Anionic copolymerization of DGEBA with two bicyclic bis(γ-lactone) derivatives using tertiary amines as initiators

被引：12

作者：

Arasa, Merce ^{[1
]}

Ramis, Xavier ^{[2
]}

Salla, Josep Maria ^{[2
]}

Mantecon, Ana ^{[1
]}

Serra, Angels ^{[1
]}

机构：

[1] Univ Rovira & Virgili, Dept Quim Analit & Quim Organ, Tarragona 43007, Spain

[2] Univ Politecn Cataluna, Lab Termodinam, ETSEIB, E-08028 Barcelona, Spain

来源：

POLYMER | 2009年 / 50卷 / 10期

关键词：

Anionic polymerization; Thermosets; DSC; CROSS-LINKABLE POLYMERS; SPIROCYCLIC BIS(GAMMA-LACTONE)S; ALTERNATING COPOLYMERIZATION; THERMOSETS; SHRINKAGE; KINETICS; EPOXIDE;

D O I：

10.1016/j.polymer.2009.03.030

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

The anionic copolymerization, to form thermosets, of diglycidylether of bisphenol A (DGEBA) with two condensed bis(gamma-lactone)s (bisMe and bisPhe) using 4-(N,N-dimethylamino)pyridine (DMAP), 1,8-diazabicyclo[5.4.0]undec-7-ene (DBU), and 1-methylimidazole (1MI) as initiators was studied by differential scanning calorimetry (DSC). The kinetics was evaluated by isoconversional procedures. The evolution of the typical functional groups that form or disappear during curing was followed by Fourier transform infrared in the attenuated-total-reflection mode (FTIR/ATR) to clarify the reactive processes that takes place. Unexpected processes, which lead to the formation of five-membered lactones, were detected when non-stoichiometric proportions of monomers were used. The stoichiometric DGEBA/bislactone ratio produces the expected alternate poly(ester-ketone) network. The thermal degradability of the materials obtained was evaluated by TGA, and their reworkable character was confirmed. Materials obtained from stoichiometric mixtures were completely soluble in ethanolic KOH. (C) 2009 Elsevier Ltd. All rights reserved.

引用

页码：2228 / 2236

页数：9

共 20 条

[1]

[Anonymous], 2002, ANAL ANAL CHEM, DOI DOI 10.1021/AC60131A045

[2] ANIONIC COPOLYMERIZATION OF BISLACTONE END-CAPPED DIOLS WITH THE DIGLYCIDYL ETHER OF BISPHENOL-A [J].

BRADY, RF ;

SIKES, AM .

MACROMOLECULES, 1991, 24 (03) :688-692

[3] Characterization of thermally reworkable thermosets: materials for environmentally friendly processing and reuse [J].

Chen, JS ;

Ober, CK ;

Poliks, MD .

POLYMER, 2002, 43 (01) :131-139

[4] ANIONIC ALTERNATING RING-OPENING COPOLYMERIZATION OF SPIROCYCLIC BIS(GAMMA-LACTONE)S WITH BISEPOXIDES AND VOLUME CHANGE DURING THE COPOLYMERIZATION [J].

CHUNG, K ;

TAKATA, T ;

ENDO, T .

MACROMOLECULES, 1995, 28 (05) :1711-1713

[5] KINETIC PARAMETERS FROM THERMOGRAVIMETRIC DATA [J].

COATS, AW ;

REDFERN, JP .

NATURE, 1964, 201 (491) :68-&

[6] Crosslinking of mixtures of DGEBA with 1,6-dioxaspiro[4.4]nonan-2,7-dione initiated by tertiary amines, Part II:: Thermo-mechanical properties and reworkability [J].

Fernandez-Francos, X. ;

Salla, J. M. ;

Mantecon, A. ;

Serra, A. ;

Ramis, X. .

POLYMER DEGRADATION AND STABILITY, 2008, 93 (04) :760-769

[7] SYNTHESIS OF DIGLICYDILESTERS WITH ALICYCLIC IMIDE STRUCTURE AND THEIR THERMAL AND TERTIARY AMINE-CATALYZED CURING [J].

GALIA, M ;

SERRA, A ;

MANTECON, A ;

CADIZ, V .

JOURNAL OF APPLIED POLYMER SCIENCE, 1995, 56 (02) :193-200

[8] New thermosets obtained by cationic copolymerization of DGEBA with γ-caprolactone with improvement in the shrinkage.: II.: Time-temperature-transformation (TTT) cure diagram [J].

Gonzalez, Servando ;

Fernandez-Francos, Xavier ;

Salla, Josep Maria ;

Serra, Angels ;

Mantecon, Ana ;

Ramis, Xavier .

JOURNAL OF APPLIED POLYMER SCIENCE, 2007, 104 (05) :3406-3416

[9] THE DECARBOXYLATIVE ACYLATION OF SUCCINIC ACID DERIVATIVES .2. ORTHO-HYDROXYPHENYLSUCCINIC, TRICARBALLYLIC, AND THIOBENZAMIDOSUCCINIC ACID [J].

LAWSON, A .

JOURNAL OF THE CHEMICAL SOCIETY, 1957, (JAN) :144-150

[10] DSC studies of the curing mechanisms and kinetics of DGEBA using imidazole curing agents [J].

Ooi, SK ;

Cook, WD ;

Simon, GP ;

Such, CH .

POLYMER, 2000, 41 (10) :3639-3649

← 1 2 →