Aqueous Dispersions of Ethylene Copolymers and Their Laponite Clay Nanocomposites from Free-Radical Dispersion Polymerization

2019 ◽  
Vol 52 (11) ◽  
pp. 4270-4277 ◽  
Author(s):  
Tobias O. Morgen ◽  
Hendrik Luttikhedde ◽  
Stefan Mecking
Keyword(s):  
Free Radical ◽  
Dispersion Polymerization ◽  
Clay Nanocomposites ◽  
Ethylene Copolymers ◽  
Aqueous Dispersions

Preparation of Poly(MAA-g-EG) Hydrogel Nanoparticles by a Thermally-Initiated Free Radical Dispersion Polymerization

2007 ◽  
Vol 7 (2) ◽  
pp. 626-633 ◽  
Author(s):  
Liandong Deng ◽  
Xiaohua He ◽  
Aigui Li ◽  
Qiuxia Yang ◽  
Anjie Dong
Keyword(s):  
Free Radical ◽  
Dispersion Polymerization ◽  
Swelling Behavior ◽  
Poly Ethylene Glycol ◽  
Hydrogel Nanoparticles ◽  
Stabilizer Concentration ◽  
Effects Of Ph ◽  
Poly Ethylene ◽  
Reaction Media ◽  
Polymerization Method

Poly(methacrylic acid-grafted-poly(ethylene glycol)) (P(MAA-g-EG)) hydrogel nanoparticles (HNPs) were prepared by a thermally-initiated free radical dispersion polymerization method. The effects of various reaction parameters on the preparation of HNPs were investigated, including the quantity of monomer, temperature, initiator dosage, crosslinker dosage, and co-stabilizer concentration. The reaction temperature at 75 °C was found to be suitable for preparing stable and small P(MAA-g-EG) HNPs. By adding a little amount of polyvinyl alcohol in the reaction media, P(MAA-g-EG) HNPs with narrow size distribution could be obtained. The effects of pH and the crosslinker dosage on the equilibrium swelling behavior of P(MAA-g-EG) HNPs were also studied. The P(MAA-g-EG) HNPs perform pH-responsive swelling behavior, which is strongly influenced by the crosslinker dosage.

Living Free-Radical Dispersion Polymerization of Styrene

1998 ◽  
Vol 31 (9) ◽  
pp. 2883-2888 ◽  
Author(s):  
Laurence I. Gabaston ◽  
Richard A. Jackson ◽  
Steven P. Armes
Keyword(s):  
Free Radical ◽  
Dispersion Polymerization

Preparation and characterization of polystyrene-clay nanocomposites by free-radical polymerization

2002 ◽  
Vol 85 (7) ◽  
pp. 1370-1377 ◽  
Author(s):  
Chen-Rui Tseng ◽  
Jeng-Yue Wu ◽  
Hsin-Yi Lee ◽  
Feng-Chih Chang
Keyword(s):  
Free Radical ◽  
Radical Polymerization ◽  
Free Radical Polymerization ◽  
Clay Nanocomposites

Polymer–clay nanocomposites: Free-radical grafting of polyacrylamide onto organophilic montmorillonite

2010 ◽  
Vol 46 (9) ◽  
pp. 1844-1853 ◽  
Author(s):  
Y. Mansoori ◽  
S.V. Atghia ◽  
M.R. Zamanloo ◽  
Gh. Imanzadeh ◽  
M. Sirousazar
Keyword(s):  
Free Radical ◽  
Clay Nanocomposites ◽  
Organophilic Montmorillonite
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