Bioderived Thiol-Ene Emulsion Polymerization for Hybrid Latex Particles
Melissa K Stanfield1, Claudia A Weerts1, Mahesh Prasad Timilsina1
1School of Natural Sciences - Chemistry, University of Tasmania, Hobart, Tasmania 7001, Australia.
Biomacromolecules
|September 20, 2024
Summary
Bioderived monomers were used to create poly(thioether) particles via emulsion polymerization. These particles were then used to form core-shell structures with tunable properties, offering sustainable polymer materials.
Area of Science:
- Polymer Chemistry
- Materials Science
- Sustainable Chemistry
Background:
- Bioderived compounds offer sustainable alternatives to petroleum-based feedstocks in polymer synthesis.
- Thiol-ene click chemistry provides efficient routes for polymer network formation.
- Emulsion polymerization is a versatile technique for producing polymer nanoparticles and latexes.
Purpose of the Study:
- To synthesize novel bioderived monomers from levoglucosan (LGA), levogucosenone (LGO), and isosorbide.
- To investigate the thiol-ene emulsion polymerization of these monomers for poly(thioether) particle formation.
- To prepare and characterize core-shell polymer latexes using these bioderived particles.
Main Methods:
- Modification of bioderived compounds (LGA, LGO, isosorbide) with 4-pentenoic acid.
- Ab initio emulsion polymerization using a dithiol and potassium persulfate initiator.
- Seeded emulsion polymerization of styrene or methyl methacrylate onto bioderived seed particles.
- Characterization using electron microscopy and theoretical modeling of particle morphology.
Main Results:
- Successful synthesis of polymerizable monomers from bioderived sources.
- Poly(thioether) particles were formed, with particle size influenced by monomer structure.
- Core-shell latex particles with distinct high-Tg core and low-Tg bioderived shell were successfully prepared.
- Experimental results aligned with theoretical predictions of core-shell morphology.
Conclusions:
- Bioderived monomers can be effectively polymerized via thiol-ene emulsion polymerization.
- The developed method allows for the creation of core-shell polymer latexes with tunable properties.
- This approach offers a pathway towards sustainable and functional polymer materials.
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