000132109 001__ 132109
000132109 005__ 20240319081009.0
000132109 0247_ $$2doi$$a10.1016/j.polymer.2022.125363
000132109 0248_ $$2sideral$$a131572
000132109 037__ $$aART-2022-131572
000132109 041__ $$aeng
000132109 100__ $$aLu, Ru-Qiang
000132109 245__ $$aSupramolecular hierarchical polyurethane elastomers for thermal and mechanical property optimization
000132109 260__ $$c2022
000132109 5060_ $$aAccess copy available to the general public$$fUnrestricted
000132109 5203_ $$aSupramolecular chemical designs that integrate complementary hydrogen bond donor and acceptor complexes in hierarchical polyurethane elastomers are reported. N2,N6-bis(2-hydroxyethyl)pyridine-2,6-dicarboxamide (PDA) and 5,5-bis(3-hydroxypropyl)barbituric acid (BBA) react with 4,4'-methylenediphenyl diisocyanate (MDI) to produce hard segments capable of multiple intermolecular hydrogen bonds in MDI-PDA/BBA-poly(tetramethylene oxide) (PTMO) polyurethanes. The addition of PDA facilitates the formation of a supramolecular complex, and BBA affords greater intersegmental mixing. As a result, these polyurethanes exhibit higher glass transition temperatures (Tg) and greater strain hardening/strengthening under tensile deformation than a microphase-separated MDI-butanediol (BDO)-PTMO analog. Additionally, increased PDA and BBA contents results in up to a 60 °C increase of Tg determined at 1 Hz via DMA relative to those determined by calorimetric measurements via DSC, which is considerably higher than the 15 °C Tg increase observed in the MDI-BDO-PTMO analog. These results highlight a significant interplay between intersegmental mixing and supramolecular hydrogen bond interactions for the design of robust hierarchical elastomers.
000132109 540__ $$9info:eu-repo/semantics/openAccess$$aby-nc-nd$$uhttp://creativecommons.org/licenses/by-nc-nd/3.0/es/
000132109 590__ $$a4.6$$b2022
000132109 591__ $$aPOLYMER SCIENCE$$b18 / 85 = 0.212$$c2022$$dQ1$$eT1
000132109 592__ $$a0.8$$b2022
000132109 593__ $$aMaterials Chemistry$$c2022$$dQ1
000132109 593__ $$aPolymers and Plastics$$c2022$$dQ1
000132109 593__ $$aOrganic Chemistry$$c2022$$dQ1
000132109 594__ $$a7.4$$b2022
000132109 655_4 $$ainfo:eu-repo/semantics/article$$vinfo:eu-repo/semantics/acceptedVersion
000132109 700__ $$0(orcid)0000-0002-8932-9085$$aConcellón, Alberto$$uUniversidad de Zaragoza
000132109 700__ $$aWang, Pan
000132109 700__ $$aSwager, Timothy M.
000132109 700__ $$aHsieh, Alex J.
000132109 7102_ $$12013$$2765$$aUniversidad de Zaragoza$$bDpto. Química Orgánica$$cÁrea Química Orgánica
000132109 773__ $$g260 (2022), 125363 [11 pp.]$$pPolymer$$tPolymer$$x0032-3861
000132109 8564_ $$s2421109$$uhttps://zaguan.unizar.es/record/132109/files/texto_completo.pdf$$yPostprint
000132109 8564_ $$s1587776$$uhttps://zaguan.unizar.es/record/132109/files/texto_completo.jpg?subformat=icon$$xicon$$yPostprint
000132109 909CO $$ooai:zaguan.unizar.es:132109$$particulos$$pdriver
000132109 951__ $$a2024-03-18-14:56:44
000132109 980__ $$aARTICLE