| |
Predicting the Effect of Dissolved Carbon Dioxide on the Glass Transition Temperature of Poly(Acrylic Acid)
The morphology and size of poly(acrylic acid) (PAA) particles produced by precipitation polymerization in supercritical CO2 (scCO2) depends on the glass transition temperature (Tg) of the polymer at reaction conditions. In this study, the use of the Sanchez–Lacombe equation of state (SL-EOS), in conjunction with Chow's equation, to predict the effect of CO2 pressure on the Tg of PAA was eval...
http://www.polymer.cn//ss/caoguiping/publicationsshow_2813.html |
| |
Simultaneous Measurement of Carbon Dioxide-Induced Swelling and Gas Sorption in Poly(methyl methacrylate) and Polystyrene
暂无
http://www.polymer.cn//ss/caoguiping/publicationsshow_1703.html |
| |
Shape complexity and fractality of fracture surfaces of nucleating agents impregnated isotactic polypropylene swelled with supercritical carbon dioxide
暂无
http://www.polymer.cn//ss/caoguiping/publicationsshow_1688.html |
| |
Roberts. Predicting the Effect of Dissolved Carbon Dioxide on the Glass Transition Temperature of Poly(Acrylic Acid)
暂无
http://www.polymer.cn//ss/caoguiping/publicationsshow_1680.html |
| |
Supercritical Carbon Dioxide Assisted Solid-State Grafting Process of Maleic Anhydride onto Polypropylene
The work reported in this paper aimed at exploring the advantages of using supercritical carbon
dioxide (scCO2) as an environmentally benign solvent and swelling agent for carrying out the
grafting process of maleic anhydride onto polypropylene in the solid state. The effects of scCO2
on the melting temperature and melting enthalpy of an isotactic polypropylene (iPP) were
investigated first in...
http://www.polymer.cn//ss/caoguiping/publicationsshow_1646.html |
| |
Supercritical Carbon Dioxide-Assisted Dispersion of Sodium Benzoate in Polypropylene and Crystallization Behavior of the Resulting Polypropylene
This work aimed at studying the efficiency of
the use of supercritical carbon dioxide (scCO2) as a swelling
agent to disperse sodiumbenzoate (NaBz), a nucleating agent,
in polypropylene (PP), on the one hand; and the crystallization
behavior of the resulting PP, on the other hand. Under scCO2,
the NaBz was uniformly dispersed in the PP at a nanometer
scale. The use of ethanol or acetone as a...
http://www.polymer.cn//ss/caoguiping/publicationsshow_1645.html |
| |
Preliminary Study on the Characteristics of Isotactic Polypropylene with Nucleating Agent Swollen by Supercritical Carbon Dioxide
Impregnation of isotactic polypropylene(iPP)with nucleating agent(NA21)using supercritical carbon
dioxide as the swelling agent at different temperature and pressure and its non-isothermal crystallization kinetics
were investigated．The results showed that NA21 was dispersed at a nanometer=scale in the PP matrix，resulting
in the formation of different types．of crystal phases of iPP and the en...
http://www.polymer.cn//ss/caoguiping/publicationsshow_1644.html |
| |
Effect of supercritical carbon dioxide-assisted nano-scale dispersion of nucleating agents on the crystallization behavior and properties of polypropylene
This work aims at using supercritical carbon dioxide (scCO2) to disperse a nucleating agent, sodium 2,2-methylene-bis (4,6-di-tert-butylphenyl)
phosphate, denoted asNA40, in an isotactic polypropylene (PP) on the nanometer scale and at studying the nucleating efficiency of the nano-dispersed
NA40 by differential scanning calorimeter (DSC) and polarized optical microscope (POM). The Avrami equati...
http://www.polymer.cn//ss/caoguiping/publicationsshow_1640.html |
| |
Emulsion-templated porous materials using concentrated carbon dioxide-in-water emulsions and inexpensive hydrocarbon surfactants
Supercrit. carbon dioxide is the most extensively studied supercrit. fluid (SCF) medium for polymn. reactions and org. transformations. This can be attributed to a list of advantages ranging from solvent properties to practical environmental as well as economic considerations. In addn., when CO2 is used for the synthesis and processing of porous materials addnl. advantages are also rea...
http://www.polymer.cn//ss/tanbien/publicationsshow_1538.html |
| |
Facile Fabrication of Nanocellular Block Copolymer Thin Films Using Supercritical Carbon Dioxide
A novel, facile, and reproducible method of fabricating nanocells in thin films (see Figure) has been developed using a fluorinated block copolymer with a supercritical carbon dioxide (scCO2) soluble block as a template. The nanocells have an average spacing of 34 nm and a number density of 9 X 10(10) cm-2. The size of nanocellular structures is readily tunable by changing the saturation pressure ...
http://www.polymer.cn//ss/lilei/publicationsshow_1468.html |
| |