Influence of thermoplastic zein in PCL/TZ and HAp bio composite via solid state supercritical CO₂ foaming / Istikamah Subuki, Suffiyana Akhbar and Farrah Khalidah Nor Wahid

Subuki, Istikamah and Akhbar, Suffiyana and Nor Wahid, Farrah Khalidah (2020) Influence of thermoplastic zein in PCL/TZ and HAp bio composite via solid state supercritical CO₂ foaming / Istikamah Subuki, Suffiyana Akhbar and Farrah Khalidah Nor Wahid. Scientific Research Journal, 17 (2). pp. 178-190. ISSN 2289-649X

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Abstract

containing blended poly(ɛ-caprolactone) (PCL), hydroxyapatite (HA), and thermoplastic zein (TZ). Thermoplastic zein was developed by mixing zein with glycerol (GLY) and polyethylene glycol (PEG). The thermal properties of mixed TZ and bio composite were characterised to investigate the characterisation of PCL/TZ/HA composites. The bio composited was then molded, producing porous structure via solid state supercritical carbon dioxide (scCO2) foaming process. The specimen was saturated with CO2 for six hours at 50˚C and saturation pressure of 20MPa at a fast depressurisation rate. The morphology of the porous specimen produced was characterised using scanning electron microscopy (SEM). The results indicated that after polymer saturation with CO2, high depressurisation causes the formation of nucleated gas cells that give rise to pores within the foamed specimens. The blended bio composite with the composition of PCL60/TZ20/HAp20 exhibits a well interconnected porous structure compared to other bio composite prepared. The foaming effect produce foams with heterogeneous morphologies on bio composite material at relatively low temperature.

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Item Type: Article
Creators:
Creators
Email
Subuki, Istikamah
istikamah@uitm.edu.my
Akhbar, Suffiyana
UNSPECIFIED
Nor Wahid, Farrah Khalidah
UNSPECIFIED
Subjects: T Technology > TA Engineering. Civil engineering > Structural engineering > Structural analysis. Theory of structures > Limit analysis. Plastic analysis. Yield stress analysis
T Technology > TP Chemical technology > Polymers and polymer manufacture > Plastics
Divisions: Universiti Teknologi MARA, Shah Alam > Research Management Centre (RMC)
Journal or Publication Title: Scientific Research Journal
UiTM Journal Collections: UiTM Journal > Scientific Research Journal (SRJ)
ISSN: 2289-649X
Volume: 17
Number: 2
Page Range: pp. 178-190
Official URL: https://srj.uitm.edu.my/
Item ID: 34632
Uncontrolled Keywords: thermoplastic zein, hydroxyapatite, porosity
URI: https://ir.uitm.edu.my/id/eprint/34632

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34632

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