Fully biobased triblock copolyesters from l-lactide and sulfur-containing castor oil derivatives: Preparation, oxidation and characterization

Novel Castor Oil‐Derived Block Copolymers as Promising Candidates for Biological Applications: Biorelevant and Biocompatible

“…However, applications of castor oil‐based polymeric materials are not restricted to the industrial arena and could also be extended to a variety of biomedical applications as surgical sealants and glues, pharmacological patches, wound healing devices, and drug carriers to scaffolds for tissue engineering. This is mainly because as a vegetable oil, castor oil is a biobased raw material that can be metabolized in the human body, and therefore materials derived from it are potentially biocompatible . Moreover, the incorporation of vegetable oil moiety can enhance the biodegradation of the material …”

“…In this context, thiol‐ene additions (or thiol‐ene click reactions) are considered as a versatile and broadly applicable tool in polymer science . In that regard, Cádiz and co‐workers prepared a dihydroxy telechelic polyester for the ring opening polymerization of L‐lactide by thiol‐ene coupling of 2‐mercaptoethanol and 10‐undecylenic acid . Ameduri et al prepared mercaptoalcohols via the addition of mercaptoethyl ether to 10‐undecen‐1‐ol for the synthesis of telechelics and Heise and co‐workers coupled different thiol compounds to an unsaturated polyester …”

“…This is mainly because as a vegetable oil, castor oil is a biobased raw material that can be metabolized in the human body, and therefore materials derived from it are potentially biocompatible. [5] Moreover, the incorporation of vegetable oil moiety can enhance the biodegradation of the material. [6] One of the commercially available castor oil derived platform chemicals, 10-undecenoid acid or undecylenic acid, derived from ricinoleic acid, was used to prepare polyamides, [2] a variety of acyclic diene metathesis derived polyesters [7][8][9] as well as different cross-linked materials, [10] thus demonstrating its broad range of application possibilities.…”

“…[11,12] In that regard, Cádiz and co-workers prepared a dihydroxy telechelic polyester for the ring opening polymerization of L-lactide by thiol-ene coupling of 2-mercaptoethanol and 10-undecylenic acid. [5] Ameduri et al prepared mercaptoalcohols via the addition of mercaptoethyl ether to 10-undecen-1-ol for the synthesis of telechelics [13] and Heise and co-workers coupled different thiol compounds to an unsaturated polyester. [14] Within this contribution, we will discuss a completely complementary approach to synthesize a thioether-containing ω-hydroxyacid (TEHA), via the UV-induced free-radical thiol-ene reaction.…”

Fully bio-renewable multiblocks copolymers of poly(lactide) and commercial fatty acid-based polyesters polyols: Synthesis and characterization

“…A variety of polymers can be used as soft block [16,17,21,27,31,38,41], provided that they have a suitably low glass transition temperature, and that they can be obtained with proper terminal functional groups. Recently, the research focused on the development of fully biobased PLA-containing triblocks copolymers, by employing biorenewable soft blocks, such as amorphous polyhydroxyalkanoates [18,26], polymethide [28] and polyesters derived from castor oil [44].…”