Foaming of Bio-Based PLA/PBS/PBAT Ternary Blends with Added Nanohydroxyapatite Using Supercritical CO2: Effect of Operating Strategies on Cell Structure DOI Creative Commons
Peihua Chen, Chin‐Wen Chen,

Ting‐Shan Chan

et al.

Molecules, Journal Year: 2025, Volume and Issue: 30(9), P. 2056 - 2056

Published: May 5, 2025

This study explored the innovative foaming behavior of a novel biodegradable polymer blend consisting polylactic acid/poly(butylene succinate)/poly(butylene adipate-co-terephthalate) (PLA/PBS/PBAT) enhanced with nanohydroxyapatite (nHA), using supercritical carbon dioxide (SCCO2) as an environmentally friendly physical agent. The aim was to investigate effects various strategies on resulting cell structure, aiming for potential applications in tissue engineering. Eight were examined, starting basic saturation process at high temperature and pressure, followed by rapid decompression ambient conditions, referred (1T-1P) strategy. Intermediate pressure variations introduced before final evaluate impact operating parameters further. These included intermediate-temperature cooling (2T-1P), intermediate (2T-2P), gradual (2T-2P, stepwise ΔP). SEM imaging revealed that ΔP) strategy produced bimodal structure featuring small cells ranging from 105 164 μm large between 476 889 μm. demonstrated size influenced regulation reduction change temperature. results interpreted based classical nucleation theory, gas solubility principle, effect melt strength. Foaming average size, density, expansion ratio, porosity, opening content are reported. hydrophilicity foamed blends evaluated measuring water contact angle. Typical compressive stress–strain curves obtained DMA showed consistent trend reflecting foam stiffness.

Language: Английский

Foaming of Bio-Based PLA/PBS/PBAT Ternary Blends with Added Nanohydroxyapatite Using Supercritical CO2: Effect of Operating Strategies on Cell Structure DOI Creative Commons
Peihua Chen, Chin‐Wen Chen,

Ting‐Shan Chan

et al.

Molecules, Journal Year: 2025, Volume and Issue: 30(9), P. 2056 - 2056

Published: May 5, 2025

This study explored the innovative foaming behavior of a novel biodegradable polymer blend consisting polylactic acid/poly(butylene succinate)/poly(butylene adipate-co-terephthalate) (PLA/PBS/PBAT) enhanced with nanohydroxyapatite (nHA), using supercritical carbon dioxide (SCCO2) as an environmentally friendly physical agent. The aim was to investigate effects various strategies on resulting cell structure, aiming for potential applications in tissue engineering. Eight were examined, starting basic saturation process at high temperature and pressure, followed by rapid decompression ambient conditions, referred (1T-1P) strategy. Intermediate pressure variations introduced before final evaluate impact operating parameters further. These included intermediate-temperature cooling (2T-1P), intermediate (2T-2P), gradual (2T-2P, stepwise ΔP). SEM imaging revealed that ΔP) strategy produced bimodal structure featuring small cells ranging from 105 164 μm large between 476 889 μm. demonstrated size influenced regulation reduction change temperature. results interpreted based classical nucleation theory, gas solubility principle, effect melt strength. Foaming average size, density, expansion ratio, porosity, opening content are reported. hydrophilicity foamed blends evaluated measuring water contact angle. Typical compressive stress–strain curves obtained DMA showed consistent trend reflecting foam stiffness.

Language: Английский

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