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2008•Journal of Zhejiang Normal UniversityRequires access

Preparation of anionic organosiloxane emulsion

Xiaohui Xiao

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Abstract

A method for preparation of anionic organosiloxane emulsion polymerization of octamethylcyclotetrasiloxane(D4) was introduced.The anionid emulsion polymerization of system composed by D4,DBSA(dedecyl benzene sulfonic acid),cross-linking agent and water was studied.The effect of temperatures,emulsifier amounts and cross-linking agent on the polymerization efficiency was discussed.The experimental results showed the system that cross-linking agent had been added during the late stage of reaction was better.And the emulsion which contained 100 g D4,10 g DBSA,5 g cross-linking agent that was dropped at the terminal stage when the rate of conversion reached 80% was optimum.

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What this paper is about

A method for preparation of anionic organosiloxane emulsion polymerization of octamethylcyclotetrasiloxane(D4) was introduced.The anionid emulsion polymerization of system composed by D4,DBSA(dedecyl benzene sulfonic acid),cross-linking agent and water was studied.The effect of temperatures,emulsifier amounts and cross-linking agent on the polymerization efficiency was discussed.The experimental results showed the system that cross-linking agent had been added during the late stage of reaction was better.And the emulsion which contained 100 g D4,10 g DBSA,5 g cross-linking agent that was dropped at the terminal stage when the rate of conversion reached 80% was optimum.

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Available abstract

A method for preparation of anionic organosiloxane emulsion polymerization of octamethylcyclotetrasiloxane(D4) was introduced.The anionid emulsion polymerization of system composed by D4,DBSA(dedecyl benzene sulfonic acid),cross-linking agent and water was studied.The effect of temperatures,emulsifier amounts and cross-linking agent on the polymerization efficiency was discussed.The experimental results showed the system that cross-linking agent had been added during the late stage of reaction was better.And the emulsion which contained 100 g D4,10 g DBSA,5 g cross-linking agent that was dropped at the terminal stage when the rate of conversion reached 80% was optimum.

Key concepts: Emulsion polymerization, Octamethylcyclotetrasiloxane, Emulsion, Polymerization, Polymer chemistry, Sulfonic acid, Chemistry, Benzene

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