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Fabrication of controllable and reversible bidirectional shape memory fabric composites based on multiblock copolyimide and their properties. POLYMER 2022. [DOI: 10.1016/j.polymer.2022.125608] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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Structural evolution and barrier properties in biaxially stretched polyethylene terephthalate/hydroxy-terminated polybutadiene films. JOURNAL OF POLYMER ENGINEERING 2022. [DOI: 10.1515/polyeng-2022-0145] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Abstract
This paper aims to investigate the crystallization and barrier properties of oxygen-scavenging polyethylene terephthalate films (OSP) at different stretching ratios and stretching rates. The results show that with the increase of the stretching ratio, more regular lamellar crystal was formed in the biaxially stretched OSP films, and the amorphous phase thickness between lamellae and the long period decreased. The presence of oxygen scavenger acted as heterogeneous nucleation, further promoting the crystallization of the OSP films. This was conducive to prolong the diffusion path of gas molecules through the film. Furthermore, the increase of the stretching ratio expanded the “active” oxygen barrier area of the oxygen scavengers. Thus, the barrier performance of the biaxially stretched OSP films was improved significantly. In addition, the variation of crystallinity and properties of OSP films with the stretching ratio was consistent with the variation with the stretching rate, but the stretching ratio had a greater impact. It was also found that the increase of the stretching ratio and the introduction of oxygen scavenger both increased the stretching strength of the OSP films, while the biaxially stretched OSP film maintained good optical properties.
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Mao HI, Yang ZY, Chen CW, Rwei SP. Bio-based poly(hexamethylene 2,5-furandicarboxylate- co-2,6-naphthalate) copolyesters: a study of thermal, mechanical, and gas-barrier properties. SOFT MATTER 2022; 18:7631-7641. [PMID: 36168773 DOI: 10.1039/d2sm00689h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
A series of poly(hexamethylene 2,5-furandicarboxylate-co-2,6-naphthalate) copolyesters were synthesized using various amounts of poly(hexylene 2,5-furandicarboxylate) (PHF) and poly(hexylene 2,6-naphthalate) (PHN) via melt polymerization. The effects of introducing 2,6-naphthalene dicarboxylic acid (NDCA) on the thermal, mechanical, and gas-barrier properties were investigated. When the NDCA content was less than 30 mol%, the temperatures of crystallization (Tc) and melting (Tm) decreased as the amount of NDCA was increased owing to disturbance of the polymer-chain regularity. When the NDCA content was above 50 mol%, the Tc and Tm of the materials increased as the NDCA content was increased, showing that the dominant crystallization behavior varied from 2,5-furandicarboxylic acid to NDCA. Hence, the glass transition temperature (Tg) increased as the NDCA content was increased, which was attributed to the incorporation of NDCA with a more rigid naphthalate structure compared with the furan ring. The gas-barrier properties of the samples were observed to improve with the introduction of NDCA; this tendency could be explained by the β-relaxation behavior and free volume values of the samples in the amorphous state. The activation energy (Ea) of β-relaxation increased with the NDCA content, indicating that higher amounts of energy were needed to trigger the onset of long-range molecular motions. Free-volume calculations of the polymer structure showed that the introduction of NDCA hindered the space for gas penetration. For these reasons, the gas-barrier properties were improved and evaluated.
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Affiliation(s)
- Hsu-I Mao
- Department of Molecular Science and Engineering, Institute of Organic and Polymeric Materials, Research and Development Center of Smart Textile Technology, National Taipei University of Technology, No. 1, Sec. 3, Chung-Hsiao East Road., Taipei, 10608, Taiwan.
| | - Zhi-Yu Yang
- Department of Molecular Science and Engineering, Institute of Organic and Polymeric Materials, Research and Development Center of Smart Textile Technology, National Taipei University of Technology, No. 1, Sec. 3, Chung-Hsiao East Road., Taipei, 10608, Taiwan.
| | - Chin-Wen Chen
- Department of Molecular Science and Engineering, Institute of Organic and Polymeric Materials, Research and Development Center of Smart Textile Technology, National Taipei University of Technology, No. 1, Sec. 3, Chung-Hsiao East Road., Taipei, 10608, Taiwan.
| | - Syang-Peng Rwei
- Department of Molecular Science and Engineering, Institute of Organic and Polymeric Materials, Research and Development Center of Smart Textile Technology, National Taipei University of Technology, No. 1, Sec. 3, Chung-Hsiao East Road., Taipei, 10608, Taiwan.
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Quan L, Liu Z, Zhang Q, Li Z, Chen Y. Synthesis of statistical poly(ethylene terephthalate‐co‐2,6‐naphthalate) (co)polymers and study on their properties: Thermal and barrier properties. J Appl Polym Sci 2022. [DOI: 10.1002/app.53099] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Lijun Quan
- School of Chemistry and Chemical Engineering, Shaanxi Key Laboratory of Macromolecular Science and Technology, Key Laboratory of Special Functional and Smart Polymer Materials of Ministry of Industry and Information Technology Northwestern Polytechnical University Xi'an China
| | - Zhenguo Liu
- Ningbo Institute of Northwestern Polytechnical University Ningbo China
- Institute of Flexible Electronics, Northwestern Polytechnical University Xi'an China
| | - Qiuyu Zhang
- School of Chemistry and Chemical Engineering, Shaanxi Key Laboratory of Macromolecular Science and Technology, Key Laboratory of Special Functional and Smart Polymer Materials of Ministry of Industry and Information Technology Northwestern Polytechnical University Xi'an China
| | - Zhongming Li
- College of Polymer Science and Engineering and State Key Laboratory of Polymer Materials Engineering Sichuan University Chengdu China
| | - Yanhui Chen
- School of Chemistry and Chemical Engineering, Shaanxi Key Laboratory of Macromolecular Science and Technology, Key Laboratory of Special Functional and Smart Polymer Materials of Ministry of Industry and Information Technology Northwestern Polytechnical University Xi'an China
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Walkowiak K, Irska I, Zubkiewicz A, Dryzek J, Paszkiewicz S. The Properties of Poly(ester amide)s Based on Dimethyl 2,5-Furanedicarboxylate as a Function of Methylene Sequence Length in Polymer Backbone. Polymers (Basel) 2022; 14:polym14112295. [PMID: 35683967 PMCID: PMC9182615 DOI: 10.3390/polym14112295] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2022] [Revised: 06/03/2022] [Accepted: 06/03/2022] [Indexed: 11/16/2022] Open
Abstract
A series of poly(ester amide)s based on dimethyl furan 2,5-dicarboxylate (DMFDC), 1,3-propanediol (PDO), 1,6-hexylene glycol (HDO), and 1,3-diaminopropane (DAP) were synthesized via two-step melt polycondensation. The phase transition temperatures and structure of the polymers were studied by differential scanning calorimetry (DSC). The positron annihilation lifetime spectroscopy (PALS) measurement was carried out to investigate the free volume. In addition, the mechanical properties of two series of poly(ester amide)s were analyzed. The increase in the number of methylene groups in the polymer backbone resulted in a decrease in the values of the transition temperatures. Depending on the number of methylene groups and the content of the poly(propylene furanamide) (PPAF), both semi-crystalline and amorphous copolymers were obtained. The free volume value increased with a greater number of methylene groups in the polymer backbone. Moreover, with a lower number of methylene groups, the value of the Young modulus and stress at break increased.
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Affiliation(s)
- Konrad Walkowiak
- Department of Materials Technologies, Faculty of Mechanical Engineering and Mechatronics, West Pomeranian University of Technology, PL 70310 Szczecin, Poland; (I.I.); (S.P.)
- Correspondence: ; Tel.: +48-91-449-45-89
| | - Izabela Irska
- Department of Materials Technologies, Faculty of Mechanical Engineering and Mechatronics, West Pomeranian University of Technology, PL 70310 Szczecin, Poland; (I.I.); (S.P.)
| | - Agata Zubkiewicz
- Department of Physics, Faculty of Mechanical Engineering and Mechatronics, West Pomeranian University of Technology, PL 70311 Szczecin, Poland;
| | - Jerzy Dryzek
- Institute of Nuclear Physics Polish Academy of Sciences, PL 31342 Krakow, Poland;
| | - Sandra Paszkiewicz
- Department of Materials Technologies, Faculty of Mechanical Engineering and Mechatronics, West Pomeranian University of Technology, PL 70310 Szczecin, Poland; (I.I.); (S.P.)
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Guo YT, Xiong W, Shi C, Du FS, Li ZC. Facile synthesis of eight-membered cyclic(ester-amide)s and their organocatalytic ring-opening polymerizations. Polym Chem 2022. [DOI: 10.1039/d2py00683a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Facile modular synthesis of eight-membered cyclic(ester-amide)s based on phthalic anhydride and β-amino alcohols and organocatalitic ROP of the monomers to afford degradable semi-aromatic poly(ester-amides)s with tunable thermal properties.
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Affiliation(s)
- Yu-Ting Guo
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Polymer Chemistry and Physics of Ministry of Education, Center for Soft Matter Science and Engineering, College of Chemistry & Molecular Engineering, Peking University, Beijing 100871, China
| | - Wei Xiong
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Polymer Chemistry and Physics of Ministry of Education, Center for Soft Matter Science and Engineering, College of Chemistry & Molecular Engineering, Peking University, Beijing 100871, China
| | - Changxia Shi
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Polymer Chemistry and Physics of Ministry of Education, Center for Soft Matter Science and Engineering, College of Chemistry & Molecular Engineering, Peking University, Beijing 100871, China
| | - Fu-Sheng Du
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Polymer Chemistry and Physics of Ministry of Education, Center for Soft Matter Science and Engineering, College of Chemistry & Molecular Engineering, Peking University, Beijing 100871, China
| | - Zi-Chen Li
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Polymer Chemistry and Physics of Ministry of Education, Center for Soft Matter Science and Engineering, College of Chemistry & Molecular Engineering, Peking University, Beijing 100871, China
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Jang YJ, Sangroniz L, Hillmyer MA. Ductile gas barrier poly(ester–amide)s derived from glycolide. Polym Chem 2022. [DOI: 10.1039/d2py00479h] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Sustainable poly(ester–amide)s derived from glycolide have been synthesized and their thermal, mechanical, and gas barrier properties have been studied by systematically changing the number of methylene groups.
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Affiliation(s)
- Yoon-Jung Jang
- Department of Chemistry, University of Minnesota, Minneapolis, MN 55455-0431, USA
| | - Leire Sangroniz
- Department of Chemistry, University of Minnesota, Minneapolis, MN 55455-0431, USA
| | - Marc A. Hillmyer
- Department of Chemistry, University of Minnesota, Minneapolis, MN 55455-0431, USA
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Gao H, Cao W, He J, Bai Y. Highly transparent biaxially oriented poly(ester amide) film with improved gas barrier properties and good mechanical strength. Eur Polym J 2021. [DOI: 10.1016/j.eurpolymj.2021.110620] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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Structure and Properties of Isotactic Polypropylene/Polybutene-1 In-reactor Alloys. CHINESE JOURNAL OF POLYMER SCIENCE 2020. [DOI: 10.1007/s10118-020-2468-9] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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