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- W2067245877 abstract "Polyimides with intrinsic microporosity were readily prepared by introducing Troger’s base (TB) into the polymer backbone via polymerization between imide-containing diamines and dimethoxymethane (DMM). Two imide-containing diamines were prepared by reaction of 2,5-dimethyl-1,4-phenylenediamine (DPD) with 4,4′-(hexafluoroisopropylidene)diphthalic anhydride (6FDA) and 3,3′,4,4′-benzophenonetetracarboxylic dianhydride (BTDA). The resulting polyimides were readily soluble in common organic solvents, had good mechanical properties, with tensile strength in the range of 59–64 MPa and elongation at break of 5–17%, good thermal stability and extremely high glass transition temperatures (Tgs), up to 425 °C. The polyimides with incorporated TB units had high fractional free volume (FFV ≥ 0.215) resulting from poor chain-packing and exhibited significant microporosity and good gas transport properties. The novel polymer architecture in this study extends the development of polyimides with intrinsic microporosity fo..." @default.
- W2067245877 created "2016-06-24" @default.
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- W2067245877 date "2014-05-14" @default.
- W2067245877 modified "2023-10-16" @default.
- W2067245877 title "Intrinsically Microporous Soluble Polyimides Incorporating Tröger’s Base for Membrane Gas Separation" @default.
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- W2067245877 doi "https://doi.org/10.1021/ma5007073" @default.
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