Crystallization of a Polyamide 6/Montmorillonite Nanocomposite at Rapid Cooling. Issue 9 (6th December 2012)

• Record Type: Journal Article
• Authors: Mileva, Daniela; Monami, Andrea; Cavallo, Dario; Alfonso, Giovanni C.; Portale, Giuseppe; Androsch, René
• Is Part Of: Macromolecular materials and engineering. Volume 298:Issue 9(2013:Sep.)
• Page Start: 938
• Page End: 943
• Publication Date: 2012-12-06
• Subjects: Plastics -- Periodicals; Polymers -- Periodicals; Polymerization -- Periodicals; 547.705
• DOI: 10.1002/mame.201200253
• Languages: English
• ISSNs: 1438-7492

Abstract

<abstract abstract-type="main" xml:lang="en"> <title>Abstract</title> <p>The crystallization behavior of a polyamide 6/organo‐modified montmorillonite (PA 6/OMMT) nanocomposite has been investigated by scanning chip calorimetry and wide‐angle X‐ray scattering, with emphasis placed on the evaluation of the effect of supercooling/cooling rate on the crystal/mesophase polymorphism of the PA 6 matrix. Presence of OMMT has negligible effect on the kinetics of formation of α‐crystals of PA 6 at low cooling rate while there is observed enhanced nucleation of γ‐mesophase on fast cooling. Furthermore, addition of OMMT leads to a distinct increase of the cooling rate required to completely vitrify the amorphous state. The performed experiments demonstrate that the nucleating effect of OMMT in PA 6/OMMT nanocomposites is of particular importance at cooling conditions relevant in polymer processing. <boxed-text content-type="graphic" position="anchor" orientation="portrait"><graphic position="anchor" mimetype="image" xlink:href="ark:/27927/pgg37f7t38r" orientation="portrait" xlink:type="simple" xmlns:xlink="http://www.w3.org/1999/xlink" /></boxed-text></p> </abstract>