Polydopamine nanoparticles doped in liquid crystal elastomers for producing dynamic 3D structures

Li, Zhen; Yang, Yang; Wang, Zhenhua; Zhang, Xiaoyong; Chen, Qiaomei; Qian, Xiaojie; Liu, Na; Wei, Yen; Ji, Yan

doi:10.1039/c7ta00458c

Cited by 104 publications

(70 citation statements)

References 55 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This offers a promising strategy to access 3D structures which cannot be obtained by traditional methods 4 . In previous literature, the polymeric materials used for 2D to 3D shape programming are limited to gels 7 , 8 , liquid crystalline elastomers 9 – 11 , shape memory polymers 12 – 14 or other conjugated polymers 15 – 18 , and are fabricated to 3D structures by bending/folding 2D shapes 19 , 20 in response to external stimuli 21 – 29 . More often than not, programming the shape transformation requires special equipment such as a printer 30 and lithographic plate 31 .…”

Section: Introductionmentioning

confidence: 99%

Solvent-assisted programming of flat polymer sheets into reconfigurable and self-healing 3D structures

et al. 2018

Self Cite

View full text Add to dashboard Cite

It is extremely challenging, yet critically desirable to convert 2D plastic films into 3D structures without any assisting equipment. Taking the advantage of solvent-induced bond-exchange reaction and elastic-plastic transition, shape programming of flat vitrimer polymer sheets offers a new way to obtain 3D structures or topologies, which are hard for traditional molding to achieve. Here we show that such programming can be achieved with a pipette, a hair dryer, and a bottle of solvent. The polymer used here is very similar to the commercial epoxy, except that a small percentage of a specific catalyst is involved to facilitate the bond-exchange reaction. The programmed 3D structures can later be erased, reprogrammed, welded with others, and healed again and again, using the same solvent-assisted technique. The 3D structures can also be recycled by hot-pressing into new sheets, which can still be repeatedly programmed.

show abstract

Section: Introductionmentioning

confidence: 99%

Solvent-assisted programming of flat polymer sheets into reconfigurable and self-healing 3D structures

et al. 2018

Self Cite

View full text Add to dashboard Cite

show abstract

“…Thus far, various composite vitrimers have been demonstrated using different filler additives, such as carbon nanodots [78], carbon black [79], graphene [80], silica nanoparticles [81,82], Al 2 O 3 [83], gold nanoparticles [84], cellulose nanofibers [85], carbon fibers [86], glass fibers [87,88], etc. [89][90][91]. In these reports, the functional groups on the filler surface were important parameters for vitrimeric property tuning, as well as for the good distribution of fillers in the vitrimer matrix.…”

Section: Other Trends For the Practical Application Of The Vitrimer Cmentioning

confidence: 99%

Implantation of Recyclability and Healability into Cross-Linked Commercial Polymers by Applying the Vitrimer Concept

Hayashi

2020

Polymers

View full text Add to dashboard Cite

Vitrimers are a new class of cross-linked materials that are capable of network topology alternation through the associative dynamic bond-exchange mechanism, which has recently been invented to solve the problem of conventional cross-linked materials, such as poor recyclability and healability. Thus far, the concept of vitrimers has been applied to various commercial polymers, e.g., polyesters, polylactides, polycarbonates, polydimethylsiloxanes, polydienes, polyurethanes, polyolefins, poly(meth)acrylates, and polystyrenes, by utilizing different compatible bond-exchange reactions. In this review article, the concept of vitrimers is described by clarifying the difference from thermoplastics and supramolecular systems; in addition, the term “associative bond-exchange” in vitrimers is explained by comparison with the “dissociative” term. Several useful functions attained by the vitrimer concept (including recyclability and healability) are demonstrated, and recent molecular designs of vitrimers are classified into groups depending on the types of molecular frameworks. This review specifically focuses on the vitrimer molecular designs with commercial polymer-based frameworks, which provide useful hints for the practical application of the vitrimer concept.

show abstract

“…These components can effectively absorb visible light and/or near infrared (NIR) light and convert optical energy into thermal energy, releasing heat that increases the LCN temperature above T LC‐iso and initiates mechanical deformation. [ 49–55 ] Compared with direct heating, the optical heating conserves all the appealing features of light stimulus, i.e., enabling localized and remote stimulation, and thus provides great convenience for achieving light‐driven locomotion of soft robots. Localized contraction/extension of an LCN strip occurs upon photothermally induced order–disorder transition if the optical heating is uniform throughout the region exposed to light.…”

Section: Actuation Stimulimentioning

confidence: 99%

Liquid Crystal Polymer‐Based Soft Robots

Xiao

Jiang

Zhao

2020

Advanced Intelligent Systems

View full text Add to dashboard Cite

Soft robots outperform the conventional robots on enhanced safety for human-machine interaction, environmental adaptability, and continuous deformation. In this blooming area of fundamental and technological importance, liquid crystal polymer networks and liquid crystal elastomers (referred to as LCNs) have emerged as one of the most valuable candidates for soft robots due to their complex, large, and reversible shape change capabilities. To date, much research effort, mainly regarding chemical synthesis, fabrication technologies and soft robot design, has been dedicated to LCN robotic systems to endow them with versatile and complex actions controlled by various stimuli. Herein, starting with the principle that governs the stimuli-responsiveness of LCNs, recent progress made in LCN soft robots is summarized while focusing on different robotic motions, such as grapping, walking, swimming, and oscillation. Especially, novel LCNs with intelligent functions such as reprocessability, reconfigurability, self-regulating behavior and associative learning capability, are highlighted. This article aims to provide significant insights into the design and development of LCN-based soft robots.

show abstract

Polydopamine nanoparticles doped in liquid crystal elastomers for producing dynamic 3D structures

Abstract: Achieving 3D structures that can be reversibly formed from dry 2D polymer films is useful for the development of suitable smart materials capable of converting an external stimulus into a mechanical response.

Cited by 104 publications

References 55 publications

Solvent-assisted programming of flat polymer sheets into reconfigurable and self-healing 3D structures

Solvent-assisted programming of flat polymer sheets into reconfigurable and self-healing 3D structures

Implantation of Recyclability and Healability into Cross-Linked Commercial Polymers by Applying the Vitrimer Concept

Liquid Crystal Polymer‐Based Soft Robots

Contact Info

Product

Resources

About