Soluble sulfoxide biphenyl polyimide film with transmittance exceeding 90%

Shen, Jiulin; Jiang, Pengfei; Wang, Yao; Zhang, Feng; Li, Fu; Tu, Guoli

doi:10.1016/j.polymer.2022.125050

Cited by 22 publications

(14 citation statements)

References 40 publications

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“…That is, it should appear in the top right corner of Figure b. Compared with recent reports, the comprehensive performance of CPI-PA 4 obtained in this work is outstanding. ,− ,− The strategy of PA by in situ polymerization in CPI has significant advantages in improving the dimensional stability and thermal properties while maintaining the optical transparency of CPI films …”

Section: Resultsmentioning

confidence: 63%

Ultralow Coefficient of Thermal Expansion and a High Colorless Transparent Polyimide Film Realized Through a Reinforced Hydrogen-Bond Network by In Situ Polymerization of Aromatic Polyamide in Colorless Polyimide

Jiang,

Chen,

et al. 2023

ACS Appl. Mater. Interfaces

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Colorless polyimides (CPIs) are a key substrate material for flexible organic light-emitting diode (OLED) displays and have attracted worldwide attention. Here, in this paper, the dispersion and interfacial interaction of aromatic polyamide (PA) in CPI (synthesized from 4,4′-(hexafluoroisopropylidene) diphthalic anhydride (6FDA) and 2,2′-bis(trifluoromethyl)benzidine (TFMB)) were significantly improved by in situ polymerization, and colorless transparent macromolecular polyimide composites (CPI-PA x ) were successfully prepared by PA and CPI. By adjusting the ratio of PA to CPI, a high-performance engineering plastic with excellent film-forming properties was obtained. Molecular simulations confirmed the uniform distribution of PA in CPI and its interaction in polymers. In CPI-PA x , the CPI was locked by the PA chain, and numerous molecular chains were mutually entangled to form a hydrogen-bond network structure. Due to the strong interaction between the chains imparted by the hydrogen bonds of the PA, they do not slide under external forces and heating. In addition, the additive PA has excellent dimensional stability, thermal, and mechanical properties, and CPI has outstanding optical properties, so the synthesized CPI-PA x combines the comprehensive properties of PA and CPI. The CPI-PA x has excellent thermal and mechanical properties, with a thermal decomposition temperature of 499 °C, a glass transition temperature of 385 °C, a coefficient of thermal expansion of 0.8 ppm K −1 , a tensile strength of 50.9 MPa, and an elastic modulus of 3.9 GPa. Particularly, CPI-PA x has a 90% transmittance in the visible region. These data prove that the strategy of combining PA and CPI by in situ polymerization is an effective method to circumvent the bottleneck of CPI in the current flexible window application, and this design strategy is universal.

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Section: Resultsmentioning

confidence: 63%

Ultralow Coefficient of Thermal Expansion and a High Colorless Transparent Polyimide Film Realized Through a Reinforced Hydrogen-Bond Network by In Situ Polymerization of Aromatic Polyamide in Colorless Polyimide

Jiang,

Chen,

et al. 2023

ACS Appl. Mater. Interfaces

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“…[19][20][21] The polyimide film transmittance may exceed 90%. [22][23][24] Ma et al 25 produced polyimide film through the condensation of poly (pyromellitic dianhydride) and 4,4 0 -oxydianiline (Figure 1). First the poly (amic acid) was formed through the condensation of monomers, which was later converted to polyimide at high temperature.…”

Section: Polyimide Filmsmentioning

confidence: 99%

State-of-the-art of polyimide films reinforced with fullerene-design, features and applications

Kausar

2023

Journal of Thermoplastic Composite Materials

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Polyimide belongs to the class of high performance polymers containing imide functionalities in the backbone. Polyimide has wide ranging properties of optical transparency, heat stability, mechanical strength, dimensional stability, thermal conductivity, dielectric properties, etc. Fullerene is a zero dimensional hollow symmetrical nanocarbon, frequently employed as nanofiller in the polymers. Fullerene has been reinforced in the polyimide films to further augment the exclusive features and performance. This state-of-the-art review basically emphases the fundamentals, structure, properties, and applications of polyimide films, especially the films reinforced with fullerene nanofiller. The polyimide/fullerene nanocomposite films have been prepared using facile routes such as solution casting, spin casting, in situ method, and other film forming methods. Fullerene nanofiller has been filled in numerous designed polyimides. Number of experimental and theoretical studies have been performed on the high performance polymer/fullerene nanocomposite films. The structural diversity of the polymer/fullerene nanocomposite films and inimitable characteristics have led to significant applications in the optoelectronic devices, photodetectors, and sensors.

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“…Most of these studies suggest that homopolymer films do not exhibit thermal and mechanical strength required for the protection of optical surfaces on their own [ 16 , 17 , 18 ]. To overcome this issue, crosslinking and combining polymeric materials [ 18 , 19 , 20 , 21 ] or modifying the polymer surface with inorganic coatings to improve thermal, mechanical and optical properties and adhesion between the coating and the substrate [ 16 , 17 , 22 ] have been evaluated. Zhao et al fabricated liquid-release polymeric gel films with a novel bilayer structure which consist of a slippery liquid-locked rough top layer and liquid-supplied bottom layer by one-pot casting [ 19 ].…”

Section: Introductionmentioning

confidence: 99%

“…Polymeric sheets showed antimicrobial properties and high mechanical durability and were highly transparent (86−90% transmittance in visible spectrum) [ 20 ]. Sulfoxide biphenyl polyimide PI (TFSODA/BPDA) optical coatings prepared via a low-temperature process demonstrated high optical performance (88.5% between 380 and 780 nm) and good thermal properties [ 21 ]. A polyimide composite membrane with SiO 2 antireflective layer prepared by a sol-gel method exhibited good thermal stability and up to 93% optical transmittance between 500 and 800 nm [ 17 ].…”

Section: Introductionmentioning

confidence: 99%

CVD Deposited Epoxy Copolymers as Protective Coatings for Optical Surfaces

2023

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Copolymer thin films of glycidyl methacrylate (GMA), ethylene glycol dimethacrylate (EGDMA) and 2,4,6,8-tetramethyl-2,4,6,8-tetravinylcyclotetrasiloxane (V4D4) were synthesized via initiated chemical vapor deposition (iCVD) as protective coatings for optical surfaces. Chemical durability in various solvents, corrosion resistance, adhesion to substrate, thermal resistance and optical transmittance of the films were evaluated. Crosslinked thin films exhibited high chemical resistance to strong organic solvents and excellent adhesion to substrates. Poly(GMA-co-EGDMA) and poly(GMA-co-V4D4) copolymers demonstrated protection against water (<1% thickness loss), high salt resistance (<1.5% thickness loss), and high optical transparency (~90% in visible spectrum) making them ideal coating materials for optical surfaces. Combining increased mechanical properties of GMA and chemical durability V4D4, the iCVD process provides a fast and low-cost alternative for the fabrication of protective coatings.

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Soluble sulfoxide biphenyl polyimide film with transmittance exceeding 90%

Cited by 22 publications

References 40 publications

Ultralow Coefficient of Thermal Expansion and a High Colorless Transparent Polyimide Film Realized Through a Reinforced Hydrogen-Bond Network by In Situ Polymerization of Aromatic Polyamide in Colorless Polyimide

Ultralow Coefficient of Thermal Expansion and a High Colorless Transparent Polyimide Film Realized Through a Reinforced Hydrogen-Bond Network by In Situ Polymerization of Aromatic Polyamide in Colorless Polyimide

State-of-the-art of polyimide films reinforced with fullerene-design, features and applications

CVD Deposited Epoxy Copolymers as Protective Coatings for Optical Surfaces

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