Unexpected self-healing acceleration within urethane networks: lignosulfonate mediation of ionic and hydrogen bonds for ultra-strong recyclable elastomers DOI
Zheng He, Xiaotao Wang, Xiaoxia Cai

и другие.

Journal of Macromolecular Science Part A, Год журнала: 2024, Номер 61(11), С. 911 - 921

Опубликована: Окт. 16, 2024

Stiff structures are generally considered detrimental to the materials' self-healing efficiency because of rigid conformation and restricted motion molecular chains. However, in this study, an unexpected acceleration was observed a urethane network when lignosulfonate, bio-based stiff structure with benzene rings, introduced into polyurethane matrix. An extraordinary increase mechanical properties achieved just 3 wt% lignosulfonate added pristine sample, including strength from 16.24 MPa 42.89 elongation at break 390% 602%. Importantly, significant enhancement accompanied by notable healing time efficiency, which increased up 44% compared sample. This unique behavior can be attributed mediation on ionic bonds between segment, as well hydrogen formed within segments. ensures ultra-high without compromising capacity opens way for accelerating elastomers through readily available biomass-derived material. In addition, addition lignosulfonates gives elastomer some Anti-UV performance.

Язык: Английский

Multifunctional waterborne polyurethane-cellulose nanofiber composite: Realizing ultrarobust, photoluminescence and swift self-healing via multi-dynamic bonding DOI
Xia Zhang, Fuhao Dong, Mingming Yu

и другие.

Chemical Engineering Journal, Год журнала: 2025, Номер unknown, С. 160302 - 160302

Опубликована: Фев. 1, 2025

Язык: Английский

Процитировано

3

Self-healing waterborne polyurethane originated from waste PET and their composites with polypyrrole for stretchable strain sensor DOI
Keming Zhu, Lan Yang, Xing Zhou

и другие.

Chemical Engineering Journal, Год журнала: 2025, Номер unknown, С. 161515 - 161515

Опубликована: Март 1, 2025

Язык: Английский

Процитировано

1

Colorless and transparent self-healing polyurethane urea with superior tensile strength for protective coating DOI
Zhe Li, Xiaojuan Ma,

Yating Geng

и другие.

European Polymer Journal, Год журнала: 2025, Номер unknown, С. 113827 - 113827

Опубликована: Фев. 1, 2025

Язык: Английский

Процитировано

0

Effect of Disulfide Bond Density on the Properties of Polyurethane/Epoxy Interpenetrating Networks DOI Open Access
Guofeng You, Li Xi, Kai Ren

и другие.

Materials, Год журнала: 2025, Номер 18(7), С. 1636 - 1636

Опубликована: Апрель 3, 2025

Interpenetrating polymer networks (IPNs) are widely used as damping materials across various industries. However, they susceptible to issues such microcracking or fracture over long-term service periods. To address these challenges and improve the performance of IPNs, this research focused on designing synthesizing self-healing polyurethane (PU)/epoxy (EP) interpenetrating (PU/EP-IPNs) enhanced with dynamic disulfide bonds. The incorporation bonds significantly properties materials. shape memory was evaluated, demonstrating high fixation rates up 95.0% exceptional recovery 99.7%. These results indicate materials’ ability revert their original upon heating above glass transition temperature (Tg). In addition, effective range material reached 61.4 °C, loss factor 0.859. This indicates that enhancement is closely related increase in bond density. formation IPN between PU EP also contributed improved mechanical thermomechanical properties. PU/EP-IPNs exhibit significant potential innovative capabilities.

Язык: Английский

Процитировано

0

Unexpected self-healing acceleration within urethane networks: lignosulfonate mediation of ionic and hydrogen bonds for ultra-strong recyclable elastomers DOI
Zheng He, Xiaotao Wang, Xiaoxia Cai

и другие.

Journal of Macromolecular Science Part A, Год журнала: 2024, Номер 61(11), С. 911 - 921

Опубликована: Окт. 16, 2024

Stiff structures are generally considered detrimental to the materials' self-healing efficiency because of rigid conformation and restricted motion molecular chains. However, in this study, an unexpected acceleration was observed a urethane network when lignosulfonate, bio-based stiff structure with benzene rings, introduced into polyurethane matrix. An extraordinary increase mechanical properties achieved just 3 wt% lignosulfonate added pristine sample, including strength from 16.24 MPa 42.89 elongation at break 390% 602%. Importantly, significant enhancement accompanied by notable healing time efficiency, which increased up 44% compared sample. This unique behavior can be attributed mediation on ionic bonds between segment, as well hydrogen formed within segments. ensures ultra-high without compromising capacity opens way for accelerating elastomers through readily available biomass-derived material. In addition, addition lignosulfonates gives elastomer some Anti-UV performance.

Язык: Английский

Процитировано

1