Low-field NMR study of Nylon 6/silica composites

• Published in: Polymer testing Vol. 26; no. 4; pp. 501 - 504
• Main Authors: Preto, Mônica, Tavares, Maria Inês Bruno, Silva, Edemilson P. da
• Format: Journal Article
• Language: English
• Published: Oxford Elsevier Ltd 01.06.2007; Elsevier
• Subjects: Applied sciences; Composite; Composites; Exact sciences and technology; Forms of application and semi-finished materials; Nylon 6 and low-field NMR; Polymer industry, paints, wood; Technology of polymers; Composite; Nylon 6 and low-field NMR; Spin lattice relaxation; Dispersion degree; Dispersion reinforced material; NMR spectrometry; Low field; Experimental study; Silica; Composite material; Polymer filler interaction; Intermolecular interaction; Amide 6 polymer; Aliphatic polymer; Concentration effect; Proton; Thermodynamic properties
• ISSN: 0142-9418; 1873-2348
• DOI: 10.1016/j.polymertesting.2007.01.009

Hybrid Nylon 6/silica composites have been studied. The effect of silica ratio on miscibility was evaluated by nuclear relaxation measurements using low-field nuclear magnetic resonance (NMR). The silica ratio was found to influence its distribution in the polymer matrix. To better investigate the miscibility and interaction between both blend components we have used the proton spin–lattice ( T 1) and spin–spin ( T 2) relaxation times. The NMR results showed that, with up to 20% of silica, there is compatibility due to a weak intermolecular interaction. The relaxation data indicated that the direct measurements of proton T 1 and T 2, using low-field NMR can be a powerful resource to evaluate polymer Ny6/Si composite systems.