Probing the cooperative and local modes of a poly(methyl acrylate) sample via ESR spectroscopy

Andreozzi L; Autiero C; Faetti M; Giordano M; Zulli F

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Probing the cooperative and local modes of a poly(methyl acrylate) sample via ESR spectroscopy

机译：通过ESR光谱探测聚丙烯酸甲酯样品的合作模式和局部模式

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Electron spin resonance spectroscopy has been employed to analyze the probe rotational dynamics in a narrow distribution poly(methyl acrylate) melt. Dynamic regions have been found in the investigated temperature range and the coupling of the probe dynamics to the main and secondary polymer relaxations has been studied. The temperature dependence of the shear viscosity has been also measured, and, in the supercooled state of the host, it has been used to reveal the effects on the probe dynamics of both the local stiffness of the polymer and the occurrence of cooperativtity and dynamic heterogeneities in the matrix. Below T, the rotational dynamics follows activated regimes. (c) 2006 Elsevier B.V. All rights reserved.

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《Journal of Non-Crystalline Solids: A Journal Devoted to Oxide, Halide, Chalcogenide and Metallic Glasses, Amorphous Semiconductors, Non-Crystalline Films, Glass-Ceramics and Glassy Composites》 |2006年第49期|共5页
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Andreozzi L; Autiero C; Faetti M; Giordano M; Zulli F;
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正文语种 eng
中图分类晶体学;
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polymers and organics; electron spin resonance; structural relaxation; viscoelasticity; GLASS-TRANSITION; POLY(N-BUTYL ACRYLATE); CHARACTERISTIC LENGTH; CROSSOVER REGION; DYNAMICS; DIFFUSION; POLYMERS; ENTANGLEMENT; RELAXATION; SYSTEMS;

机译：聚合物和有机物;电子自旋共振;结构弛豫;粘弹性;玻璃化转变;聚丙烯酰胺（丙烯酸正丁酯）;特征长度;跨接区;动力学;扩散;聚合物;缠结;松弛;体系;

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1. Probing the cooperative and local modes of a poly(methyl acrylate) sample via ESR spectroscopy [J] . Andreozzi L, Autiero C, Faetti M, Journal of Non-Crystalline Solids: A Journal Devoted to Oxide, Halide, Chalcogenide and Metallic Glasses, Amorphous Semiconductors, Non-Crystalline Films, Glass-Ceramics and Glassy Composites . 2006,第42a49期

机译：通过ESR光谱探测聚丙烯酸甲酯样品的合作模式和局部模式
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5. Segmental dynamics in bulk and adsorbed poly(methyl acrylate)-d(3) by deuterium NMR. [D] . Lin, Wuu-Yung. 1997

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7. Probing the cooperative dynamics varying the side-chain length of poly(alkyl acrylate)s: ESR experiments [O] . Andreozzi L, Autiero C, Faetti M, 2007

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8. Light Scattering Studies of Poly(methyl Methacrylate)/(Poly(ethyl Acrylate)/Poly(butyl Acrylate)) Terpolymer [R] . Chu, B., Ying, Q., Lee, D. C., 1985

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Probing the cooperative and local modes of a poly(methyl acrylate) sample via ESR spectroscopy

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