Non-isocyanate poly(amide-hydroxyurethane)s from sustainable resources

Abstract

A one-pot melt polymerization of plant oil-based monomers and diamines afforded film-forming, isocyanate-free poly(amide-hydroxyurethane)s with processability and mechanical integrity.

Moisture‐mediated intrinsic self‐healing of modified polyurethane urea polymers

“…FT‐IR analyses were carried out to observe the hydrogen bond cleavage in the self‐healing polymer with water when it is exposed to moisture at different relative humidities. Variable temperature FT‐IR spectroscopy is described as a method of choice to study hydrogen bonding events in polymers and oligomers based on (NH) and (CO) frequency shifts in their hydrogen bonded and free state . That method was used for polyurethanes and polyureas proving the dissociation of hydrogen bonds as a function of temperature.…”

Polymers Based on Cyclic Carbonates as Trait d'Union Between Polymer Chemistry and Sustainable CO2 Utilization

“…[10a, 103] Methyl 9-decenoate (9-DAME)i sap roduct of the ethenolysis of methyl oleate (MO). [105] 3f reacted with diaminesl eadingt op oly(amide-hydroxyurethane)s through 5CC ring openinga nd amidation of the ester functionality. [105] 3f reacted with diaminesl eadingt op oly(amide-hydroxyurethane)s through 5CC ring openinga nd amidation of the ester functionality.…”

“…Comparison of nonsustainable (top) and sustainable (bottom) strategies for:a ,b)The glycidylation of building blocksdisplaying multiple hydroxy groups; c, d) the esterification of building blocks with multiple carboxylic acids with GD;e,f)the epoxidation of building blocksw ith multiple olefins. Finally,w hereas using sacrificial peroxyacids such as m-CPBA is convenienta tt he laboratory scalef or the epoxidation of olefinic groups (Scheme23e), [105,106,175] this strategy is not regarded as sustainable. Reviews moieties (Scheme23c).…”

“…[147] In principle, this method could also be appliedt ot ransesterifications with GD or GC (Scheme 23 d). [83,105,120,133,134,147,157,167,175,184] For more challenging internal epoxides,e ven harsher reaction conditions, [106,181] the use of supercritical CO 2 ,a nd/orl ong reaction times (up to 4-7 d) have been reported. [210] The use of supported Mo, Ti,T a, or Wc atalysts in the presence of potentially renewable H 2 O 2 as oxidant (Scheme23f)i su nder investigation as ag reener method for the epoxidation of olefinicc ompounds such as fatty acids and vegetableo ils that are precursorsi nt he synthesis of bio-based carbonates.…”

The influence of POSS nanoparticles on selected thermal properties of polyurethane-based hybrids

“…This reaction is quite fast and very intense, so polyurethane materials are easy to make from the chemical point of view. In addition, recently environmental and safety concerns motivated the design of polyurethane materials from other kinds of monomers and macromonomers [10]. Elastomeric polyurethanes consist of the so-called soft segments, typically an OH terminated flexible polyether or polyester, and the hard segments, typically a sequence of a diisocyanate and a short diol.…”