Simultaneously Enhancing Mechanical Strength, Toughness, and Fire Retardancy of Biobased Polyurethane by Regulating Soft/Hard Segments and Crystallization Behavior

ACS Applied Polymer Materials, Год журнала: 2024, Номер 6(3), С. 1973 - 1982

Опубликована: Янв. 23, 2024

In this work, biobased flame-retardant polyurethanes were designed. First, a vanillin-based diol (VDP), as the hard segment, was prepared by condensation and addition reactions of vanillin with DDM (4,4′-diaminodiphenylmethane) DOPO (9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide). Then, polyurethane materials FRBPU-xP polycondensation reaction different contents VDP, crystallized polycaprolactone diol, HDI modulating amount (x) P. Interestingly, when VDP increased from 0 to 14.5 wt % (P = 1.0%) PCL decreased 82.4 64.8 %, Tg significantly −34.7 2.8 °C, while tensile strength 10.7 15.6 MPa elongation at break 822% 930%, showing simultaneous mechanical strengthening toughening. These behaviors can be ascribed (1) increase diols enhancement intermolecular interactions (2) decrease crystallinity 21.2% 14.5% due decreasing content inhibiting crystallization behavior induced which helped improve ductility material. Furthermore, LOI value FRBPU-0.5P reached 29.6%, material achieved UL-94 V-0 rating. addition, showed good reprocessability, FRBPU-1.0P had retention 72.6% 93.3% for its after thermal remolding, respectively. This work provides an idea preparation high-performance polyurethane.

Язык: Английский

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Self-Healing, Highly Stretchable Conductive Polyurethane Elastomers Containing Aniline Trimers with Shape Memory Effect

Polymer, Год журнала: 2025, Номер unknown, С. 128139 - 128139

Опубликована: Фев. 1, 2025

Язык: Английский

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Multi-responsive shape memory porous composites for self-powered sensors and self-sensing actuators

Chemical Engineering Journal, Год журнала: 2023, Номер 477, С. 147059 - 147059

Опубликована: Окт. 31, 2023

Язык: Английский

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Super-tough polylactic acid blends via tunable dynamic vulcanization of biobased polyurethanes

Composites Part B Engineering, Год журнала: 2024, Номер 276, С. 111363 - 111363

Опубликована: Март 6, 2024

Язык: Английский

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Super-tough polylactic acid blends via tunable dynamic vulcanization of polyurethanes with ultrahigh bio-based content

Composites Communications, Год журнала: 2024, Номер 48, С. 101940 - 101940

Опубликована: Май 21, 2024

Язык: Английский

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Reversible shape memory behavior of knitting-fabric reinforced polymer matrix composites

Composites Communications, Год журнала: 2024, Номер 48, С. 101962 - 101962

Опубликована: Июнь 1, 2024

Язык: Английский

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Ultra-fast light repair, ultrasensitive, large strain detection range PDA@RGO/EVA composites fiber flexible strain sensor

Sensors and Actuators A Physical, Год журнала: 2024, Номер 377, С. 115755 - 115755

Опубликована: Окт. 1, 2024

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High-performance shape memory cyanate ester with two-way shape memory effect and reconfigurability

European Polymer Journal, Год журнала: 2025, Номер unknown, С. 113735 - 113735

Опубликована: Янв. 1, 2025

Язык: Английский

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Polyurethane‐Based Shape Memory Compression Stockings with Antimicrobial and Pressure Regulating Properties for the Relief of Chronic Venous Disease

Advanced Materials Technologies, Год журнала: 2025, Номер unknown

Опубликована: Янв. 28, 2025

Abstract Chronic venous disease (CVD) causes a heavy social and economic burden, which not only seriously diminishes the quality of life but also increases healthcare costs for patients. Herein, compression stocking fabricated with polyurethane fibers is developed, exhibits excellent antimicrobial shape memory properties. In particular, introduction 1,2‐hydroxyethylpiperazine (HEP) dramatically shortens relaxation time effectively promotes properties polyurethane. Furthermore, wet spinning knitting methods are applied to obtain stockings, whose interfacial pressure ranges from 8 35 mmHg can be regulated via initial tension trigger temperatures as needed. addition, stockings demonstrate properties, achieving an inactivation rate 99.99% against S. aureus E. coli , while superior cytocompatibility negligible skin irritation guarantee its biomedical applications. Overall, manage solve two major problems regulation bacterial infection CVD patients, highly important care this public health disease.

Язык: Английский

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Reversible Shape-Color Synchronous Dual-Response Flexible Poly(vinyl chloride)-Based Composite Film via Star-Shaped Diacetylene-Modified Poly(ε-caprolactone)

ACS Applied Polymer Materials, Год журнала: 2025, Номер unknown

Опубликована: Янв. 30, 2025

Язык: Английский

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