Self-Healing Four-Dimensional Printing with an Ultraviolet Curable Double-Network Shape Memory Polymer System

2019 ◽  
Vol 11 (10) ◽  
pp. 10328-10336 ◽  
Author(s):  
Biao Zhang ◽  
Wang Zhang ◽  
Zhiqian Zhang ◽  
Yuan-Fang Zhang ◽  
Hardik Hingorani ◽  
...  
Keyword(s):  
Shape Memory ◽  
Shape Memory Polymer ◽  
Polymer System ◽  
Self Healing ◽  
Double Network ◽  
Ultraviolet Curable ◽  
Dimensional Printing

Poly(vinyl alcohol)–Poly(ethylene glycol) Double-Network Hydrogel: A General Approach to Shape Memory and Self-Healing Functionalities

Langmuir ◽  
2015 ◽  
Vol 31 (42) ◽  
pp. 11709-11716 ◽  
Author(s):  
Guo Li ◽  
Hongji Zhang ◽  
Daniel Fortin ◽  
Hesheng Xia ◽  
Yue Zhao
Keyword(s):  
Ethylene Glycol ◽  
Shape Memory ◽  
Vinyl Alcohol ◽  
Poly Vinyl Alcohol ◽  
Self Healing ◽  
Poly Ethylene Glycol ◽  
Double Network ◽  
Poly Ethylene

scholarly journals The Influence of Shape Changing Behaviors from 4D Printing through Material Extrusion Print Patterns and Infill Densities

Materials ◽  
2020 ◽  
Vol 13 (17) ◽  
pp. 3754
Author(s):  
Seokwoo Nam ◽  
Eujin Pei
Keyword(s):  
Shape Memory ◽  
Recovery Time ◽  
Shape Recovery ◽  
Shape Memory Polymer ◽  
Material Extrusion ◽  
Concentric Pattern ◽  
Dimensional Printing ◽  
Recovery Result ◽  
Am Processes ◽  
Recovery Temperature

Four-dimensional printing (4DP) is an approach of using Shape Memory Materials (SMMs) with additive manufacturing (AM) processes to produce printed parts that can deform over a determined amount of time. This research examines how Polylactic Acid (PLA), as a Shape Memory Polymer (SMP), can be programmed by manipulating the build parameters of material extrusion. In this research, a water bath experiment was used to show the results of the shape-recovery of bending and shape-recovery speed of the printed parts, according to the influence of the print pattern, infill density and recovery temperature (Tr). In terms of the influence of the print pattern, the ‘Quarter-cubic’ pattern with a 100% infill density showed the best recovery result; and the ‘Line’ pattern with a 20% infill density showed the worst recovery result. The ‘Cubic-subdivision’ pattern with a 20% infill density demonstrated the shortest recovery time; and the ‘Concentric’ pattern with a 100% infill density demonstrated the longest recovery time. The results also showed that a high temperature and high infill density provided better recovery, and a low temperature and low infill density resulted in poor recovery.

A multifunctional metal-biopolymer coordinated double network hydrogel combined with multi-stimulus responsiveness, self-healing, shape memory and antibacterial properties

2020 ◽  
Vol 8 (11) ◽  
pp. 3193-3201 ◽  
Author(s):  
Kun Yan ◽  
Feiyang Xu ◽  
Chunyu Wang ◽  
Yingying Li ◽  
Yuanli Chen ◽  
...  
Keyword(s):  
Coordination Chemistry ◽  
Shape Memory ◽  
Antibacterial Properties ◽  
Metal Coordination ◽  
Self Healing ◽  
Double Network ◽  
Assembly Technology

A universal, straightforward macroscale assembly technology has been presented for fabrication of polysaccharide-based multifunctional DN gels based on metal coordination chemistry.

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