NDLI: Crystallization kinetics of polyamide 11 in the presence of sepiolite and montmorillonite nanofillers

Content Provider	Springer Nature Link
Author	Jariyavidyant, Katalee Focke, Walter Androsch, René
Copyright Year	2016
Abstract	The crystallization kinetics of polyamide 11 (PA 11) in the presence of sepiolite and organo-modified montmorillonite nanofillers has been studied in a wide range of temperatures and cooling rates by conventional differential scanning calorimetry (DSC) and fast scanning chip calorimetry (FSC). The presence of the nanofillers has a negligible effect on the crystallization temperature of PA 11 at low cooling rates. However, at rapid cooling conditions a distinct nucleating effect of the nanofillers is detected. The critical cooling rate to suppress crystallization increases from 600 K s−1 to about 1000 and 3000 K s−1 in nanocomposites containing sepiolite and montmorillonite, respectively. Regardless of the cooling rate applied for solidification of the melt, in the nanocomposites the crystallinity of PA 11 is 5–10 % higher than in neat PA 11, with the highest values obtained for the montmorillonite-containing system. The nucleating effect of the nanofillers onto the crystallization of the PA 11 is confirmed by analysis of the half-times of isothermal crystallization and by analysis of the spherulitic superstructure. All measurements proved a saturation of the nucleation efficiency at a loading of the nanofiller of 2.5 m%.
Starting Page	1143
Ending Page	1151
Page Count	9
File Format	PDF
ISSN	0303402X
Journal	Colloid and Polymer Science
Volume Number	294
Issue Number	7
e-ISSN	14351536
Language	English
Publisher	Springer Berlin Heidelberg
Publisher Date	2016-04-25
Publisher Place	Berlin/Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Polyamide 11 Nanocomposite Crystallization Fast scanning chip calorimetry Polymer Sciences Soft and Granular Matter, Complex Fluids and Microfluidics Characterization and Evaluation of Materials Physical Chemistry Food Science Nanotechnology and Microengineering
Content Type	Text
Resource Type	Article
Subject	Colloid and Surface Chemistry Materials Chemistry Physical and Theoretical Chemistry Polymers and Plastics

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