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Structural, topographical, and mechanical characteristics of purified polyhydroxyoctanoate polymer
Author(s) -
Sofińska Kamila,
Barbasz Jakub,
Witko Tomasz,
Dryzek Jerzy,
Haraźna Katarzyna,
Witko Małgorzata,
KryściakCzerwenka Joanna,
Guzik Maciej
Publication year - 2019
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.47192
Subject(s) - thermogravimetric analysis , materials science , polymer , differential scanning calorimetry , gel permeation chromatography , chloroform , acetone , polymer chemistry , spectroscopy , dynamic mechanical analysis , microscopy , surface roughness , chemical engineering , composite material , analytical chemistry (journal) , chemistry , organic chemistry , optics , physics , quantum mechanics , engineering , thermodynamics
Insight into the topographic and mechanical properties of biomaterials allows for efficient selection of a material for a specific application. Here, atomic force microscopy (AFM) and force spectroscopy were exploited to reveal the topographic and mechanical characteristics of charcoal‐purified, solvent‐cast polyhydroxyoctanoate (PHO) film. The root mean square surface roughness of a PHO surface derived from ethyl acetate, acetone, or chloroform solution was 13.2, 11.5, or 30.9 nm, respectively, for 100 μm 2 AFM images. The distribution of the local Young's modulus had a maximum of 25.4, 14.1, and 12.6 MPa for PHO films obtained from ethyl acetate, acetone, and chloroform solution, respectively. The positron annihilation spectroscopy measurements allowed us to determine the free volume in the polymer film structure (9.38%). Moreover, a number of additional techniques (X‐ray diffraction, thermogravimetric analysis, differential scanning calorimetry, gel permeation chromatography, NMR, infrared spectroscopy, and polarized light microscopy) were used to reveal PHO features. © 2018 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019 , 136 , 47192.