Effect of hydroxyl ended and end-capped multiarm star polymers on the curing process and mechanical characteristics of epoxy/anhydride thermosets

被引：17

作者：

Acebo, Cristina ^{[1
]}

Picardi, Annamaria ^{[1
]}

Fernandez-Francos, Xavier ^{[1
]}

De la Flor, Silvia ^{[2
]}

Ramis, Xavier ^{[3
]}

Serra, Angels ^{[1
]}

机构：

[1] Univ Rovira & Virgili, Dept Analyt & Organ Chem, E-43007 Tarragona, Spain

[2] Univ Rovira & Virgili, Dept Mech Engn, E-43007 Tarragona, Spain

[3] Univ Politecn Cataluna, ETSEIB, Thermodynam Lab, E-08028 Barcelona, Spain

来源：

PROGRESS IN ORGANIC COATINGS | 2014年 / 77卷 / 08期

关键词：

Star polymers; Hyperbranched; Epoxy resin; Thermosets; Stress; Toughness; HYPERBRANCHED POLYMER; EPOXY-RESINS; MORPHOLOGY; DIGLYCIDYLETHER; POLYESTERS; MODIFIERS; STRENGTH; GELATION; BUILDUP;

D O I：

10.1016/j.porgcoat.2014.04.014

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

Multiarm star polymers have been synthesized by cationic ring-opening polymerization of epsilon-caprolactone from a hyperbranched poly(ethyleneimine) core and end-capped with acetic anhydride. These star polymers have been used as modifiers in diglycidylether of bisphenol A/methyl tetrahydrophthalic anhydride/benzyl dimethylamine formulations. The curing process is studied by dynamic scanning calorimetry and rheometry and the resulting thermosets are characterized by dynamic mechanical thermal analysis and thermogravimetry. Internal stresses generated during curing are measured and interpreted in terms of the thermal mechanical properties of the cured materials. The influence of the modifier in the toughness improvement of the cured thermosets is determined by standardized impact tests and the microstructure of the material observed by scanning electron microscopy. (C) 2014 Elsevier B.V. All rights reserved.

引用

页码：1288 / 1298

页数：11

共 37 条

[1] New epoxy thermosets modified with multiarm star poly(lactide) with poly(ethyleneimine) as core of different molecular weight [J].

Acebo, Cristina ;

Fernandez-Francos, Xavier ;

Ferrando, Francesc ;

Serra, Angels ;

Ramis, Xavier .

EUROPEAN POLYMER JOURNAL, 2013, 49 (08) :2316-2326

[2] Multiarm star with poly(ethyleneimine) core and poly(ε-caprolactone) arms as modifiers of diglycidylether of bisphenol A thermosets cured by 1-methylimidazole [J].

Acebo, Cristina ;

Fernandez-Francos, Xavier ;

Ferrando, Francesc ;

Serra, Angels ;

Salla, Josep M. ;

Ramis, Xavier .

REACTIVE & FUNCTIONAL POLYMERS, 2013, 73 (03) :431-441

[3] Rubber-Toughened Epoxies: A Critical Review [J].

Bagheri, R. ;

Marouf, B. T. ;

Pearson, R. A. .

POLYMER REVIEWS, 2009, 49 (03) :201-225

[4] Mechanical properties of thin and thick coatings applied to various substrates .1. An elastic analysis of residual stresses within coating materials [J].

Benabdi, M ;

Roche, AA .

JOURNAL OF ADHESION SCIENCE AND TECHNOLOGY, 1997, 11 (02) :281-299

[5] The Morphology and Fracture Properties of Thermoplastic-Toughened Epoxy Polymers [J].

Brooker, R. D. ;

Kinloch, A. J. ;

Taylor, A. C. .

JOURNAL OF ADHESION, 2010, 86 (07) :726-741

[6] Synthesis and characterisation of star branched polyesters with dendritic cores and the effect of structural variations on zero shear rate viscosity [J].

Claesson, H ;

Malmström, E ;

Johansson, M ;

Hult, A .

POLYMER, 2002, 43 (12) :3511-3518

[7] Joint strength predictions for adhesive joints to be used over a wide temperature range [J].

da Silva, Lucas F. M. ;

Adams, R. D. .

INTERNATIONAL JOURNAL OF ADHESION AND ADHESIVES, 2007, 27 (05) :362-379

[8]

Eloundou J.P., MACROMOLECULES, P6917

[9]

Fernandez-Francos X., 2014, J POLYM SCI A, P61

[10]

Flores M., 2012, THERMOCHIM, P17

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