Characterization of sustainable polyhydroxyls, produced from bio-based feedstock, and polyurethane and copolymer urethane-amide foams

Abstract

This manuscript presents data related to the research article entitled “Synthesis and characterization of sustainable polyurethane foams based on polyhydroxyls with different terminal groups” (DOI: 10.1016/j.polymer.2018.06.077) [1]. We provide Supplementary data on the chemical properties, in terms of FTIR characterization, of polyhydroxyls produced starting from bio-based feedstock (biosuccinic acid and 1,4 butandiol) and thermal properties (glass transition temperature-Tg and thermal degradation behavior) of polyurethane and copolymer urethane-amide foams manufactured from the aforementioned polyhydroxyls. The FTIR characterization elucidates the chemical structure of polyhydroxyls and allows to make some hypothesis on their reaction routes with the isocyanate molecules. The thermal characterization revealed that the addition of bio-based polyhydroxyls to the sample formulations improves both the glass transition and degradation temperature of the foams. These foamed products exhibit potential performances to be applied as a substitute for conventional polyurethane foams.

Chemically Functionalized Cellulose Nanocrystals as Reactive Filler in Bio-Based Polyurethane Foams

“…The morphological structure of the produced foam samples is reported in Figure 6 . The microstructure of semi-rigid foams [ 46 ] with a partially opened structure [ 47 ] is observed. The SEM micrographs highlight that the PU-Reference ( Figure 6 a) shows a cell dimension ranging around 400–300 µm, while the addition of the grafted CNC affects the dimension of the cell foams and the interconnection as well.…”

Dielectric Responses of Polyurethane/Zinc Oxide Blends for Dry-Type Cast Cold-Curing Resin Transformers

“…The incorporation of particles into polymeric matrix produce the interactions modifying the glass transition. It is more likely due to their high molecular weight that induced a reduction of mobility of the polymeric structure [ 50 ] and also percolation could play a role [ 49 ]. That is demonstrated on correlation with real part of complex permittivity.…”

Green to Blue Light Emitting CsPbBr3 Perovskite by Ligand Exchange and its Encapsulation by TiO2 for Tandem Effect in Photovoltaic Applications

“…26 The reaction between the earlier existing ligands OA, OAm and the new ligand α-ABA during the proposed ligand exchange is a probability that one cannot ignore. The probable surface reaction could lead to the formation of −CO−NH 2 (secondary amide), −NH 2 (primary amine), and NH 4 + species 27 which perhaps could be detected by specific strong IR peaks occurring 1680, 3400−3300, and 3024−3586 cm −1 , respectively. But the IR spectra of CsPbBr 3 and LE-CsPbBr 3 (SI Figure S5) did not show any such leads indicating the possibility of such surface reaction to be very smaller.…”