Miniemulsion polymerisation of a bifunctional macromonomer.

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Journal of Rubber Research (JRR)

2001

Miniemulsion polymerisation of a bifunctional macromonomer.

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File	Description	Size	Format
ARTICLE	Hafsah_2001_Miniemulsion_polymerisation_bifunctional	1 MB	Adobe Acrobat PDF
METADATA	Article Metadata	3 KB	XML Document

Title: Miniemulsion polymerisation of a bifunctional macromonomer.
Creator: Hafsah bt. Mohd. Ghazaly
Creator: Daniels, E.S.
Creator: Klein, A.
Creator: El-Aasser, M.S.
Contributor: SAUID|ROSNAH
Subject: PRRIM
Subject: Rubber chemistry, properties and testing
Date: 20030923 | 20050823 | | 2001 | | | | | | |
Description: Evaluation of the miniemulsion polymerisation of a hydmphobic bifunctional macromonomer was undertaken. The rate of polymerisation of the macromonomer was faster when the reaction was carried out using a water-soluble initiator, potassium persulphate, KPS, than when an oil-soluble initiator, 2,2’-azobis(isobutyronitrile), AIBN, was used. Unsaturation peaks were no longer observable in the 1H NMR spectrum of the reacted macromonomer when the gel content was -50%. In both cases, depending on the reaction time, cross-linked products were obtained. For the KPS-initiated homopolymerisation, 50% - 60% gel content was already obtained by (he first hour of reaction, while similar gel development in the macromonomer was only observed after 6 h ~ 12 h of polymerisation when AIBN was used. The polymerised macromonomer (using AIBN as initiator) exhibited a distinct physical change when water was removed, only when (he gel content was -50%, which- corresponded to a substantial loss of unsaturation peaks in the 1H NMR spectrum. The gel content remained low (< 10%) earlier in the polymerisation despite the steady increase in the reaction of the double bonds of the macromonomer.

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collection(s): 2001
Identifier: vital1:24559
Format: application/pdf
Relation: 4,1,-, 28,37
Relation: J Rubb Res (2001) 4(1):28-37
Rights: No|Yes
Type: Article
Source: JRR
Source: RRIM/LGM

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Hafsah bt. Mohd. Ghazaly, Daniels, E.S., Klein, A., El-Aasser, M.S.. Miniemulsion polymerisation of a bifunctional macromonomer.. 20030923 | 20050823 | | 2001 | | | | | | |.

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2001

Miniemulsion polymerisation of a bifunctional macromonomer.

VITAL Repository 5.2