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Unexpected tackifiers from isosorbide.

Michael D Zenner1, Samy A Madbouly, Jason S Chen

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Summary
This summary is machine-generated.

New bio-based tackifiers derived from isosorbide offer broad temperature tack and high performance. Structural changes allow tuning of tack temperature and viscosity for diverse applications.

Keywords:
amorphous materialsgreen chemistryrenewable resourcesstructure-activity relationshipstackifiers

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Area of Science:

  • Polymer Chemistry
  • Materials Science
  • Sustainable Chemistry

Background:

  • Tackifiers are crucial in adhesives, influencing performance and application range.
  • Developing sustainable alternatives to petroleum-based tackifiers is an ongoing challenge.
  • Isosorbide, a bio-derived diol, presents a promising platform for novel material synthesis.

Purpose of the Study:

  • To synthesize and characterize novel, molecularly well-defined tackifiers with high bio-content.
  • To investigate the relationship between molecular structure and tack properties (temperature range, maximum tack).
  • To explore the influence of structural modifications on tackifier viscosity.

Main Methods:

  • Synthesis of tackifiers via reaction of isosorbide with various cyclic anhydrides.
  • Characterization of tack properties, including maximum tack and tack temperature range.
  • Rheological analysis to determine viscosity and its dependence on temperature and structure.

Main Results:

  • Successfully prepared tackifiers with up to 100% bio-content.
  • Achieved tack over a broad temperature range with high maximum tack (approximately 2000 kPa).
  • Demonstrated that structural modifications effectively tune the temperature of maximum tack and alter viscosity.

Conclusions:

  • Isosorbide-based tackifiers offer a sustainable and high-performance alternative.
  • Molecular design provides control over critical tackifier properties for tailored applications.
  • These bio-based materials show significant potential for the adhesives industry.