Document Type

Article

Publication Date

4-17-2024

Abstract

Polyurethane (PUs) are an incredibly versatile class of polymer due to the broad range of chemistries that may be utilized in their synthesis to create an abundance of types and properties. As an example, PU elastomers have outstanding chemical, mechanical, and physical properties together with excellent biocompatibility. An increasing number of people are becoming interested in using sustainable biomass feedstock to produce biobased chemical products. The bark of birch trees contains naturally occurring cyclic aliphatic diol known as botulin which is found in substantial level. In this research, several types of bio-based polyurethane (PU) elastomers with exceptional mechanical characteristics, solvent resistance, and thermal stability have been developed without the requirement for a catalyst using betulin and castor oil (CO) as bio-based polyols. The effects of the hydroxyl ratio between botulin and CO were considered while thoroughly investigating the chemical structure and properties of bio-based PU elastomers. Because of the presence of many hydrogen bonds, stiff ring planes, and other fundamental components in the PU structure, the resulting PU elastomers demonstrated exceptional mechanical properties. They observed maximum tensile strength around 31.6 MPa with a tensile strain of more than 200% could support 1×105 times their weight. The betulin-derived PUs elastomer has a temperature breakdown point of more than 3000 C. This work demonstrated making high-performing, environmentally friendly polyurethane (PUs) materials with a biomass component of at least 75%.

Download

Share

COinS