Latest Articles of Macromolecules


Tunable Blocking Agents for Temperature-Controlled Triazolinedione-Based Cross-Linking Reactions 10.1021/acs.macromol.7b02526 2018-04-11 The remarkable reactivity of triazolinediones (TADs) toward olefin-type substrates marks them as highly attractive click reagents, in particular for polymer modification and cross-linking. Critically, their ultrafast reaction rates result in handling issues a...
Electrostatic and Hydrophobic Interactions in NaCMC Aqueous Solutions: Effect of Degree of Substitution 10.1021/acs.macromol.8b00178 2018-04-11 The rheology of water-soluble polyelectrolytes at intermediate and high concentrations is controlled by entanglement, hydrophobic, and electrostatic interactions, whose influences are difficult to isolate. We investigate the rheology of semidilute solutions o...
Thermodynamic Interactions in a Model Polydiene/Polyolefin Blend Based on 1,2-Polybutadiene 10.1021/acs.macromol.7b02181 2018-04-10 Thermodynamic interactions in polydiene/polyolefin blends composed of 1,2-polybutadiene (1,2-PBD) and fully saturated (with deuterium) 1,2-PBD were explored with small-angle neutron scattering (SANS). Two methods were employed to extract the temperature depen...
Structural Elucidation of Amorphous Photocatalytic Polymers from Dynamic Nuclear Polarization Enhanced Solid State NMR 10.1021/acs.macromol.7b02544 2018-04-10 Dynamic nuclear polarization (DNP) solid-state nuclear magnetic resonance (NMR) offers a recent approach to dramatically enhance NMR signals and has enabled detailed structural information to be obtained in a series of amorphous photocatalytic copolymers of a...
Structure of the Crystalline Core of Fiber-like Polythiophene Block Copolymer Micelles 10.1021/acs.macromol.7b02552 2018-04-10 The internal structure and cross-sectional geometry of fiber-like poly(3-hexylthiophene)-based block copolymer micelles has been determined using small- and wide-angle X-ray scattering (SAXS and WAXS, respectively) techniques alongside electron and atomic for...
Nanorods with Different Surface Properties in Directing the Compatibilization Behavior and the Morphological Transition of Immiscible Polymer Blends in Both Shear and Shear-Free Conditions 10.1021/acs.macromol.7b02624 2018-04-10 To explore the mechanism of how the nanorod surface properties regulate the compatibilization behavior and the morphology transition in demixing polymer blends, we perform dissipative particle dynamics simulations and study the impact of three typical nanorod...
Fracture Process of Double-Network Gels by Coarse-Grained Molecular Dynamics Simulation 10.1021/acs.macromol.8b00124 2018-04-10 Double-network (DN) gels consisting of highly and slightly cross-linked networks exhibit good mechanical properties, complicated deformation behavior, and fracture processes owing to the existence of a large number of influential parameters. To determine the ...
Interpreting Neutron Reflectivity Profiles of Diblock Copolymer Nanocomposite Thin Films Using Hybrid Particle-Field Simulations 10.1021/acs.macromol.8b00180 2018-04-10 Mixtures of block copolymers and nanoparticles (block copolymer nanocomposites) are known to microphase separate into a plethora of microstructures, depending on the composition, length scale, and nature of interactions among its different constituents. Confi...
Highly Active Organic Lewis Pairs for the Copolymerization of Epoxides with Cyclic Anhydrides: Metal-Free Access to Well-Defined Aliphatic Polyesters 10.1021/acs.macromol.8b00499 2018-04-10 Polyester synthesis from the alternating copolymerization of epoxides with cyclic anhydrides via a metal-free route remains a key challenge. This work reports the development of a highly active organocatalytic route for the copolymerization of a spectrum of e...
Capillary Imbibition of Polymer Mixtures in Nanopores 10.1021/acs.macromol.7b02724 2018-04-09 Capillary imbibition of homogeneous mixtures of entangled poly(ethylene oxide) melts in nanopores of self-ordered nanoporous alumina follows a t1/2 dependence but contradicts the classical Lucas–Washburn equation. Herein we employ reflection microscopy and se...

Tunable Blocking Agents for Temperature-Controlled Triazolinedione-Based Cross-Linking Reactions

10.1021/acs.macromol.7b02526

2018-04-11

The remarkable reactivity of triazolinediones (TADs) toward olefin-type substrates marks them as highly attractive click reagents, in particular for polymer modification and cross-linking. Critically, their ultrafast reaction rates result in handling issues a...

Electrostatic and Hydrophobic Interactions in NaCMC Aqueous Solutions: Effect of Degree of Substitution

10.1021/acs.macromol.8b00178

2018-04-11

The rheology of water-soluble polyelectrolytes at intermediate and high concentrations is controlled by entanglement, hydrophobic, and electrostatic interactions, whose influences are difficult to isolate. We investigate the rheology of semidilute solutions o...

Thermodynamic Interactions in a Model Polydiene/Polyolefin Blend Based on 1,2-Polybutadiene

10.1021/acs.macromol.7b02181

2018-04-10

Thermodynamic interactions in polydiene/polyolefin blends composed of 1,2-polybutadiene (1,2-PBD) and fully saturated (with deuterium) 1,2-PBD were explored with small-angle neutron scattering (SANS). Two methods were employed to extract the temperature depen...

Structural Elucidation of Amorphous Photocatalytic Polymers from Dynamic Nuclear Polarization Enhanced Solid State NMR

10.1021/acs.macromol.7b02544

2018-04-10

Dynamic nuclear polarization (DNP) solid-state nuclear magnetic resonance (NMR) offers a recent approach to dramatically enhance NMR signals and has enabled detailed structural information to be obtained in a series of amorphous photocatalytic copolymers of a...

Structure of the Crystalline Core of Fiber-like Polythiophene Block Copolymer Micelles

10.1021/acs.macromol.7b02552

2018-04-10

The internal structure and cross-sectional geometry of fiber-like poly(3-hexylthiophene)-based block copolymer micelles has been determined using small- and wide-angle X-ray scattering (SAXS and WAXS, respectively) techniques alongside electron and atomic for...

Nanorods with Different Surface Properties in Directing the Compatibilization Behavior and the Morphological Transition of Immiscible Polymer Blends in Both Shear and Shear-Free Conditions

10.1021/acs.macromol.7b02624

2018-04-10

To explore the mechanism of how the nanorod surface properties regulate the compatibilization behavior and the morphology transition in demixing polymer blends, we perform dissipative particle dynamics simulations and study the impact of three typical nanorod...

Fracture Process of Double-Network Gels by Coarse-Grained Molecular Dynamics Simulation

10.1021/acs.macromol.8b00124

2018-04-10

Double-network (DN) gels consisting of highly and slightly cross-linked networks exhibit good mechanical properties, complicated deformation behavior, and fracture processes owing to the existence of a large number of influential parameters. To determine the ...

Interpreting Neutron Reflectivity Profiles of Diblock Copolymer Nanocomposite Thin Films Using Hybrid Particle-Field Simulations

10.1021/acs.macromol.8b00180

2018-04-10

Mixtures of block copolymers and nanoparticles (block copolymer nanocomposites) are known to microphase separate into a plethora of microstructures, depending on the composition, length scale, and nature of interactions among its different constituents. Confi...

Highly Active Organic Lewis Pairs for the Copolymerization of Epoxides with Cyclic Anhydrides: Metal-Free Access to Well-Defined Aliphatic Polyesters

10.1021/acs.macromol.8b00499

2018-04-10

Polyester synthesis from the alternating copolymerization of epoxides with cyclic anhydrides via a metal-free route remains a key challenge. This work reports the development of a highly active organocatalytic route for the copolymerization of a spectrum of e...

Capillary Imbibition of Polymer Mixtures in Nanopores

10.1021/acs.macromol.7b02724

2018-04-09

Capillary imbibition of homogeneous mixtures of entangled poly(ethylene oxide) melts in nanopores of self-ordered nanoporous alumina follows a t1/2 dependence but contradicts the classical Lucas–Washburn equation. Herein we employ reflection microscopy and se...