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

2004 ◽  
pp. 64-67
Author(s):  
Xaviera E. E. Reynhout ◽  
Jan Meuldijk ◽  
Bart A. H. Drinkenburg
Keyword(s):  
Acrylic Acid ◽  
Colloidal Stability ◽  
Emulsion Copolymerization

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

2004 ◽  
pp. 64-67
Author(s):  
Xaviera E. E. Reynhout ◽  
Jan Meuldijk ◽  
Bart A. H. Drinkenburg
Keyword(s):  
Acrylic Acid ◽  
Colloidal Stability ◽  
Emulsion Copolymerization

Uniform Poly(acrylic acid)-Functionalized Lanthanide-Doped LaVO4Nanophosphors with High Colloidal Stability and Biocompatibility

2015 ◽  
Vol 2015 (27) ◽  
pp. 4546-4554 ◽  
Author(s):  
Nuria O. Nuñez ◽  
Paola Zambrano ◽  
Jorge García-Sevillano ◽  
Eugenio Cantelar ◽  
Sara Rivera-Fernández ◽  
...  
Keyword(s):  
Acrylic Acid ◽  
Colloidal Stability ◽  
Poly Acrylic Acid

Carboxyl functionalized poly(methyl methacrylate-acrylic acid-ethylene glycol dimethacrylate) copolymer particles and their amination with amine-nucleophiles

e-Polymers ◽  
2008 ◽  
Vol 8 (1) ◽  
Author(s):  
Hasan Ahmad ◽  
Md. Emtiaz Hossain ◽  
M. Abdur Rahman ◽  
M. Mahbubor Rahman ◽  
M. A. Jalil Miah ◽  
...  
Keyword(s):  
Acrylic Acid ◽  
Ethylene Glycol ◽  
Methyl Methacrylate ◽  
Ethylene Glycol Dimethacrylate ◽  
Carboxyl Groups ◽  
Carboxyl Group ◽  
Glycol Dimethacrylate ◽  
Emulsion Copolymerization ◽  
Poly Methyl Methacrylate ◽  
Ftir Spectral Analysis

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

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

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.

scholarly journals Radiation synthesis of poly(acrylic acid) nanogels for drug delivery applications – post-synthesis product colloidal stability

Nukleonika ◽  
2021 ◽  
Vol 66 (4) ◽  
pp. 179-186
Author(s):  
Beata P. Rurarz ◽  
Natalia Gibka ◽  
Małgorzata Bukowczyk ◽  
Sławomir Kadłubowski ◽  
Piotr Ulański
Keyword(s):  
Drug Delivery ◽  
Acrylic Acid ◽  
Colloidal Stability ◽  
Biologically Active ◽  
Cross Linking ◽  
Synthesis Product ◽  
High Dose ◽  
Water Radiolysis ◽  
Drug Delivery Applications ◽  
Poly Acrylic Acid

Abstract Synthesis of polymer nanogels (NGs) for biomedical applications is considered to be a very promising application in radiation engineering. Under high-dose pulse irradiation of dilute aqueous polymer solution, reactive species generated by water radiolysis can create multiple radicals on each macromolecule and consequently induce intramolecular cross-linking of polymer chains, resulting in NG formation. The obtained products are free from harmful monomers, initiators, and cross-linking agents, which makes them potentially applicable for drug delivery applications. One of the biggest challenges in handling and use of nanoparticles, however, is the colloidal stability, when aqueous suspensions are stored for prolonged periods. Therefore, development of the best protocols for the particular nanocarrier storage is key. To address this need, we have performed the prospective study in which we systematically assessed the influence of various processing and storage scenarios feasible in our lab, on the colloidal stability of the radiation-synthesized poly(acrylic acid) (PAA) NG particles in suspension. This allowed us to choose the optimal way of handling the product after its synthesis. We confirmed that none of the strategies we used and tested are substantially detrimental to our product. Filtration with 0.2-μm filters was proven sufficient for sample purification and prolonged storage in aqueous suspension did not exert a negative effect on the colloidal stability of particles suspension. We have also demonstrated that lyoprotectant-free lyophilization was suitable for our polymer nanoparticles. This is an important fact for further application of particles as nanocarriers for biologically active compounds such as targeting ligands or therapeutic moieties.

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

2012 ◽  
Vol 174-177 ◽  
pp. 520-523 ◽  
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.

Reactive Surfactants in Heterophase Polymerization. 7.†Emulsion Copolymerization Mechanism Involving Three Anionic Polymerizable Surfactants (Surfmers) with Styrene−Butyl Acrylate−Acrylic Acid

1997 ◽  
Vol 30 (20) ◽  
pp. 6024-6033 ◽  
Author(s):  
Harold A. S. Schoonbrood ◽  
Maria J. Unzué, ◽  
Ole-Jacob Beck ◽  
José M. Asua ◽  
Amaia Montoya Goñi ◽  
...  
Keyword(s):  
Acrylic Acid ◽  
Butyl Acrylate ◽  
Emulsion Copolymerization ◽  
Heterophase Polymerization ◽  
Reactive Surfactants ◽  
Polymerizable Surfactants
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