In situ development of Zn/Cd‐incorporated poly(esteramide‐urethane) from sustainable resource

Abstract

It was for the first time we attempted to develop zinc and cadmium incorporated linseed oil based poly(esteramide-urethane) [Zn/Cd-LPEAUr], and investigated their structure, mechanism, and properties. The resin was synthesized in situ by the reaction of linseed oil derived fatty amide diol [HELA], divalent zinc/ cadmium acetate and toluylene-2, 4 (6), diisocyanate [TDI; 2-12 wt %] with minimal solvent. The structural elucidation of Zn/Cd-LPEAUr was carried out by FTIR, 1 H-NMR, and 13 C-NMR spectral techniques. TGA and DSC techniques were used to measure the thermal stability and curing behavior of these resins, respectively. The physicomechanical and chemical/corrosion resistance properties were investigated by standard laboratory methods. The performance of Zn/Cd-LPEAUr coating was compared with reported oil based polyesteramide. Antibacterial test of the resins were performed by agar diffusion method against E. coli and S. aureus, and compared with those of petroleum-based metal containing polyurethanes.

Synthesis and characterization of antibacterial polyurethane coatings from quaternary ammonium salts functionalized soybean oil based polyols

“…Besides castor oil with inherent hydroxyl groups, soybean oil is another important vegetable oil, that after introduction of hydroxyl groups, was widely applied for the preparation of polyurethanes [35][36][37]. There are some interesting reports regarding the preparation of vegetable oil-based biocidal polyurethanes [6], poly(urethane-acrylate)s [8], alkyd resins [7], and polyesteramides/poly(esteramide-urethane)s [38][39][40] via incorporation of silver, zinc, cadmium and boron particles. Recently, Larock and coworkers studied the mechanical and thermal properties of cationic polyurethane dispersions based on castor oil, methoxylated epoxidized soybean oil and acrylated epoxidized soybean oil as the soft segments.…”

Development and characterization of boron incorporated linseed oil polyurethanes

“…PEP, BPEPs, PEPU, and BPEPUs were synthesized by polyesterification and polyaddition reactions, respectively. The former synthesis reaction, following “single‐pot, multi step” reaction strategy, occurs in the absence of any solvent attributed to the inherent free flowing (fluidity) characteristic of polyols, which facilitates homogenous mixing of chain entanglements (formed during polymerization) and renders solubility 12–14, 21. The synthesis of BPEPUs (Fig.…”

“…The latter may prove as advantageous starting material for VSO PUs due to multitude of hydroxyls and long, aliphatic dangling chains present in their backbone. Furthermore, while the synthesis of PUs from some of the aforementioned resins is overall a cumbersome process involving higher energy and multiple steps, urethanation through polyols is comparatively less energy consuming process in terms of reaction temperature, time and the number of reaction steps involved 4, 5, 7–15…”

“…VSOs based systems are expected to perform better than their aromatic petro‐based counterparts owing to their (i) inherent flexibility and (ii) excellent physical and chemical properties viz., improved gloss, enhanced hydrolytic as well as thermal stability attributed to the hydrophobic nature of the constituent triglycerides 21, 28. Literature survey reveals that in the past only a few publications have appeared on metal/metalloid incorporated VSO polyesteramides and polyurethanes 11–15…”

New Antimicrobial Coating Compositions Based on 3,6-Dichloro Bezo[b]thiophene-2-Carbonyl Glutamic Acid. (Dcbtga) . Modified Polyesteramide Resins as Binder for Industrial Applications

“…Film biocides, which can be fungicide or algaecides, have been incorporated to prevent the growth of fungi and algae on applied surface coatings. Sharif Ahmad et al, have been used it as a starting materials for the development of polyetheramides, polyesteramides, polyesteramide urethanes and polyamide urethanes, as protective coating materials and as an effective antibacterial and biologically safe corrosion protective material [1][2][3][4][5][6]. Recently microbial activity of degradation can be realized.…”