Chapter 4. PMMA-based Montmorillonite Nanocomposites by Soap-free Emulsion Polymerization

2010 ◽  
pp. 78-110 ◽  
Author(s):  
King-Fu Lin ◽  
Keng-Jen Lin
Keyword(s):  
Emulsion Polymerization ◽  
Soap Free Emulsion Polymerization ◽  
Montmorillonite Nanocomposites

Preparation of Raspberry-Like Polymer/Silica Composite Particles through Cationic Soap-Free Emulsion Polymerization

2012 ◽  
Vol 476-478 ◽  
pp. 1408-1411
Author(s):  
Xin Fan ◽  
Qiu Ju Qin ◽  
Xiu Fang Wen ◽  
Jiang Cheng ◽  
Zhuo Ru Yang
Keyword(s):  
Emulsion Polymerization ◽  
Silica Content ◽  
Silica Particles ◽  
Vital Role ◽  
Silica Sol ◽  
Electrostatic Attraction ◽  
Composite Particles ◽  
Silica Composite ◽  
Soap Free Emulsion Polymerization

In this paper raspberry-like composite particles were prepared via cationic soap-free emulsion polymerization with silica sol as stabilizer and 2-(methacryloyl) ethyltrimethylammonium chloride (MTC) as cationic auxiliary monomer. According to the TGA and TEM results we could find that the electrostatic attraction supplied by MTC played a vital role in the adsorption of silica particles as well as the generation of raspberry-like morphology. The silica content and appearance of composite particles were found to be improved with the increasing amount of silica sol and MTC while varied little with changes of AIBA amount.

Variable morphologies of poly(vinyl acetate)–montmorillonite nanocomposites obtained by emulsion polymerization in the presence of poly(vinyl pyrrolidone)

e-Polymers ◽  
2006 ◽  
Vol 6 (1) ◽  
Author(s):  
Mihai-Cosmin Corobea ◽  
Violeta Uricanu ◽  
Dan Donescu ◽  
Szabolcs Deladi ◽  
Constantin Radovici ◽  
...  
Keyword(s):  
Emulsion Polymerization ◽  
Vinyl Acetate ◽  
Polymer Matrix ◽  
The Other ◽  
Vinyl Pyrrolidone ◽  
Clay Concentration ◽  
End Products ◽  
Poly Vinyl Pyrrolidone ◽  
Montmorillonite Nanocomposites

AbstractNanocomposites containing poly(vinyl acetate) and montmorillonite (MMT) were prepared using a one-batch emulsion polymerization recipe, assisted by poly (vinylpyrrolidone). The relative clay concentration with respect to the other reaction partners influences drastically the morphological units in the end-products. For low [MMT], well-defined, spherical PVAc particles are formed. At the other extreme, for high [MMT], production of polymeric, water-swollen aggregates is favored. Depending on the MMT/PVP ratio, the clay will be dispersed in the final polymer matrix in variable forms, from individual platelets to agglomerates of reformed tactoids.

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