A Bio-based healable/renewable polyurethane elastomer derived from L-Tyrosine/Vanillin/Dimer acid

Vanillin-Based Degradable Polyurethane Thermosets Demonstrating High Bio-Content and Mechanical Properties

“…(a) Stress–strain curves of VBD-TMP x and (b) mechanical performance of VBD-TMP 60 in this work compared with some biorenewable crosslinked polyurethanes in other research studies and commercial nonrenewable crosslinked polyurethanes. ,,,,,− …”

“…Therefore, bio-based thermosetting polyurethanes with different mechanical properties can be facilely prepared by tuning the content of crosslinker TMP. Within the context of biorenewable crosslinked polyurethanes, these VBD-TMP x lie at the high end of mechanical performances (Figure b). ,,,,,− They offer comparable tensile strengths and elongation at break values, but stand out in terms of their high bio-contents and degradability. It is also noteworthy that the stress–strain profiles for VBD-TMP 60 are comparable to or better than some of the commercial nonrenewable crosslinked polyurethanes, such as the Durethane R series and Desmodur MP-101 (Figure b).…”

“…It also has reactive sites such as hydroxyl and aldehyde, which can be used for chemical modification to generate valuable monomers. , This makes the synthesis of degradable aromatic polymers with different mechanical and thermal properties via vanillin and its derivatives one of the most promising strategies in terms of sustainability and economy. In recent years, some studies have reported the use of vanillin and its derivatives to prepare new bio-based polymers, including polyesters, polycarbonates, , Vitrimers, − and polyurethanes. , Our group recently synthesized bio-based dialdehyde and trialdehyde monomers using vanillin and constructed fully bio-based Vitrimers with high thermal/mechanical performances almost comparable to traditional thermosets . Moreover, the fully bio-based Vitrimers can realize the closed-loop recyclability via proven industrial methods, demonstrating promising potential for replacing traditional thermosets.…”

“…In recent years, some studies have reported the use of vanillin and its derivatives to prepare new bio-based polymers, including polyesters, 23 polycarbonates, 24,25 Vitrimers, 26−28 and polyurethanes. 29,30 Our group recently synthesized bio-based dialdehyde and trialdehyde monomers using vanillin and constructed fully bio-based Vitrimers with high thermal/mechanical performances almost comparable to traditional thermosets. 31 Moreover, the fully bio-based Vitrimers can realize the closed-loop recyclability via proven industrial methods, demonstrating promising potential for replacing traditional thermosets.…”

Highly transparent polyurethane thermosets with tunable properties and enzymatic degradability derived from polyols originating from hemicellulosic sugars

“…11, the PU networks produced in this work exhibited comparable or higher tensile strength and elongation at break than most biobased PU thermosets reported in the literature or non-renewable commercially available crosslinked polyurethanes. 3,6,[48][49][50][51][52][53][54][55][56][57][58][59] The attractive features of the developed PU thermosets such as good and easily tunable mechanical performance, including a very broad range of elongation at break (15-188%), Young's moduli (6.1-648.8 MPa) and tensile strength (3.3-31.1 MPa), together with their high heat resistance and good optical transparency could cement these PUs as a promising class of high-performance amorphous polyurethane materials.…”