<abstract xmlns="http://www.w3.org/1999/xhtml"><p>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.</p></abstract>

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.

Effects of coupling agent on antioxidant properties and structure of PP/cotton stalk lignin composites

Key laboratory of Oil and Gas Fine Chemicals

Polish Journal of Chemical Technology

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

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)...

Effects of coupling agent on antioxidant properties and structure of PP/cotton stalk lignin composites

Published Online: May 13, 2020

Page range: 78 - 85

DOI: https://doi.org/10.2478/pjct-2020-0020

Keywords
polypropylene, coupling agent, cotton stalk lignin, composite material

© 2020 Mingyu He et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Effects of coupling agent on antioxidant properties and structure of PP/cotton stalk lignin composites

Published Online: May 13, 2020

Page range: 78 - 85

DOI: https://doi.org/10.2478/pjct-2020-0020

Keywordspolypropylene, coupling agent, cotton stalk lignin, composite material

© 2020 Mingyu He et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Keywords
polypropylene, coupling agent, cotton stalk lignin, composite material