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Partially Bio-based Colorless and Transparent Poly(amide-imide)s Derived from 2,5-Furandicarboxylic Acid
Two series of partially bio-based colorless and transparent poly(amide-imide)s (CPAIs) derived from bio-based 2,5-furandicarboxylic acid (FDCA) were...
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Fluorine Substitution Effect on the Material Properties in Transparent Aromatic Polyimides
The recent development of flexible display technology raised additional requirements for optical and electric properties of polyimides, accelerating...
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Synthesis and Properties of Colorless Transparent Polyimides with Low CTE and High Tensile Strength
AbstractTo develop the colorless transparent fluorinated polyimide (PI) with low coefficient of thermal expansion (CTE) and high tensile strength, a...
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Preparation and properties of semi-alicyclic thermoplastic polyimide sheets from stereoisomeric hydrogenated pyromellitic dianhydrides and fluorinated diamine
Two semi-alicyclic thermoplastic polyimides (PI) have been prepared from stereoisomeric hydrogenated pyromellitic dianhydrides, including...
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Improvement of Surface Hardness of Transparent Poly(amide-imide) Films Using Fumed Silica Nanoparticles
A hard coating is generally applied to transparent polymer films in flexible displays to protect the surface from scratching and abrasion. The degree...
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Facile synthesis of new aromatic cardo polyamides based on 9,9-bis(4-iodophenyl)xanthene via C–N coupling reaction and properties
9,9-Bis(4-iodophenyl)xanthene (BIPX) was prepared in good yield by the sequential diazotization–iodination of 9,9-bis(4-aminophenyl)xanthene with a...
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Ultrafast Biodegradation Pathway of Polyimides Using Aromatic Diamine with Two Spiro Moieties Derived from Camphor
As a key structural element, polyimides (PIs) are garnering attention as high-functional polymers in the microelectronics and optical fields....
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Influence of diamine moieties on the gas permeation performances of polyimide: perspectives from experiment and simulation
This work reported the gas permeation performances of three 6FDA-based polyimides, including 6FDA-DABA, 6FDA-ODA and 6FDA-TFDB, which contain polar...
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Highly tough, colorless, transparent polyamide-imide films from one reaction vessel without purification
Polyamide-imide varnishes and films were prepared from one reaction vessel through a continuous process of amidation, chemical imidization, and acid...
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Highly Heat-Resistant Polymeric Coatings of Optical Fibers
Abstract—The current state of the art in the field of highly heat-resistant optical fiber coatings based on polyimides and polyamides is reviewed....
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Effect of Low-temperature Imidization on Properties and Aggregation Structures of Polyimide Films with Different Rigidity
The traditional high-temperature preparation process of polyimide can cause many problems and limits the wider application in extreme conditions. An...
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Construction of Safety and Non-flammable Polyimide Separator Containing Carboxyl Groups for Advanced Fast Charing Lithium-ion Batteries
With the wide applications of lithium-ion batteries (LIBs) in electronic devices and electric vehicles, it is of great importance to improve their...
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Fabrication and Properties of Glass Fiber-Reinforced Composites Using Polyimide Prepregs with Inorganic Nanofillers
Numerous studies have addressed the utilization of polyimide (PI) and silica for improving the properties of hybrid composites. However, the...
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Development of High-Performance Composites with Molecular Weight Controlled Polyimide Oligomers End-Capped with Phenylethynyl Groups
A series of molecular weight controlled polyimide oligomer (Oligo-PI) resins were developed via the polymerization of...
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Curing kinetics, thermal and adhesive properties of phthalonitrile/aromatic diamine systems
The present work reports on the synthesis of an easily processable phthalonitrile monomer (BBPN) with isobutyl segment. The effect of various curing...
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Synthesis of a new diamine and its effect on the residual stress of colorless polyimide
A new diamine was designed and synthesized to improve the flexibility of colorless polyimides by reducing residual stress. Four variations of...
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Quantitative analysis of stereoscopic molecular orientations in thermally reactive and heterogeneous noncrystalline thin films via variable-temperature infrared pMAIRS and GI-XRD
The quantitative estimation of stereoscopic molecular orientations in semicrystalline polymer thin films with characteristic heterogeneous structures...
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Highly Soluble Phenylethynyl-terminated Imide Oligomers and Thermosetting Polyimides Based on 2,2′,3,3′-Biphenyltetracarboxylic Dianhydride
The properties of a series of imide oligomers were characterized according to their molecular weights, solubility, and thermal and rheological...
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High thermal conductivity and low absorptivity/ emissivity properties of transparent fluorinated polyimide films
Polyimide film materials are a very promising and high-performance polymer in space application. However, the deep coloration of conventional...
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Fluorinated polyimide/POSS hybrid polymers with high solubility and low dielectric constant
A series of fluorinated polyimide/POSS hybrid polymers (FPI-4-FPI-16) were prepared via a facile synthetic route using...