Jeon, Jei Gyeong So, Byeong Jun Choi, Yuseung Han, Yusu Kim, Taehoon Shin, Gilyong Lee, Ju Hwan Kim, Hyeong Jun Kim, Ju Hyeon Farhangdoust, Saman Chang, Fu-Kuo Kim, Minkook Lee, Min Wook Yun, Sungryul Kang, Tae June 2024-08-08T01:30:06Z 2024-08-08T01:30:06Z 2024-08-08 2024-10 1359-835X https://pubs.kist.re.kr/handle/201004/150376 When selecting a polymer matrix to make shape memory polymer composites (SMPCs), it is crucial to consider high elastic modulus below the switching temperature (Tsw), a significant variation in the modulus above Tsw, and the ability to control Tsw. This research introduces shape-recoverable structural composites fabricated from poly (tert-butyl acrylate-co-acrylic acid) (PtBA-AA), which has a significant modulus variation before and after Tsw. Capillary numbers are assessed to minimize void formation at varying acrylic acid (AA) concentrations, which regulate the copolymer's polarity and the thermo-mechanical properties. The glass transition temperature of PtBA-AA can be adjusted from 47.4 degrees C to 91.6 degrees C. Furthermore, the elastic modulus of SMPC increases from 13 GPa to 20 GPa, whereas the tensile strength increases from 526 MPa to 889 MPa. The maximum recovery strength measured 100.4 MPa at an AA molar ratio of 0.23, accompanied by a fixity of 89.1 % and a recovery ratio of 97.2 %. English Pergamon Press Ltd. Thermo-mechanical properties of shape-recoverable structural composites via vacuum-assisted resin transfer molding process and in-situ polymerization of poly (tert-butyl acrylate-co-acrylic acid) copolymer Article 10.1016/j.compositesa.2024.108360 1 Composites Part A: Applied Science and Manufacturing, v.185 Composites Part A: Applied Science and Manufacturing 185 N scie scopus 001276159000001 2-s2.0-85199072484 Engineering, Manufacturing Materials Science, Composites Engineering Materials Science Article MEMORY POLYMER MODEL BEHAVIOR Shape memory polymer composites Recovery stress Poly ( tert -butyl acrylate-co-acrylic acid) Vacuum-assisted resin transfer molding (VARTM)