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007. Simulated glass transition of poly(ethylene oxide) bulk and film: a comparative study
Stepwise cooling molecular dynamics (MD) simulations have been carried out on the bulk and film models for poly(ethylene oxide) (PEO) to understand glass transition of amorphous polymer films. Three types of properties—density, energy, and dynamics—are computed and plotted against the temperature for the two systems. It has been confirmed that all these properties can reveal&nbs...
http://www.polymer.cnt//ss/wuchaofu/publicationsshow_8297.html |
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004. Cooperative behavior of poly(vinyl alcohol) and water as revealed by molecular dynamics simulations
An aqueous poly(vinyl alcohol) (PVA) model has been extensively studied by using the molecular dynamics (MD) simulation method. The employed molecular and force field models are validated against the available data in the literature. In particular, the glass transition temperature (Tg) is determined from the specific volume versus temperature, which compares well with the experime...
http://www.polymer.cnt//ss/wuchaofu/publicationsshow_8294.html |
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Mechanical Properties and Creep Behavior of Poly(trimethylene terephthalate)/Mesoporous Silica Composites
Polym. Compos., 2015, 36(8), 1386-1393
ABSTRACT:
The poly(trimethylene terephthalate) (PTT) containing mesoporous silica (SBA-15) prepared by in-situ polymerization were used as the master batch in this work to be mixed with the commercial PTT to obtain PTT/mesoporous silica composites. The mechanical properties and viscoelastic behaviors such as creep and creep-recovery of the as-o...
http://www.polymer.cnt//ss/wudefeng/publicationsshow_8273.html |
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A novel high flux poly(trimethylene terephthalate) nanofiber membrane for microfiltration media
A novel high flux poly(trimethylene terephthalate) (PTT) nanofiber membrane for microfiltration media
was prepared and characterized in this study. The PTT nanofibers for the membrane preparation were
fabricated based on a high throughput, cost effective and environmental friendly method developed by
us. The PTT nanofiber membranes were then prepared by a wet-laid process. To enhance the mechanica...
http://www.polymer.cnt//ss/wangdongjiaoshou/publicationsshow_8158.html |
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Synthesis and Gene Delivery of Poly(amido amine)s with Different Branched Architecture
A general strategy to improve the transfection efficiency as well as lower the cytotoxicity for polycationic vectors has been developed. Through the polycondensation addition of N,N′-methylene bisacrylamide and 1-(2-aminoethyl)piperazine in a water/N,N-dimethylformamide cosolvent, a series of cationic poly(amido amine)s with same repeating units but different branched architecture ...
http://www.polymer.cnt//ss/zhouyongfeng/publicationsshow_8102.html |
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Quantitative Dependence of Crystallinity on Degree of Branching for Hyperbranched Poly[3-ethyl-3-(hydroxymethyl)oxetane]
A series of hyperbranched poly[3-ethyl-3-(hydroxymethyl)oxetane]
samples with various degrees of branching (DB) were adopted to investigate the
relationship between crystallinity and DB. The relative degree of crystallization
(DC) and DB were determined by x-ray diffraction (XRD) and 13C nuclear
magnetic resonance (13C-NMR) measurements, respectively. The corresponding
plot of DC versus DB shows q...
http://www.polymer.cnt//ss/zhouyongfeng/publicationsshow_8054.html |
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Preparation of robust poly(ε-caprolactone) hollow spheres with controlled biodegradability
This work reports a new type of poly(ε-caprolactone) (PCL) robust hollow sphere with controllable biodegradability, produced by grafting PCL shells from the surface of silica sphere cores and removing the template cores. Bis(ε-caprolactone-4-yl) (BCY) composed of two ε-caprolactone molecules was used as the crosslinker, which not only greatly strengthened the PCL hollow spheres but ...
http://www.polymer.cnt//ss/zhouyongfeng/publicationsshow_8048.html |
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PH-responsive nano-assemblies of amino poly(glycerol methacrylate)
PH-responsive nano-assemblies of amino poly(glycerol methacrylate)
http://www.polymer.cnt//ss/gaohui/publicationsshow_8003.html |
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Polyelectrolyte complex nanoparticles of amino poly(glycerol methacrylate)s and insulin
Polyelectrolyte complex nanoparticles of amino poly(glycerol methacrylate)s and insulin
http://www.polymer.cnt//ss/gaohui/publicationsshow_8001.html |
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Quaternized amino poly(glycerol-methacrylate)s for enhanced pDNA deliver,
Quaternized amino poly(glycerol-methacrylate)s for enhanced pDNA delivery
http://www.polymer.cnt//ss/gaohui/publicationsshow_7997.html |
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