Heat-Responsive PLA/PU/MXene Shape Memory Polymer Blend Nanocomposite: Mechanical, Thermal, and Shape Memory Properties DOI Open Access
Rajita Sanaka, Santosh Kumar Sahu, P.S. Rama Sreekanth

и другие.

Polymers, Год журнала: 2025, Номер 17(3), С. 338 - 338

Опубликована: Янв. 26, 2025

This study investigates the fabrication and characterization of heat-responsive PLA/PU/MXene shape memory polymer blend nanocomposites with varying PLA content (10, 20, 30, 50%) a fixed MXene 0.5 wt.%. The results indicate significant improvements in mechanical properties, 50% showing 300% increase ultimate tensile strength 90% decrease % elongation compared to pure PU. Additionally, exhibited 400% flexural strength. Microstructural analysis revealed dispersed pores sea–island morphology PU blend. Thermal using DSC showed an crystallinity from 33% (pure PU) 45% for blend, indicating enhanced crystalline domains due semi-crystalline nature MXene’s influence on molecular ordering. TGA demonstrated improvement thermal stability, onset temperature rising 185 °C 212 degradation increasing 370 425 attributed rigid structure stabilizing effect. Shape testing that 30% achieved best fixity recovery optimal performance, whereas higher diminished behavior.

Язык: Английский

Heat-Responsive PLA/PU/MXene Shape Memory Polymer Blend Nanocomposite: Mechanical, Thermal, and Shape Memory Properties DOI Open Access
Rajita Sanaka, Santosh Kumar Sahu, P.S. Rama Sreekanth

и другие.

Polymers, Год журнала: 2025, Номер 17(3), С. 338 - 338

Опубликована: Янв. 26, 2025

This study investigates the fabrication and characterization of heat-responsive PLA/PU/MXene shape memory polymer blend nanocomposites with varying PLA content (10, 20, 30, 50%) a fixed MXene 0.5 wt.%. The results indicate significant improvements in mechanical properties, 50% showing 300% increase ultimate tensile strength 90% decrease % elongation compared to pure PU. Additionally, exhibited 400% flexural strength. Microstructural analysis revealed dispersed pores sea–island morphology PU blend. Thermal using DSC showed an crystallinity from 33% (pure PU) 45% for blend, indicating enhanced crystalline domains due semi-crystalline nature MXene’s influence on molecular ordering. TGA demonstrated improvement thermal stability, onset temperature rising 185 °C 212 degradation increasing 370 425 attributed rigid structure stabilizing effect. Shape testing that 30% achieved best fixity recovery optimal performance, whereas higher diminished behavior.

Язык: Английский

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