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Li B, Liao G, Liu Y, Cao K, Li Y, Xie Z, Yin H, Cui L. Investigation on the creep mechanism of PA6 films based on quasi point defect theory. Sci Rep 2024; 14:22169. [PMID: 39333291 PMCID: PMC11437254 DOI: 10.1038/s41598-024-73513-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2024] [Accepted: 09/18/2024] [Indexed: 09/29/2024] Open
Abstract
Polyamide 6 (PA6) films with significant α relaxation process was selected as the model system. The creep behavior and rheological mechanism during deformation in the amorphous regions of semi-crystalline polymers are systematically investigated by carrying out creep experiments. Based on the quasi point defect (QPD) theory, the complete physical process of PA6 film creep behavior from elasticity to viscoelasticity and viscoplasticity was analyzed and modeled from the perspective of structural heterogeneity. The results demonstrate that the creep deformation of PA6 film is a typical thermo-mechanical coupling and nonlinear mechanics process, and potential creep mechanisms corresponds to stress-induced local shear deformation enhancement and thermal activation-induced particle flow diffusion. The elastic-plastic transition involved in the creep deformation process of semi-crystalline polymer originates from the activation of quasi-point defective sites in the amorphous region, the expansion of sheared micro-domains and irreversible fusion. The generalized fractional Kelvin (GFK) model is proposed, and the physical meaning of parameters is explained by combining the quasi point defect theory and creep delay spectrum(L(τ)). Finally, the effectiveness of the GFK model and the QPD theory in studying the deformation behavior of PA6 films was validated by comparing experimental data with theoretical results, which theoretically reveals the structural evolution of PA6 film during creep process.
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Affiliation(s)
- Bowen Li
- Key Laboratory of Advanced Packaging Materials and Technology of Hunan Province, Hunan University of Technology, Zhuzhou, 412007, China
| | - Guangkai Liao
- Key Laboratory of Advanced Packaging Materials and Technology of Hunan Province, Hunan University of Technology, Zhuzhou, 412007, China.
| | - Yuejun Liu
- Key Laboratory of Advanced Packaging Materials and Technology of Hunan Province, Hunan University of Technology, Zhuzhou, 412007, China.
| | - Kaikai Cao
- Zhuzhou Times Engineering Plastics Industrial Co., Ltd, Zhuzhou, 412008, China
| | - Yuankang Li
- Key Laboratory of Advanced Packaging Materials and Technology of Hunan Province, Hunan University of Technology, Zhuzhou, 412007, China
| | - Zhenyan Xie
- Key Laboratory of Advanced Packaging Materials and Technology of Hunan Province, Hunan University of Technology, Zhuzhou, 412007, China
| | - Haomin Yin
- Key Laboratory of Advanced Packaging Materials and Technology of Hunan Province, Hunan University of Technology, Zhuzhou, 412007, China
| | - Lingna Cui
- Key Laboratory of Advanced Packaging Materials and Technology of Hunan Province, Hunan University of Technology, Zhuzhou, 412007, China
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2
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Dall Agnol L, Ornaghi HL, Monticeli F, Dias FTG, Bianchi O. Polyurethanes synthetized with polyols of distinct molar masses: Use of the artificial neural network for prediction of degree of polymerization. POLYM ENG SCI 2021. [DOI: 10.1002/pen.25702] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Lucas Dall Agnol
- Postgraduate Program in Materials Science and Engineering (PGMAT) University of Caxias do Sul (UCS) Caxias do Sul Rio Grande do Sul Brazil
| | - Heitor Luiz Ornaghi
- Federal University for Latin American Integration (UNILA) Foz do Iguaçu Parana Brazil
| | - Francisco Monticeli
- Department of Materials and Technology School of Engineering, São Paulo State University (Unesp) Guaratinguetá Brazil
| | - Fernanda Trindade Gonzalez Dias
- Postgraduate Program in Technology and Materials Engineering (PPG‐TEM) Federal Institute of Education, Science and Technology of Rio Grande do Sul (IFRS) Campus Feliz Rio Grande do Sul Brazil
| | - Otávio Bianchi
- Postgraduate Program in Materials Science and Engineering (PGMAT) University of Caxias do Sul (UCS) Caxias do Sul Rio Grande do Sul Brazil
- Department of Materials Engineering (DEMAT) Federal University of Rio Grande do Sul (UFRGS) Porto Alegre Rio Grande do Sul Brazil
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3
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Ahmed MF, Li Y, Yao Z, Cao K, Zeng C. TPU/PLA blend foams: Enhanced foamability, structural stability, and implications for shape memory foams. J Appl Polym Sci 2018. [DOI: 10.1002/app.47416] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Mohammad Faisal Ahmed
- Industrial and Manufacturing Engineering; FAMU-FSU College of Engineering; Tallahassee Florida 32310
| | - Yan Li
- Industrial and Manufacturing Engineering; FAMU-FSU College of Engineering; Tallahassee Florida 32310
- High-Performance Materials Institute; Florida State University; Tallahassee Florida 32310
| | - Zhen Yao
- Institute of Polymerization and Polymer Engineering, College of Chemical and Biological Engineering; Zhejiang University; Hangzhou 310027 People's Republic of China
| | - Kun Cao
- Institute of Polymerization and Polymer Engineering, College of Chemical and Biological Engineering; Zhejiang University; Hangzhou 310027 People's Republic of China
- State Key Laboratory of Chemical Engineering, College of Chemical and Biological Engineering; Zhejiang University; Hangzhou 310027 People's Republic of China
| | - Changchun Zeng
- Industrial and Manufacturing Engineering; FAMU-FSU College of Engineering; Tallahassee Florida 32310
- High-Performance Materials Institute; Florida State University; Tallahassee Florida 32310
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4
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Zhao Y, Mo H, Jiang X, Han B, Feng F, Wang D, Fu L, He L, Zhang J, Shen J. Thermal stability and thermal oxidation kinetics of PU/CA-MMT composites. J Appl Polym Sci 2018. [DOI: 10.1002/app.47002] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Y. Zhao
- Jiangsu Collaborative Innovation Center of Biomedical Functional Materials, Jiangsu Key Laboratory of 3D Printing Equipment and Manufacturing, National and Local Joint Engineering Research Center of Biomedical Functional Materials, Jiangsu Engineering Research Center for Biomedical Function Materials, College of Chemistry and Materials Science; Nanjing Normal University; Nanjing 210023 Jiangsu China
| | - H. Mo
- Jiangsu Collaborative Innovation Center of Biomedical Functional Materials, Jiangsu Key Laboratory of 3D Printing Equipment and Manufacturing, National and Local Joint Engineering Research Center of Biomedical Functional Materials, Jiangsu Engineering Research Center for Biomedical Function Materials, College of Chemistry and Materials Science; Nanjing Normal University; Nanjing 210023 Jiangsu China
| | - X. Jiang
- Jiangsu Collaborative Innovation Center of Biomedical Functional Materials, Jiangsu Key Laboratory of 3D Printing Equipment and Manufacturing, National and Local Joint Engineering Research Center of Biomedical Functional Materials, Jiangsu Engineering Research Center for Biomedical Function Materials, College of Chemistry and Materials Science; Nanjing Normal University; Nanjing 210023 Jiangsu China
| | - B. Han
- School of Material Engineering; Nanjing Institute of Technology; Nanjing 211167 Jiangsu China
| | - F. Feng
- Jiangsu Collaborative Innovation Center of Biomedical Functional Materials, Jiangsu Key Laboratory of 3D Printing Equipment and Manufacturing, National and Local Joint Engineering Research Center of Biomedical Functional Materials, Jiangsu Engineering Research Center for Biomedical Function Materials, College of Chemistry and Materials Science; Nanjing Normal University; Nanjing 210023 Jiangsu China
| | - D. Wang
- Jiangsu Collaborative Innovation Center of Biomedical Functional Materials, Jiangsu Key Laboratory of 3D Printing Equipment and Manufacturing, National and Local Joint Engineering Research Center of Biomedical Functional Materials, Jiangsu Engineering Research Center for Biomedical Function Materials, College of Chemistry and Materials Science; Nanjing Normal University; Nanjing 210023 Jiangsu China
| | - L. Fu
- Jiangsu Collaborative Innovation Center of Biomedical Functional Materials, Jiangsu Key Laboratory of 3D Printing Equipment and Manufacturing, National and Local Joint Engineering Research Center of Biomedical Functional Materials, Jiangsu Engineering Research Center for Biomedical Function Materials, College of Chemistry and Materials Science; Nanjing Normal University; Nanjing 210023 Jiangsu China
| | - L. He
- Jiangsu Collaborative Innovation Center of Biomedical Functional Materials, Jiangsu Key Laboratory of 3D Printing Equipment and Manufacturing, National and Local Joint Engineering Research Center of Biomedical Functional Materials, Jiangsu Engineering Research Center for Biomedical Function Materials, College of Chemistry and Materials Science; Nanjing Normal University; Nanjing 210023 Jiangsu China
| | - J. Zhang
- Jiangsu Collaborative Innovation Center of Biomedical Functional Materials, Jiangsu Key Laboratory of 3D Printing Equipment and Manufacturing, National and Local Joint Engineering Research Center of Biomedical Functional Materials, Jiangsu Engineering Research Center for Biomedical Function Materials, College of Chemistry and Materials Science; Nanjing Normal University; Nanjing 210023 Jiangsu China
| | - J. Shen
- Jiangsu Collaborative Innovation Center of Biomedical Functional Materials, Jiangsu Key Laboratory of 3D Printing Equipment and Manufacturing, National and Local Joint Engineering Research Center of Biomedical Functional Materials, Jiangsu Engineering Research Center for Biomedical Function Materials, College of Chemistry and Materials Science; Nanjing Normal University; Nanjing 210023 Jiangsu China
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Fang L, Yan W, Nöchel U, Kratz K, Lendlein A. Programming structural functions in phase-segregated polymers by implementing a defined thermomechanical history. POLYMER 2016. [DOI: 10.1016/j.polymer.2016.08.105] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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6
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Ionita D, Gaina C, Cristea M, Banabic D. Tailoring the hard domain cohesiveness in polyurethanes by interplay between the functionality and the content of chain extender. RSC Adv 2015. [DOI: 10.1039/c5ra15190b] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Thermo-mechanical behavior of polyurethanes with diol/triol chain extension is reflected in a particular behavior in the glass transition and rubbery region and is ruled by the functionality and content of the chain extender.
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Affiliation(s)
- Daniela Ionita
- “Petru Poni” Institute of Macromolecular Chemistry
- Iasi
- Romania
- Technical University of Cluj-Napoca
- Cluj-Napoca
| | | | - Mariana Cristea
- “Petru Poni” Institute of Macromolecular Chemistry
- Iasi
- Romania
| | - Dorel Banabic
- Technical University of Cluj-Napoca
- Cluj-Napoca
- Romania
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