DOE PAGES title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Supersoft Norbornene–Based Thermoplastic Elastomers with High Strength and Upper Service Temperature

Journal Article · · Advanced Materials

With over 6 million tons produced annually, thermoplastic elastomers (TPEs) have become ubiquitous in modern society, due to their unique combination of elasticity, toughness, and reprocessability. Nevertheless, industrial TPEs display a tradeoff between softness and strength, along with low upper service temperatures, typically ≤100 °C. This limits their utility, such as in bio-interfacial applications where supersoft deformation is required in tandem with strength, in addition to applications that require thermal stability (e.g., encapsulation of electronics, seals/joints for aeronautics, protective clothing for firefighting, and biomedical devices that can be subjected to steam sterilization). Thus, combining softness, strength, and high thermal resistance into a single versatile TPE has remained an unmet opportunity. Through de novo design and synthesis of novel norbornene-based ABA triblock copolymers, this gap is filled. Ring-opening metathesis polymerization is employed to prepare TPEs with an unprecedented combination of properties, including skin-like moduli (<100 kPa), strength competitive with commercial TPEs (>5 MPa), and upper service temperatures akin to high-performance plastics (≈260 °C). Here, the materials are elastic, tough, reprocessable, and shelf stable (≥2 months) without incorporation of plasticizer. Structure–property relationships identified herein inform development of next-generation TPEs that are both biologically soft yet thermomechanically durable.

Research Organization:
University of Texas at Austin, TX (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES); National Science Foundation (NSF); Robert A. Welch Foundation; Camille & Henry Dreyfus Foundation
Grant/Contract Number:
SC0019272
OSTI ID:
2370051
Alternate ID(s):
OSTI ID: 2377177
Journal Information:
Advanced Materials, Journal Name: Advanced Materials Journal Issue: 30 Vol. 36; ISSN 0935-9648
Publisher:
WileyCopyright Statement
Country of Publication:
United States
Language:
English

References (56)

Rapid self-assembly of brush block copolymers to photonic crystals journal August 2012
High χ–Low N Block Polymers: How Far Can We Go? journal September 2015
Sticky Architecture: Encoding Pressure Sensitive Adhesion in Polymer Networks journal February 2023
Metal‐Free Ring‐Opening Metathesis Polymerization with Hydrazonium Initiators** journal April 2022
Evaluation of strain in hydrocarbons. The strain in adamantane and its origin journal April 1970
Dynamic Bottlebrush Polymer Networks: Self-Healing in Super-Soft Materials journal March 2020
Stretchable Thermoplastic Elastomer Optical Fibers for Sensing of Extreme Deformations journal December 2018
Mechanical biocompatibility of highly deformable biomedical materials journal August 2015
Solvent-free, supersoft and superelastic bottlebrush melts and networks journal November 2015
Phthalate plasticizer di(2‐ethyl‐hexyl) phthalate induces cyclooxygenase‐2 expression in gastric adenocarcinoma cells journal July 2019
Ring-opening metathesis polymerization of 8-membered cyclic olefins journal January 2014
Synthesis of ABA Triblock Copolymers via a Tandem Ring-Opening Metathesis Polymerization:  Atom Transfer Radical Polymerization Approach journal January 2000
Triblock polyester thermoplastic elastomers with semi-aromatic polymer end blocks by ring-opening copolymerization journal January 2020
Leaching of the plasticizer di(2-ethylhexyl)phthalate (DEHP) from plastic containers and the question of human exposure journal November 2014
Metal-Free Ring-Opening Metathesis Polymerization journal January 2015
The ROMP toolbox upgraded journal June 2010
Mechanically-compliant intracortical implants reduce the neuroinflammatory response journal August 2014
Approaches to Sustainable and Continually Recyclable Cross-Linked Polymers journal August 2018
Combining Ring-Opening Metathesis Polymerization and Cyclic Ester Ring-Opening Polymerization To Form ABA Triblock Copolymers from 1,5-Cyclooctadiene and d,l -Lactide journal April 2009
Bottlebrush Bridge between Soft Gels and Firm Tissues journal January 2020
Room temperature 3D printing of super-soft and solvent-free elastomers journal November 2020
Fabrication of New Thermoplastic Polyurethane Elastomers with High Heat Resistance for 3D Printing Derived from 3,3-Dimethyl-4,4′-diphenyl Diisocyanate journal May 2020
All acrylic-based thermoplastic elastomers with high upper service temperature and superior mechanical properties journal January 2017
Plasticizers and Cardiovascular Health: Role of Adipose Tissue Dysfunction journal February 2021
Plasticizer Effects on Physical–Mechanical Properties of Solvent Cast Soluplus® Films journal May 2013
Amphiphilic ABA triblock copolymers via combination of ROMP and ATRP in ionic liquid: Synthesis, characterization, and self-assembly journal December 2008
Recent advances in ring-opening metathesis polymerization, and application to synthesis of functional materials journal October 2010
Bridging the gap between rubbers and plastics: a review on thermoplastic polyolefin elastomers journal January 2021
Nonlinear elasticity in biological gels journal May 2005
Thermoplastic Elastomers book January 2011
Chameleon-like elastomers with molecularly encoded strain-adaptive stiffening and coloration journal March 2018
Thermoplastic Elastomers with Composite Crystalline−Glassy Hard Domains and Single-Phase Melts journal May 2010
Solvothermal Annealing of Block Copolymer Thin Films journal October 2013
ROMP of norbornene and oxanorbornene derivatives with pendant fluorophore carbazole and coumarin groups journal March 2022
Mechanistic and Kinetic Studies of the Ring Opening Metathesis Polymerization of Norbornenyl Monomers by a Grubbs Third Generation Catalyst journal October 2019
Block Copolymer Pressure-Sensitive Adhesives Derived from Fatty Acids and Triacetic Acid Lactone journal June 2020
Managing Plastic Waste─Sorting, Recycling, Disposal, and Product Redesign journal November 2021
Renewable-Resource Thermoplastic Elastomers Based on Polylactide and Polymenthide journal November 2007
The stiffness of living tissues and its implications for tissue engineering journal February 2020
ABA Triblock Brush Polymers: Synthesis, Self-Assembly, Conductivity, and Rheological Properties journal July 2015
Strong, Resilient, and Sustainable Aliphatic Polyester Thermoplastic Elastomers journal May 2017
The Entanglements of Macromolecules and Their Influence on the Properties of Polymers journal April 2019
Waste Rubber Recycling: A Review on the Evolution and Properties of Thermoplastic Elastomers journal February 2020
Thermoplastic elastomers: fundamentals and applications journal November 2000
Super-soft, firm, and strong elastomers toward replication of tissue viscoelastic response journal January 2022
Synthesis and characterization of hydrogenated poly(norbornene endo-dicarboximide)s prepared by ring opening metathesis polymerization journal May 2012
Microcellular Foam from Ethylene Vinyl Acetate/Polybutadiene Rubber (EVA/BR) Based Thermoplastic Elastomers for Footwear Applications journal July 2012
Improved Elastic Recovery from ABC Triblock Terpolymers journal July 2023
Foreign Body Reaction to Implanted Biomaterials and Its Impact in Nerve Neuroprosthetics journal April 2021
Renewable, Degradable, and Chemically Recyclable Cross-Linked Elastomers journal October 2016
Impact of Plasticizer on the Intestinal Epithelial Integrity and Tissue-Repairing Ability within Cells in the Proximity of the Human Gut Microbiome journal January 2023
Recent advances in thermoplastic elastomers from living polymerizations: Macromolecular architectures and supramolecular chemistry journal August 2019
Plasticiser loss from plastic or rubber products through diffusion and evaporation journal April 2019
User Guide to Ring-Opening Metathesis Polymerization of endo-Norbornene Monomers with Chelated Initiators journal July 2022
A Model Treating Tensile Deformation of Semicrystalline Polymers:  Quasi-Static Stress−Strain Relationship and Viscous Stress Determined for a Sample of Polyethylene journal December 2004
Catalytic living ring-opening metathesis polymerization with Grubbs’ second- and third-generation catalysts journal April 2019