List of works - John M. Torkelson

Arresting Elevated-Temperature Creep and Achieving Full Cross-Link Density Recovery in Reprocessable Polymer Networks and Network Composites via Nitroxide-Mediated Dynamic Chemistry

scientific article

Behavior of gradient copolymers at liquid/liquid interfaces

scientific article published in March 2010

Biobased Reprocessable Polyhydroxyurethane Networks: Full Recovery of Crosslink Density with Three Concurrent Dynamic Chemistries

scientific article

Breadth of glass transition temperature in styrene/acrylic acid block, random, and gradient copolymers: Unusual sequence distribution effects

Comparison of Critical Micelle Concentrations of Gradient Copolymer and Block Copolymer in Homopolymer: Novel Characterization by Intrinsic Fluorescence

article

Covalent Adaptive Networks for Enhanced Adhesion: Exploiting Disulfide Dynamic Chemistry and Annealing during Application

scientific article

Crumpled graphene nanosheets as highly effective barrier property enhancers

scientific article published on 01 November 2010

Determining order-to-disorder transitions in block copolymer thin films using a self-referencing fluorescent probe

scientific article

Dielectric Relaxation Spectroscopy of Gradient Copolymers and Block Copolymers: Comparison of Breadths in Relaxation Time for Systems with Increasing Interphase

Differences in enthalpy recovery of gradient and random copolymers of similar overall composition: styrene/4-methylstyrene copolymers made by nitroxide-mediated controlled radical polymerization

article

Diffusion-Controlled Polymer−Polymer Reactions in Bulk: Novel Strategy for Model Experiments and Reactive Compatibilization Using Polymers Synthesized via Controlled Radical Polymerization

Distribution of Glass Transition Temperatures in Free-Standing, Nanoconfined Polystyrene Films: A Test of de Gennes Sliding Motion Mechanism

scientific article from 2011

Dramatic reduction of the effect of nanoconfinement on the glass transition of polymer films via addition of small-molecule diluent

scientific article published on 5 March 2004

Dynamic Covalent Polyurethane Networks with Excellent Property and Cross-Link Density Recovery after Recycling and Potential for Monomer Recovery

scientific article

Effect of Gradient Sequencing on Copolymer Order–Disorder Transitions: Phase Behavior of Styrene/n-Butyl Acrylate Block and Gradient Copolymers

Effect of spatial confinement on the glass-transition temperature of patterned polymer nanostructures

scientific article published on 9 February 2007

Engineering Surface Hydrophilicity via Polymer Chain-End Segregation in Coatings Formed by Photopolymerization

scientific article

Enhancement of Surface Wettability by Incorporating Polar Initiator Fragments at Chain Ends of Low-Molecular-Weight Polymers

scientific article published on 30 March 2017

Fluorescence nonradiative energy transfer in bulk polymer and miscible and phase-separated polymer blends: A quantitative analysis including correlation effects

Fragility is a Key Parameter in Determining the Magnitude of Tg-Confinement Effects in Polymer Films

scientific article from 2013

Functionalization of hydroxyl groups in segmented polyhydroxyurethane eliminates nanophase separation

scientific article

Glass Transition Breadths and Composition Profiles of Weakly, Moderately, and Strongly Segregating Gradient Copolymers: Experimental Results and Calculations from Self-Consistent Mean-Field Theory

article

Glass transition and alpha -relaxation dynamics of thin films of labeled polystyrene

scientific article published on 29 June 2007

Gradient copolymers with broad glass transition temperature regions: Design of purely interphase compositions for damping applications

article

Heterogeneous Charged Complexes of Random Copolymers for the Segregation of Organic Molecules

scientific article published on 26 May 2021

Identification of Known and Novel Monomers for Poly(hydroxyurethanes) from Biobased Materials

scientific article

Imaging of phase segregation in gradient copolymers: Island and hole surface topography

Impact of bottlebrush chain architecture on T g ‐confinement and fragility‐confinement effects enabled by thermo‐cleavable bottlebrush polymers synthesized by radical coupling and atom transfer radical polymerization

scientific article

Limitations in the Synthesis of High Molecular Weight Polymers via Nitroxide-Mediated Controlled Radical Polymerization: Experimental Studies

Limitations in the Synthesis of High Molecular Weight Polymers via Nitroxide-Mediated Controlled Radical Polymerization: Modeling Studies

Microphase Separation and Shear Alignment of Gradient Copolymers: Melt Rheology and Small-Angle X-Ray Scattering Analysis

article

Miscibility and phase separation in poly(methyl methacrylate)/poly(vinyl chloride) blends: study of thermodynamics by thermal analysis

article

Model polymer nanocomposites provide an understanding of confinement effects in real nanocomposites

scientific article published on 18 March 2007

Modulus, confinement, and temperature effects on surface capillary wave dynamics in bilayer polymer films near the glass transition

scientific article published on 17 July 2012

Molecular Weight Dependence of the Glass Transition Temperature (Tg)-Confinement Effect in Well-Dispersed Poly(2-vinyl pyridine)–Silica Nanocomposites: Comparison of Interfacial Layer Tg and Matrix Tg

scientific article

Molecular weight dependence of the intrinsic size effect on Tg in AAO template-supported polymer nanorods: A DSC study.

scientific article published in May 2017

Phase separation of oligomeric polystyrene-polybutadiene blends as studied by excimer fluorescence

article published in 1988

Physical Aging of Ultrathin Polymer Films above and below the Bulk Glass Transition Temperature: Effects of Attractive vs Neutral Polymer−Substrate Interactions Measured by Fluorescence

scientific article

Polymer Blend Compatibilization by Gradient Copolymer Addition during Melt Processing: Stabilization of Dispersed Phase to Static Coarsening

article

Recyclable Crosslinked Polymer Networks via One-Step Controlled Radical Polymerization

scientific article published on 20 May 2016

Recyclable Polymethacrylate Networks Containing Dynamic Dialkylamino Disulfide Linkages and Exhibiting Full Property Recovery

scientific article

Reprocessable Polyhydroxyurethane Network Composites: Effect of Filler Surface Functionality on Cross-link Density Recovery and Stress Relaxation

scientific article published on 04 January 2019

Reprocessable Polymer Networks Designed with Hydroxyurethane Dynamic Cross‐links: Effect of Backbone Structure on Network Morphology, Phase Segregation, and Property Recovery

scientific article

Reprocessable Polymer Networks via Thiourethane Dynamic Chemistry: Recovery of Cross-link Density after Recycling and Proof-of-Principle Solvolysis Leading to Monomer Recovery

scientific article

Reprocessable covalent adaptable networks with excellent elevated-temperature creep resistance: facilitation by dynamic, dissociative bis(hindered amino) disulfide bonds

scientific article

Reprocessable polyhydroxyurethane networks exhibiting full property recovery and concurrent associative and dissociative dynamic chemistry via transcarbamoylation and reversible cyclic carbonate aminolysis

scientific article

Segmented Thermoplastic Polymers Synthesized by Thiol–Ene Click Chemistry: Examples of Thiol–Norbornene and Thiol–Maleimide Click Reactions

Stiffness Gradients in Glassy Polymer Model Nanocomposites: Comparisons of Quantitative Characterization by Fluorescence Spectroscopy and Atomic Force Microscopy

scientific article

Streamlined ellipsometry procedure for characterizing physical aging rates of thin polymer films

scientific article

Structural relaxation of polymer glasses at surfaces, interfaces, and in between

scientific article

Synthesis and application of styrene/4-hydroxystyrene gradient copolymers made by controlled radical polymerization: Compatibilization of immiscible polymer blends via hydrogen-bonding effects

article

Tenfold increase in the photostability of an azobenzene guest in vapor-deposited glass mixtures

scientific article published on 01 November 2018

The distribution of glass-transition temperatures in nanoscopically confined glass formers ⬇️

scientific article published on September 21, 2003

Uniquely Broad Glass Transition Temperatures of Gradient Copolymers Relative to Random and Block Copolymers Containing Repulsive Comonomers

article

List of works by John M. Torkelson

Arresting Elevated-Temperature Creep and Achieving Full Cross-Link Density Recovery in Reprocessable Polymer Networks and Network Composites via Nitroxide-Mediated Dynamic Chemistry

Behavior of gradient copolymers at liquid/liquid interfaces

Biobased Reprocessable Polyhydroxyurethane Networks: Full Recovery of Crosslink Density with Three Concurrent Dynamic Chemistries

Breadth of glass transition temperature in styrene/acrylic acid block, random, and gradient copolymers: Unusual sequence distribution effects

Comparison of Critical Micelle Concentrations of Gradient Copolymer and Block Copolymer in Homopolymer: Novel Characterization by Intrinsic Fluorescence

Covalent Adaptive Networks for Enhanced Adhesion: Exploiting Disulfide Dynamic Chemistry and Annealing during Application

Crumpled graphene nanosheets as highly effective barrier property enhancers

Determining order-to-disorder transitions in block copolymer thin films using a self-referencing fluorescent probe

Dielectric Relaxation Spectroscopy of Gradient Copolymers and Block Copolymers: Comparison of Breadths in Relaxation Time for Systems with Increasing Interphase

Differences in enthalpy recovery of gradient and random copolymers of similar overall composition: styrene/4-methylstyrene copolymers made by nitroxide-mediated controlled radical polymerization

Diffusion-Controlled Polymer−Polymer Reactions in Bulk: Novel Strategy for Model Experiments and Reactive Compatibilization Using Polymers Synthesized via Controlled Radical Polymerization

Distribution of Glass Transition Temperatures in Free-Standing, Nanoconfined Polystyrene Films: A Test of de Gennes Sliding Motion Mechanism

Dramatic reduction of the effect of nanoconfinement on the glass transition of polymer films via addition of small-molecule diluent

Dynamic Covalent Polyurethane Networks with Excellent Property and Cross-Link Density Recovery after Recycling and Potential for Monomer Recovery

Effect of Gradient Sequencing on Copolymer Order–Disorder Transitions: Phase Behavior of Styrene/n-Butyl Acrylate Block and Gradient Copolymers

Effect of spatial confinement on the glass-transition temperature of patterned polymer nanostructures

Engineering Surface Hydrophilicity via Polymer Chain-End Segregation in Coatings Formed by Photopolymerization

Enhancement of Surface Wettability by Incorporating Polar Initiator Fragments at Chain Ends of Low-Molecular-Weight Polymers

Fluorescence nonradiative energy transfer in bulk polymer and miscible and phase-separated polymer blends: A quantitative analysis including correlation effects

Fragility is a Key Parameter in Determining the Magnitude of Tg-Confinement Effects in Polymer Films

Functionalization of hydroxyl groups in segmented polyhydroxyurethane eliminates nanophase separation

Glass Transition Breadths and Composition Profiles of Weakly, Moderately, and Strongly Segregating Gradient Copolymers: Experimental Results and Calculations from Self-Consistent Mean-Field Theory

Glass transition and alpha -relaxation dynamics of thin films of labeled polystyrene

Gradient copolymers with broad glass transition temperature regions: Design of purely interphase compositions for damping applications

Heterogeneous Charged Complexes of Random Copolymers for the Segregation of Organic Molecules

Identification of Known and Novel Monomers for Poly(hydroxyurethanes) from Biobased Materials

Imaging of phase segregation in gradient copolymers: Island and hole surface topography

Impact of bottlebrush chain architecture on T g ‐confinement and fragility‐confinement effects enabled by thermo‐cleavable bottlebrush polymers synthesized by radical coupling and atom transfer radical polymerization

Limitations in the Synthesis of High Molecular Weight Polymers via Nitroxide-Mediated Controlled Radical Polymerization: Experimental Studies

Limitations in the Synthesis of High Molecular Weight Polymers via Nitroxide-Mediated Controlled Radical Polymerization: Modeling Studies

Microphase Separation and Shear Alignment of Gradient Copolymers: Melt Rheology and Small-Angle X-Ray Scattering Analysis

Miscibility and phase separation in poly(methyl methacrylate)/poly(vinyl chloride) blends: study of thermodynamics by thermal analysis

Model polymer nanocomposites provide an understanding of confinement effects in real nanocomposites

Modulus, confinement, and temperature effects on surface capillary wave dynamics in bilayer polymer films near the glass transition

Molecular Weight Dependence of the Glass Transition Temperature (Tg)-Confinement Effect in Well-Dispersed Poly(2-vinyl pyridine)–Silica Nanocomposites: Comparison of Interfacial Layer Tg and Matrix Tg

Molecular weight dependence of the intrinsic size effect on Tg in AAO template-supported polymer nanorods: A DSC study.

Phase separation of oligomeric polystyrene-polybutadiene blends as studied by excimer fluorescence

Physical Aging of Ultrathin Polymer Films above and below the Bulk Glass Transition Temperature: Effects of Attractive vs Neutral Polymer−Substrate Interactions Measured by Fluorescence

Polymer Blend Compatibilization by Gradient Copolymer Addition during Melt Processing: Stabilization of Dispersed Phase to Static Coarsening

Recyclable Crosslinked Polymer Networks via One-Step Controlled Radical Polymerization

Recyclable Polymethacrylate Networks Containing Dynamic Dialkylamino Disulfide Linkages and Exhibiting Full Property Recovery

Reprocessable Polyhydroxyurethane Network Composites: Effect of Filler Surface Functionality on Cross-link Density Recovery and Stress Relaxation

Reprocessable Polymer Networks Designed with Hydroxyurethane Dynamic Cross‐links: Effect of Backbone Structure on Network Morphology, Phase Segregation, and Property Recovery

Reprocessable Polymer Networks via Thiourethane Dynamic Chemistry: Recovery of Cross-link Density after Recycling and Proof-of-Principle Solvolysis Leading to Monomer Recovery

Reprocessable covalent adaptable networks with excellent elevated-temperature creep resistance: facilitation by dynamic, dissociative bis(hindered amino) disulfide bonds

Reprocessable polyhydroxyurethane networks exhibiting full property recovery and concurrent associative and dissociative dynamic chemistry via transcarbamoylation and reversible cyclic carbonate aminolysis

Segmented Thermoplastic Polymers Synthesized by Thiol–Ene Click Chemistry: Examples of Thiol–Norbornene and Thiol–Maleimide Click Reactions

Stiffness Gradients in Glassy Polymer Model Nanocomposites: Comparisons of Quantitative Characterization by Fluorescence Spectroscopy and Atomic Force Microscopy

Streamlined ellipsometry procedure for characterizing physical aging rates of thin polymer films

Structural relaxation of polymer glasses at surfaces, interfaces, and in between

Synthesis and application of styrene/4-hydroxystyrene gradient copolymers made by controlled radical polymerization: Compatibilization of immiscible polymer blends via hydrogen-bonding effects

Tenfold increase in the photostability of an azobenzene guest in vapor-deposited glass mixtures

The distribution of glass-transition temperatures in nanoscopically confined glass formers ⬇️

Uniquely Broad Glass Transition Temperatures of Gradient Copolymers Relative to Random and Block Copolymers Containing Repulsive Comonomers

Vitrimers Designed Both To Strongly Suppress Creep and To Recover Original Cross-Link Density after Reprocessing: Quantitative Theory and Experiments