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Application of a Coupling Agent to Improve the Dielectric Properties of Polymer-Based Nanocomposites

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Components interactions controlling starch-kaolinite composite films properties.

J A Mbey¹, F Thomas²

¹Université de Lorraine, Laboratoire Interdisciplinaire des Environnements Continentaux, UMR 7360, 15 Avenue du Charmois, B.P. 40, F-54501 Vandoeuvre-lès-Nancy Cedex, France; The University of Yaoundé I, Department of Inorganic Chemistry, Laboratory of Applied Inorganic Chemistry, PO Box 812, Yaoundé, Cameroon.

Carbohydrate Polymers

|December 16, 2014

Summary

This summary is machine-generated.

Starch-kaolinite composite interactions are weak due to electrostatic repulsion and hydrogen bonds. Calcium cations influence these interactions, potentially affecting composite film properties.

Keywords:

Coagulation Composite Interface Kaolinite Starch

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Area of Science:

Materials Science
Polymer Science
Colloid Science

Background:

Understanding filler-matrix interactions is crucial for optimizing composite material properties.
Starch and kaolinite are common biopolymer and clay components, respectively, used in composite materials.

Purpose of the Study:

To investigate the primary interactions between starch and kaolinite in composite materials.
To correlate these interactions with the macroscopic properties of starch-kaolinite composites.

Main Methods:

Homo- and hetero-coagulation experiments were conducted to monitor interactions.
Turbidity measurements and Infrared (IR) spectroscopy were employed for analysis.
The effect of calcium cations on interactions was examined.

Main Results:

Starch-kaolinite interactions were found to be extremely weak.
Electrostatic repulsion and hydrogen bond formation between negatively charged starch and kaolinite contribute to weak interactions.
Calcium cations were observed to influence these interactions.

Conclusions:

The weak interfacial interactions limit the macroscopic properties of starch-kaolinite composites.
Understanding these interactions provides a basis for improving composite material design.
Potential relationships between observed interactions and composite film properties are proposed.