Polymer Dynamics in Epoxy/Alumina Nanocomposites Studied by Various Techniques

被引：21

作者：

Kyritsis, Apostolos ^{[1
]}

Vikelis, Georgios ^{[1
]}

Maroulas, Panayiotis ^{[1
]}

Pissis, Polycarpos ^{[1
]}

Milosheva, Boryana ^{[2
]}

Kotsilkova, Rumiana ^{[2
]}

Toplijska, Antonia ^{[2
]}

Silvestre, Clara ^{[3
]}

Duraccio, Donatella ^{[3
]}

机构：

[1] Natl Tech Univ Athens, Dept Phys, Athens 15780, Greece

[2] Bulgarian Acad Sci, Cent Lab Physicochem Mech, BG-1113 Sofia, Bulgaria

[3] CNR, Inst Chem & Technol Polymers, I-80078 Pozzuoli, NA, Italy

来源：

JOURNAL OF APPLIED POLYMER SCIENCE | 2011年 / 121卷 / 06期

关键词：

epoxy/alumina nanocomposites; boehmite; polymer dynamics; glass transition; dielectric properties; DIELECTRIC-RELAXATION SPECTROSCOPY; BOEHMITE ALUMINA NANOCOMPOSITES; GLASS-TRANSITION TEMPERATURE; MOLECULAR-DYNAMICS; BEHAVIOR; REINFORCEMENT; CONFINEMENT; COMPOSITES; MORPHOLOGY; NETWORKS;

D O I：

10.1002/app.34161

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Epoxy/alumina nanocomposites of various compositions were prepared by dispersing modified and nonmodified boehmite nanoparticles in diglycidyl ether of bisphenol-A using diethylenetriamine as curing agent. Measurements of the viscosity of the nanodispersions provided information on particle-particle and particle-resin interactions. The structure of the nanocomposites was studied by scanning electron microscopy on fractured samples. Effects of nanoparticles on polymer dynamics was studied in detail by dynamic mechanical thermal analysis and two dielectric techniques, broadband dielectric relaxation spectroscopy and thermally stimulated depolarization currents. Three secondary relaxations, c, b, and x, the segmental a relaxation associated with the glass transition, and an interfacial relaxation, in the order of increasing frequency/decreasing temperature, were observed and studied. A correlation between viscosity (of the nanodispersions), storage modulus, glass transition temperature, real part of dielectric permittivity, and ductility of the nanocomposites was observed. (C) 2011 Wiley Periodicals, Inc. J Appl Polym Sci 121: 3613-3627, 2011

引用

页码：3613 / 3627

页数：15

共 54 条

[1] Effects of confinement on material behaviour at the nanometre size scale [J].

Alcoutlabi, M ;

McKenna, GB .

JOURNAL OF PHYSICS-CONDENSED MATTER, 2005, 17 (15) :R461-R524

[2] Polymer-layered silicate nanocomposites: Preparation, properties and uses of a new class of materials [J].

Alexandre, Michael ;

Dubois, Philippe .

Materials Science and Engineering: R: Reports, 2000, 28 (1-2) :1-63

[3] Glass-transition temperature behavior of alumina/PMMA nanocomposites [J].

Ash, BJ ;

Siegel, RW ;

Schadler, LS .

JOURNAL OF POLYMER SCIENCE PART B-POLYMER PHYSICS, 2004, 42 (23) :4371-4383

[4] Mechanical behavior of alumina/poly(methyl methacrylate) nanocomposites [J].

Ash, BJ ;

Siegel, RW ;

Schadler, LS .

MACROMOLECULES, 2004, 37 (04) :1358-1369

[5] Epoxy layered silicate nanocomposites [J].

Becker, O ;

Simon, GP .

INORGANIC POLYMERIC NANOCOMPOSITES AND MEMBRANES, 2005, 179 :29-82

[6] Interrelation between primary and secondary relaxations in polymerizing systems based on epoxy resins [J].

Beiner, M ;

Ngai, KL .

MACROMOLECULES, 2005, 38 (16) :7033-7042

[7] Molecular dynamics in nanostructured polyimide-silica hybrid materials and their thermal stability [J].

Bershtein, VA ;

Egorova, LM ;

Yakushev, PN ;

Pissis, P ;

Sysel, P ;

Brozova, L .

JOURNAL OF POLYMER SCIENCE PART B-POLYMER PHYSICS, 2002, 40 (10) :1056-1069

[8] Tribological Properties of LDPE plus Boehmite Composites [J].

Brostow, Witold ;

Datashvili, Tea ;

Kao, David ;

Too, Jonathan .

POLYMER COMPOSITES, 2010, 31 (03) :417-425

[9] Reinforcement of polymers with carbon nanotubes. The role of an ordered polymer interfacial region. Experiment and modeling [J].

Coleman, Jonathan N. ;

Cadek, Martin ;

Ryan, Kevin P. ;

Fonseca, Antonio ;

Nagy, Janos B. ;

Blau, Werner J. ;

Ferreira, Mauro S. .

POLYMER, 2006, 47 (26) :8556-8561

[10] DIELECTRIC AND THERMALLY STIMULATED DISCHARGE CURRENT STUDIES OF RUBBER-MODIFIED EPOXY-RESINS [J].

DELIDES, CG ;

VATALIS, AS ;

PISSIS, P ;

PETHRICK, RA .

JOURNAL OF MACROMOLECULAR SCIENCE-PHYSICS, 1993, B32 (03) :261-274

← 1 2 3 4 5 6 →