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Tuning the glass transition temperatures of polymers by up to 100℃: equivalence of confinement effects in multilayer films and polymer blends
The glass transition of a polymer occurs when, upon cooling, chains are no longer able to adopt equilibrium conformations on the experimental time scale. This transition from a disordered, rubbery or liquid equilibrium state to&nb...
http://www.polymer.cn/research/dis_info16769 |
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Phosphonate functionalized 4,4‘-bis(n-carbazolyl)biphenyl: turning the single-layer device performance through hole- to electron-dominated transition
During the past decade, phosphorescent organic light-emitting diodes have exhibited prominent potential in flat-panel display and solid-state lighting applications.
http://www.polymer.cn/research/dis_info16613 |
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Photocatalytic preparation of graphene and its photothermal conversion effect on phase transition of PNIPAAm hydrogels
关键字：graphene; photocatalytic; PNIPAAm; composite; hydrogel
Herein we obtained a photocatalytic reduced graphene oxide (RGO) using tetrapod-like zinc oxide (T-ZnO) as a photocatalyst for the first time. Atomic force microscopic (AFM) and transmission electron microscopy (TEM) results confirmed that&...
http://www.polymer.cn/research/dis_info14020 |
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Relation between smectic structure formation and glass transition in stretched poly(butylene terephthalate)
Poly(butylene terephthalate) (PBT) is a semi-crystalline polyester, and used extensively in many engineering materials. PBT has two triclinic crystalline forms, α-form and β-form, and a smectic liquid crystalline structure.
http://www.polymer.cn/research/dis_info12973 |
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Effects of Nanoscale Confinement on Glass Transition Temperature, Physical Aging, and Diffusion in Confined Polymer Films and Nanocomposites
Here, we describe key results from fluorescence-based studies that show how interfaces (polymer-air, polymer-substrate, polymer-nanofiller) perturb properties and the length scales, often greater than 100 nm, over which interfacial perturbations can&...
http://www.polymer.cn/research/dis_info12942 |
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Effect of Ionic Liquid Counterions on the Glass Transition, Viscoelasticity and Ion Conduction in Single-Ion Conducting Ionomers
Since the pioneering ionic conductivity study of poly(ethylene oxide) with dissolved salts reported by Wright in 1973, polymer electrolytes have been studied extensively.
http://www.polymer.cn/research/dis_info12924 |
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Phase transition of 5CB/DDAB/Water microemulsion: a real time investigation by means of dielectric spectroscopy
Liquid Crystal (LC) Microemulsion received much attention in the past several years. Early study on the phase behavior of LC microemulsion showed that a new phase, “transparent nematic (TN)” phase, is formed during phase transit...
http://www.polymer.cn/research/dis_info12907 |
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Temperature- and Solvent-Induced Volume Phase Transition of Cross-linked Poly(N-isopropylacrylamide) Gels inWater and Mixed Solvents ofWater and Methanol
Since the experimental discovery by Tanaka[1] in 1978, gels exhibiting volume phase transition have been studied extensively from a theoretical and experimental point of view.
http://www.polymer.cn/research/dis_info12873 |
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Synthesis and characterization of transition metal-containing polyamides
关键字：transition metal, coordination complex, polycondensation, polyamide
Well-characterized metal-containing polymers have led to a rapidly expanding interest in their properties and potential applications. The incorporation of metal atoms into synthetic polymer chains leads to macromolecular structures in which meta...
http://www.polymer.cn/research/dis_info11680 |
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High glass transition and optical transparency of novel polyimide containing 4-tert-butyltoluene moiety
关键字：Polyimides,Solubility,Optical transparency,Dielectric constant
Novel polyimide (PI) 3 was prepared from 4,4’-diaminodiphenyl-4”-tert-butyltoluene and 3,3’,4,4’-biphenyltetracarboxylic dianhydride via a one-step high-temperature polycondensation. The obtained PI 3 showed good solubility in many common solvents such as&...
http://www.polymer.cn/research/dis_info11600 |
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