Diffusion of oligomers in latex systems -- A route to low volatile organic compound (VOC) coatings

Fasano, David M.; Fitzwater, Susan J.; Lau, Willie; Sheppard, Aurelia C.
June 2010
Canadian Journal of Chemistry;Jun2010, Vol. 88 Issue 6, p500
Academic Journal
We synthesize specially designed latex polymer systems by an in situ emulsion polymerization process that yields latex particles with both a high molecular weight polymer phase and a low molecular weight oligomer phase. The oligomer functions as a plasticizer by lowering the glass transition temperature (Tg) of the polymer. A polymer system is prepared by blending soft latex and a hard latex where the hard mode consists of a hard, high molecular weight polymer and an oligomer, allowing for facile film formation at ambient conditions. Upon the soft and hard particles coming into contact during the film formation process, the oligomer preferentially diffuses from the hard polymer to the soft polymer, thus recovering the natural Tg of the hard polymer as described in a recent patent application. Oligomer diffusion allows a hard coalesced phase to be incorporated into a latex film without using a coalescing solvent, which would contribute to the volatile organic compound (VOG) content. A well-coalesced hard phase in a latex film contributes to a variety of desirable coatings properties, such as tack, print, block, and scrub resistance properties.


Related Articles

  • Tying up the knots. Scheerder, Jurgen; Bouman, Jan; Roelands, Marc; Twene, Derrick // European Coatings Journal;Sep2011, Issue 9, p42 

    The article discusses a study which investigated a waterborne cationic emulsion polymer and compared its adhesion characteristics with those of other test polymers. Results revealed that the waterborne cationic emulsion polymer gave a very high level performance of anti-knot bleeding in wood. It...

  • New Report Studies Polymer Emulsions Market.  // Paint & Coatings Industry;Jan2016, Vol. 32 Issue 1, p12 

    The article reports on the release of a study by research firm MarketsandMarkets which covers trends and forecasts for the polymer emulsion market between 2015 and 2020.

  • Structure of the segmented polyetheruretaneureas on the base of aminocontaining oligoethers. Shevchuk, A. V.; Vortman, M. Ya.; Brovko, A. A.; Klimenko, N. S.; Batog, O. P.; Shevchenko, V. V. // Polymer Journal (18181724);2011, Vol. 33 Issue 1, p45 

    Dynamic-mechanical properties of the segmented polyetheruretaneureas, which were synthesized by the reaction of urethane forpolymers and oligoethers with terminal aminogroups at the various rations of initional components were investigated. That were found that the structure and mechanical...

  • Polymer chain dynamics and glass transition in athermal polymer/nanoparticle mixtures. Hyunjoon Oh; Green, Peter F. // Nature Materials;Feb2009, Vol. 8 Issue 2, p139 

    Polymer nanocomposites (PNCs), prepared by incorporating nanoparticles within a polymer host, generally exhibit properties that differ significantly from those of the host, even with small amounts of nanoparticles. A significant challenge is how to tailor the properties of these materials for...

  • Temperature modulated DSC study of the kinetics of free radical isothermal network polymerization. Viciosa, M. T.; Hoyo, J. Quiles; Dionísio, M.; Ribelles, J. Gómez // Journal of Thermal Analysis & Calorimetry;Nov2007, Vol. 90 Issue 2, p407 

    Temperature modulated differential scanning calorimetry (TMDSC) is used to study the kinetics of the free radical isothermal polymerization of triethyleneglycol dimethacrylate (TEGDMA). Azo- bis-isobutironitrile was used as initiator. The polymerization’s temperature is lower than the...

  • Mechanical activation of butadiene-acrylonitrile rubber SKN-26. Galimova, E. M.; Dorozhkin, V. P.; Sofronova, O. V. // International Polymer Science & Technology;2012, Vol. 39 Issue 9, p11 

    The article discusses a study on the effect of mechanical activation on rubber in its macromolecular structure polar groups. The study involves specimen of butadiene-acrylonitrile rubber derived from emulsion polymerisation with 26% content of SKN-26 acrylonitrile units, cohesive energy density...

  • Preparation and Properties of PTFE-PMMA Core-Shell Nanoparticles and Nanocomposites. Antonioli, Diego; Laus, Michele; Zuccheri, Giampaolo; Kapeliouchko, Valerj; Righetti, Maria Cristina; Boarino, Luca; Sparnacci, Katia // Journal of Nanotechnology;2012, p1 

    The preparation of polytetrafluoroethylene-poly(methyl methacrylate) (PTFE-PMMA) core-shell particles was described, featuring controlled size and narrow size distribution over a wide compositional range, through a seeded emulsion polymerization starting from a PTFE seed of 26 nanometers. Over...

  • Modification of poly (butylene terephthalate) with core-shell nanoparticles containing UV-absorber. Liu, Lei; You, Bin; Zeng, Meng-Qi; Ren, Xian-Cheng // Journal of Polymer Research;Apr2014, Vol. 21 Issue 4, p1 

    A type of core-shell polymer nanoparticles capable of UV-stabilizing and toughening, was synthesized via the two-step emulsion polymerization of butyl acrylate (BA), methyl methacrylate (MMA) and glycidyl methacrylate (GMA), in the presence of 2-hydroxy-4-(3-methacryloxy-2-hydroxyl-proroxy)...

  • Study Examines Market for Emulsion Polymers.  // Paint & Coatings Industry;Feb2014, Vol. 30 Issue 2, p10 

    The article offers information on a Transparency Market Research study that attributes the need for emulsion polymers to growing demand from the coatings and adhesives industries and predicts emulsion polymers demand on a global and regional level for the six-year period from 2013 to 2019 in...


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics