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

International Conference on Innovative Research - ICIR Euroinvent 2016

Tan, W.L.^1 ; Yaakob, N.N.^1 ; Abidin, A. Zainal^1 ; Bakar, M. Abu^1 ; Bakar, N.H.H. Abu^1

Nanoscience Research Laboratory, School of Chemical Sciences, Universiti Sains Malaysia, Penang

11800, Malaysia^1

关键词: Crystallinities;    FTIR and NMR spectroscopy;    Metal chlorides;    Nucleation sites;    One-phase systems;    Physical interactions;    Polyhydroxybutyrate;    Porous structures;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/133/1/012012/pdf
DOI  :  10.1088/1757-899X/133/1/012012

来源: IOP

【 摘 要 】

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 MCl2content. There existed weak physical interactions between the PHB chains and MCl2as revealed by FTIR and NMR spectroscopies. The residue of MCl2in 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 MCl2acts as the nucleation sites to promote the growth of spherullites.