scholarly journals 4D printing of shape memory polylactic acid (PLA) components: A scientific study from the fabrication techniques to the applications

Polymer ◽  
2021 ◽  
pp. 124080
Author(s):  
Mehrshad Mehrpouya ◽  
Henri Vahabi ◽  
Shahram Janbaz ◽  
Arash Drafsheh ◽  
Thomas R. Mazur ◽  
...  
Keyword(s):  
Shape Memory ◽  
Polylactic Acid ◽  
Scientific Study ◽  
4D Printing

scholarly journals Structural multi-colour invisible inks with submicron 4D printing of shape memory polymers

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Wang Zhang ◽  
Hao Wang ◽  
Hongtao Wang ◽  
John You En Chan ◽  
Hailong Liu ◽  
...  
Keyword(s):  
Shape Memory ◽  
Information Hiding ◽  
Shape Memory Polymer ◽  
Shape Memory Polymers ◽  
Photonic Devices ◽  
Temperature Sensitive ◽  
4D Printing ◽  
Two Photon ◽  
Shape Memory Effects ◽  
Nanoscale Structure

AbstractFour-dimensional (4D) printing of shape memory polymer (SMP) imparts time responsive properties to 3D structures. Here, we explore 4D printing of a SMP in the submicron length scale, extending its applications to nanophononics. We report a new SMP photoresist based on Vero Clear achieving print features at a resolution of ~300 nm half pitch using two-photon polymerization lithography (TPL). Prints consisting of grids with size-tunable multi-colours enabled the study of shape memory effects to achieve large visual shifts through nanoscale structure deformation. As the nanostructures are flattened, the colours and printed information become invisible. Remarkably, the shape memory effect recovers the original surface morphology of the nanostructures along with its structural colour within seconds of heating above its glass transition temperature. The high-resolution printing and excellent reversibility in both microtopography and optical properties promises a platform for temperature-sensitive labels, information hiding for anti-counterfeiting, and tunable photonic devices.

Thermo‐responsive shape memory properties based on polylactic acid and styrene‐butadiene‐styrene block copolymer

2021 ◽  
pp. 51000
Author(s):  
Fathin Hani Azizul Rahim ◽  
Abdul Aziz Saleh ◽  
Raa Khimi Shuib ◽  
Ku Marsilla Ku Ishak ◽  
Zuratul Ain Abdul Hamid ◽  
...  
Keyword(s):  
Block Copolymer ◽  
Shape Memory ◽  
Polylactic Acid ◽  
Shape Memory Properties ◽  
Styrene Butadiene Styrene ◽  
Styrene Butadiene ◽  
Butadiene Styrene

scholarly journals Multimaterial 4D Printing with Tailorable Shape Memory Polymers

2016 ◽  
Vol 6 (1) ◽  
Author(s):  
Qi Ge ◽  
Amir Hosein Sakhaei ◽  
Howon Lee ◽  
Conner K. Dunn ◽  
Nicholas X. Fang ◽  
...  
Keyword(s):  
Shape Memory ◽  
Shape Memory Polymers ◽  
4D Printing
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