Skip to main content
U.S. Department of Energy
Office of Scientific and Technical Information

Nanostructured Thermoset/Thermoset Blends Compatibilized with an Amphiphilic Block Copolymer

Journal Article · · Macromolecules

Blends of thermoset polymers offer an avenue to combine the mechanical properties of complementary high glass transition temperature systems. An epoxy resin with high tensile strength and modulus, composed of the diglycidyl ether of bisphenol A cured with an anhydride, was combined with polydicyclopentadiene, cured via ring-opening metathesis polymerization, to improve the toughness. An amphiphilic block copolymer, poly(1,4-butadiene-b-ethylene oxide), where 1,4-polybutadiene has a strong affinity for polydicyclopentadiene and poly(ethylene oxide) has a strong affinity for the epoxy resin, was added to control phase separation and manipulate the morphology of the thermoset blend, analogous to compatibilization in thermoplastic blends. A systematic study of the influence of block copolymer loading and blend composition on the structural morphology was performed, using a combination of ultrasmall-angle X-ray scattering (USAXS), small-angle X-ray scattering (SAXS), and transmission electron microscopy (TEM). As the block copolymer content was increased, the thermoset/thermoset blend morphology transitioned from a phase-separated surface fractal type morphology to finer dispersed spherical domains, until a critical particle size was reached at which blend mechanical properties were optimum. The resultant mechanical properties for select compatibilized blends showed a strong positive influence of the morphology on the fracture properties while maintaining the well-behaved tensile properties observed in the uncompatibilized system.

Research Organization:
Argonne National Laboratory (ANL), Argonne, IL (United States)
Sponsoring Organization:
National Science Foundation (NSF); USDOE Office of Science (SC)
Grant/Contract Number:
AC02-06CH11357
OSTI ID:
1531174
Journal Information:
Macromolecules, Journal Name: Macromolecules Journal Issue: 8 Vol. 52; ISSN 0024-9297
Publisher:
American Chemical SocietyCopyright Statement
Country of Publication:
United States
Language:
English

References (67)

A generalized criterion for rubber toughening: The critical matrix ligament thickness journal February 1988
Effect of nanosized carbon black on the morphology, transport, and mechanical properties of rubbery epoxy and silicone composites journal April 2012
Emulsifying effects of block copolymers in incompatible polymer blends journal March 1988
Effects of particle size and rubber content on fracture toughness in rubber-modified epoxies journal March 1996
Effect of rubber particle size on deformation mechanisms in glassy epoxy journal January 1973
Processing-morphology relationships of compatibilized polyolefin/polyamide blends. Part I: The effect of an lonomer compatibilizer on blend morphology journal November 1988
Micellar structure and mechanical properties of block copolymer-modified epoxies journal January 2001
Mechanical properties of block copolymer vesicle and micelle modified epoxies journal September 2003
Structure and properties of PBO-PEO diblock copolymer modified epoxy journal January 2005
Carbon nanotube/epoxy resin composites using a block copolymer as a dispersing agent journal October 2004
Fracture and Fatigue in Graphene Nanocomposites journal January 2010
The Road for Nanomaterials Industry: A Review of Carbon Nanotube Production, Post-Treatment, and Bulk Applications for Composites and Energy Storage journal April 2013
Chain Dimensions and Entanglement Spacings book January 2007
Dilatational bands in rubber-toughened polymers journal December 1993
Determination of critical molecular weight for entangled macromolecules using the tensile strength data journal January 1995
Influence of particle size and particle size distribution on toughening mechanisms in rubber-modified epoxies journal July 1991
Rubber toughening of plastics: Part 11 Effects of rubber particle size and structure on yield behaviour of HIPS journal April 1987
Brittle-ductile transition of polymer blends journal October 1995
Tethered chains in polymer microstructures book January 2006
Dynamics of strongly entangled polymer systems: activated reptation journal January 1998
Effect of acid and TETA modification on mechanical properties of MWCNTs/epoxy composites journal February 2008
Ultra-Small-Angle X-ray Scattering Instrument at the Advanced Photon Source: History, Recent Development, and Current Status journal October 2012
Phase structure and adhesion in polymer blends: A criterion for rubber toughening journal November 1985
Interfacial behaviour of compatibilizers in polymer blends journal January 1994
Toughening of a trifunctional epoxy system journal April 2001
Effect of morphology on the brittle ductile transition of polymer blends: 1. A new equation for correlating morphological parameters journal October 1997
Brittle-tough transition in PP/EPDM blends: effects of interparticle distance and temperature journal June 1998
Use of block copolymers to control the morphologies and properties of thermoplastic/thermoset blends journal March 1999
Role of particle cavitation in rubber-toughened epoxies: II. Inter-particle distance journal January 2000
Strain rate effect on toughening of nano-sized PEP–PEO block copolymer modified epoxy journal May 2009
Effects of surfactant treatment on mechanical and electrical properties of CNT/epoxy nanocomposites journal December 2008
Improvements in mechanical properties of a carbon fiber epoxy composite using nanotube science and technology journal October 2010
Improvements in mechanical and thermo-mechanical properties of e-glass/epoxy composites using amino functionalized MWCNTs journal July 2012
Carbon black reinforced C8 ether linked bismaleimide toughened electrically conducting epoxy nanocomposites journal December 2014
Micro- or nanoseparated phases in thermoset blends of an epoxy resin and PEO–PPO–PEO triblock copolymer journal August 2005
Epoxy resin containing poly(ethylene oxide)-block-poly(ɛ-caprolactone) diblock copolymer: Effect of curing agents on nanostructures journal October 2006
Cure behavior of epoxy/MWCNT nanocomposites: The effect of nanotube surface modification journal July 2008
Notched impact behavior of polymer blends: Part 1: New model for particle size dependence journal November 2009
Concurrent curing kinetics of an anhydride-cured epoxy resin and polydicyclopentadiene journal July 2015
Living ring-opening metathesis polymerization journal January 2007
Wind turbine blade waste in 2050 journal April 2017
Thermoset Blends of an Epoxy Resin and Polydicyclopentadiene journal November 2016
Self-Assembly and Polymerization of Epoxy Resin-Amphiphilic Block Copolymer Nanocomposites journal March 1997
Nanostructured Thermosets from Self-Assembled Amphiphilic Block Copolymer/Epoxy Resin Mixtures journal September 1998
Phase Behavior of Block Copolymer/Homopolymer Blends journal August 1995
Effect of block copolymers at a demixed homopolymer interface journal August 1984
Polymeric micelles: a star model journal November 1987
Compatibilizing effect of block copolymers added to the polymer/polymer interface journal March 1989
Phase Behavior, Crystallization, and Hierarchical Nanostructures in Self-Organized Thermoset Blends of Epoxy Resin and Amphiphilic Poly(ethylene oxide)- b lock -poly(propylene oxide)- b lock -poly(ethylene oxide) Triblock Copolymers journal April 2002
Phase Behavior of Highly Immiscible Polymer Blends Stabilized by a Balanced Block Copolymer Surfactant journal August 2003
Epoxy Toughening Using Low Molecular Weight Poly(hexylene oxide)−Poly(ethylene oxide) Diblock Copolymers journal September 2006
A Model for Toughening of Semicrystalline Polymers journal June 2007
Impressive Fatigue Life and Fracture Toughness Improvements in Graphene Oxide/Epoxy Composites journal December 2011
Nanocavitation in Self-Assembled Amphiphilic Block Copolymer-Modified Epoxy journal September 2008
Toughening of Epoxies with Block Copolymer Micelles of Wormlike Morphology journal August 2010
Persistence Length of Isotactic Poly(hydroxy butyrate) journal July 1997
Block copolymers in tomorrow's plastics journal January 2005
Rubber-Toughened Epoxies: A Critical Review journal August 2009
Analysis of Classical Statistical Mechanics by Means of Collective Coordinates journal April 1958
Polymeric Bicontinuous Microemulsions journal August 1997
Irena : tool suite for modeling and analysis of small-angle scattering journal February 2009
Ultra-small-angle X-ray scattering at the Advanced Photon Source journal April 2009
High-resolution small-angle X-ray scattering camera for anomalous scattering journal February 1991
Approximations Leading to a Unified Exponential/Power-Law Approach to Small-Angle Scattering journal December 1995
Small-Angle Scattering from Polymeric Mass Fractals of Arbitrary Mass-Fractal Dimension journal April 1996
Materials Challenges in Present and Future Wind Energy journal April 2008
A review on the development and properties of continuous fiber/epoxy/aluminum hybrid composites for aircraft structures journal September 2006

Cited By (1)

Viscosity and viscoelasticity of liquid nanoparticles with polymeric matrix journal August 2019

Similar Records

Thermoset Blends of an Epoxy Resin and Polydicyclopentadiene
Journal Article · Tue Nov 29 23:00:00 EST 2016 · Macromolecules · OSTI ID:1337189

Radical-cured block copolymer-modified thermosets
Journal Article · Wed Jan 09 23:00:00 EST 2013 · J. Polym. Sci. Pol. Lett. · OSTI ID:1049563

Morphology development of rubber-modified epoxy thermosets
Conference · Mon Dec 30 23:00:00 EST 1996 · OSTI ID:441492