Supramolecular Interactions in Hybrid Polylactide Blends—The Structures, Mechanisms and Properties

Abstract

The conformation of polylactide (PLA) chains can be adjusted by supramolecular interactions (the formation of hydrogen bonds or host-guest complexes) with appropriate organic molecules. The structures formed due to those intermolecular interactions may act as crystal nuclei in the PLA matrix (“soft templating”). In this review, the properties of several supramolecular nucleating systems based on synthetic organic nucleators (arylamides, hydrazides, and 1,3:2,4-dibenzylidene-d-sorbitol) are compared to those achieved with biobased nucleating agents (orotic acid, humic acids, fulvic acids, nanocellulose, and cyclodextrins) that can also improve the mechanical properties of PLA. The PLA nanocomposites containing both types of nucleating agents/additives are discussed and evaluated in the context of their biomedical applicability.

Nematic-to-Isotropic Phase Transition in Poly(L-Lactide) with Addition of Cyclodextrin during Abiotic Degradation Study

“…The solubility of β-CD in water is low (18.4 g/L) compared to that of α -CD and γ -CD (129.5 and 249.2 g/L, respectively) [ 10 ]. Methylation of β-CD, regardless of the degree of methylation, improves its water solubility by up to 50 times compared to unsubstituted β-CD.…”

Investigation Of Physical Properties Of Poly(Lactic Acid)/Eggshell Powder Composite Films

“…The most important feature when choosing a polymer is the crystallinity level of the polymer. Because the level of crystallinity affects (Kowalewska &Nowacka, 2020).…”

Valorization of municipal organic waste into purified lactic acid

“…Lactic acid production has been covered using catalysts (Razali and Abdullah, 2017) and fermentation with LAB (Martinez et al, 2013;Peng et al, 2020;Rawoof et al, 2021). Lactic acid purification by downstream processing have been studied (Ghaffar et al, 2014;Jantasee et al, 2017;Komesu et al, 2017a;Kumar et al, 2019;Li et al, 2021a) including prospects for polymer production (Hamad et al, 2018;Kowalewska and Nowacka, 2020;Michalski et al, 2019;Riaz et al, 2018;Yildirim et al, 2018). These reviews concentrate mainly on few steps in the value chain creating a need for a holistic review of these steps from carbon source until downstream processing.…”