Effects of coupling agent on antioxidant properties and structure of PP/cotton stalk lignin composites
| Autor: | Gong-bo Hou, Dilhumar Musajian, Mingyu He, Mamatjan Yimit, Gvlmira Hasan |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
Antioxidant
Materials science General Chemical Engineering medicine.medical_treatment cotton stalk lignin 02 engineering and technology 010402 general chemistry 01 natural sciences chemistry.chemical_compound coupling agent medicine Lignin QD1-999 Industrial chemistry General Chemistry composite material 021001 nanoscience & nanotechnology 0104 chemical sciences Coupling (electronics) Chemistry chemistry Chemical engineering Stalk 0210 nano-technology polypropylene Biotechnology |
| Zdroj: | Polish Journal of Chemical Technology, Vol 22, Iss 2, Pp 78-85 (2020) |
| ISSN: | 1899-4741 |
| DOI: | 10.2478/pjct-2020-0020 |
| Popis: | In this paper, the effects of coupling agent and lignin extracted from waste cotton stalks in Xinjiang on thermal-oxygen aging properties of polypropylene (PP) composites were studied. The melt index test and indoor thermal oxygen aging test was carried out on the samples treated with coupling agent. The mechanical properties, surface micromorphology, rheological properties and element composition of the materials before and after 30 days of aging were studied. The results showed that the titanate coupling agent was the best for improving the melt index and mechanical properties of PP/cotton stalk lignin composites. After the 30-day thermal oxygen aging test, the samples with 2% lignin had the best impact strength and retention rate of fracture elongation, reaching 68.9% and 77.3% respectively. The sample with 3% lignin content had the smoothen surface, no crack appeared. After aging, the increase of C=O was the least, and the crystal peak area decreased less. |
| Databáze: | OpenAIRE |
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