ArticleInternational journal of molecular sciences2026
Pullulan Fatty Ester Nanocoatings with Tunable Surface Wettability and Bio-Inert Surface Properties.
Article in International journal of molecular sciences, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Polysaccharide derivatives with tunable hydrophobicity offer a versatile platform for tailoring material properties through controlled chemical modification. In this study, pullulan was functionalized with saturated fatty acids (C14-C18) via N,N-carbonyldiimidazole-mediated esterification, yielding degrees of substitution between 0.24 and 0.77. The effect of alkyl chain length and substitution levels on the thermal, structural, and surface properties of the resulting pullulan esters was systematically investigated. Increasing chain length enhanced thermal stability and promoted structural ordering, with stearate-modified pullulan exhibiting melting transitions at 40-42 °C and higher degradation temperatures (≥312 °C). Spin-coated nanoscale coatings (110-150 nm thick) exhibited extremely smooth surfaces (S
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