Investigation of Polymer-Filler Interactions in TiO2-Filled Poly(n-alkyl methacrylates) by Low-Field NMR Relaxometry

被引：8

作者：

Guthausen, Gisela ^{[1
]}

Raentzsch, Volker ^{[1
]}

Biquet, Cloe ^{[1
,2
]}

Schlabach, Sabine ^{[3
]}

Wilhelm, Manfred ^{[1
]}

机构：

[1] Karlsruhe Inst Technol, Inst Chem Technol & Polymer Chem, D-76128 Karlsruhe, Germany

[2] Ecole Natl Super Chem, F-59652 Villeneuve Dascq, France

[3] Karlsruhe Inst Technol, Inst Appl Mat, D-76344 Eggenstein Leopoldshafen, Germany

来源：

MACROMOLECULAR CHEMISTRY AND PHYSICS | 2014年 / 215卷 / 09期

关键词：

low-field NMR relaxometry; molecular motional modes; polymeric nanocomposites; poly(n-alkyl methacrylates); NUCLEAR-MAGNETIC-RESONANCE; RELAXATION; DYNAMICS; ELASTOMERS; BACKBONE;

D O I：

10.1002/macp.201400017

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Low-field NMR relaxometry is sensitive to molecular mobility within well-defined time windows and can thus be applied to study interactions between polymers and inorganic filler particles in composite materials. Volume fraction and dispersion of the filler influence the polymer chain dynamics, which also modify the macroscopic properties of the polymer composites. As model systems, TiO2-filled poly(n-alkyl methacrylates) with different side-chain lengths and filler contents are prepared by melt mixing. Several H-1 NMR relaxation parameters, which are sensitive and selective toward polymer-filler interactions, are investigated at a Larmor frequency of 20 MHz as a function of temperature. Both physical and empirical models are used to analyze the NMR data, and the results are compared with the aim of an unambiguous detection of polymer-filler interactions.

引用

页码：851 / 858

页数：8

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