Synthesis and dynamic mechanical properties of cross-linked multiblock poly(urethane-imide) copolymers

Диденко, А. Л.; Иванов, А. Г.; Богданова, Е. А.; Smirnova, V. E.; Vaganov, G. V.; Попова, Е. Н.; Kuznetsov, Denis A.; Kobykhno, Ilya; Vasiliyeva, E. S.; Толочко, О. В.; Svetlichniy, V. M.; Yudin, V. E.; Kudryavtsev, V. V.

doi:10.1007/s11172-021-3279-z

Cited by 7 publications

(1 citation statement)

References 28 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…29 Didenko et al synthesized cross-linked multiblock poly(urethane-imide) copolymers and studied their viscoelastic properties. 30 Sang et al reviewed the various synthetic methods used to prepare poly(urethane-imide)s. 31 In fact, poly(urethane-imide)s have been explored for different applications such as biomaterials, 32 optical materials, 33 light-emitting materials, 34 UV-shielding materials 29,35 gas sensing, 36 and so forth.…”

Section: Introductionmentioning

confidence: 99%

Thermally stable poly(urethane‐imide)s with enhanced hydrophilicity for waterproof‐breathable textile coatings

Meena

Kerketta

Tripathi

et al. 2022

J of Applied Polymer Sci

View full text Add to dashboard Cite

Thermally stable, waterproof, hydrophilic, breathable poly(urethane‐imide) (PUI) films were prepared as a potential replacement for the existing polyurethanes (PU) with a lower degree of thermal stability for waterproof breathable clothing. Hydrophilic PUI films were prepared by reacting 4,4′‐ diphenylmethane diisocyanate (MDI), polyethylene glycol (PEG‐1500), and pyromellitic dianhydride (PMDA), with increasing hard segment (46%–61%) and compared with polyurethane films with similar PEG content. The breathability of PUI film is significantly higher than the PU film (~20%). Interestingly, despite the high degree of water sorption, the PUI films exhibited higher waterproofness (~85%) than the PU, which has been attributed to the presence of imide functionalities. The thermal stability of PUI was higher (Tmax1 ~ 420°C, Tmax2 ~ 600°C and char yield 21%) than the analogous PU (Tmax1 ~ 360°C, Tmax2 ~ 420°C, and char yield 6%). The waterproofness, water contact angle, and glass transition temperature are found to increase with increasing imide content, while the water sorption capacity and breathability decrease. The developed PUI coated fabric withstood hydrostatic pressure of ~3000 mbar, with a WVTR of 1200 g m−2 24 h−1, bestowing it excellent candidature as a waterproof breathable fabric.

show abstract