Microstructure changes of a polypropylene/montmorillonite nanocomposite in a single screw extruder

作者：Huang HX^*; Huang YF; Wang CY; Zhang YH

来源：Journal of Materials Science Letters, 2003, 22(21): 1547-1549.

DOI：10.1023/A:1026123802816

• Screw extruders

Polymer nanocomposites based on organically modified layered silicates, e.g., organic-montmorillonite (org-MMT), exhibit attractive properties, such as increased mechanical properties, reduced gas and liquid permeability, improved heat, solvent and UV resistance, greater dimensional stability at elevated temperature, improved optical and electrical properties, and enhanced flame retardant properties [1-4]. Three different methods, in situ polymerization, polymer intercalation from solution, and direct polymer melt intercalation, have been used to synthesize layered silicate-based polymer nanocomposites [5]. The third method would greatly expand the commercial opportunities for nanocomposite technology because of its low cost, high productivity and compatibility with current polymer processing techniques [6]. In recent years, some researchers employed the direct melt intercalation technique to prepare the polymer nanocomposites [6-12]. However, these studies used a laboratoryscale twin screw extruder or internal mixer to yield nanocomposites and then investigated the microstructure and properties of only the as-extruded pellets or samples.

• 出版日期2003-11-1
• 单位华南理工大学