Optimization study on properties of poly (lactic acid) (PLA) composites filled with Scomberomorus guttatus-derived hydroxyapatite and montmorillonite (MMT) under electron beam irradiation

This research was carried out to investigate the interactive effects of MMT loading level and electron beam irradiation on the properties of PLA composites added with Mackerel-derived hydroxyapatite (MHAp). The introduction of MMT particles has increased the mechanical strength of PLA/MHAp composite...

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Bibliographic Details
Published in:Polymer bulletin (Berlin, Germany) Germany), 2022-10, Vol.79 (10), p.8823-8864
Main Authors: Ng, Hon Meng, Bee, Soo-Tueen, Sin, Lee Tin, Ratnam, C. T.
Format: Article
Language:English
Subjects:
Biocompatibility
Biodegradation
Biological activity
Bones
By products
Characterization and Evaluation of Materials
Chemistry
Chemistry and Materials Science
Complex Fluids and Microfluidics
Composite materials
Crosslinking
Electron beams
Electron irradiation
Heat resistance
Hydroxyapatite
Interlayers
Mackerel
Mechanical properties
Montmorillonite
Organic Chemistry
Original Paper
Physical Chemistry
Polylactic acid
Polymer Sciences
Polymers
Radiation
Radiation dosage
Soft and Granular Matter
Tissue engineering
Transplants & implants
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Summary:This research was carried out to investigate the interactive effects of MMT loading level and electron beam irradiation on the properties of PLA composites added with Mackerel-derived hydroxyapatite (MHAp). The introduction of MMT particles has increased the mechanical strength of PLA/MHAp composite due to effective intercalation of PLA matrix into MMT interlayer space as evident in increment of d -spacing. However, the mechanical properties of PLA composite were deteriorated when MMT amount increased up to 4 phr. Besides, the application of irradiation dosage up to 20 kGy has enhanced the mechanical properties and gel content of all PLA composites due to the occurrence of cross-linking networks induced by irradiation. The increase in MMT amounts has restricted the formation of cross-linking as evident in XRD analysis. For non-MMT added samples, further increasing irradiation dose up to 30 kGy had decreased the gel content by inducing predominant chains scissioning reaction.
ISSN:0170-0839
1436-2449
DOI:10.1007/s00289-021-03892-7