Thermally reversible cross-linked poly(ether-urethane)s

被引：36

作者：

Gaina, C. ^{[1
]}

Ursache, O. ^{[1
]}

Gaina, V. ^{[1
]}

Varganici, C. D. ^{[1
]}

机构：

[1] Petru Poni Inst Macromol Chem, RO-700487 Iasi, Romania

来源：

EXPRESS POLYMER LETTERS | 2013年 / 7卷 / 07期

关键词：

thermal properties; polyurethanes; Diels-Alder reaction; networks; DIELS-ALDER REACTION; BEARING FURAN MOIETIES; POLY(STYRENE-CO-FURFURYL METHACRYLATE); MALEIMIDE; EPOXY; POLYMERS; DENDRIMERS; POLYMERIZATION; REMENDABILITY; SURFACES;

D O I：

10.3144/expresspolymlett.2013.60

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Cross-linked poly(ether-urethane)s were prepared by Diels-Alder (DA) reaction of the furan-containing poly(ether-urethane) to bismaleimides and showed thermal reversibility evidenced by differential scanning calorimetry and attenuated total reflectance in conjunction with Fourier transform infrared spectroscopy (ATR-FTIR). The furan-containing poly(ether-urethane) s were synthesized by the polyaddition reaction of 1,6-hexamethylene diisocyanate (HMDI) or 4,4'-dibenzyl diisocyanate (DBDI) to poly(tetramethylene ether) glycol (PTMEG having M-n = 250, 650, 1000, 1500 and 2000) and 2-[N,N-bis(2-methyl-2-hydroxyethyl)amino]furfuryl as chain extender by the solution prepolymer method. The molar ratio of isocyanate: PTMEG: chain extender varied from 2:1:1 to 4:1:3, which produces a molar concentration of furyl group ranging between 3.65.10(-4) and 1.25.10(-3) mol/g.

引用

页码：636 / 650

页数：15

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