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【63 Advanced Materials Interfaces】 Programmable actuation of porous poly(ionic liquid) membranes by aligned carbon nanotubes
A porous composite membrane, combined poly(ionic liquids) with aligned carbon nanotubes that shows anisotropic actuation toward organic solvent is developed. The membrane actuator shows rapid and reversible actuation in response to acetone vapor as well as improved conductivity. These properties allow the composite membrane to be organic solvent‐induced actuator as well as a power switch.
http://www.polymer.cn//ss/gongjiang_hust/publicationsshow_13288.html |
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[Nature Chemistry] Photoswitching of Glass Transition Temperatures of Azobenzene-containing Polymers Induces Reversible Solid-to-liquid Ttransitions
The development of polymers with switchable glass transition temperatures (Tg) can address scientific challenges such as the healing of cracks in high-Tg polymers and the processing of hard polymers at room temperature without using plasticizing solvents. Here, we demonstrate that light can switch the Tg of azobenzene-containing polymers (azopolymers) and induce reversible solid-to-liquid transi...
http://www.polymer.cn//ss/zhouhongwei/publicationsshow_13145.html |
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(Macromolecules) Aggregation-Induced Emission Luminogen-Functionalized Liquid Crystal Elastomer Soft Actuators
An aggregation-induced emission (AIE)-active liquid crystal elastomer (LCE) soft actuator is fabricated through chemical incorporation of a four-alkenylarmed tetraphenylethene-core cross-linker into a main-chain LCE matrice by a facile in situ two-step acyclic diene metathesis (ADMET) polymerization/cross-linking method. The LCE sample is endowed with the ability to readily tune the photolumines...
http://www.polymer.cn//ss/yangh/publicationsshow_13139.html |
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(J. Mater. Chem. C) A Cut-and-Paste Strategy towards Liquid Crystal Elastomers with Complex Shape Morphing
Nowadays, with the rapid progress in soft robotics and aerospace technology, novel soft actuator materials with reversible and complex shape morphing capabilities, such as helical curling, buckling, accordion-like folding, self-oscillating, waving and other three-dimensional motion modes, are highly desirable. In this manuscript, we report a new cut-and-paste method to construct liquid crystal e...
http://www.polymer.cn//ss/yangh/publicationsshow_13138.html |
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Molecular-weight dependence of phase structure and viscosity in a liquid crystalline polyester with strong π–π interaction
In this article, the molecular-weight dependence of the phase structure, rheological behaviour and thermal stability of a main-chain liquid crystalline polyester (PBDPS) with strong π–π interaction was investigated in details by differential scanning calorimetry, polarising optical microscopy, wide-angle X-ray diffraction, dynamic oscillatory rheological measurements and thermogravimetric ana...
http://www.polymer.cn//ss/yangrong/publicationsshow_13134.html |
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Molecular-Weight Dependence of Nucleation Effect of a Liquid Crystalline Polyester β-Nucleating Agent for Isotactic Polypropylene
Unlike low-molecular-weight inorganic or organic nucleating agents (NAs), the physical properties, including phase transition and rheological behaviors, of polymeric NAs are greatly influenced by molecular weight. In this paper, the molecular-weight dependence of the β-nucleation behaviors of a polymeric NA (a main-chain liquid crystalline (LC) polyester, PBDPS) was studied in detail. The nucle...
http://www.polymer.cn//ss/yangrong/publicationsshow_12903.html |
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Robust Fabrication of Nonstick, Noncorrosive, Conductive Graphene-Coated Liquid Metal Droplets for Droplet-based, Floating Electrodes
Nontoxic liquid metals (conductive materials in a liquid state at room temperature) are an emerging class of materials for applications ranging from soft electronics and robotics to medical therapy and energy devices. Their sticky and corrosive properties, however, are becoming more of a critical concern for circuits and devices containing other metals as these are easily destroyed or contaminated...
http://www.polymer.cn//ss/xczhou/publicationsshow_12901.html |
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Multitemperature Memory Actuation of a Liquid Crystal Polymer Network over a Broad Nematic–Isotropic Phase Transition Induced by Large Strain
The shape change of a polymer actuator based on liquid crystal network (LCN) generally occurs over a relatively sharp LC-isotropic phase transition. Reported herein is the discovery of an unusual phenomenon and the enabled actuation control for LCN. The smectic phase of a LCN with mesogenic moieties on the chain backbone can be suppressed by high elongation of the specimen, which gives rise to a...
http://www.polymer.cn//ss/yangrong/publicationsshow_12699.html |
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Nonisothermal Crystallization, Melting Behaviors, and Mechanical Properties of Isotactic Polypropylene Nucleated with a Liquid Crystalline Polymer
The nonisothermal crystallization and melting behaviors of isotactic polypropylene (iPP) nucleated by a mainchain liquid crystalline polyester (poly(4,4′-bis(6-hydroxyhexyloxy)biphenyl phenylsuccinate), PBDPS) as a β-nucleating agent have been investigated by differential scanning calorimetry (DSC), wide-angle X-ray diffraction (WAXD), and polarizing optical microscopy (POM). The effect of PBD...
http://www.polymer.cn//ss/yangrong/publicationsshow_12643.html |
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In Situ Synthesis of Imidazolium-Crosslinked Ionogels via Debus–Radziszewski Reaction Based on PAMAM Dendrimers in Imidazolium Ionic liquid
This study reports a remarkably facile method to synthesize novel ionogels
with imidazolium cycle crosslinks based on polyamidoamine (PAMAM)
dendrimers via one-pot, modified Debus–Radziszewski reaction in ionic liquid
1-ethyl-3-methylimidazolium acetate ([EMIM][OAc]). High room temperature
ionic conductivity (up to 6.8 mS cm?1) is achieved, and more remarkably, it
can still excee...
http://www.polymer.cn//ss/hongzansong/publicationsshow_12590.html |
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