TY - JOUR
T1 - 4D printing of smart polymer nanocomposites
T2 - Integrating graphene and acrylate based shape memory polymers
AU - Chowdhury, Jaydeep
AU - Anirudh, Premnath Vijay
AU - Karunakaran, Chandrasekaran
AU - Rajmohan, Vasudevan
AU - Mathew, Arun Tom
AU - Koziol, Krzysztof
AU - Alsanie, Walaa F.
AU - Kannan, Chidambaram
AU - Balan, Arunachalam S.S.
AU - Thakur, Vijay Kumar
PY - 2021/10/24
Y1 - 2021/10/24
N2 - The ever-increasing demand for materials to have superior properties and satisfy functions in the field of soft robotics and beyond has resulted in the advent of the new field of four-dimensional (4D) printing. The ability of these materials to respond to various stimuli inspires novel applications and opens several research possibilities. In this work, we report on the 4D printing of one such Shape Memory Polymer (SMP) tBA-co-DEGDA (tert-Butyl Acrylate with diethylene glycol diacrylate). The novelty lies in establishing the relationship between the various characteristic properties (tensile stress, surface roughness, recovery time, strain fixity, and glass transition temperature) concerning the fact that the print parameters of the laser pulse frequency and print speed are governed in the micro-stereolithography (Micro SLA) method. It is found that the sample printed with a speed of 90 mm/s and 110 pulses/s possessed the best batch of properties, with shape fixity percentages of about 86.3% and recovery times as low as 6.95 s. The samples built using the optimal parameters are further subjected to the addition of graphene nanoparticles, which further enhances all the mechanical and surface properties. It has been observed that the addition of 0.3 wt.% of graphene nanoparticles provides the best results.
AB - The ever-increasing demand for materials to have superior properties and satisfy functions in the field of soft robotics and beyond has resulted in the advent of the new field of four-dimensional (4D) printing. The ability of these materials to respond to various stimuli inspires novel applications and opens several research possibilities. In this work, we report on the 4D printing of one such Shape Memory Polymer (SMP) tBA-co-DEGDA (tert-Butyl Acrylate with diethylene glycol diacrylate). The novelty lies in establishing the relationship between the various characteristic properties (tensile stress, surface roughness, recovery time, strain fixity, and glass transition temperature) concerning the fact that the print parameters of the laser pulse frequency and print speed are governed in the micro-stereolithography (Micro SLA) method. It is found that the sample printed with a speed of 90 mm/s and 110 pulses/s possessed the best batch of properties, with shape fixity percentages of about 86.3% and recovery times as low as 6.95 s. The samples built using the optimal parameters are further subjected to the addition of graphene nanoparticles, which further enhances all the mechanical and surface properties. It has been observed that the addition of 0.3 wt.% of graphene nanoparticles provides the best results.
KW - 4D printing
KW - Graphene
KW - Shape memory polymer
KW - Strain fixity
UR - http://www.scopus.com/inward/record.url?scp=85117904236&partnerID=8YFLogxK
U2 - 10.3390/polym13213660
DO - 10.3390/polym13213660
M3 - Article
C2 - 34771217
AN - SCOPUS:85117904236
SN - 2073-4360
VL - 13
JO - Polymers
JF - Polymers
IS - 21
M1 - 3660
ER -