Branched Polyurethanes Based on Synthetic Polyhydroxybutyrate with Tunable Structure and Properties
Open Access
- 25 July 2018
- Vol. 10 (8), 826
- https://doi.org/10.3390/polym10080826
Abstract
Branched, aliphatic polyurethanes (PURs) were synthesized and compared to linear analogues. The influence of polycaprolactonetriol and synthetic poly([R,S]-3-hydroxybutyrate) (R,S-PHB) in soft segments on structure, thermal and sorptive properties of PURs was determined. Using FTIR and Raman spectroscopies it was found that increasing the R,S-PHB amount in the structure of branched PURs reduced a tendency of urethane groups to hydrogen bonding. Melting enthalpies (on DSC thermograms) of both soft and hard segments of linear PURs were higher than branched PURs, suggesting that linear PURs were more crystalline. Oil sorption by samples of linear and branched PURs, containing only polycaprolactone chains in soft segments, was higher than in the case of samples with R,S-PHB in their structure. Branched PUR without R,S-PHB absorbed the highest amount of oil. Introducing R,S-PHB into the PUR structure increased water sorption. Thus, by operating the number of branching and the amount of poly([R,S]-3-hydroxybutyrate) in soft segments thermal and sorptive properties of aliphatic PURs could be controlled.Keywords
Funding Information
- European Regional Development Fund (01R16P00718)
This publication has 17 references indexed in Scilit:
- Synthesis, kinetics of photo-dimerization/photo-cleavage and physical properties of coumarin-containing branched polyurethanes based on polycaprolactonesExpress Polymer Letters, 2016
- Cu(I) Modification duringγ-Fe2O3Nanoparticles Synthesis and Subsequent CharacterizationJournal of Chemistry, 2015
- Synthesis of blocked and branched waterborne polyurethanes for pigment printing applicationsJournal of Applied Polymer Science, 2015
- Critical parameters in designing segmented polyurethanes and their effect on morphology and properties: A comprehensive reviewPolymer, 2015
- Polyester-Based (Bio)degradable Polymers as Environmentally Friendly Materials for Sustainable DevelopmentInternational Journal of Molecular Sciences, 2014
- Membrane adsorbers comprising grafted glycopolymers for targeted lectin bindingJournal of Applied Polymer Science, 2014
- The effect of varying soft and hard segment length on the structure–property relationships of segmented polyurethanes based on a linear symmetric diisocyanate, 1,4-butanediol and PTMO soft segmentsPolymer, 2012
- Highly branched polyurethane: Synthesis, characterization and effects of branching on dispersion of carbon nanotubesComposites Part B: Engineering, 2012
- Structural engineering of polyurethane coatings for high performance applicationsProgress in Polymer Science, 2007
- β‐Butyrolactone polymerization initiated with tetrabutylammonium carboxylates: A novel approach to biomimetic polyester synthesisJournal of Polymer Science Part A: Polymer Chemistry, 2002