Modified chain dynamics in poly(dimethylsiloxane)/silica nanocomposites

Fragiadakis D; Pissis P; Bokobza L

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Modified chain dynamics in poly(dimethylsiloxane)/silica nanocomposites

机译：聚二甲基硅氧烷/二氧化硅纳米复合材料的改性链动力学

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The molecular dynamics of a series of poly(dimethylsiloxane) networks filled with silica nanoparticles synthesized in situ was studied using dielectric relaxation spectroscopy. In addition to the alpha-relaxation associated with the glass transition of the polymer matrix, we observe a slower alpha-relaxation. This behavior is discussed in terms of a gradual increase of relaxation times close to the surface of the nanoparticles. The range of this effect is estimated to be around 3 nm at T-g decreasing slightly with increasing temperature. The results are discussed in rclation to molecular dynarnics simulations of supercooled liquids close to an interface, as well as experimental studies of nanoconfined -lass forming liquids and thin polymer films. (c) 2006 Elsevier B.V. All riolits reserved.

机译：使用介电弛豫光谱技术研究了一系列填充有原位合成的二氧化硅纳米粒子的聚二甲基硅氧烷网络的分子动力学。除了与聚合物基质的玻璃化转变相关的α-松弛之外，我们观察到较慢的α-松弛。根据接近纳米颗粒表面的弛豫时间逐渐增加来讨论这种行为。估计该效应的范围在T-g处约为3 nm，随温度升高而略有降低。讨论了与界面附近的过冷液体的分子动力学模拟有关的结果，以及对纳米限制的成膜液体和聚合物薄膜的实验研究。（c）2006年Elsevier B.V.版权所有。

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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4页
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Fragiadakis D; Pissis P; Bokobza L;
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正文语种 eng
中图分类晶体学;
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dielectric properties; relaxation; electric modulus; glass transition; nanoparticles; polymers and organics; GLASS-TRANSITION; MOLECULAR-DYNAMICS; DIELECTRIC-SPECTROSCOPY; NETWORKS; BEHAVIOR; REINFORCEMENT; CONFINEMENT; RELAXATION; POLYMERS;

机译：介电性能;松弛;电模量;玻璃化转变;纳米粒子;聚合物和有机物;玻璃化转变;分子动力学;介电光谱;网络;性能;增强;约束;松弛;聚合物;

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1. Modified chain dynamics in poly(dimethylsiloxane)/silica nanocomposites [J] . Fragiadakis D, Pissis P, Bokobza L 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：聚二甲基硅氧烷/二氧化硅纳米复合材料的改性链动力学
2. Impact of Polymer Molecular Weight on the Dynamics of Poly(dimethylsiloxane)?Polysilicate Nanocomposites [J] . Gordon Glenn V., Schmidt Randall G., Quintero Marlitt, Macromolecules . 2010,第23期

机译：聚合物分子量对聚（二甲基硅氧烷）？聚硅酸盐纳米复合材料动力学的影响
3. Glass transition and segmental dynamics in poly(dimethylsiloxane)/silica nanocomposites studied by various techniques [J] . Fragiadakis D, Pissis P 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 . 2007,第47a51期

机译：通过各种技术研究聚二甲基硅氧烷/二氧化硅纳米复合材料的玻璃化转变和分段动力学
4. Dielectric behavior of Silica/Poly(dimethylsiloxane) nanocomposites. nano size effects [C] . I A M Ibrahim, A A F Zikry, M A Sharaf, International Conference on Structural Nano Composites . 2015

机译：二氧化硅/聚（二甲基硅氧烷）纳米复合材料的介电行为。纳米尺寸效果
5. I. THEORETICAL STUDY OF THE THERMOELASTIC AND ELASTIC PROPERTIES OF ELASTIN MODEL COMPOUNDS. II. MODELS FOR THE TRAPPING OF CYCLIC POLY(DIMETHYLSILOXANE) (PDMS) CHAINS IN PDMS NETWORKS AND IMPLICATIONS OF BACKBONE INVERSION ON THE CONFIGURATIONAL CHARACTERISTICS OF PDMS. III. THEORETICAL STUDY OF THE METHYL PROTON NMR SPECTRUM OF POLY(ALPHA-METHYLSTYRENE). [D] . DEBOLT, LAWRENCE C. 1986

机译：I.弹性蛋白模型化合物的热弹性和弹性性质的理论研究。二。 PDMS网络中圈闭聚二甲基硅氧烷（PDMS）链的模型以及骨干反演对PDMS构造特性的影响。三，聚（甲基-苯乙烯基）甲基质子核磁共振谱的理论研究。
6. Glass-Transition Dynamics of Mixtures of Linear Poly(vinyl methyl ether) with Single-Chain Polymer Nanoparticles: Evidence of a New Type of Nanocomposite Materials [O] . Beatriz Robles-Hernández, Marina González-Burgos, José A. Pomposo, 2019

机译：线性聚（乙烯基甲基醚）与单链聚合物纳米粒子的混合物的玻璃化动力学：新型纳米复合材料的证据。
7. Glass Transition and Molecular Dynamics in CoreShell-Type Nanocomposites Based on Fumed Silica and Polysiloxanes: Comparison between Poly(dimethylsiloxane) and Poly(ethylhydrosiloxane) [O] . -1

机译：基于气相二氧化硅和聚硅氧烷的CoreShell型纳米复合材料中的玻璃转变和分子动力学：聚（二甲基硅氧烷）与聚（乙基氢硅氧烷）的比较
8. Effect of Network Chain Length Distribution and In situ Precipitated Silica on the Low-Temperature Behaviour of Poly(dimethylsiloxane) Model Networks [R] . Clarson, S. J., Mark, J. E., Dodgson, K. 1988

机译：网络链长分布和原位沉淀二氧化硅对聚二甲基硅氧烷模型网络低温行为的影响

Modified chain dynamics in poly(dimethylsiloxane)/silica nanocomposites

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