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Article
Optimal conditions for the use of polyrotaxane as a cross-linker in preparing elastomers with high toughnesses
The effects of the cyclic molecules within polyrotaxanes moving over axial molecules serving as cross-linking points in a polymeric network preclude observation of the cyclic effects in polymer networks compos...
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Article
Open AccessNegative interfacial energies of dynamic polymer brush interfaces: a discussion of the free energy balance
Interfacial energy is an important physical parameter for describing interfacial properties. However, quantifying the interfacial energy of a polymer–liquid interface is extremely difficult because numerous po...
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Article
Open AccessA neuromechanical model for Drosophila larval crawling based on physical measurements
Animal locomotion requires dynamic interactions between neural circuits, the body (typically muscles), and surrounding environments. While the neural circuitry of movement has been intensively studied, how the...
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Article
Viscoelastic relaxation attributed to the molecular dynamics of polyrotaxane confined in an epoxy resin network
The molecular dynamics of polyrotaxane (PR) dispersed homogeneously in a cross-linked epoxy resin were studied using dynamic mechanical analysis (DMA) and pulsed NMR spectroscopy. In PR, poly-ε-caprolactone (P...
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Article
Ionic transport and mechanical properties of slide-ring gel swollen with Mg-ion electrolytes
We applied a slide-ring (SR) gel to a Mg2+ ion gel electrolyte and clarified the electrical and mechanical properties in order to achieve a Mg2+ ion gel electrolyte with both sufficient mechanical strength and hi...
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Article
Efficient mechanical toughening of polylactic acid without substantial decreases in stiffness and transparency by the reactive grafting of polyrotaxanes
A mechanical tough polylactic acid (PLA) that substantially retains its stiffness and transparency was created through reaction with a polyrotaxane derivative. A graft polyrotaxane (GPR), composed of a linear ...
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Chapter
Solar Photovoltaic Market Adoption: Dilemma of Technological Exploitation vs Technological Exploration
Initial policy-induced market growth in Europe since the 1990s promoted not only mass-production industry, but also process innovation particularly in Asia. Currently, Asia accounts for about 85% of the global...
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Article
Open AccessNovel Slide-Ring Material/Natural Rubber Composites with High Dam** Property
A novel class of polymers called “slide-ring” (SR) materials with slideable junctions were used for high dam** composites for the first time. The SR acts as the high dam** phase dispersed in the natural ru...
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Article
Miscibility, intramolecular specific interactions and mechanical properties of a DGEBA based epoxy resin toughened with a sliding graft copolymer
The “sliding graft copolymer” (SGC), in which many linear poly-ɛ-caprolactone (PCL) side chains are bound to cyclodextrin rings of a polyrotaxane (PR), was prepared and employed to toughen diglycidyl ether of bis...
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Reference Work Entry In depth
Topological Gels
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Article
Open AccessExtremely stretchable thermosensitive hydrogels by introducing slide-ring polyrotaxane cross-linkers and ionic groups into the polymer network
Stimuli-sensitive hydrogels changing their volumes and shapes in response to various stimulations have potential applications in multiple fields. However, these hydrogels have not yet been commercialized due t...
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Living Reference Work Entry In depth
Topological Gels
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Article
Novel entropic elasticity of polymeric materials: why is slide-ring gel so soft?
We have recently developed a slide-ring gel that is different from physical and chemical gels by crosslinking polyrotaxane, a necklace-like supramolecule. Slide-ring gel, consisting of movable crosslinks and f...
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Article
The static structure of polyrotaxane in solution investigated by contrast variation small-angle neutron scattering
Polyrotaxane (PR) possesses a supramolecular structure in which cyclic molecules are threaded into an axial polymer. In this study, the static structure of PR dissolved in a good solvent was investigated using...
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Article
Novel Cross-Linking Concept of Polymer Network: Synthesis, Structure, and Properties of Slide-Ring Gels with Freely Movable Junctions
We have recently developed a novel type of gel called the slide-ring gel or topological gel that is different from physical and chemical gels by using the supramolecular architecture with topological characterist...
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Chapter
Structure and Function of Polymeric Inclusion Complex of Molecular Nanotubes and Polymer Chains
Various organic supramolecules with unique structures have attracted great interests of many scientists.1-3 Harada et al. prepared a polyrotaxane supramolecule in which cyclodextrin (CD) molecules of cyclic form ...
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Article
Circular Dichroism Study of the Inclusion-Dissociation Behavior of Complexes between a Molecular Nanotube and Azobenzene Substituted Linear Polymers
We have investigated the inclusion properties of molecular nanotubes composed ofcrosslinked α-cyclodextrin. Induced circular dichroism was used to probe theformation and dissociation of complexes between the n...
