| |
Kinetics of acrylate emulsion polymerization containing hydrophilic hydroxyl monomer in the presence of nano-SiO2 particles
Kinetic of acrylic emulsion polymerization containing hydrophilic hydroxyethyl methacrylate (HEMA) and acrylic acid (AA) in the presence of nano-SiO2 was investigated. The influence of temperature, emulsifier level, hydroxyl monomer content and the level of nano-SiO2 on monomer conversion, polymerization rate (Rp) and the particle size was investigated. The results showed that the presence of nano...
http://www.polymer.cn//ss/zhangfaai/publicationsshow_1715.html |
| |
Effects of hydrophilic monomer types on poly(styrene-acrylate)/montmorillonite nanocomposites made by in-site emulsion polymerization
Organic modified montmorillonite (OMMT) was made of pristine montmorillonite (MMT) treated with cetyl trimethylammonium bromide (CTAB). Two kinds of nanocomposites, poly(styrene-acrylate)/MMT (P(S-A)/MMT) and poly(styrene-acrylate)/OMMT (P(S-A)/OMMT) were prepared from styrene (St), hydrophilic acrylate monomer, and MMT (or OMMT) by in-site emulsion polymerization. Effects of different monomers, b...
http://www.polymer.cn//ss/zhangfaai/publicationsshow_1714.html |
| |
The Effect of Nano-SiO2 Colloid on Soap-free Emulsion Polymerization of Methyl Methacrylate and Hydroxyethyl Methacrylate
Soap-free emulsion polymerization of methyl methacrylate (MMA) and hydroxyethyl methacrylate (HEMA) was carried out in the presence of colloidal nano-SiO2 particles. The effect of nano-SiO2 level on the monomer conversion, polymerization rate (Rp), and emulsion stability was investigated. The viscosity, particle size distribution of the emulsions, surface tension, and ionic conductivity of these s...
http://www.polymer.cn//ss/zhangfaai/publicationsshow_1713.html |
| |
PMMA - mesocellular foam silica nanocomposites prepared through batch emulsion polymerization and compression molding
PMMA - mesoporous silica nanocomposites were prepared for the first time through in-situ batch emulsion polymerization of methyl methacrylate in the presence of large pore MSU-F silica with a mesocellular foam structure (24.8 nm average cavity size) and subsequent compression molding of the polymer-silica nanoparticle mixtures. For composites containing 5.0 wt % silica, the onset decompositi...
http://www.polymer.cn//ss/zhangfaai/publicationsshow_1708.html |
| |
Synthesis of Emulsion-Templated Poly(acrylamide) Using CO2-in-Water Emulsions and Poly(vinyl acetate)-Based Block Copolymer Surfactants.
We present here a simple and generic method for producing inexpensive and biodegradable polymer surfactants for use in supercrit. CO2. Low mol. wt. (Mw<7000 g/mol) hydroxyl-terminated poly(vinyl acetate) (PVAc-OH) was synthesized using optimized reaction conditions and iso-Pr ethanol (IPE) as the chain transfer agent. Oligomeric PVAc-OH (OVAc-OH, Mw<3000 g/mol) was then obtained ...
http://www.polymer.cn//ss/tanbien/publicationsshow_1553.html |
| |
CO2-in-Water Emulsion-Templated Poly(vinyl alcohol) Hydrogels Using Poly(vinyl acetate)-Based Surfactants.
We present here a methodol. to produce highly porous cross-linked hydrogel materials by templating concd. CO2-in-water (C/W) emulsions. Poly(vinyl alc.) (PVA), blended PVA/PEG, and naturally derived chitosan materials were produced via this route. The technique can be carried out at moderate temps. and pressures (25, <120 bar) using inexpensive hydrocarbon surfactants such as PVAc-based b...
http://www.polymer.cn//ss/tanbien/publicationsshow_1551.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 |
| |
Anchoring of Polyacrylate onto Silica and Formation of Polyacrylate/Silica Nanocomposite Particles via in-situ Emulsion Polymerization
Polyacrylate/silica nanocomposite latex particles
were prepared by in situ emulsion polymerization of acrylate
monomers initiated by 2,2′-azobis(2-amidinopropane)-
dihydrochloride (AIBA) adsorbed by silica nanoparticles.
The anchoring of polyacrylate (ACR) onto silica nanoparticles
was achieved through the physical absorption and
chemical grafting reaction. The elution and HF etching
...
http://www.polymer.cn//ss/qidongming/publicationsshow_1298.html |
| |
12th Polymers for Advanced Technology Conference (PAT 2013) - Berlin
http://www.polymer.cn/Exhibition/meeting/meeting_content_10492.html |
| |
Symposium on Innovative Polymers for Controlled Delivery (SIPCD)
http://www.polymer.cn/Exhibition/meeting/meeting_content_10301.html |
| |