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@PHDTHESIS{Mnstermann:1020926,
      author       = {Münstermann, Nils},
      othercontributors = {Weichold, Oliver Matthias and Albrecht, Markus},
      title        = {{B}iobasierte {C}hitosan-{I}nterpolyelektrolytkomplexe zur
                      {B}eschichtung und {V}erklebung von {H}olzwerkstoffen},
      school       = {Rheinisch-Westfälische Technische Hochschule Aachen},
      type         = {Dissertation},
      address      = {Aachen},
      publisher    = {RWTH Aachen University},
      reportid     = {RWTH-2025-09335},
      pages        = {1 Online-Ressource : Illustrationen},
      year         = {2025},
      note         = {Veröffentlicht auf dem Publikationsserver der RWTH Aachen
                      University; Dissertation, Rheinisch-Westfälische Technische
                      Hochschule Aachen, 2025},
      abstract     = {This research encompasses a thorough investigation of
                      chitosan itaconate, a bio-based multifunctional solution
                      that enables both the coating and bonding of lignocellulosic
                      materials. The orthogonal reactivity of itaconic acid allows
                      for the protonation of the amino groups of chitosan, which
                      first yields a water-soluble salt that is subsequently
                      converted into a water-insoluble interpolyelectrolyte
                      complex via thermally initiated radical polymerisation. The
                      aqueous chitosan itaconate solutions are shear-thinning and
                      thixotropic. They are easy to apply and polymerize into a
                      transparent, strongly adhesive, and water-insoluble film.
                      The aqueous chitosan itaconate salt solution penetrates
                      approximately 400–1000 µm of lignocellulosic substrates.
                      Within the substrate, chitosan and the second free carboxyl
                      group of itaconic acid interact with the hydroxyl groups of
                      cellulose through hydrogen bonds. These bonds act
                      synergistically, resulting in a strong adhesion of the
                      interpolyelectrolyte complex to the substrate. On
                      lignocellulosic surfaces, the solution forms a hydrophobic
                      (approx. 93°) film, which protects against UV-induced
                      yellowing and everyday contamination, while significantly
                      reducing flammability: a single application decreases the
                      burning rate, and multiple applications completely prevent
                      combustion. Wood-based materials and wood, natural
                      construction materials with excellent mechanical properties
                      and good environmental performance, are susceptible to
                      moisture, UV radiation, contamination, and especially fire.
                      Commercial systems provide protection and bond wood
                      materials, but they are usually not biodegradable, may
                      contain potentially harmful substances, and require
                      additional additives to ensure flame-retardant properties.
                      When used as an adhesive for solid wood, chitosan itaconate
                      achieves high bond strengths, with cohesive failure
                      occurring in the wood rather than in the adhesive joint
                      during tensile shear testing. In the production of
                      fiberboards with chitosan itaconate as binder, bending
                      strengths of up to 77 N·mm⁻² are achieved, surpassing
                      solid wood (approx. 70 N·mm⁻²) as well as conventional
                      OSB boards (approx. 25 N·mm⁻²). Thus, chitosan
                      itaconate, due to its easy applicability from aqueous
                      solution, offers a powerful and bio-based alternative to
                      conventional coating and binder systems and provides a
                      concrete contribution to sustainability in construction.},
      cin          = {316520},
      ddc          = {624},
      cid          = {$I:(DE-82)316520_20140620$},
      typ          = {PUB:(DE-HGF)11},
      doi          = {10.18154/RWTH-2025-09335},
      url          = {https://publications.rwth-aachen.de/record/1020926},
}