A Method of Large-Scale Resource Utilization of Algae—Eutrophic Waste from Lake Chao, China: Preparation and Performance Optimization of Composite Packaging Materials
| Autor: | Bingbing Zhao, Fayu Zhang, Fang Yan, Jiaquan Wang, Kang Wu |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
0106 biological sciences
Materials science Geography Planning and Development TJ807-830 02 engineering and technology Management Monitoring Policy and Law Raw material TD194-195 01 natural sciences Renewable energy sources response surface methodology chemistry.chemical_compound Flexural strength 010608 biotechnology Ultimate tensile strength GE1-350 Lubricant Composite material Environmental effects of industries and plants Renewable Energy Sustainability and the Environment Flexural modulus packing material Polyethylene 021001 nanoscience & nanotechnology Environmental sciences Low-density polyethylene White oil chemistry fresh algae 0210 nano-technology degradation performance |
| Zdroj: | Sustainability, Vol 11, Iss 22, p 6462 (2019) Sustainability Volume 11 Issue 22 |
| ISSN: | 2071-1050 |
| Popis: | In order to realize the resource utilization of bloom algae from Lake Chao, this study presents the use of fresh algae to improve the mechanical and biological properties of low-density polyethylene (LDPE). In this study, the algae and LDPE were used as raw materials, maleic anhydride grafted polyethylene (PE-g-MAH), polyethylene wax (PE-wax) and white oil, and glycerin were used as the compatibilizer, lubricant, and plasticizer, respectively. The single factor experiments were conducted with these three individual factors, and the response surface methodology technique was used to optimize the process conditions. In the single factor experiments, the mechanical properties of the composites increased with additions of PE-g-MAH, PE-wax/white oil, and glycerin. Both flexural strength and flexural modulus were maximized to optimize the preparation conditions. The optimum preparation conditions were found as follows: algae powder of 15.00 wt%, LDPE of 85.00 wt%, PE-g-MAH of 4.00 wt%, lubricant of 2.67 wt%, and glycerin of 3.00 wt%. This resulted in 11.60 MPa of tensile strength, 9.95 MPa of flexural strength, and 241.00 MPa of flexural modulus. The mechanical properties of composites were greatly improved compared with the absence of additives. In addition, compared with LDPE resin, the degradability of the composite was improved, and the weight loss rate was 7.73% after 6 months. The results recommended that the composites of the algae from Lake Chao and LDPE resin could be a useful material in the packaging field. Generally, the prepared composite particles can be used to produce foam products, packaging bags, or hard packing boxes with special shapes. It is more environmentally friendly, and more able to meet the challenges of sustainable development. |
| Databáze: | OpenAIRE |
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