Metal Chloride Induced Formation of Porous Polyhydroxybutyrate (PHB) Films: Morphology, Thermal Properties and Crystallinity

Polyhydroxybutyrate (PHB) films with highly porous structures were synthesized using a one phase system comprising of metal chloride methanol PHB chloroform (MCl2 CH3OH PHB CHCl3). SEM analyses confirmed that the MCl2 (where M = Cu2+ or Ni2+) induced porous structures with pore sizes ranging from 0....

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Bibliographic Details
Published in:IOP conference series. Materials Science and Engineering 2016-06, Vol.133 (1), p.12012
Main Authors: Tan, W.L., Yaakob, N.N., Abidin, A. Zainal, Bakar, M. Abu, Bakar, N.H.H. Abu
Format: Article
Language:English
Subjects:
Chloroform
Crystal structure
Crystallinity
Metal chlorides
Morphology
NMR
Nuclear magnetic resonance
Nucleation
Polyhydroxybutyrate
Pore size
Thermal stability
Thermodynamic properties
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Summary:Polyhydroxybutyrate (PHB) films with highly porous structures were synthesized using a one phase system comprising of metal chloride methanol PHB chloroform (MCl2 CH3OH PHB CHCl3). SEM analyses confirmed that the MCl2 (where M = Cu2+ or Ni2+) induced porous structures with pore sizes ranging from 0.3 - 2.0 μm. The average pore size increased with the increasing MCl2 content. There existed weak physical interactions between the PHB chains and MCl2 as revealed by FTIR and NMR spectroscopies. The residue of MCl2 in the porous PHB film does not exert significant influence on the thermal stability of PHB. Nevertheless, the crystallinity of the prepared film is enhanced, as MCl2 acts as the nucleation sites to promote the growth of spherullites.
ISSN:1757-8981
1757-899X
DOI:10.1088/1757-899X/133/1/012012