Hochschulschrift

Isocyanatfreie Herstellung von biobasierten Polyhydroxyurethanen (NIPU), NIPU-Nanokompositen und flexiblen NIPU-Schaumstoffen

Zusammenfassung: Isocyanate-based polyurethanes (PU) represent one of the most important polymer classes in everyday life, but experience severe challenges due to the safety issues of isocyanates. Moreover, the capability of employing bio-based raw materials is almost exclusively limited to polyol monomers. Non-isocyanate polyhydroxyurethanes (PHU), prepared by the polyaddition of environmentally benign cyclic carbonates and amine hardeners, hold great prospect to substitute PUs. Carbonated polyglycidylethers derived from bio-based polyols by chemical fixation of CO2 are among the most prominent examples of cyclic carbonates. According to the state-of-the-art there is a huge demand, especially within the PHU chemistry, for multifunctional and bio-based amine hardeners. Therefore, the aminolysis of polyglycidylethers and limonene dioxide with aqueous ammonia represents for the first time a versatile synthesis of multifunctional, bio-based -amino alcohols (AA) and does not require either organic solvents besides or tedious purification and leads to the identical feedstock for carbonates and amines. This study elucidates the influences of molecular architecture and amine content of multifunctional AA on the material properties and solvent swelling of PHUs.

Location
Deutsche Nationalbibliothek Frankfurt am Main
Extent
Online-Ressource
Language
Deutsch
Notes
Albert-Ludwigs-Universität Freiburg, Dissertation, 2016

Classification
Technische Chemie
Keyword
Schaumstoff
Herstellung
Polymere
Polyurethane
Schaumstoff
Nachwachsender Rohstoff
Chemie
Kohlendioxid

Event
Veröffentlichung
(where)
Freiburg
(who)
Universität
(when)
2016
Creator
Contributor

DOI
10.6094/UNIFR/11114
URN
urn:nbn:de:bsz:25-freidok-111145
Rights
Der Zugriff auf das Objekt ist unbeschränkt möglich.
Last update
25.03.2025, 1:51 PM CET

Data provider

This object is provided by:
Deutsche Nationalbibliothek. If you have any questions about the object, please contact the data provider.

Object type

  • Hochschulschrift

Associated

Time of origin

  • 2016

Other Objects (12)