Preparation of copolymers of acrylic acid and 3-methacryloxypropyl-trimethoxysilane by the method of emulsion copolymerization

AbstractPoly(methyl methacrylate-acrylic acid-ethylene glycol dimethacrylate) copolymer particles abbreviated as P(MMA-AA-EGDM) copolymer particles were prepared by soap-free emulsion copolymerization. The concentration of carboxyl group on/near the surface of particles increased with the increase in acrylic acid (AA) content in the recipe. The carboxyl groups were reacted with amine nucleophiles such ethylene diamine and 1,6-diaminohexane through preactivation with dicyclohexyl carbodiimide as a coupling agent. The modified particles were characterized by electron micrographs and FTIR spectral analysis. Adsorption behaviours of some biomolecules were measured to have idea about=-0 the polarity of the particles surface

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Preparation and Properties of Nanocomposites Based on Poly(Vinyl acetate) and Montmorillonite Organized with Acrylic Acid

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.335-336.3 ◽

2011 ◽

Vol 335-336 ◽

pp. 3-11

Author(s):

Jun Wang

Keyword(s):

Acrylic Acid ◽

Vinyl Acetate ◽

Differential Scanning Calorimetric ◽

X Ray Diffraction ◽

Covalent Bonds ◽

Emulsion Copolymerization ◽

Fourier Transformation Infrared Spectroscopy ◽

Ft Ir ◽

Vinyl Group

The nanocomposites of poly(vinyl acetate)/montmorillonite (PVAc/MMT) were prepared using vinyl acetate and organically modified alkaline calcium base montmorillonite (MMT) by in situ emulsion copolymerization. The organic modification was acrylic acid including terminal reactive vinylic group. The samples were characterized using fourier transformation infrared spectroscopy (FT-IR), X-ray diffraction (XRD). Thermal properties of the PVAc/MMT films were studied by thermogravimetric (TG) and differential scanning calorimetric (DSC). The FT-IR results indicated that the vinyl group on the surface of the vinyl MMT nanoparticles had been successfully copolymerized with vinyl acetate. The XRD results demonstrated that the MMT was exfoliated during polymerization. The exfoliated PVAc/MMT nanocomposites showed a lower glass transition temperature (Tg) and a worse thermal stability compared with the pure PVAc. However, bonding power of the nanocomposite latex of PVAc/MMT was improved due to the strong interaction between silica nanoparticles and polymer matrix via covalent bonds.

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Improved colloidal stability by seeded emulsion copolymerization of styrene with acrylic acid

Aqueous Polymer Dispersions ◽

10.1007/978-3-540-36474-0_13 ◽

2004 ◽

pp. 64-67

Author(s):

Xaviera E. E. Reynhout ◽

Jan Meuldijk ◽

Bart A. H. Drinkenburg

Keyword(s):

Acrylic Acid ◽

Colloidal Stability ◽

Emulsion Copolymerization

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Water-Based Coatings for Building Part I: Preparation and Physical Properties of Polyacrylate-Siloxane Emulsion

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.174-177.520 ◽

2012 ◽

Vol 174-177 ◽

pp. 520-523 ◽

Cited By ~ 1

Author(s):

Pei Wang ◽

Xia Zhen Zhang ◽

Li Na Heng ◽

Teng Yu ◽

Xie Wei Chen ◽

...

Keyword(s):

Acrylic Acid ◽

Physical Properties ◽

Optimal Conditions ◽

Pencil Hardness ◽

Emulsion Copolymerization ◽

Stirring Rate ◽

Water Based ◽

Acrylate Emulsion ◽

Vinyl Triethoxysilane ◽

Silicone Acrylate

This study is to report the synthesis of polyacrylate-siloxane latex with vinyl triethoxysilane(DB-151), methyl methacrylate(MMA) acrylic acid(AA), butyl acrylate(BA) by emulsion copolymerization and characterized by FTIR. The physical properties are also analysized by water absorption, pencil hardness, circle adhesion method, etc.. The polymerization factors for emulsion had been discussed in several aspects. The results showed that the optimal conditions for synthesizing silicone-acrylate emulsion were of DB -151content of 6%~8%, emulsifier OP-10/SDS/ DNS-458 ratio:2/1/1, in stirring rate 450 r/min in the period of disperse and emulsification, stirring rate 200 r/min in the period of synthesis, with reaction temperature 75°C.

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