Visualization and quantification of microphase separation in thermoplastic polyurethanes under different hard segment contents and its effect on the mechanical properties

Huang, Miaoming; Li, Zheng; Xu, Wanlin; He, Suqin; Liu, Wentao; Jiang, Lei; Liu, Hao

doi:10.1016/j.polymertesting.2024.108329

Polymer Testing

2024

DOI: 10.1016/j.polymertesting.2024.108329

|View full text |Cite

Visualization and quantification of microphase separation in thermoplastic polyurethanes under different hard segment contents and its effect on the mechanical properties

Miaoming Huang,

Zheng Li,

Wanlin Xu

et al.

Help me understand this report

Search citation statements

Order By: Relevance

Paper Sections

Select...

Citation Types

Supporting

Mentioning

Contrasting

Year Published

2024

2025

Publication Types

Select...

Article3

Relationship

Self Cite0

Independent3

Authors

Journals

Cited by 3 publications

References 40 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

Crystal size effect on large deformation mechanisms of thermoplastic polyurethane

Zhang,

Zhu

2025

Extreme Mechanics Letters

View full text Add to dashboard Cite

Crystal size effect on large deformation mechanisms of thermoplastic polyurethane

Zhang,

Zhu

2025

Extreme Mechanics Letters

View full text Add to dashboard Cite

Molecular-Scale Investigation of the Microphase-Dependent Load Transfer Capability of Polyurethane

Kim,

Choi

2024

Macromolecules

View full text Add to dashboard Cite

In this study, we investigated the mechanism by which the microphase structure of polyurethane (PU), manipulated by the chemical composition, determines its macroscopic mechanical properties. Increasing the hard segment content induced a microphase transition from globular to elongated to bicontinuous. This transition significantly altered the mechanical behavior of PU from hyperelastic to elasto-plastic. This enhancement in the mechanical properties was related to the load-transfer capacity of the hard domains in each microphase. In the globular phase, most of the strain energy was absorbed by the soft matrix, limiting the contribution of the hard phase to the mechanical properties. Conversely, elongated discontinuous structures facilitated a homogeneous strain distribution during tension, promoting an immediate load transfer to the hard domain. To quantitatively evaluate the load-transfer efficiency, a mechanical model in which one soft hyperelastic spring was coupled to two rigid elasto-plastic springs was considered. The effects of the microphase morphology and hard domain dissociation on the load-transfer capability were identified. This study contributes to a molecular-level understanding of the deformation behavior and mechanical response of microphase-separated PU.

show abstract

Itaconic Acid Oligomers for Electrostatically Spun Degradable Implantable Biobased Polyurethane

Quan,

Cui,

Sha

et al. 2024

ACS Appl. Bio Mater.

View full text Add to dashboard Cite

Developing implantable medical materials with excellent comprehensive performance has important practical applications. Cardiovascular and bile ducts are characterized by various forms of diseases and high morbidity and mortality. One of the effective treatment modalities for such diseases is replacement surgery. Since commercially available materials for tubular organ sites are in short supply and the number of autologous and natural grafts is limited, the study of implantable materials that can be prepared in tubes is of great significance. This study reports on an implantable medical polyurethane material (IBP-PU) with a binary soft segment structure prepared by microwave synthesis. The material exhibits excellent mechanical properties (with a mechanical strength of 33.00 ± 4.02 MPa and a strain at break of 519.93 ± 53.44%), and stable thermomechanical properties (T d5% > 250 °C). The excellent biocompatibility of IBP-PU (hemolysis rate = 2.55% and cell survival on the fifth day over 100%, etc.) makes it suitable for implantable medical applications. Its appropriate degradation rate allows for slow in vivo degradation with the generation of tissues, and the degradation products are nontoxic and do not require removal by secondary surgery. Additionally, the material has been successfully prepared using electrostatic spinning technology, resulting in a 5 mm caliber. It is significant for small-caliber cardiovascular, bile duct, and other in vivo tubular grafts.

show abstract

scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.

Contact Info

customersupport@researchsolutions.com

10624 S. Eastern Ave., Ste. A-614

Henderson, NV 89052, USA

This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.

Blog Terms and Conditions API Terms Privacy Policy Contact Cookie Preferences Do Not Sell or Share My Personal Information

Made with 💙 for researchers

Part of the Research Solutions Family.

Visualization and quantification of microphase separation in thermoplastic polyurethanes under different hard segment contents and its effect on the mechanical properties

Cited by 3 publications

References 40 publications

Crystal size effect on large deformation mechanisms of thermoplastic polyurethane

Crystal size effect on large deformation mechanisms of thermoplastic polyurethane

Molecular-Scale Investigation of the Microphase-Dependent Load Transfer Capability of Polyurethane

Itaconic Acid Oligomers for Electrostatically Spun Degradable Implantable Biobased Polyurethane

Contact Info

Product

Resources

About