Antibacterial and biocompatible ABA-triblock copolymers containing perfluoropolyether and plant-based cardanol for versatile coating applications

Abstract

ABA-triblock copolymers were prepared via ATRP, using modified perfluoropolyether (PFPE) as a macroinitiator (Br–PFPE–Br) to form the B block, and 2-hydroxy-3-cardanylpropyl methacrylate (HCPM) as a monomer to form the A blocks.

Preparation of 3‐pentadecylphenol‐modified cellulose nanocrystal and its application as a filler to polypropylene nanocomposites having improved antibacterial and mechanical properties

“…Previous studies including ours show that cardanol having unsaturated hydrocarbons has the antibacterial property. [31][32][33][34] We further found that the antibacterial property of cardanol could be maintained after the UV irradiation that transforms the unsaturated alkyl groups to saturated ones. 31,33,38 In addition, Aegle marmelos (L.) Correa, Rhus chinensis, and Schlechtendalia chinensis containing PDP as one of their components have the antibacterial property.…”

“…[31][32][33][34] We further found that the antibacterial property of cardanol could be maintained after the UV irradiation that transforms the unsaturated alkyl groups to saturated ones. 31,33,38 In addition, Aegle marmelos (L.) Correa, Rhus chinensis, and Schlechtendalia chinensis containing PDP as one of their components have the antibacterial property. [39][40][41] Therefore, we used PDP having long alkyl group in this work to functionalize CNC to make a filler system having the antibacterial property and the compatibility with PP.…”

“…44,[91][92][93][94][95] The larger antibacterial activity value of f-CNC can be ascribed to the PDP moiety attached on CNC 43 because PDP is expected to have the antibacterial property from the studies by us and others. [31][32][33][38][39][40][41] It is well known that antibacterial moiety attached on the polymers and other substrates can improve the antibacterial property of them. 38,96,97 Therefore, the antibacterial property of CNC that had been ascribed to its intrinsically stiff structure was further improved by the attachment of PDP having the antibacterial property.…”

“…The antibacterial property of PP/CNC and PP/f-CNC against E. coli was evaluated by the film attachment method based on JIS Z 2801:2010 using neat PP as a control. 31 Figure 6 shows the photographic results and the calculated bacterial inhibition rates of the samples. Both PP/CNC and PP/f-CNC have the antibacterial property and it increases with increasing the filler content.…”

“…In this work, functionalized CNC (f-CNC) was prepared by grafting 3-pentadecylphenol (PDP) on the surface of CNC. PDP can be obtained by the hydrogenation of cardanol, a natural oil from cashew nut-shell having antibacterial property, [31][32][33][34] and has been used as a building block to increase the solubility of polymers such as polyimides (PI) and poly(4-vinylpyridine) (PVP) to organic solvents. [35][36][37] Since the direct functionalization of CNC with PDP was not possible, PDP was reacted with succinic anhydride (SA) to produce 4-oxo-4-(3-pentadecylphenoxy)butanoic acid (PDPBA), followed by the condensation reaction between the hydroxyl groups on CNC with the carboxylic acid group in PDPBA to produce f-CNC.…”