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Anisotropic and Interconnected Nanoporous Materials from Randomly End-Linked Copolymer Networks

Journal Article · · Macromolecules
 [1];  [2];  [2]
  1. Univ. of Massachusetts, Amherst, MA (United States); University of Massachusetts Amherst
  2. Univ. of Massachusetts, Amherst, MA (United States)
Microphase separation within randomly end-linked copolymer networks (RECNs) provides access to disordered bicontinuous morphologies over a wide composition range of the constituent network strands. Here, we rely on end-linking of telechelic hydroxyl-terminated polystyrene (PS) and poly(D,Llactide) (PLA) chains of equal molecular weight, with a tetrafunctional isocyanate cross-linker in a good solvent for both strands, followed by solvent removal to induce microphase separation, and finally etching of the PLA phase to yield nanoporous materials. Transmission electron microscopy (TEM) tomographic reconstructed 3D images along with gravimetric measurements and small-angle X-ray scattering (SAXS) indicate the formation of highly interconnected structures over a range of ~40-70 vol % of PLA, while N2 adsorption measurements indicate narrowly distributed pore sizes that can be tuned by varying the strand molecular weights. Stretching of the PS/PLA copolymer networks above the glass transition temperatures of both components prior to etching the PLA phase provides a straightforward means to introduce controlled anisotropy into the 3D interconnected porous materials.
Research Organization:
Univ. of Massachusetts, Amherst, MA (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
Grant/Contract Number:
SC0016208
OSTI ID:
1599587
Alternate ID(s):
OSTI ID: 1534761
Journal Information:
Macromolecules, Journal Name: Macromolecules Journal Issue: 12 Vol. 50; ISSN 0024-9297
Publisher:
American Chemical SocietyCopyright Statement
Country of Publication:
United States
Language:
English

References (51)

The Current Status of Interpenetrating Polymer Networks journal April 1996
Bicontinuous Cubic Block Copolymer Photonic Crystals journal December 2002
Fabrication of Co-continuous Nanostructured and Porous Polymer Membranes: Spinodal Decomposition of Homopolymer and Random Copolymer Blends journal March 2012
UCSF Chimera?A visualization system for exploratory research and analysis journal January 2004
Porous Semi-Interpenetrating Hydrogel Networks Based on Dextran and Polyacrylamide With Superfast Responsiveness journal December 2010
Ideal tetrafunctional amphiphilic PEG/PDMS conetworks by a dual-purpose extender/crosslinker. I. Synthesis journal January 2005
Computer Visualization of Three-Dimensional Image Data Using IMOD journal January 1996
Nanoporous Materials from Block Copolymer Precursors book January 2005
Real-Space Studies on Interface in a Phase-Separated Polymer Blend by Laser Scanning Confocal Microscopy book January 1997
Sponge-like structures and their Gaussian curvatures in polymer mixtures and microemulsions journal December 1997
A comprehensive multi-scale analytical modelling framework for predicting the mechanical properties of strand-based composites journal October 2014
BoneJ: Free and extensible bone image analysis in ImageJ journal December 2010
Amphiphilic conetworks: Definition, synthesis, applications journal January 2006
Computing Local Thickness of 3D Structures with ImageJ journal August 2007
Electric-Field-Induced Order–Order Transition from Hexagonally Perforated Lamellae to Lamellae journal August 2015
Dynamically Vulcanized Biobased Polylactide/Natural Rubber Blend Material with Continuous Cross-Linked Rubber Phase journal March 2014
Sol–Gel with Phase Separation. Hierarchically Porous Materials Optimized for High-Performance Liquid Chromatography Separations journal September 2007
Synthetically Simple, Highly Resilient Hydrogels journal February 2012
Novel Amphiphilic Conetworks Composed of Telechelic Poly(ethylene oxide) and Three-Arm Star Polyisobutylene journal February 2004
Hierarchically Porous Materials from Block Copolymers journal September 2013
Preparation and Characterization of Membranes Formed by Nonsolvent Induced Phase Separation: A Review journal April 2011
The Determination of Pore Volume and Area Distributions in Porous Substances. I. Computations from Nitrogen Isotherms journal January 1951
Adsorption of Gases in Multimolecular Layers journal February 1938
Ordered Nanoporous Polymers from Polystyrene−Polylactide Block Copolymers journal October 2002
Nanoporous Materials with Spherical and Gyroid Cavities Created by Quantitative Etching of Polydimethylsiloxane in Polystyrene−Polydimethylsiloxane Block Copolymers journal November 2003
Nanoporous Linear Polyethylene from a Block Polymer Precursor journal June 2010
Hierarchically Porous Polymer Monoliths by Combining Controlled Macro- and Microphase Separation journal July 2015
Synthesis, Characterization, and Structural Investigations of Poly(ethyl acrylate)-l-polyisobutylene Bicomponent Conetwork journal February 2001
Preferential Orientation of Lamellar Microdomains Induced by Uniaxial Stretching of Cross-Linked Polystyrene-block-polybutadiene-block-polystyrene Triblock Copolymer journal April 2001
Mechanism of Thermally Induced Morphological Reorganization and Lamellar Orientation from the Herringbone Structure in Cross-Linked Polystyrene-block-polybutadiene-block-polystyrene Triblock Copolymers journal February 2003
Cross-Linked Nanoporous Materials from Reactive and Multifunctional Block Polymers journal December 2011
Bicontinuous Alkaline Fuel Cell Membranes from Strongly Self-Segregating Block Copolymers journal August 2013
In-Situ Studies of Structure Development during the Reactive Processing of Model Flexible Polyurethane Foam Systems Using FT-IR Spectroscopy, Synchrotron SAXS, and Rheology journal January 1996
Stress-Induced Ordering in Microphase-Separated Multicomponent Networks journal January 1996
Tunable Networks from Thiolene Chemistry for Lithium Ion Conduction journal May 2012
Amphiphilic Network as Nanoreactor for Enzymes in Organic Solvents journal January 2005
Wide Bicontinuous Compositional Windows from Co-Networks Made with Telechelic Macromonomers journal November 2014
Flash freezing route to mesoporous polymer nanofibre networks journal October 2013
NIH Image to ImageJ: 25 years of image analysis journal June 2012
Erratum: Bright-White Beetle Scales Optimise Multiple Scattering of Light journal December 2014
Well-ordered nanohybrids and nanoporous materials from gyroid block copolymer templates journal January 2015
Theory of the Order-Disorder Phase Transition in Cross-Linked Polymer Blends journal November 1995
Effect of cross-links on a mixture of polymers journal January 1979
Small angle scattering of bicontinuous structures in microemulsions journal March 1988
Spinodal decomposition of a symmetric critical mixture of deuterated and protonated polymer journal September 1989
Block Copolymers—Designer Soft Materials journal February 1999
Polymerization-induced phase separation journal August 1999
Anisotropic Thermal Conductivity of Nanoporous Silica Film journal January 2004
Reticulated Nanoporous Polymers by Controlled Polymerization-Induced Microphase Separation journal June 2012
Hierarchical Porous Polymer Scaffolds from Block Copolymers journal August 2013
Ordered Bicontinuous Nanoporous and Nanorelief Ceramic Films from Self Assembling Polymer Precursors journal November 1999

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