Influence of the electrostatic interactions in a Pickering emulsion polymerization for the synthesis of silica-polystyrene hybrid nanoparticles

Journal of Colloid and Interface Science
Q Monégier du SorbierC Pagnoux

Abstract

Silica-polystyrene hybrid nanoparticles were synthesized by Pickering emulsion polymerization. The coupling effect of initiator type and silica surface charge was studied to exhibit the predominant role of electrostatic interactions in the synthesis mechanisms. Non-ionic hydrophobic initiator (2,2'-azobis(2-methylpropionitrile), AIBN) or anionic hydrophilic initiator (sodium persulfate, NaPS), and positively or negatively charged silica were used as reactants with styrene for Pickering emulsion polymerization. Their interactions were evaluated by Zeta potential measurements. The droplet size and the stability of the Pickering emulsions, and the hybrid particle morphology, surface coverage, size and agglomeration were evaluated by laser granulometry and microscopy. Similar surface charge between negatively charged silica particles and an anionic initiator led to strong repulsions and thus to non-covered polystyrene nanoparticles. With positively charged silica, a high decoration was obtained due to attractive interactions between the inorganic and the organic phases, but a strong agglomeration was also observed. The use of a non-ionic initiator led to a homogeneous coverage with negatively charged silica. With positively charged...Continue Reading

References

Mar 11, 2004·The European Physical Journal. E, Soft Matter·S ArdittyF Leal-Calderon
Jun 5, 2004·Journal of Colloid and Interface Science·Stéphane ArdittyFernando Leal-Calderon
May 17, 2006·Langmuir : the ACS Journal of Surfaces and Colloids·Andreas SchmidSteven P Armes
Oct 2, 2007·Advances in Colloid and Interface Science·Timothy N HunterGraeme J Jameson
Aug 14, 2008·Langmuir : the ACS Journal of Surfaces and Colloids·Hua ZouJian Shen
Mar 3, 2009·Journal of Colloid and Interface Science·Huan Ma, Lenore L Dai
Aug 27, 2009·Langmuir : the ACS Journal of Surfaces and Colloids·N Sheibat-Othman, E Bourgeat-Lami
Sep 4, 2010·Langmuir : the ACS Journal of Surfaces and Colloids·Jian Li, Harald D H Stöver

❮ Previous
Next ❯

Citations

Jan 24, 2017·Langmuir : the ACS Journal of Surfaces and Colloids·Hua Zou, Xia Wang
Sep 6, 2020·Polymers·Joanna Szafraniec-SzczęsnySzczepan Zapotoczny
Nov 9, 2020·Advances in Colloid and Interface Science·V Chandran SujaG G Fuller
Dec 10, 2020·Langmuir : the ACS Journal of Surfaces and Colloids·Ying ZhangDongfang Liu

❮ Previous
Next ❯

Related Concepts

Trending Feeds

COVID-19

Coronaviruses encompass a large family of viruses that cause the common cold as well as more serious diseases, such as the ongoing outbreak of coronavirus disease 2019 (COVID-19; formally known as 2019-nCoV). Coronaviruses can spread from animals to humans; symptoms include fever, cough, shortness of breath, and breathing difficulties; in more severe cases, infection can lead to death. This feed covers recent research on COVID-19.

Blastomycosis

Blastomycosis fungal infections spread through inhaling Blastomyces dermatitidis spores. Discover the latest research on blastomycosis fungal infections here.

Nuclear Pore Complex in ALS/FTD

Alterations in nucleocytoplasmic transport, controlled by the nuclear pore complex, may be involved in the pathomechanism underlying multiple neurodegenerative diseases including Amyotrophic Lateral Sclerosis and Frontotemporal Dementia. Here is the latest research on the nuclear pore complex in ALS and FTD.

Applications of Molecular Barcoding

The concept of molecular barcoding is that each original DNA or RNA molecule is attached to a unique sequence barcode. Sequence reads having different barcodes represent different original molecules, while sequence reads having the same barcode are results of PCR duplication from one original molecule. Discover the latest research on molecular barcoding here.

Chronic Fatigue Syndrome

Chronic fatigue syndrome is a disease characterized by unexplained disabling fatigue; the pathology of which is incompletely understood. Discover the latest research on chronic fatigue syndrome here.

Evolution of Pluripotency

Pluripotency refers to the ability of a cell to develop into three primary germ cell layers of the embryo. This feed focuses on the mechanisms that underlie the evolution of pluripotency. Here is the latest research.

Position Effect Variegation

Position Effect Variagation occurs when a gene is inactivated due to its positioning near heterochromatic regions within a chromosome. Discover the latest research on Position Effect Variagation here.

STING Receptor Agonists

Stimulator of IFN genes (STING) are a group of transmembrane proteins that are involved in the induction of type I interferon that is important in the innate immune response. The stimulation of STING has been an active area of research in the treatment of cancer and infectious diseases. Here is the latest research on STING receptor agonists.

Microbicide

Microbicides are products that can be applied to vaginal or rectal mucosal surfaces with the goal of preventing, or at least significantly reducing, the transmission of sexually transmitted infections. Here is the latest research on microbicides.