Microstructure aspects of radiation-cured networks: Cationically polymerized aromatic epoxy resins

被引：9

作者：

Kowandy, Christelle ^{[1
]}

Ranoux, Guillaume ^{[1
]}

Walo, Marta ^{[2
]}

Vissouvanadin, Bertrand ^{[4
]}

Teyssedre, Gilbert ^{[4
]}

Laurent, Christian ^{[4
]}

Berquand, Alexandre ^{[3
]}

Molinari, Michael ^{[3
]}

Coqueret, Xavier ^{[1
]}

机构：

[1] Univ Reims, Inst Chim Mol Reims, CNRS UMR 7312, BP 1039, F-51687 Reims, France

[2] Inst Nucl Chem & Technol, Dorodna 16, PL-03195 Warsaw, Poland

[3] Univ Reims, Lab Rech Nanosci, LRN EA 4682, 21 Rue Clement Ader, F-51685 Reims, France

[4] Univ Toulouse, LAPLACE, UMR CNRS 5213, 118 Route Narbonne, F-31062 Toulouse, France

来源：

RADIATION PHYSICS AND CHEMISTRY | 2018年 / 143卷

关键词：

Cationic polymerization; Aromatic epoxy monomers; Glass transition; Network properties; Radiation curing; Atomic force microscopy; Dynamic mechanical thermal analysis; Dielectric spectroscopy; CROSS-LINKING POLYMERIZATION; ELECTRON-BEAM; PHOTOPOLYMERIZATION; DIACRYLATES; FEATURES;

D O I：

10.1016/j.radphyschem.2017.09.006

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The thermo-mechanical properties and nanostructural features of epoxy aromatic resins cationically cured by UV visible or electron beam radiation have been studied by FT-NIR spectroscopy, dynamic mechanical analysis (DMA), dielectric spectroscopy (DS), and atomic force microscopy (AFM). The influence of formulation (nature and content of onium salt) and of curing parameters (doses, thermal treatment) on the thermophysical have been investigated. The presence of several relaxation domains observed by DMA and DS analysis confirms the presence of heterogeneities in the cured materials. Network formation is described by the percolation of glassy nanoclusters which are evidenced by AFM analyses. AFM probing by quantitative nanomechanical measurements confirms the gradual build-up of the local Young's modulus in good agreement with the macroscopic value.

引用

页码：20 / 26

页数：7

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