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The location and extent of exfoliation of clay on the fracture mechanisms in nylon 66-based ternary nanocomposites.
J Nanosci Nanotechnol. 2008 Apr; 8(4):1901-12.JN

Abstract

The primary focus of this work is to elucidate the location and extent of exfoliation of clay on fracture (under both static and dynamic loading conditions) of melt-compounded nylon 66/clay/SEBS-g-MA ternary nanocomposites fabricated by different blending sequences. Distinct microstructures are obtained depending on the blending protocol employed. The state of exfoliation and dispersion of clay in nylon 66 matrix and SEBS-g-MA phase are quantified and the presence of clay in rubber is shown to have a negative effect on the toughness of the nanocomposites. The level of toughness enhancement of ternary nanocomposites depends on the blending protocol and the capability of different fillers to activate the plastic deformation mechanisms in the matrix. These mechanisms include: cavitation of SEBS-g-MA phase, stretching of voided matrix material, interfacial debonding of SEBS-g-MA particles, debonding of intercalated clay embedded inside the SEBS-g-MA phase, and delamination of intercalated clay platelets. Based on these results, new insights and approaches for the processing of better toughened polymer ternary nanocomposites are discussed.

Authors+Show Affiliations

Dasari A
Centre for Advanced Materials Technology (CAMT), School of Aerospace, Mechanical and Mechatronic Engineering (J07), The University of Sydney, Sydney, NSW 2006, Australia.
Yu ZZ
No affiliation info available
Mai YW
No affiliation info available
Yang M
No affiliation info available

MeSH

Aluminum SilicatesClayCrystallizationElasticityHardnessMacromolecular SubstancesMaterials TestingMolecular ConformationNanostructuresNanotechnologyNylonsParticle SizeStress, MechanicalSurface Properties

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

18572592

Citation

Dasari, Aravind, et al. "The Location and Extent of Exfoliation of Clay On the Fracture Mechanisms in Nylon 66-based Ternary Nanocomposites." Journal of Nanoscience and Nanotechnology, vol. 8, no. 4, 2008, pp. 1901-12.
Dasari A, Yu ZZ, Mai YW, et al. The location and extent of exfoliation of clay on the fracture mechanisms in nylon 66-based ternary nanocomposites. J Nanosci Nanotechnol. 2008;8(4):1901-12.
Dasari, A., Yu, Z. Z., Mai, Y. W., & Yang, M. (2008). The location and extent of exfoliation of clay on the fracture mechanisms in nylon 66-based ternary nanocomposites. Journal of Nanoscience and Nanotechnology, 8(4), 1901-12.
Dasari A, et al. The Location and Extent of Exfoliation of Clay On the Fracture Mechanisms in Nylon 66-based Ternary Nanocomposites. J Nanosci Nanotechnol. 2008;8(4):1901-12. PubMed PMID: 18572592.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - The location and extent of exfoliation of clay on the fracture mechanisms in nylon 66-based ternary nanocomposites. AU - Dasari,Aravind, AU - Yu,Zhong-Zhen, AU - Mai,Yiu-Wing, AU - Yang,Mingshu, PY - 2008/6/25/pubmed PY - 2008/7/23/medline PY - 2008/6/25/entrez SP - 1901 EP - 12 JF - Journal of nanoscience and nanotechnology JO - J Nanosci Nanotechnol VL - 8 IS - 4 N2 - The primary focus of this work is to elucidate the location and extent of exfoliation of clay on fracture (under both static and dynamic loading conditions) of melt-compounded nylon 66/clay/SEBS-g-MA ternary nanocomposites fabricated by different blending sequences. Distinct microstructures are obtained depending on the blending protocol employed. The state of exfoliation and dispersion of clay in nylon 66 matrix and SEBS-g-MA phase are quantified and the presence of clay in rubber is shown to have a negative effect on the toughness of the nanocomposites. The level of toughness enhancement of ternary nanocomposites depends on the blending protocol and the capability of different fillers to activate the plastic deformation mechanisms in the matrix. These mechanisms include: cavitation of SEBS-g-MA phase, stretching of voided matrix material, interfacial debonding of SEBS-g-MA particles, debonding of intercalated clay embedded inside the SEBS-g-MA phase, and delamination of intercalated clay platelets. Based on these results, new insights and approaches for the processing of better toughened polymer ternary nanocomposites are discussed. SN - 1533-4880 UR - https://www.unboundmedicine.com/medline/citation/18572592/The_location_and_extent_of_exfoliation_of_clay_on_the_fracture_mechanisms_in_nylon_66_based_ternary_nanocomposites_ DB - PRIME DP - Unbound Medicine ER -