Self-Healable and Ultrahydrophobic Polyurethane-POSS
Hybrids by Diels–Alder “Click” Reaction: A New
Class of Coating Material
Posted on 2018-06-22 - 15:30
Polyurethane
functionalized with pendant furan moiety (FPU) was prepared using
a novel chain extender (FA-FGE) which was obtained from the reaction
between furfurylamine (FA) and furfuryl glycidyl ether (FGE). This
furan containing PU (FPU) was grafted with maleimide functionalized
polyhedral oligomeric silsesquioxanes (POSS maleimide isobutyl, POSS-M)
via Diels–Alder (DA) “click” reaction. The resultant
DA adducts of FPU-POSS-M hybrid material showed a remarkable increase
in water contact angle (WCA) from 84° to 141.3°. This remarkable
increase in the WCA is due to the combined effect of the grafting
of hydrophobic POSS-M units as well as the increased micro- and nanoscale
surface roughness, as evidenced by AFM and FESEM analyses. The self-healing
characteristic of this organic–inorganic hybrid was evaluated
by the tensile test as well as by monitoring the disappearance of
the crack using optical microscopy. The formation of FPU-POSS-M hybrid
material was confirmed by GPC, FT-IR, and 1H NMR analyses,
and their thermoreversible nature was confirmed by DSC analysis. The
tensile strength and tensile modulus of the FPU-POSS-M hybrid film
were much higher than those of pristine FPU. The surface hardness
and the penetration depth of the nanoindent in FPU and FPU-POSS-M
hybrid coating were evaluated using the nanoindentation experiment.
The adhesion property of the hybrid material with the metal surface
was studied by lap shear test. TGA analysis showed a significant improvement
in thermal stability of the FPU-POSS-M hybrid material. This self-healable
and ultrahydrophobic FPU-POSS-M hybrid material can be used in specialty
coating application.
CITE THIS COLLECTION
DataCite
3 Biotech
3D Printing in Medicine
3D Research
3D-Printed Materials and Systems
4OR
AAPG Bulletin
AAPS Open
AAPS PharmSciTech
Abhandlungen aus dem Mathematischen Seminar der Universität Hamburg
ABI Technik (German)
Academic Medicine
Academic Pediatrics
Academic Psychiatry
Academic Questions
Academy of Management Discoveries
Academy of Management Journal
Academy of Management Learning and Education
Academy of Management Perspectives
Academy of Management Proceedings
Academy of Management Review
Behera, Prasanta Kumar; Mondal, Prantik; Singha, Nikhil K. (2018). Self-Healable and Ultrahydrophobic Polyurethane-POSS
Hybrids by Diels–Alder “Click” Reaction: A New
Class of Coating Material. ACS Publications. Collection. https://doi.org/10.1021/acs.macromol.8b00583
or
Select your citation style and then place your mouse over the citation text to select it.
SHARE
Usage metrics
Read the peer-reviewed publication
AUTHORS (3)
PB
Prasanta Kumar Behera
PM
Prantik Mondal
NS
Nikhil K. Singha
KEYWORDS
Ultrahydrophobic Polyurethane-POSS HybridsFA-FGEFGEmaterialGPCfurfuryl glycidyl etherFESEM analyses1 H NMR analysesTGA analysisnovel chain extendernanoscale surface roughnesspendant furan moietyFT-IRAFMNew Classthermoreversible natureultrahydrophobic FPU-POSS-MFAsurface hardnessmaleimide functionalized polyhedral oligomeric silsesquioxanesmetal surfaceDSC analysisCoating Material Polyurethane functionalizedPOSS-M unitsnanoindentation experimentlap shear testadhesion propertyPOSS maleimide isobutylwater contact angleDA adductsspecialty coating applicationpenetration depthWCA