Regional Shape Control of Strategically Assembled Multishape Memory Vitrimers

Pei, Zhiqiang; Yang, Yang; Chen, Qiaomei; Wei, Yen; Ji, Yan

doi:10.1002/adma.201503789

Cited by 235 publications

(180 citation statements)

References 39 publications

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“…Vitrimers are not traditional cross‐linked polymer networks, in which dynamic chemical bonds are introduced, leading to rearrange their topology via thermally triggered exchange reactions without changing the cross‐link density . Thus, dynamic chemical bonds not only realize the reprocessing of thermosetting material but also endow it with some excellent properties, such as multishape memory, healing, and surface welding, which is an amazing breakthrough for welding technology of thermosets. However, most of the vitrimers require some special processing conditions that hindered its practical application during the surface welding in order to get a perfect effect of contact between the surfaces.…”

Section: Introductionmentioning

confidence: 99%

“…However, most of the vitrimers require some special processing conditions that hindered its practical application during the surface welding in order to get a perfect effect of contact between the surfaces. For instance, an external force within the range of hundreds to thousands of kilopascal is needed to obtain a good interface welding . Additionally, in some vitrimer systems, solvent must be added to achieve an almost perfect welding .…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Carbon Nanotubes‐Polyurethane Vitrimer Nanocomposites with the Ability of Surface Welding Controlled by Heat and Near‐Infrared Light

Yan

Zhao

Wang

et al. 2017

Macro Chemistry & Physics

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Welding technology of polymer materials, serving as an exceedingly good tactics to save materials, reduce cost, and reduce material loss, is only extensively applied in thermoplastic materials for the moment. Recently, a new class of polymer, known as vitrimer, has attracted the eye of researchers because it realizes the reprocessing and reshape of thermosets and possesses many excellent functions, such as multishape memory, healing, and surface welding. Among these, the vitrimer makes the surface welding of thermosetting material possible. In this paper, carbon nanotubes‐polyurethane vitrimer nanocomposites with the capability of surface welding controlled by heat and near‐infrared (NIR) light are successfully prepared. Here, the effects of surface welding are characterized by lap shear tests and optical microscope. In addition, from the control experiments, it is found that the shear strength of the light‐welding sample under NIR illumination for 1 min is greater than that of the heat‐welding sample at 110 °C for 10 min. Furthermore, thermosetting polyurethane has been applied in many fields, and it is hoped that the findings, especially near‐infrared welding technology, will make some contributions for welding technology of polymer.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Carbon Nanotubes‐Polyurethane Vitrimer Nanocomposites with the Ability of Surface Welding Controlled by Heat and Near‐Infrared Light

Yan

Zhao

Wang

et al. 2017

Macro Chemistry & Physics

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“…13,40 As our supramolecular hydrogels can respond to two independent stimuli, it is envisioned that they have triple shape memory abilities. As a simple example shown in Fig.…”

Section: Resultsmentioning

confidence: 99%

Stretchable supramolecular hydrogels with triple shape memory effect

et al. 2016

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“…Self-healing polymers or SMPs have the capacity to recover and remedy the damaged material to its original shape or structural features as the function of the exerted external stimuli (Pei et al 2016). Figure 3 shows the reversible equilibrium in polymer materials to attain selfhealing by lowering their molecular mass and viscosity in which the defects can be easily mended in the re-polymerization processes (Blaiszik et al 2010;Meng and Jinlian 2010).…”

Section: Self-healing Polymer Materialsmentioning

confidence: 99%

Transformation of food packaging from passive to innovative via nanotechnology: concepts and critiques

et al. 2016

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In recent decades, there is a global advancement in manufacturing industry due to increased applications of nanotechnology. Food industry also has been tremendously changing from passive packaging to innovative packaging, to cope with global trends, technological advancements, and consumer preferences. Active research is taking place in food industry and other scientific fields to develop innovative packages including smart, intelligent and active food packaging for more effective and efficient packaging materials with balanced environmental issues. However, in food industry the features behind smart packaging are narrowly defined to be distinguished from intelligent packaging as in other scientific fields, where smart materials are under critical investigations. This review presents some scientific concepts and features pertaining innovative food packaging. The review opens new research window in innovative food packaging to cover the existing disparities for further precise research and development of food packaging industry.

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Regional Shape Control of Strategically Assembled Multishape Memory Vitrimers

Abstract: Hot-pressing shape memory vitrimers lead to multishape memory, multifunctionality, easy reconfiguration, and the possibility of mass production of arbitrary smart structures.

Cited by 235 publications

References 39 publications

Carbon Nanotubes‐Polyurethane Vitrimer Nanocomposites with the Ability of Surface Welding Controlled by Heat and Near‐Infrared Light

Carbon Nanotubes‐Polyurethane Vitrimer Nanocomposites with the Ability of Surface Welding Controlled by Heat and Near‐Infrared Light

Stretchable supramolecular hydrogels with triple shape memory effect

Transformation of food packaging from passive to innovative via nanotechnology: concepts and critiques

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