Synthesis of thermo- and pH-sensitive polyelectrolyte brushes by combining thermo-controlled emulsion polymerization and photo-emulsion polymerization
نویسندگان
چکیده
منابع مشابه
Submicron polyethylene particles from catalytic emulsion polymerization.
Particles of linear polyethylene (M(n) = (2-3) x 10(3) g x mol(-)(1); M(w)/M(n) = 2-4) obtained by catalytic emulsion polymerization of ethylene possess a nonspherical, lentil-like shape with an average aspect ratio of ca. 10 and diameters from 30 to >300 nm, as determined by TEM and AFM. The particle structure results from a stacking of the lamellae along the one shorter axis of the lentils (i...
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INTRODUCTION Since many decades, polyethylene (PE) is one of the commodity polymers which has become ubiquitous because of its low price and good mechanical properties. Hence, the number of applications of the material is huge and many millions of tons are produced worldwide annually. However, PE has hardly played any role in the emerging field of nanotechnology so far. This is due to the probl...
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The determination of an emulsifier’s adsorption properties under conditions similar to those occurring during emulsion polymerization can provide important information to aid in the selection of the most appropriate surfactant for a given system. Results show that the latex particle size is dependent on the strength of emulsifier adsorption (∆Eads) at the particle/aqueous phase interface and is...
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Catalytic aqueous polymerization of butadiene by the cobalt catalyst system [Co(C8H13)(C4H6)]/CS2 affords colloidally stable latices of highly crystalline syndiotactic 1,2-polybutadiene (Tm ) 190 °C, ∆Hc ) 60 J/g, Mw ∼ 105 g/mol, 97% 1,2, 3% 1,4-cis). Catalyst modification with reagents containing electrophilic carbon atoms (e.g., aromatic formamides) strongly decreases polymer crystallinity (T...
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Emulsion polymerization reactions constitute complex, nonequilibrium systems in which there is strong interaction between polymers, monomers, and the colloidal structures that mediate the reactions. A novel and general method was sought to monitor emulsion polymerization reactions. Instrumentation and methods were hence developed here to achieve, for the first time, simultaneous monitoring of t...
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ژورنال
عنوان ژورنال: Chinese Journal of Polymer Science
سال: 2011
ISSN: 0256-7679,1439-6203
DOI: 10.1007/s10118-011-1050-x