Poly(lactic acid) toughen by aromatic sulfonamide toward balanced rheology processing and mechanical properties
The inherent brittleness of poly(lactic acid) (PLA) usually limits its application in the high ductile requirements sector. To address the above issue, n-ethyl-p-toluenesulfonamide (N-PTSA) as the toughening agent, was utilized to optimize the rheological and mechanical performance of the PLA matrix...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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IOP Publishing
2022-01-01
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| Series: | Materials Research Express |
| Subjects: | |
| Online Access: | https://doi.org/10.1088/2053-1591/ac7b73 |
| _version_ | 1797746351704899584 |
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| author | Wenpeng Chu Song Yan Ziqing Cai Shiwen Yang Xinghui Hu Xianze Yin |
| author_facet | Wenpeng Chu Song Yan Ziqing Cai Shiwen Yang Xinghui Hu Xianze Yin |
| author_sort | Wenpeng Chu |
| collection | DOAJ |
| description | The inherent brittleness of poly(lactic acid) (PLA) usually limits its application in the high ductile requirements sector. To address the above issue, n-ethyl-p-toluenesulfonamide (N-PTSA) as the toughening agent, was utilized to optimize the rheological and mechanical performance of the PLA matrix. The microstructure, thermal stability, rheological behavior, and mechanical properties of PLA/N-PTSA were systematically investigated. A rheological test showed that N-PTSA can reduce the melt processing viscosity of PLA matrix and the decreasing of processing viscosity strongly depended on the N-PTSA content rather than shear rate. Mechanical properties results confirmed that the 14.7% N-PTSA can improve the toughness of PLA/N-PTSA without deteriorating the tensile strength and Yong’s modulus. This reason was ascribed to the reduction of hydrogen bonds of PLA matrix caused by N-PTSA to accelerate the movement of PLA molecular chain meanwhile forming new hydrogen bond between PLA and N-PTSA. By adding N-PTSA, the thermal stability of PLA was decreased. With the synergistic effect of plasticizing and toughening N-PTSA, the rheology and mechanical properties of PLA had been effectively improved. |
| first_indexed | 2024-03-12T15:35:37Z |
| format | Article |
| id | doaj.art-a9ffb78f8a08450f9a5b57ab93c4c9e8 |
| institution | Directory Open Access Journal |
| issn | 2053-1591 |
| language | English |
| last_indexed | 2024-03-12T15:35:37Z |
| publishDate | 2022-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | Materials Research Express |
| spelling | doaj.art-a9ffb78f8a08450f9a5b57ab93c4c9e82023-08-09T16:15:17ZengIOP PublishingMaterials Research Express2053-15912022-01-019606530710.1088/2053-1591/ac7b73Poly(lactic acid) toughen by aromatic sulfonamide toward balanced rheology processing and mechanical propertiesWenpeng Chu0Song Yan1Ziqing Cai2https://orcid.org/0000-0002-7865-3402Shiwen Yang3Xinghui Hu4Xianze Yin5https://orcid.org/0000-0002-3341-3608College of Materials Science and Engineering, State Key Laboratory of New Textile Materials & Advanced Processing Technology, Wuhan Textile University , Wuhan 430200, People’s Republic of ChinaCollege of Materials Science and Engineering, State Key Laboratory of New Textile Materials & Advanced Processing Technology, Wuhan Textile University , Wuhan 430200, People’s Republic of ChinaCollege of Materials Science and Engineering, Wuhan Institute of Technology , Wuhan 430205, People’s Republic of ChinaCollege of Materials Science and Engineering, State Key Laboratory of New Textile Materials & Advanced Processing Technology, Wuhan Textile University , Wuhan 430200, People’s Republic of ChinaAccounting College, Wuhan Textile University , Wuhan 430073, People’s Republic of ChinaCollege of Materials Science and Engineering, State Key Laboratory of New Textile Materials & Advanced Processing Technology, Wuhan Textile University , Wuhan 430200, People’s Republic of China; State Key Laboratory of Bio-Fibers and Eco-Textiles, Qingdao University , Qingdao, 266071, People’s Republic of ChinaThe inherent brittleness of poly(lactic acid) (PLA) usually limits its application in the high ductile requirements sector. To address the above issue, n-ethyl-p-toluenesulfonamide (N-PTSA) as the toughening agent, was utilized to optimize the rheological and mechanical performance of the PLA matrix. The microstructure, thermal stability, rheological behavior, and mechanical properties of PLA/N-PTSA were systematically investigated. A rheological test showed that N-PTSA can reduce the melt processing viscosity of PLA matrix and the decreasing of processing viscosity strongly depended on the N-PTSA content rather than shear rate. Mechanical properties results confirmed that the 14.7% N-PTSA can improve the toughness of PLA/N-PTSA without deteriorating the tensile strength and Yong’s modulus. This reason was ascribed to the reduction of hydrogen bonds of PLA matrix caused by N-PTSA to accelerate the movement of PLA molecular chain meanwhile forming new hydrogen bond between PLA and N-PTSA. By adding N-PTSA, the thermal stability of PLA was decreased. With the synergistic effect of plasticizing and toughening N-PTSA, the rheology and mechanical properties of PLA had been effectively improved.https://doi.org/10.1088/2053-1591/ac7b73poly(lactic acid)N-Ethyl-p-toluenesulfonamidemelting blendingheat treatmentrheology |
| spellingShingle | Wenpeng Chu Song Yan Ziqing Cai Shiwen Yang Xinghui Hu Xianze Yin Poly(lactic acid) toughen by aromatic sulfonamide toward balanced rheology processing and mechanical properties Materials Research Express poly(lactic acid) N-Ethyl-p-toluenesulfonamide melting blending heat treatment rheology |
| title | Poly(lactic acid) toughen by aromatic sulfonamide toward balanced rheology processing and mechanical properties |
| title_full | Poly(lactic acid) toughen by aromatic sulfonamide toward balanced rheology processing and mechanical properties |
| title_fullStr | Poly(lactic acid) toughen by aromatic sulfonamide toward balanced rheology processing and mechanical properties |
| title_full_unstemmed | Poly(lactic acid) toughen by aromatic sulfonamide toward balanced rheology processing and mechanical properties |
| title_short | Poly(lactic acid) toughen by aromatic sulfonamide toward balanced rheology processing and mechanical properties |
| title_sort | poly lactic acid toughen by aromatic sulfonamide toward balanced rheology processing and mechanical properties |
| topic | poly(lactic acid) N-Ethyl-p-toluenesulfonamide melting blending heat treatment rheology |
| url | https://doi.org/10.1088/2053-1591/ac7b73 |
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