Comparison of Properties of Poly(Lactic Acid) Composites Prepared from Different Components of Corn Straw Fiber
In recent years, under the pressure of resource shortage and white pollution, the development and utilization of biodegradable wood-plastic composites (WPC) has become one of the hot spots for scholars’ research. Here, corn straw fiber (CSF) was chosen to reinforce a poly(lactic acid) (PLA) matrix w...
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-06-01
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| Series: | International Journal of Molecular Sciences |
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| Online Access: | https://www.mdpi.com/1422-0067/23/12/6746 |
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| author | Zhongyu Qi Baiwang Wang Ce Sun Minghui Yang Xiaojian Chen Dingyuan Zheng Wenrui Yao Yang Chen Ruixiang Cheng Yanhua Zhang |
| author_facet | Zhongyu Qi Baiwang Wang Ce Sun Minghui Yang Xiaojian Chen Dingyuan Zheng Wenrui Yao Yang Chen Ruixiang Cheng Yanhua Zhang |
| author_sort | Zhongyu Qi |
| collection | DOAJ |
| description | In recent years, under the pressure of resource shortage and white pollution, the development and utilization of biodegradable wood-plastic composites (WPC) has become one of the hot spots for scholars’ research. Here, corn straw fiber (CSF) was chosen to reinforce a poly(lactic acid) (PLA) matrix with a mass ratio of 3:7, and the CSF/PLA composites were obtained by melt mixing. The results showed that the mechanical properties of the corn straw fiber core (CSFC) and corn straw fiber skin (CSFS) loaded PLA composites were stronger than those of the CSFS/PLA composites when the particle size of CSF was low. The tensile strength and bending strength of CSFS/CSFC/PLA are 54.08 MPa and 87.24 MPa, respectively, and the elongation at break is 4.60%. After soaking for 8 hours, the water absorption of CSF/PLA composite reached saturation. When the particle size of CSF is above 80 mesh, the saturated water absorption of the material is kept below 7%, and CSF/PLA composite has good hydrophobicity, which is mainly related to the interfacial compatibility between PLA and CSF. By observing the microstructure of the cross section of the CSF/PLA composite, the research found that the smaller the particle size of CSF, the smoother the cross section of the composite and the more unified the dispersion of CSF in PLA. Therefore, exploring the composites formed by different components of CSF and PLA can not only expand the application range of PLA, but also enhance the application value of CSF in the field of composites. |
| first_indexed | 2024-03-09T23:32:58Z |
| format | Article |
| id | doaj.art-430461f19abd4fdfb923c914b09c8a9a |
| institution | Directory Open Access Journal |
| issn | 1661-6596 1422-0067 |
| language | English |
| last_indexed | 2024-03-09T23:32:58Z |
| publishDate | 2022-06-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | International Journal of Molecular Sciences |
| spelling | doaj.art-430461f19abd4fdfb923c914b09c8a9a2023-11-23T17:06:05ZengMDPI AGInternational Journal of Molecular Sciences1661-65961422-00672022-06-012312674610.3390/ijms23126746Comparison of Properties of Poly(Lactic Acid) Composites Prepared from Different Components of Corn Straw FiberZhongyu Qi0Baiwang Wang1Ce Sun2Minghui Yang3Xiaojian Chen4Dingyuan Zheng5Wenrui Yao6Yang Chen7Ruixiang Cheng8Yanhua Zhang9Engineering Research Center of Advanced Wooden Materials, Ministry of Education, Harbin 150040, ChinaEngineering Research Center of Advanced Wooden Materials, Ministry of Education, Harbin 150040, ChinaEngineering Research Center of Advanced Wooden Materials, Ministry of Education, Harbin 150040, ChinaEngineering Research Center of Advanced Wooden Materials, Ministry of Education, Harbin 150040, ChinaEngineering Research Center of Advanced Wooden Materials, Ministry of Education, Harbin 150040, ChinaEngineering Research Center of Advanced Wooden Materials, Ministry of Education, Harbin 150040, ChinaEngineering Research Center of Advanced Wooden Materials, Ministry of Education, Harbin 150040, ChinaEngineering Research Center of Advanced Wooden Materials, Ministry of Education, Harbin 150040, ChinaEngineering Research Center of Advanced Wooden Materials, Ministry of Education, Harbin 150040, ChinaEngineering Research Center of Advanced Wooden Materials, Ministry of Education, Harbin 150040, ChinaIn recent years, under the pressure of resource shortage and white pollution, the development and utilization of biodegradable wood-plastic composites (WPC) has become one of the hot spots for scholars’ research. Here, corn straw fiber (CSF) was chosen to reinforce a poly(lactic acid) (PLA) matrix with a mass ratio of 3:7, and the CSF/PLA composites were obtained by melt mixing. The results showed that the mechanical properties of the corn straw fiber core (CSFC) and corn straw fiber skin (CSFS) loaded PLA composites were stronger than those of the CSFS/PLA composites when the particle size of CSF was low. The tensile strength and bending strength of CSFS/CSFC/PLA are 54.08 MPa and 87.24 MPa, respectively, and the elongation at break is 4.60%. After soaking for 8 hours, the water absorption of CSF/PLA composite reached saturation. When the particle size of CSF is above 80 mesh, the saturated water absorption of the material is kept below 7%, and CSF/PLA composite has good hydrophobicity, which is mainly related to the interfacial compatibility between PLA and CSF. By observing the microstructure of the cross section of the CSF/PLA composite, the research found that the smaller the particle size of CSF, the smoother the cross section of the composite and the more unified the dispersion of CSF in PLA. Therefore, exploring the composites formed by different components of CSF and PLA can not only expand the application range of PLA, but also enhance the application value of CSF in the field of composites.https://www.mdpi.com/1422-0067/23/12/6746corn straw fiber skincorn straw fiber corecomposite materialpoly(lactic acid) |
| spellingShingle | Zhongyu Qi Baiwang Wang Ce Sun Minghui Yang Xiaojian Chen Dingyuan Zheng Wenrui Yao Yang Chen Ruixiang Cheng Yanhua Zhang Comparison of Properties of Poly(Lactic Acid) Composites Prepared from Different Components of Corn Straw Fiber International Journal of Molecular Sciences corn straw fiber skin corn straw fiber core composite material poly(lactic acid) |
| title | Comparison of Properties of Poly(Lactic Acid) Composites Prepared from Different Components of Corn Straw Fiber |
| title_full | Comparison of Properties of Poly(Lactic Acid) Composites Prepared from Different Components of Corn Straw Fiber |
| title_fullStr | Comparison of Properties of Poly(Lactic Acid) Composites Prepared from Different Components of Corn Straw Fiber |
| title_full_unstemmed | Comparison of Properties of Poly(Lactic Acid) Composites Prepared from Different Components of Corn Straw Fiber |
| title_short | Comparison of Properties of Poly(Lactic Acid) Composites Prepared from Different Components of Corn Straw Fiber |
| title_sort | comparison of properties of poly lactic acid composites prepared from different components of corn straw fiber |
| topic | corn straw fiber skin corn straw fiber core composite material poly(lactic acid) |
| url | https://www.mdpi.com/1422-0067/23/12/6746 |
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