3D-Printed Poly(lactic acid)/Poly(ethylene glycol) Scaffolds with Shape-Memory Effect near Physiological Temperature

3D-Printed Poly(lactic acid)/Poly(ethylene glycol) Scaffolds with Shape-Memory Effect near Physiological Temperature

Bibliographic Details
Parent link:Polymers.— .— Basel: MDPI AG
Vol. 18, iss. 1.— 2026.— Article number 140, 16 p.
Other Authors: Fetisova A. A. Anastasiya Alekseevna, Abdullah bin F. Firoz, Lozhkomoev A. S. Aleksandr Sergeevich, Senkina E. I. Elena Ivanovna, Ryumin E. E. Egor Evgenjevich, Surmeneva M. A. Maria Alexandrovna, Surmenev R. A. Roman Anatolievich
Summary:Title screen
Biocompatible poly(lactic acid) (PLA) was plasticized with poly(ethylene glycol) (PEG) added at concentrations of 10, 15, and 20 wt.% relative to PLA, and then processed into gyroid triply periodic minimal surface (TPMS) scaffolds using fused filament fabrication (FFF) 3D printing. The influence of PEG concentration and gyroid structure (50% infill density) on thermal transitions, crystallinity, and low–temperature shape-memory performance was systematically investigated. The shape-memory effect (SME) of the PLA–based scaffolds was tailored through compositional control and structural design. Shape recovery under thermal activation at 40 °C and 50 °C was examined to reveal the correlation between composition and structure in governing low–temperature shape-memory behavior. The optimal composition (PLA/10 PEG, 50% gyroid infill) achieved shape recovery with a recovery ratio (Rr) of 97 ± 1% at 40 °C within 6 ± 1 min, demonstrating optimal shape-memory activation close to physiological temperature. Structural and morphological changes were characterized using ATR–FTIR, Raman spectroscopy, DSC, XRD, and SEM, providing comprehensive insight into the plasticization of the PLA matrix and its impact on structure–property relationships relevant to bone tissue engineering
Текстовый файл
Language:English
Published: 2026
Subjects:
shape-memory polymer
3D printing
additive manufacturing
tissue engineering
электронный ресурс
труды учёных ТПУ
Online Access:https://doi.org/10.3390/polym18010140
Format: Electronic Book Chapter
KOHA link:https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=685352

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