Enhanced Water Resistance of Recycled Newspaper/High Density Polyethylene Composite Laminates via Hydrophobic Modification of Newspaper Laminas
A high strength recycled newspaper (NP)/high density polyethylene (HDPE) laminated composite was developed using NP laminas as reinforcement and HDPE film as matrix. Herein, NP fiber was modified with stearic acid (SA) to enhance the water resistance of the NP laminas and NP/HDPE composite. The effe...
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| Format: | Article |
| Language: | English |
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MDPI AG
2021-01-01
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| Series: | Polymers |
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| Online Access: | https://www.mdpi.com/2073-4360/13/3/421 |
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| author | Binwei Zheng Weiwei Zhang Litao Guan Jin Gu Dengyun Tu Chuanshuang Hu |
| author_facet | Binwei Zheng Weiwei Zhang Litao Guan Jin Gu Dengyun Tu Chuanshuang Hu |
| author_sort | Binwei Zheng |
| collection | DOAJ |
| description | A high strength recycled newspaper (NP)/high density polyethylene (HDPE) laminated composite was developed using NP laminas as reinforcement and HDPE film as matrix. Herein, NP fiber was modified with stearic acid (SA) to enhance the water resistance of the NP laminas and NP/HDPE composite. The effects of heat treatment and SA concentration on the water resistance and tensile property of NP and composite samples were investigated. The chemical structure of the NP was characterized with X-ray diffractometer, X-ray photoelectron spectroscopy and attenuated total reflectance Fourier transform infrared spectra techniques. The surface and microstructure of the NP sheets were observed by scanning electron microscopy. An expected high-water resistance of NP sheets was achieved due to a chemical bonding that low surface energy SA were grafted onto the modified NP fibers. Results showed that the hydrophobicity of NP increased with increasing the stearic acid concentration. The water resistance of the composite laminates was depended on the hydrophobicity of the NP sheets. The lowest value of 2 h water absorption rate (3.3% ± 0.3%) and thickness swelling rate (2.2% ± 0.4%) of composite were obtained when the SA concentration was 0.15 M. In addition, the introduction of SA can not only enhance the water resistance of the composite laminates, but also reduce the loss of tensile strength in wet conditions, which shows potential in outdoor applications. |
| first_indexed | 2024-03-09T03:21:11Z |
| format | Article |
| id | doaj.art-20d55754fe2d49cb9a3b73778514b04c |
| institution | Directory Open Access Journal |
| issn | 2073-4360 |
| language | English |
| last_indexed | 2024-03-09T03:21:11Z |
| publishDate | 2021-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Polymers |
| spelling | doaj.art-20d55754fe2d49cb9a3b73778514b04c2023-12-03T15:08:54ZengMDPI AGPolymers2073-43602021-01-0113342110.3390/polym13030421Enhanced Water Resistance of Recycled Newspaper/High Density Polyethylene Composite Laminates via Hydrophobic Modification of Newspaper LaminasBinwei Zheng0Weiwei Zhang1Litao Guan2Jin Gu3Dengyun Tu4Chuanshuang Hu5College of Materials and Energy, South China Agricultural University, Guangzhou 510642, ChinaCollege of Materials and Energy, South China Agricultural University, Guangzhou 510642, ChinaCollege of Materials and Energy, South China Agricultural University, Guangzhou 510642, ChinaCollege of Materials and Energy, South China Agricultural University, Guangzhou 510642, ChinaCollege of Materials and Energy, South China Agricultural University, Guangzhou 510642, ChinaCollege of Materials and Energy, South China Agricultural University, Guangzhou 510642, ChinaA high strength recycled newspaper (NP)/high density polyethylene (HDPE) laminated composite was developed using NP laminas as reinforcement and HDPE film as matrix. Herein, NP fiber was modified with stearic acid (SA) to enhance the water resistance of the NP laminas and NP/HDPE composite. The effects of heat treatment and SA concentration on the water resistance and tensile property of NP and composite samples were investigated. The chemical structure of the NP was characterized with X-ray diffractometer, X-ray photoelectron spectroscopy and attenuated total reflectance Fourier transform infrared spectra techniques. The surface and microstructure of the NP sheets were observed by scanning electron microscopy. An expected high-water resistance of NP sheets was achieved due to a chemical bonding that low surface energy SA were grafted onto the modified NP fibers. Results showed that the hydrophobicity of NP increased with increasing the stearic acid concentration. The water resistance of the composite laminates was depended on the hydrophobicity of the NP sheets. The lowest value of 2 h water absorption rate (3.3% ± 0.3%) and thickness swelling rate (2.2% ± 0.4%) of composite were obtained when the SA concentration was 0.15 M. In addition, the introduction of SA can not only enhance the water resistance of the composite laminates, but also reduce the loss of tensile strength in wet conditions, which shows potential in outdoor applications.https://www.mdpi.com/2073-4360/13/3/421recycled newspapercomposite laminateswater resistancehigh strength |
| spellingShingle | Binwei Zheng Weiwei Zhang Litao Guan Jin Gu Dengyun Tu Chuanshuang Hu Enhanced Water Resistance of Recycled Newspaper/High Density Polyethylene Composite Laminates via Hydrophobic Modification of Newspaper Laminas Polymers recycled newspaper composite laminates water resistance high strength |
| title | Enhanced Water Resistance of Recycled Newspaper/High Density Polyethylene Composite Laminates via Hydrophobic Modification of Newspaper Laminas |
| title_full | Enhanced Water Resistance of Recycled Newspaper/High Density Polyethylene Composite Laminates via Hydrophobic Modification of Newspaper Laminas |
| title_fullStr | Enhanced Water Resistance of Recycled Newspaper/High Density Polyethylene Composite Laminates via Hydrophobic Modification of Newspaper Laminas |
| title_full_unstemmed | Enhanced Water Resistance of Recycled Newspaper/High Density Polyethylene Composite Laminates via Hydrophobic Modification of Newspaper Laminas |
| title_short | Enhanced Water Resistance of Recycled Newspaper/High Density Polyethylene Composite Laminates via Hydrophobic Modification of Newspaper Laminas |
| title_sort | enhanced water resistance of recycled newspaper high density polyethylene composite laminates via hydrophobic modification of newspaper laminas |
| topic | recycled newspaper composite laminates water resistance high strength |
| url | https://www.mdpi.com/2073-4360/13/3/421 |
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