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Effect of pH and Monomer Dosing Rate in the Anionic Polymerization of Ethyl Cyanoacrylate in Semicontinuous Operation
Joint Authors
Saade, Hened
Torres, Suleidi
Barrera, Cynthia
Sánchez, Julieta
Garza, Yolanda
López, Raúl G.
Source
International Journal of Polymer Science
Issue
Vol. 2015, Issue 2015 (31 Dec. 2015), pp.1-9, 9 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2015-03-11
Country of Publication
Egypt
No. of Pages
9
Main Subjects
Abstract EN
Nanoparticles of poly(ethyl cyanoacrylate) with more than 10% solids content were prepared by semicontinuous heterophase polymerization at monomer-starved conditions varying the initial pH in the interval of 1–1.75 and at two monomer dosing rates.
Measurements by scanning-transmission electron microscopy allowed us to identify an inverse dependence of particle size on pH.
Furthermore, all the polymerizations conducted at the slower monomer dosing rate rendered two particle populations, with the larger one formed from the aggregation of a fraction of the smaller particles.
It was believed that the so slow addition of the monomer caused the formation of very small but instable particles, thereby a fraction of which aggregated to reduce the total interface particles-aqueous phase, increasing the latex stability.
An increase in the monomer dosing rate led to larger and more stable particles in such way that only one population of nanoparticles with around 40 nm in average diameter was obtained.
American Psychological Association (APA)
Saade, Hened& Torres, Suleidi& Barrera, Cynthia& Sánchez, Julieta& Garza, Yolanda& López, Raúl G.. 2015. Effect of pH and Monomer Dosing Rate in the Anionic Polymerization of Ethyl Cyanoacrylate in Semicontinuous Operation. International Journal of Polymer Science،Vol. 2015, no. 2015, pp.1-9.
https://search.emarefa.net/detail/BIM-1066845
Modern Language Association (MLA)
Saade, Hened…[et al.]. Effect of pH and Monomer Dosing Rate in the Anionic Polymerization of Ethyl Cyanoacrylate in Semicontinuous Operation. International Journal of Polymer Science No. 2015 (2015), pp.1-9.
https://search.emarefa.net/detail/BIM-1066845
American Medical Association (AMA)
Saade, Hened& Torres, Suleidi& Barrera, Cynthia& Sánchez, Julieta& Garza, Yolanda& López, Raúl G.. Effect of pH and Monomer Dosing Rate in the Anionic Polymerization of Ethyl Cyanoacrylate in Semicontinuous Operation. International Journal of Polymer Science. 2015. Vol. 2015, no. 2015, pp.1-9.
https://search.emarefa.net/detail/BIM-1066845
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1066845