Emulsion Copolymerization of Vegetable Oil Macromonomers Possessing Both Acrylic and Allylic Functionalities

Document Type

Conference Proceeding

Publication Date

2-1-2013

School

Polymer Science and Engineering

Abstract

Summary: A soybean oil-based vegetable oil macromonomer (VOMM) was incorporated as a comonomer into an all-acrylic copolymer via semi-continuous emulsion polymerization. Structurally, VOMMs are comprised of long hydrocarbon fatty acid moieties with allylic double bonds which enable auto-oxidative crosslinking at ambient temperature. VOMMs facilitate low temperature film formation and the fatty acid chains tethered to the polymer backbone auto-oxidize upon film formation to yield crosslinked films. Latexes with varying VOMM levels were synthesized to elucidate the effect of VOMMs on the pre-cure and post-cure glass transition temperature (Tg) and minimum film formation temperature (MFT). Thermoplastic control latexes (without VOMM) were also synthesized via copolymerization of butyl acrylate and methyl methacrylate. This paper details the characterization performed to validate and quantify the VOMM allylic unsaturation retention before, during, and after polymerization, and to quantify and confirm the increase in Tg resulting from auto-oxidative crosslinking via solid state 13C nuclear magnetic resonance spectroscopy and differential scanning calorimetry. Copyright © 2013 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

Publication Title

Macromolecular Symposia

Volume

324

Issue

1

First Page

95

Last Page

106

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