Tough polyamide 6/core-shell blends prepared via in situ anionic polymerization of ζ-caprolactam by reactive extrusion

In this study, the molten caprolactam (CL) solution of maleated styrene-ethylene/butylene-styrene block copolymer (SEBS-g-MA) and polystyrene (PS) containing catalyst and activator were introduced into a twin screw extruder, and polyamide 6 (PA6)/SEBS/PS blends were successfully prepared via anionic...

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Bibliographic Details
Published in:Polymer engineering and science 2013-12, Vol.53 (12), p.2705
Main Authors: Yan, Dongguang, Li, Guang, Huang, Mingyue, Wang, Chao
Format: Article
Language:English
Subjects:
Clothing industry
Mechanical properties
Olefins
Polyamides
Polymerization
Surface active agents
Online Access:Get full text
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Summary:In this study, the molten caprolactam (CL) solution of maleated styrene-ethylene/butylene-styrene block copolymer (SEBS-g-MA) and polystyrene (PS) containing catalyst and activator were introduced into a twin screw extruder, and polyamide 6 (PA6)/SEBS/PS blends were successfully prepared via anionic polymerization of CL by reactive extrusion. The mechanical properties measurements indicated that both the elongation at break and notched Izod impact strength of PA6/SEBS/PS (85/10/5) blends were improved distinctly with slight loss of tensile and flexural strength as compared to that of pure PA6. The images of transmission electron microscopy showed that a core-shell structure with PS core and poly (ethene-co-1-butene) (PEB) shell was formed within the PA6 matrix. Fourier transform infrared was used to investigate the formation mechanisms of the core-shell structure. POLYM. ENG. SCI., 53:2705-2710, 2013. © 2013 Society of Plastics Engineers
ISSN:0032-3888
1548-2634
DOI:10.1002/pen.23718