Synthesis, Structure and Properties of MelamineB pTHF-Urethane Supramolecular Compounds.
(2003) In Macromolecular Chemistry and Physics 204(1). p.52-60- Abstract
- The properties of melamine based supramolecular compounds have been studied with rheological, thermal, mechanical, dielectric and scattering techniques and compared with similar covalently bonded materials. The complexes are based on a linear pTHF-diol ([bar M ]n = 1 000) connected via a diisocyanate with melamine. The results obtained show that, despite of the material's low molecular weight (< 2 000 g · mol-1), it has properties typical for high molar mass polymers. The material has a high modulus above the glass transition temperature, and shows behavior similar to a semi-crystalline material. This is attributed to the presence of the hydrogen bonds, in combination with phase separation giving rise to hard domain formation. In... (More)
- The properties of melamine based supramolecular compounds have been studied with rheological, thermal, mechanical, dielectric and scattering techniques and compared with similar covalently bonded materials. The complexes are based on a linear pTHF-diol ([bar M ]n = 1 000) connected via a diisocyanate with melamine. The results obtained show that, despite of the material's low molecular weight (< 2 000 g · mol-1), it has properties typical for high molar mass polymers. The material has a high modulus above the glass transition temperature, and shows behavior similar to a semi-crystalline material. This is attributed to the presence of the hydrogen bonds, in combination with phase separation giving rise to hard domain formation. In comparison with a covalently bonded and a low molecular weight material of similar composition, the supramolecular compounds have a higher and more temperature dependent viscosity. By exchanging parts of the pTHF with a low molecular weight diol, in our case hexane diol, the mechanical properties at room temperature could be modified to a stiffer but more brittle material. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/129556
- author
- Öjelund, K ; Loontjens, T ; Steeman, P ; Palmans, A and Maurer, Frans LU
- organization
- publishing date
- 2003
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Macromolecular Chemistry and Physics
- volume
- 204
- issue
- 1
- pages
- 52 - 60
- publisher
- John Wiley & Sons Inc.
- external identifiers
-
- wos:000181508300006
- scopus:0037472319
- ISSN
- 1521-3935
- DOI
- 10.1002/macp.200290055
- language
- English
- LU publication?
- yes
- additional info
- The information about affiliations in this record was updated in December 2015. The record was previously connected to the following departments: Polymer and Materials Chemistry (LTH) (011001041)
- id
- 0e1d4072-6f37-4811-a568-a245f099191e (old id 129556)
- date added to LUP
- 2016-04-01 11:53:36
- date last changed
- 2022-01-26 19:48:18
@article{0e1d4072-6f37-4811-a568-a245f099191e, abstract = {{The properties of melamine based supramolecular compounds have been studied with rheological, thermal, mechanical, dielectric and scattering techniques and compared with similar covalently bonded materials. The complexes are based on a linear pTHF-diol ([bar M ]n = 1 000) connected via a diisocyanate with melamine. The results obtained show that, despite of the material's low molecular weight (< 2 000 g · mol-1), it has properties typical for high molar mass polymers. The material has a high modulus above the glass transition temperature, and shows behavior similar to a semi-crystalline material. This is attributed to the presence of the hydrogen bonds, in combination with phase separation giving rise to hard domain formation. In comparison with a covalently bonded and a low molecular weight material of similar composition, the supramolecular compounds have a higher and more temperature dependent viscosity. By exchanging parts of the pTHF with a low molecular weight diol, in our case hexane diol, the mechanical properties at room temperature could be modified to a stiffer but more brittle material.}}, author = {{Öjelund, K and Loontjens, T and Steeman, P and Palmans, A and Maurer, Frans}}, issn = {{1521-3935}}, language = {{eng}}, number = {{1}}, pages = {{52--60}}, publisher = {{John Wiley & Sons Inc.}}, series = {{Macromolecular Chemistry and Physics}}, title = {{Synthesis, Structure and Properties of MelamineB pTHF-Urethane Supramolecular Compounds.}}, url = {{http://dx.doi.org/10.1002/macp.200290055}}, doi = {{10.1002/macp.200290055}}, volume = {{204}}, year = {{2003}}, }