Blends of polyamide-6 with acrylic core-shell impact modifiers

AbstractPolyamide-6 (PA6)/montmorillonite (MMT) nanocomposites were prepared via melt compounding. Maleated acrylonitrile-butadiene-styrene (ABS-g- MA) core-shell structural rubber particles were first introduced to toughen PA6/MMT nanocomposites. Before melt intercalation, MMT was treated with an organic surfactant agent. XRD and TEM results showed that MMT platelets were completely exfoliated in the PA6 matrix. And when the core-shell rubber particles were introduced into the nanocomposites, they were well dispersed in the matrix. Tensile and impact tests showed that a small amount of MMT could increase the yield strength but sacrifice the toughness. However when core-shell rubber particles were added into the nanocomposites, the tensile ductility and impact strength improved greatly. It was reasonable to say that the addition of core-shell particles could make the balance of the stiffness and toughness of nanocomposites.

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

Polymer Engineering & Science ◽

10.1002/pen.23718 ◽

2013 ◽

Vol 53 (12) ◽

pp. 2705-2710 ◽

Cited By ~ 10

Author(s):

Dongguang Yan ◽

Guang Li ◽

Mingyue Huang ◽

Chao Wang

Keyword(s):

Anionic Polymerization ◽

Reactive Extrusion ◽

Polyamide 6 ◽

Core Shell

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Preparation of Core/Shell Composite Latex Particles and Toughening Modification for Polyamide 6

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.79-82.2103 ◽

2009 ◽

Vol 79-82 ◽

pp. 2103-2106

Author(s):

Xi Jun Liu ◽

Hai Ping Li ◽

Feng Li ◽

Rui Xia Tian ◽

Qing Li

Keyword(s):

Shell Structure ◽

Polyamide 6 ◽

Core Shell ◽

Melt Blending ◽

Seeded Emulsion Polymerization ◽

Latex Particles ◽

The Core ◽

Core Shell Structure ◽

Average Size ◽

Shell Composite

In this paper, a novel poly(butyl methacry1ate)/poly(methyl methacrylate-itaconic acid)(PBA/P(MMA-ITA)) latex particles with core/shell structure (CSR) was synthesized by the method of pre-emulsion semi-continuous seeded emulsion polymerization. The core/shell structure of CSR was characterized by TEM and confirmed that the average size of CSR particles was about 330 nm and that of PBA core was about 290 nm. The polyamide 6 (PA 6)/CSR blends (N/CSR) were prepared by the melt-blending technique, and its impact strength reached 40kJ•m-2 (more than 7 times higher than neat PA 6) when the ITA dosage was in the range of 4%~10%. The results of SEM showed that the high toughness of N/CSR blends was the result of the shear deformation of PA 6 matrix induced by cavitation of dispersed phase CSR.

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