Investigation of seeded emulsion polymerization using a calorimetric method: Effects of the surface charge density on polymerization rate and average number of radicals per particle

In Woo Cheong; Jung Hyun Kim

doi:10.1016/S0927-7757(98)00435-X

Investigation of seeded emulsion polymerization using a calorimetric method: Effects of the surface charge density on polymerization rate and average number of radicals per particle

In Woo Cheong, Jung Hyun Kim

Department of Chemical and Biomolecular Engineering

Research output: Contribution to journal › Conference article › peer-review

15 Citations (Scopus)

Abstract

A reaction calorimeter was applied to study emulsion kinetics in a seeded emulsion polymerization using highly sulfonated polystyrene seed latices. Several batches of emulsifier-free seeded emulsion polymerization were carried out to investigate the electrostatic repulsion and steric effect of highly sulfonated seed particles on the average number of radicals per particle (n) and the polymerization rate (R(p)) in Interval II. Two monodisperse seed latices with significantly different surface coverage of sodium styrene sulfonate (NaSS) were prepared from the two-stage shot-growth process. After the purification of the seed latices, they were used in seeded emulsion polymerization of styrene. From the calorimetric data, radical entry and exit coefficients were calculated and compared with different reaction conditions. The 'slope and intercept method' introduced by Gilbert was used in the calculation. The electrostatic repulsion between the oligomeric radicals and the surface of sulfonated seed particles and the steric barrier of sulfonate-rich seed surface had significant influences on the changes of emulsion kinetic parameters. Copyright (C) 1999 Elsevier Science B.V. All rights reserved.

Original language	English
Pages (from-to)	137-142
Number of pages	6
Journal	Colloids and Surfaces A: Physicochemical and Engineering Aspects
Volume	153
Issue number	1-3
DOIs	https://doi.org/10.1016/S0927-7757(98)00435-X
Publication status	Published - 1999 Aug 15
Event	Proceedings of the 1997 7th Iketani Conference - International Symposium on Advanced Technology of Fine Particles - Yokohama, Jpn Duration: 1997 Oct 12 → 1997 Oct 16

Bibliographical note

Funding Information:
This research was carried out as a part of an international collaboration research project which was supported by the Korea Ministry of Industry and Trading. The authors thank Dr El-Aasser and his colleagues in Lehigh University.

All Science Journal Classification (ASJC) codes

Surfaces and Interfaces
Physical and Theoretical Chemistry
Colloid and Surface Chemistry

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10.1016/S0927-7757(98)00435-X

Cite this

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title = "Investigation of seeded emulsion polymerization using a calorimetric method: Effects of the surface charge density on polymerization rate and average number of radicals per particle",

abstract = "A reaction calorimeter was applied to study emulsion kinetics in a seeded emulsion polymerization using highly sulfonated polystyrene seed latices. Several batches of emulsifier-free seeded emulsion polymerization were carried out to investigate the electrostatic repulsion and steric effect of highly sulfonated seed particles on the average number of radicals per particle (n) and the polymerization rate (R(p)) in Interval II. Two monodisperse seed latices with significantly different surface coverage of sodium styrene sulfonate (NaSS) were prepared from the two-stage shot-growth process. After the purification of the seed latices, they were used in seeded emulsion polymerization of styrene. From the calorimetric data, radical entry and exit coefficients were calculated and compared with different reaction conditions. The 'slope and intercept method' introduced by Gilbert was used in the calculation. The electrostatic repulsion between the oligomeric radicals and the surface of sulfonated seed particles and the steric barrier of sulfonate-rich seed surface had significant influences on the changes of emulsion kinetic parameters. Copyright (C) 1999 Elsevier Science B.V. All rights reserved.",

keywords = "Electrostatic repulsion, Radical entry and exit, Reaction calorimeter, Steric effect",

author = "Cheong, {In Woo} and Kim, {Jung Hyun}",

note = "Funding Information: This research was carried out as a part of an international collaboration research project which was supported by the Korea Ministry of Industry and Trading. The authors thank Dr El-Aasser and his colleagues in Lehigh University. ; Proceedings of the 1997 7th Iketani Conference - International Symposium on Advanced Technology of Fine Particles ; Conference date: 12-10-1997 Through 16-10-1997",

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doi = "10.1016/S0927-7757(98)00435-X",

language = "English",

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Investigation of seeded emulsion polymerization using a calorimetric method: Effects of the surface charge density on polymerization rate and average number of radicals per particle. / Cheong, In Woo; Kim, Jung Hyun.
In: Colloids and Surfaces A: Physicochemical and Engineering Aspects, Vol. 153, No. 1-3, 15.08.1999, p. 137-142.

Research output: Contribution to journal › Conference article › peer-review

TY - JOUR

T1 - Investigation of seeded emulsion polymerization using a calorimetric method

T2 - Proceedings of the 1997 7th Iketani Conference - International Symposium on Advanced Technology of Fine Particles

AU - Cheong, In Woo

AU - Kim, Jung Hyun

N1 - Funding Information: This research was carried out as a part of an international collaboration research project which was supported by the Korea Ministry of Industry and Trading. The authors thank Dr El-Aasser and his colleagues in Lehigh University.

PY - 1999/8/15

Y1 - 1999/8/15

N2 - A reaction calorimeter was applied to study emulsion kinetics in a seeded emulsion polymerization using highly sulfonated polystyrene seed latices. Several batches of emulsifier-free seeded emulsion polymerization were carried out to investigate the electrostatic repulsion and steric effect of highly sulfonated seed particles on the average number of radicals per particle (n) and the polymerization rate (R(p)) in Interval II. Two monodisperse seed latices with significantly different surface coverage of sodium styrene sulfonate (NaSS) were prepared from the two-stage shot-growth process. After the purification of the seed latices, they were used in seeded emulsion polymerization of styrene. From the calorimetric data, radical entry and exit coefficients were calculated and compared with different reaction conditions. The 'slope and intercept method' introduced by Gilbert was used in the calculation. The electrostatic repulsion between the oligomeric radicals and the surface of sulfonated seed particles and the steric barrier of sulfonate-rich seed surface had significant influences on the changes of emulsion kinetic parameters. Copyright (C) 1999 Elsevier Science B.V. All rights reserved.

AB - A reaction calorimeter was applied to study emulsion kinetics in a seeded emulsion polymerization using highly sulfonated polystyrene seed latices. Several batches of emulsifier-free seeded emulsion polymerization were carried out to investigate the electrostatic repulsion and steric effect of highly sulfonated seed particles on the average number of radicals per particle (n) and the polymerization rate (R(p)) in Interval II. Two monodisperse seed latices with significantly different surface coverage of sodium styrene sulfonate (NaSS) were prepared from the two-stage shot-growth process. After the purification of the seed latices, they were used in seeded emulsion polymerization of styrene. From the calorimetric data, radical entry and exit coefficients were calculated and compared with different reaction conditions. The 'slope and intercept method' introduced by Gilbert was used in the calculation. The electrostatic repulsion between the oligomeric radicals and the surface of sulfonated seed particles and the steric barrier of sulfonate-rich seed surface had significant influences on the changes of emulsion kinetic parameters. Copyright (C) 1999 Elsevier Science B.V. All rights reserved.

KW - Electrostatic repulsion

KW - Radical entry and exit

KW - Reaction calorimeter

KW - Steric effect

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DO - 10.1016/S0927-7757(98)00435-X

M3 - Conference article

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SN - 0927-7757

VL - 153

SP - 137

EP - 142

JO - Colloids and Surfaces A: Physicochemical and Engineering Aspects

JF - Colloids and Surfaces A: Physicochemical and Engineering Aspects

IS - 1-3

Y2 - 12 October 1997 through 16 October 1997

ER -

Investigation of seeded emulsion polymerization using a calorimetric method: Effects of the surface charge density on polymerization rate and average number of radicals per particle

Abstract

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