsible for the content or functionality of any supporting information supplied by the authors. Any queries (other than missing content) should be directed to the corresponding author for the article.
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