4.7 Article

Hydrogen bond reinforced, transparent polycaprolactone-based degradable polyurethane

Journal

MATERIALS CHEMISTRY FRONTIERS
Volume 5, Issue 14, Pages 5371-5381

Publisher

ROYAL SOC CHEMISTRY
DOI: 10.1039/d1qm00476j

Keywords

-

Funding

  1. National Natural Science Foundation of China [NSFC 51873170, 11732012]
  2. National Key R&D Program of China [2019YFA0706801]
  3. Key Laboratory Construction Program of Xi'an Science and Technology Bureau [201805056ZD7CG40]
  4. Young Talent Support Plan of Xi'an Jiaotong University
  5. One Hundred Talents Program of Shaanxi Province
  6. Shaanxi Key Industry Innovation Chain Project [2019ZDLGY02-02]

Ask authors/readers for more resources

Transparent and degradable polyurethane elastomers with high strength and toughness are in demand for various applications. This study introduced a facile and efficient strategy by employing imidazolidinyl urea (IU) as a multiple hydrogen-bonding motif to fabricate elastomers with superior breaking strength and toughness. The elastomers showed potential application in post-operative anti-adhesion, with breaking strength reaching up to 49.9 MPa after pre-stretching to 600% strain.
Transparent and degradable polyurethane elastomers with high strength and toughness are in demand for various applications, such as tissue engineering and flexible electronics. However, designing specific chemical structures is challenging, and thus fabricating novel elastomers is sometimes unattainable. An effective approach to develop elastomers is through the introduction of sacrificial bonds, e.g. hydrogen bonds, to enhance their mechanical properties and toughness, which provide hidden lengths and hierarchical structures for energy dissipation. This study introduced a facile and efficient strategy by employing imidazolidinyl urea (IU) as a multiple hydrogen-bonding motif to fabricate transparent and degradable polyurethane elastomers (PHI) with superior breaking strength and excellent toughness. The resultant breaking strength and toughness reached up to 24.9 MPa and 168.2 MJ m(-3), respectively. Additionally, the breaking strength increased to 49.9 MPa after the sample was pre-stretched to 600% strain due to strain-induced crystallization (SIC). Moreover, the PHI film with degradability and good biocompatibility showed potential application in post-operative anti-adhesion.

Authors

I am an author on this paper
Click your name to claim this paper and add it to your profile.

Reviews

Primary Rating

4.7
Not enough ratings

Secondary Ratings

Novelty
-
Significance
-
Scientific rigor
-
Rate this paper

Recommended

No Data Available
No Data Available