An efficient approach for the synthesis of thermoset polyurethane acrylate polymer and its film properties

Abstract

The new allyl((2-oxo-1,3-dioxolan-4-yl)methyl) carbonate (ADC) monomer was synthesized by reacting glycerol carbonate with allylchloroformate. The structure of the monomer was characterized by FT-IR, 1 H NMR, UV-visible, and mass spectroscopies. The ADC monomer was copolymerized with Methyl methacrylate and butyl Acrylate by solution polymerization technique. Further, the ADC copolymer was cross-linked with 1,3-diaminopropane which yields polyurethane acrylate copolymer. The cured film was characterized by FT-IR, 1 H NMR spectroscopy and for the Gel content. The uncured and cured films were subjected to thermal analysis, and it was observed that the uncured film undergoes two-step thermal decomposition, whereas the cured film undergoes single-step thermal decomposition with comparably high thermal stability. The biodegradability of uncured films is directly proportional to the conc. of ADC monomer and inversely proportional to its cured film. The cured and uncured films of ADC copolymers were subjected to evaluate their optical and mechanical properties. The dramatic improvement was observed in the optical and mechanical properties of cured ADC copolymer at 5-7 wt.% of ADC monomer.

Acrylic‐ester‐polyol based novel two‐component polyurethane clear coat: Evaluation of performance characteristics

“…The transmittance phenomenon highly depends upon the crosslink density of the polymer. The higher transparency of the coating was ascribed to the better crosslinking of the copolymer whereas the lower crosslink density resulted in a lower degree of transparency in the PU coating 19–20 . Sun et al 21 reported that the irregularity of the polymer chain due to weak intermolecular force resulted in the formation of the amorphous state that provides better transparency to the PU coatings.…”

“…The higher transparency of the coating was ascribed to the better crosslinking of the copolymer whereas the lower crosslink density resulted in a lower degree of transparency in the PU coating. [19][20] Sun et al 21 reported that the irregularity of the polymer chain due to weak intermolecular force resulted in the formation of the amorphous state that provides better transparency to the PU coatings. Hence, as observed from the test results reported in Table 3, the coatings aePU-5 and aePU-6 at AP:EP ratio of 60:40 and 50:50 exhibited optimum performance.…”

Plant-Based Nonactivated Olefins: A New Class of Renewable Monomers for Controlled Radical Polymerization

“… a (a and c) Synthesis of glycerol-based carbonate monomers ( M1 – M3 ) using a one-pot approach. (b) Two-step literature procedures for the synthesis of the same monomers. ,,, . …”

Polyurethane Thermosets Using Lipidic Poly(α‐Hydroxyketone)

“…Since their discovery in 1930 by Otto Bayer [1], polyurethanes (PU)s production and use keep growing interest. Various physical aspects of PU materials have been investigated including coatings [2,3], adhesives [4,5], rigid or soft foams [6][7][8] and thermosets [9]. Based on the alcohol-isocyanate reaction, a well-understanding relationship between the structure of the precursors (mainly polyether polyol or polyester polyol [10][11][12]) and the properties of the resulting materials has already been established [13,14].…”