Hydrolytic degradation of isolated poly (B- hydroxybutyrate) granules

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DOIResolve DOI: http://doi.org/10.1016/0032-3861(94)90590-8
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TypeArticle
Journal titlePolymer
Volume36
Issue19
Pages41564162; # of pages: 7
AbstractThe kinetics of chain degradation of purified granules of poly(ß-hydroxybutyrate) in 3.0 N HCl at the boil were followed using gel permeation chromatography to detect changes in molecular weight of the residue. The results showed that degradation corresponded to a model of random scission of the molecules of both the crystalline shell and the non-crystalline core indiscriminately. Differential scanning calorimetry and wide-angle X-ray diffraction results demonstrated that the molecules recrystallize due to chain scission and annealing at the temperature at which degradation is performed (104.5?C). Transmission electron microscopy of enzyme-isolated, spray-dried granules revealed a retention of the surface shell throughout the reaction with conversion of the core to a porous lamellar texture.
Publication date
LanguageEnglish
AffiliationNRC Institute for Research in Construction; National Research Council Canada
Peer reviewedYes
NRC number40314
5351
NPARC number20375632
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Record identifiere88936ca-685d-4ecc-b1e4-f7791bdd18c9
Record created2012-07-23
Record modified2016-05-09
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