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Photonic Crystals with a Reversibly Inducible and Erasable Defect State Using External Stimuli
The controlled introduction of artificial extrinsic defects is critical to achieve the functions of photonic crystals. Smart defects capable of responding to external stimuli lead to more advanced applications. Here we report a microgel colloidal crystal with a defect state which could be induced and erased reversibly by external stimuli. The crystal was assembled from PNIPAM microgel and P(NIPA...
http://www.polymer.cn//ss/zhangyongjun/publicationsshow_10095.html |
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2H Solid-State NMR Analysis of the Dynamics and Organization of Water in Hydrated Chitosan
Understanding
water-biopolymer interactions, which strongly affect the function and
properties of biopolymer-based tissue engineering and drug delivery materials,
remains a challenge. Chitosan, which is an important biopolymer for the
construction of artificial tissue grafts and for drug delivery, has attracted
extensive attention in recent decades,
where neutralization
with an alkali solutio...
http://www.polymer.cn//ss/sunpingchuan/publicationsshow_9175.html |
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Dynamic Evolution in PVPh/PEO Blend Studied by Solid-State NMR
13C CODEX variable-temperature solid-state NMR (SSNMR) technique was used to investigate the evolution of segmental dynamics in PVPh/PEO polymer blend within a wide range of temperature. It was found that the glass transition begins with the presence of remarkable slow motions of both the PVPh backbone segments and side groups, and ends when the CODEX signal intensity of segmental slow motion reac...
http://www.polymer.cn//ss/sunpingchuan/publicationsshow_9033.html |
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Measuring the thermophysical properties of porous fibrous materials with a new unsteady-state method
In this article, the authors first introduced a theoretical model dealing with unsteady-state heat conduction in porous fabric to assess the effects due to local convection during the testing. A few important issues are analyzed including the criterion for local thermal equilibrium in the fibrous materials and the confidence time region (t min–t max) during measuring process. The influence due to...
http://www.polymer.cn//ss/qulijun/publicationsshow_8893.html |
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Effect of Solid-state Shear milling on Structure and Properties of HDPE/UHMWPE blends
ABSTRACT: The structure and properties of HDPE/UHMWPE blends prepared through a pan-milling reactor in solid state at ambient temperature were compared with the blends made by melt mixing. The changes of structure and properties of the blends were investigated by FTIR, melt flow index, mechanical properties, dynamic rheological measurement, DSC, and WAXD. DSC measurement illustrated...
http://www.polymer.cn//ss/zouhuawei/publicationsshow_6471.html |
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Effect of Solid-state Stress Induced Reaction on Morphology and Structure of Metallocene Polyethylene
Metallocene-catalyzed polyethylene (mPE)
powder was prepared through a mechanochemical reactor in solid state at ambient
temperature. The changes of morphology and structure of mPE were investigated
by SEM, FTIR, DSC, viscosimetry, GPC, WAXD, dynamic rheometer, and high
pressure capillary rheometer methods. FTIR measurement illustrated that the
branching degree of mPE increased after mech...
http://www.polymer.cn//ss/zouhuawei/publicationsshow_6452.html |
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Tuning solid-state fluorescence of pyrene derivatives via a cocrystal strategy
1-Acetyl-3-(4-methoxyphenyl)-5-(1-pyrenyl)-pyrazoline (AMPP) was synthesized and crystallized to yield three types of crystals with different host–guest structures: AMPP crystal (I), AMPP–phenol (II) and AMPP–(2-naphthol) cocrystals (III). Twisted π-conjugated structures and different stacking modes of AMPP molecules were found in the three crystals. In crystal I, pyrene fluorophores adopt a f...
http://www.polymer.cn//ss/wangml/publicationsshow_5387.html |
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Characterization of the Mobility and Reactivity of Water Molecules on TiO2 Nanoparticles by 1H Solid-State NMR
Characterization of the Mobility and Reactivity of Water Molecules on TiO2 Nanoparticles by 1H Solid-State NMR
http://www.polymer.cn//ss/wxlthefirst/publicationsshow_5240.html |
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Rheology and thermal transition state of polyvinyl alcohol–cassava starch blends
Rheology and thermal transition state of polyvinyl alcohol–cassava starch blends
http://www.polymer.cn//ss/sunzhaoyan/publicationsshow_4539.html |
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“Wet-State” Mechanical Properties of Three-Dimensional Polyester Porous Scaffolds
Porous poly(d,l-lactic-co-glycolic acid) (PLGA) scaffolds under a simulated physiological environment were investigated to estimate their “true” mechanical properties, with emphasis on the effect of “wet-state” on the compressive
behaviors. The effect of the history of ethanol sterilization was also investigated. The studies were focused upon the “wet-state” me...
http://www.polymer.cn//ss/wulinbo/publicationsshow_928.html |
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