Modeled Networks Shape Memory Polyurethanes Based on a Four-Armed Regularized Structural Crosslinking Agent of Pentaerythritol Propylene Oxide (PO-PTOL) DOI
Yu Qiao, Wenzhong Ma,

You Zhang

et al.

Journal of Macromolecular Science Part B, Journal Year: 2024, Volume and Issue: unknown, P. 1 - 14

Published: Dec. 12, 2024

To improve the shape recovery degree, chemical cross-linking mode effectively prevents slippage between molecular chains of memory polyurethanes (SMPUs). However, irregular crosslinked network structure formed tends to be unevenly stressed when subjected external forces, and stress concentrations occur, leading a decrease in mechanical properties polymer. obtain better properties, we introduced four-armed, regularized pentaerythritol propylene oxide (PO-PTOL) into SMPUs networks prepare (PUX) with model networks, controlled topology PUX by adjusting content PO-PTOL. Among them, PU0.15 exhibited ultra-high (tensile strength, elongation at break, Young's modulus 32 MPa, 2011.7%, 1.59 respectively) excellent (shape time less than 1 s, fixation degree 92.7% 98.5%, respectively). This study provides new ideas for designing structures is paradigm introducing modeled SMPU networks.

Language: Английский

Performance of PTMEG/CO composite polyurethane and modification mechanism of polyurethane-modified asphalt DOI
Xiao Yang,

Jinxiang Hong,

Zijia Xiong

et al.

Construction and Building Materials, Journal Year: 2025, Volume and Issue: 475, P. 141117 - 141117

Published: April 11, 2025

Language: Английский

Citations

0
Easy synthesis of self-healing thermoplastic elastomer (TPE) via functionalization of styrene block copolymer (SEBS) with a cyclic amine compound in melt state and rheological assessment of non-covalent dynamic interactions DOI
Mine Begum Alanalp, Ali Durmuş

Polymer, Journal Year: 2025, Volume and Issue: unknown, P. 128083 - 128083

Published: Jan. 1, 2025

Language: Английский

Citations

0
Effects of borax loading on the self-healing properties of epoxidized natural rubber DOI Creative Commons
Tamonwan Chantaramanee, Supachok Tanpichai, Anyaporn Boonmahitthisud

et al.

RSC Advances, Journal Year: 2025, Volume and Issue: 15(16), P. 12087 - 12099

Published: Jan. 1, 2025

Self-healing rubber without the need for external stimuli was fabricated by incorporating borax into epoxidized natural (ENR) under alkaline conditions.

Language: Английский

Citations

0
Modeled Networks Shape Memory Polyurethanes Based on a Four-Armed Regularized Structural Crosslinking Agent of Pentaerythritol Propylene Oxide (PO-PTOL) DOI
Yu Qiao, Wenzhong Ma,

You Zhang

et al.

Journal of Macromolecular Science Part B, Journal Year: 2024, Volume and Issue: unknown, P. 1 - 14

Published: Dec. 12, 2024

To improve the shape recovery degree, chemical cross-linking mode effectively prevents slippage between molecular chains of memory polyurethanes (SMPUs). However, irregular crosslinked network structure formed tends to be unevenly stressed when subjected external forces, and stress concentrations occur, leading a decrease in mechanical properties polymer. obtain better properties, we introduced four-armed, regularized pentaerythritol propylene oxide (PO-PTOL) into SMPUs networks prepare (PUX) with model networks, controlled topology PUX by adjusting content PO-PTOL. Among them, PU0.15 exhibited ultra-high (tensile strength, elongation at break, Young's modulus 32 MPa, 2011.7%, 1.59 respectively) excellent (shape time less than 1 s, fixation degree 92.7% 98.5%, respectively). This study provides new ideas for designing structures is paradigm introducing modeled SMPU networks.

Language: Английский

Citations

0