Novel applications of castor oil based polyurethanes: a short review

Abstract

Nowadays increasing interest is observed for using of bio derived products replacing petroleum based materials. This may reduce the fuel consumption and result in producing of materials with lower envi ronmental impact. One of such substances is vegetable oil, which possesses unique chemical structure and consists of unsaturation sites, epoxies, hydroxyls, esters and other functional groups along with inherent flu idity characteristics. Such outstanding features enable them to undergo various chemical transformations producing low molecular weight polymeric materials with versatile applications. Our review discusses the synthesis of polyurethane from castor oil and provides an insight of its prominent applications of castor oil based polyurethane as hybrid materials, interpenetrating polymer networks, foams, adhesives, coatings.

Kinetics, Thermodynamics, and Isothermic Evaluation in Sorption Study of Hazardous Dye Using Sodium Dodecylsulfate Physically Impregnated in Polyester‐Type Polyurethane Foam

“…Similarly, a stock solution of SDS (1 × 10 −3 mol L −1 ) was prepared by simple dissolution of 0.144 g of SDS in 500 mL of water. Polyester‐type PUF synthesized from castor oil that had a density of ~0.3 g cm −3 was used throughout the experiment (Shirke et al, ). PUF was cut into cylindrical shape of similar dimension, i.e., 3 cm diameter, 1.5 cm height, and 200 ± 10 mg weight to ensure the uniform adsorption of CV.…”

“…The adsorption process is commonly used in industry because of its simple operation, high efficiency, and cost effectiveness with good potential for reuse and recovery (Altaher, Khalil, & Abubeah, 2014;Dallago, Smaniotto, & Oliveira, 2005). Studies have reported that highly functional porous materials act as suitable adsorbents due to the existence of polar and nonpolar groups in their chemical structures that impart effective and excellent chemical as well as thermal resistance properties (Sanghi & Bhattacharya, 2002;Shirke, Dholakiya, & Kuperkar, 2015). Polyester-type polyurethane foam (PUF) derived from vegetable oil is widely used as an effective absorbent for the elimination of hazardous dyes.…”

Progress in polydimethylsiloxane-modified waterborne polyurethanes

“…Considering the existence of several excellent reviews highlighting the recent progress in the applications of WPU, in which the current and potential application elds of PDMS-modied WPU are already contained, an Application section is therefore not included in this review and the reader should be referred to those reviews to obtain the in-depth coverage. 17,18,[79][80][81][82][83] Though the PDMS-modied WPU has made great progress in recent years and has already been commercialized in some elds like textile nishing, several aspects of challenges still remain. First, more types of reactive PDMS with different molecular weights, low cost, and high purity are needed for both industry and academia, which calls for more efforts from both researchers and engineers in silicone industry.…”

Reinforcement of Castor Oil-Based Polyurethane with Surface Modification of Attapulgite

“…The advantages of these bio-based materials are their biocompatibility, biodegradability, low cost, good thermal properties, and acceptable specific strength properties [22,23]. In comparison to other vegetable oils, castor oil has on average 2.7 hydroxyls per triglyceride and can therefore be directly used to synthesize PU materials [24]. However, the resulting pure castor oil-based PU is too soft to meet application requirements in some fields.…”