Structure and properties of quaternary fulvic acid–intercalated saponite/poly(lactic acid) nanocomposites
Source abstract
Abstract
Abstract Fulvic acid (FA) was prepared from humate sodium and nitric acid, and then quaternary fulvic acid (QFA) was synthesized from FA. QFA–intercalated saponite (QFA–saponite) was prepared using the ultrasonic radiation method. To improve the thermal and mechanical properties of poly(lactic acid) (PLA), QFA–saponite/PLA nanocomposites were prepared from QFA–saponite and PLA using the solution intercalation method. The microstructure of QFA–saponite was characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM) and transmission electron microscopy (TEM), indicating successful modification of QFA. The XRD analysis also showed that the QFA–saponite/PLA nanocomposites consisted of intercalated and partially exfoliated structure. The thermal properties of the QFA–saponite/PLA nanocomposites were investigated by thermal gravimetric analysis (TGA) and differential scanning calorimetric (DSC) analysis. Moreover, the antibacterial properties of the QFA–saponite/PLA nanocomposites were studied. Because of the nanometer-sized dispersion of QFA–saponite in the PLA matrix, the QFA–saponite/PLA nanocomposites exhibited improved thermal and mechanical properties compared with pure PLA. When the content of QFA–saponite was 1 wt.%, the QFA–saponite/PLA nanocomposites exhibited optimum thermal and mechanical properties. The antibacterial properties of QFA–saponite were endowed to the PLA-based nanocomposites.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: biodegradable polymer synthesis and properties · Bone Tissue Engineering Materials · Therapeutic Uses of Natural Elements
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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