Sargassum siliquosum J. Agardh extract as potential material for synthesis of bioplastic film

• Published in: Journal of applied phycology 2018-12, Vol.30 (6), p.3285-3297
• Main Authors: Lim, Jia-Yee, Hii, Siew-Ling, Chee, Swee-Yong, Wong, Ching-Lee
• Format: Article
• Language: English
• Subjects: 8th Asian Pacific Phycological Forum; Algae; Alginates; Alginic acid; Biomedical and Life Sciences; Bioplastics; Calcium; Calcium chloride; Design of experiments; Ecology; Elongation; Factorial design; Freshwater & Marine Ecology; Life Sciences; Molecular weight; Permeability; Physical properties; Plant Physiology; Plant Sciences; Polymer blends; Powder; Raw materials; Sargassum; Seaweed meal; Sodium; Sorbitol; Spectrum analysis; Starch; Statistical analysis; Statistical methods; Synthesis; Tensile strength; Viscosity; Water vapor; Water vapour
• ISSN: 0921-8971; 1573-5176
• DOI: 10.1007/s10811-018-1603-2

In this study, alginate extracted from the brown alga Sargassum siliquosum J. Agardh was used as raw material for the synthesis of bioplastic film. Two-level full factorial design (FFD) and augmented central composite design (CCD) were employed in analysing the effects of following parameter toward the physical properties of the film produced: alginate loading, addition of sago starch and sorbitol as well as the concentration of calcium chloride (CaCl 2 ) used during treatment process. Statistical analysis of results indicated that bioplastic film could be produced from S . siliquosum by using a mixture containing 2 g of extracted alginate powder and 15% w / w of sorbitol followed by the treatment with 75% w / w of CaCl 2 . Model validation proved that the percentage error was below 3.21% in general, indicating the proficiency of the models in predicting an optimised film with the following properties: tensile strength of 33.90 MPa, elongation at break of 3.58%, water vapour permeability of 2.63 × 10 −10  g Pa −1  s −1  m −1 and water solubility of 33.73%.