Quantitative analysis of nanomechanical properties of polyhydroxyalkanoate polymer films

IF 6.5 2区材料科学 Q1 CHEMISTRY, APPLIED

Progress in Organic Coatings Pub Date : 2025-02-03 DOI:10.1016/j.porgcoat.2025.109092

Fares D.E. Ghorabe , Ashish T.S. Ireddy , Pavel Zun , Mikhail Zhukov , Dmitry A. Kozodaev , Tatiana G. Volova , Ekaterina I. Shishatskaya , Ekaterina V. Skorb

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引用次数: 0

Abstract

The mechanical properties of polymers, particularly at the nanoscale, are critical for their performance in various applications. This study investigates the nanomechanical properties of three polyhydroxyalkanoate (PHA) polymers using Atomic Force Microscopy (AFM): poly(3-hydroxybutyrate) [(P3HB)], poly(3-hydroxybutyrate-co-valerate) [(P3HBV)], and poly(3-hydroxybutyrate-co-4-hydroxybutyrate) [(P3HB4HB)]. In addition, three different thicknesses of P3HBV films (10 μm, 30 μm, and 60 μm) were analyzed, labeled as 10-P3HBV, 30-P3HBV, and 60-P3HBV, respectively. AFM-based force-distance curves allowed for the precise measurement of surface properties; the investigated material was analyzed to determine the surface Young's modulus (using the Derjaguin–Muller–Toporov (DMT) method), adhesion, stiffness, and height domains.

The results reveal that polymer films composition and thickness significantly influence surface nanomechanical characteristics, pore size, wettability, and material crystallinity. Thicker films exhibited distinct mechanical and surface property profiles, emphasizing the role of polymer chain interactions and structural organization. These findings underscore the importance of tailoring polymer composition and structural parameters to optimize their mechanical properties for targeted applications, particularly in the biomedical field. This comprehensive nanoscale characterization provides valuable insights into the design and developing of PHA-based materials for diverse technological and biomedical uses.

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来源期刊

Progress in Organic Coatings 工程技术-材料科学：膜

CiteScore

11.40

自引率

15.20%

发文量

577

审稿时长

48 days

期刊介绍： The aim of this international journal is to analyse and publicise the progress and current state of knowledge in the field of organic coatings and related materials. The Editors and the Editorial Board members will solicit both review and research papers from academic and industrial scientists who are actively engaged in research and development or, in the case of review papers, have extensive experience in the subject to be reviewed. Unsolicited manuscripts will be accepted if they meet the journal''s requirements. The journal publishes papers dealing with such subjects as: • Chemical, physical and technological properties of organic coatings and related materials • Problems and methods of preparation, manufacture and application of these materials • Performance, testing and analysis.