Polymer Science and Functional Materials

Polymer science constitutes an important foundation of Moia's research trajectory. Her scientific contributions include polysaccharide-based networks, chemically modified natural polymers, cross-linked hydrogels, and materials whose functional behavior depends on their molecular organization and interaction with the surrounding environment.

These investigations address relationships among chemical composition, cross-linking density, functional groups, hydration, swelling, polymer-chain relaxation, diffusion, and transport through polymeric matrices.

Such structure–property relationships are central to advanced polymeric materials because relatively small changes in composition or environmental conditions may substantially alter water uptake, permeability, molecular transport, and functional performance.

Biopolymers and Natural Polysaccharides

Naturally derived polysaccharides represent a recurring element of Moia's work and provide continuity between her research in polymer chemistry and her later investigations involving renewable biological resources.

Her research has included starch, pectin, gum arabic, and other polysaccharide-containing systems evaluated as components of functional polymeric matrices.

Their chemical structure, ionizable groups, degree of functionalization, hydration behavior, cross-linking, and interaction with solvents directly influence properties such as swelling, diffusion, molecular release, adsorption, and material stability.

This experience places her work at the interface of polymer chemistry, biopolymer science, physicochemical characterization, and sustainable materials development.

Responsive Hydrogels and Molecular Transport

A relevant component of Moia's scientific production involves hydrogels designed to exhibit functional responses to their chemical environment.

In responsive polymeric systems, environmental conditions such as pH can modify the ionization state of functional groups within the polymer network. These changes may alter electrostatic interactions, hydration, swelling, polymer relaxation, and molecular diffusion.

Her work includes pectin-based and gum-arabic-based polymer networks in which water absorption, swelling kinetics, transport mechanisms, and molecular release were investigated using physicochemical and kinetic approaches.

Such studies contribute to understanding how material structure controls functional behavior, an essential principle in the development and evaluation of advanced polymeric systems.

Controlled and Sustained Molecular Release

Moia has contributed to the development and characterization of polymeric systems investigated as platforms for controlled or sustained release.

Her research includes starch-based hydrogels evaluated as potential drug-delivery carriers and pH-responsive gum-arabic-based hydrogels investigated for sustained release of potassium diclofenac under simulated intestinal conditions.

These studies combine polymer synthesis and modification with characterization of swelling, diffusional transport, polymer–solute interactions, and release kinetics.

Importantly, these experimental systems characterize material behavior under controlled conditions and should remain distinct from claims of clinical effectiveness unless corresponding biological and clinical evidence is available.

Environmental Remediation and Agricultural Applications

Moia's polymer research also extends beyond pharmaceutical delivery into environmental and agricultural applications.

Her scientific contributions include pectin-based hydrogels investigated as multifunctional systems for the release of agricultural nutrients and for removal of metal ions from water and wastewater.

This research demonstrates how the same fundamental properties that govern molecular transport through polymer networks — hydration, swelling, diffusion, functional-group interactions, and polymer relaxation — can be adapted to different technological objectives.

It also reinforces the broader relevance of biopolymer-based materials in sustainable technologies involving water management, contaminant removal, and controlled delivery.

Green Extraction Technologies

Green extraction constitutes another major component of Moia's research trajectory, particularly during her graduate studies in Agronomy.

Her work investigates strategies for recovering valuable compounds from agricultural and agro-industrial residues while reducing dependence on conventional extraction procedures associated with greater solvent consumption and environmental burden.

These approaches include pressurized-liquid extraction and other green-processing strategies designed to modify solvent behavior through controlled process conditions and thereby improve the recovery of selected chemical fractions.

The research combines extraction technology with chemical and physicochemical characterization, allowing recovered oils, polysaccharides, pectin, and bioactive compounds to be evaluated not only by extraction yield but also by their composition and functional characteristics.

Graduate Research in Green Technologies

Sustainable Materials and Circular Use of Biological Resources

A common principle across Moia's research is the transformation of renewable biological resources into scientifically characterized materials and chemical fractions with potential technological value.

Agro-industrial processing generates peels, seeds, fibers, and other residues that may contain oils, polysaccharides, phenolic compounds, and structurally useful macromolecules.

Recovering and characterizing these fractions contributes to more efficient use of biomass while creating potential raw materials for polymeric systems, pharmaceutical formulations, food technologies, biodegradable materials, agricultural applications, and other value-added products.

Her work therefore connects green chemistry, biopolymer science, materials characterization, extraction engineering, and circular use of biological resources.