Synthesis, biological efficiency evaluation and application of sodium alginate-based polyurethane dispersions using cycloaliphatic isocyanate, as antibacterial textile coating

Abstract

In the present project sodium alginate-based polyurethane dispersions were synthesized by two shot processes, using isophorone diisocyanate, polyethylene glycol (Mn-300), dimethylol propionic acid as internal emulsifier along with other reagents including triethylamine and dibutyltindilaurate catalyst. Molecular characterization was performed by Fourier transform infrared spectroscopy and proton nuclear magnetic resonance spectroscopy. Physical properties were observed and samples were found to be translucent yellow with a stability of more than one year. Biological properties such as blood hemolytic and antibacterial action were also noted in order to check if the samples can be used inside human body for bandage coatings. Synthesized dispersions were found to have considerable blood hemolytic activity and good antibacterial activity. After the complete characterization, dispersions were applied on polycotton blend fabric (50/50). After the treatment, fabric was analyzed for its tear strength, tensile strength pilling resistance and morphological properties by scanning electron microscopy. Fabric treated with polyurethane dispersions has decreased tear strength, enhanced tensile strength, improved pilling resistance and more intact appearance as compared to the untreated fabric.

Advances on alginate use for spherification to encapsulate biomolecules

“…Alginate is Generally Recognized as Safe (GRAS), being nontoxic, nonantigenic, satisfactorily biocompatible, and sufficiently biodegradable (Lee & Mooney, 2012). As a result of its physicochemical properties, alginate is used for a large variety of technical applications, as a coating material in textile industry (Misbah et al, 2019) or as a disintegrating agent for tablets. Alginate is also commonly found in cosmetic (Adli et al, 2020), pharmaceutical, medical (Shi et al, 2020) Matrix for encapsulation of volatiles constituents.…”

Comparison of Immobilized and Free Amyloglucosidase Process in Glucose SyrupsProduction from White Sorghum Starch

“…Alginate is as acidic linear polysaccharide adopted in several applications as a coating material in textile industry, [27,28] or as a disintegrating agent for tablets. It is, also, used in cosmetic, [27,29] pharmaceutical, and medical application, [27,30] as well as in food industries as thickener and stabilizer [27,31] .…”

Phytobioactive compounds as therapeutic agents for human diseases: A review

“…Bacteria form biofilms both on biotic and abiotic surfaces. Biofilms help bacteria in spreading infections by preventing them from antibiotics and the host immune system (Maqbool et al, 2019) Quorum sensing (QS) is an intercellular communication process adopted by both Gram-negative and Gram-positive bacteria which is based on the secretion and detection of external signal molecules (Misbah Bhatti et al, 2021). In the form of biofilm, bacteria communicate with each other via quorum sensing.…”

“…Quorum sensing (QS) is an intercellular communication process adopted by both Gram‐negative and Gram‐positive bacteria which is based on the secretion and detection of external signal molecules (Misbah Bhatti et al, 2021 ). In the form of biofilm, bacteria communicate with each other via quorum sensing.…”