Long-Chain Branched Bio-Based Poly(butylene dodecanedioate) Copolyester Using Pentaerythritol as Branching Agent: Synthesis, Thermo-Mechanical, and Rheological Properties
The introduction of long-chain branched structures into biodegradable polyesters can effectively improve the melt strength and blow-molding properties of polyesters. In this study, pentaerythritol (PER) was used as a branching agent to synthesize branched poly(butylene dodecanedioate) (PBD), and the...
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MDPI AG
2023-07-01
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| Series: | Polymers |
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| Online Access: | https://www.mdpi.com/2073-4360/15/15/3168 |
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| author | Ruixue Niu Zhening Zheng Xuedong Lv Benqiao He Sheng Chen Jiaying Zhang Yanhong Ji Yi Liu Liuchun Zheng |
| author_facet | Ruixue Niu Zhening Zheng Xuedong Lv Benqiao He Sheng Chen Jiaying Zhang Yanhong Ji Yi Liu Liuchun Zheng |
| author_sort | Ruixue Niu |
| collection | DOAJ |
| description | The introduction of long-chain branched structures into biodegradable polyesters can effectively improve the melt strength and blow-molding properties of polyesters. In this study, pentaerythritol (PER) was used as a branching agent to synthesize branched poly(butylene dodecanedioate) (PBD), and the resulting polymers were characterized by Nuclear Magnetic Resonance Proton Spectra (<sup>1</sup>H NMR) and Fourier Transform Infrared spectroscopy (FT-IR). It was found that the introduction of a small amount of PER (0.25–0.5 mol%) can generate branching and even crosslinking structures. Both impact strength and tensile modulus can be greatly improved by the introduction of a branching agent. With the introduction of 1 mol% PER content in PBD, the notched impact strength of PBD has been increased by 85%, and the tensile modulus has been increased by 206%. Wide-angle X-ray diffraction and differential scanning calorimetry results showed that PER-branched PBDs exhibited improved crystallization ability compared with linear PBDs. Dynamic viscoelastics revealed that shear-thickening behaviors can be found for all branched PBD under low shear rates. |
| first_indexed | 2024-03-11T00:18:06Z |
| format | Article |
| id | doaj.art-154c9b774a0f43769a2ef28a9528ff34 |
| institution | Directory Open Access Journal |
| issn | 2073-4360 |
| language | English |
| last_indexed | 2024-03-11T00:18:06Z |
| publishDate | 2023-07-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Polymers |
| spelling | doaj.art-154c9b774a0f43769a2ef28a9528ff342023-11-18T23:27:29ZengMDPI AGPolymers2073-43602023-07-011515316810.3390/polym15153168Long-Chain Branched Bio-Based Poly(butylene dodecanedioate) Copolyester Using Pentaerythritol as Branching Agent: Synthesis, Thermo-Mechanical, and Rheological PropertiesRuixue Niu0Zhening Zheng1Xuedong Lv2Benqiao He3Sheng Chen4Jiaying Zhang5Yanhong Ji6Yi Liu7Liuchun Zheng8School of Textile Science and Engineering, Tiangong University, Tianjin 300387, ChinaDepartment of Applied Biology and Chemical Technology, Faculty of Science Hong Kong Polytechnic University, Hong Kong 100872, ChinaSchool of Textile Science and Engineering, Tiangong University, Tianjin 300387, ChinaSchool of Textile Science and Engineering, Tiangong University, Tianjin 300387, ChinaTechnology Innovation Center of Risk Prevention and Control of Refining and Chemical Equipment for State Market Regulation, China Special Equipment Inspection and Research Institute, Beijing 100029, ChinaSchool of Textile Science and Engineering, Tiangong University, Tianjin 300387, ChinaSchool of Textile Science and Engineering, Tiangong University, Tianjin 300387, ChinaSchool of Textile Science and Engineering, Tiangong University, Tianjin 300387, ChinaSchool of Textile Science and Engineering, Tiangong University, Tianjin 300387, ChinaThe introduction of long-chain branched structures into biodegradable polyesters can effectively improve the melt strength and blow-molding properties of polyesters. In this study, pentaerythritol (PER) was used as a branching agent to synthesize branched poly(butylene dodecanedioate) (PBD), and the resulting polymers were characterized by Nuclear Magnetic Resonance Proton Spectra (<sup>1</sup>H NMR) and Fourier Transform Infrared spectroscopy (FT-IR). It was found that the introduction of a small amount of PER (0.25–0.5 mol%) can generate branching and even crosslinking structures. Both impact strength and tensile modulus can be greatly improved by the introduction of a branching agent. With the introduction of 1 mol% PER content in PBD, the notched impact strength of PBD has been increased by 85%, and the tensile modulus has been increased by 206%. Wide-angle X-ray diffraction and differential scanning calorimetry results showed that PER-branched PBDs exhibited improved crystallization ability compared with linear PBDs. Dynamic viscoelastics revealed that shear-thickening behaviors can be found for all branched PBD under low shear rates.https://www.mdpi.com/2073-4360/15/15/3168biodegradablepolyesterpoly(butylene dodecanedioate)branchedmechanical propertiesrheological properties |
| spellingShingle | Ruixue Niu Zhening Zheng Xuedong Lv Benqiao He Sheng Chen Jiaying Zhang Yanhong Ji Yi Liu Liuchun Zheng Long-Chain Branched Bio-Based Poly(butylene dodecanedioate) Copolyester Using Pentaerythritol as Branching Agent: Synthesis, Thermo-Mechanical, and Rheological Properties Polymers biodegradable polyester poly(butylene dodecanedioate) branched mechanical properties rheological properties |
| title | Long-Chain Branched Bio-Based Poly(butylene dodecanedioate) Copolyester Using Pentaerythritol as Branching Agent: Synthesis, Thermo-Mechanical, and Rheological Properties |
| title_full | Long-Chain Branched Bio-Based Poly(butylene dodecanedioate) Copolyester Using Pentaerythritol as Branching Agent: Synthesis, Thermo-Mechanical, and Rheological Properties |
| title_fullStr | Long-Chain Branched Bio-Based Poly(butylene dodecanedioate) Copolyester Using Pentaerythritol as Branching Agent: Synthesis, Thermo-Mechanical, and Rheological Properties |
| title_full_unstemmed | Long-Chain Branched Bio-Based Poly(butylene dodecanedioate) Copolyester Using Pentaerythritol as Branching Agent: Synthesis, Thermo-Mechanical, and Rheological Properties |
| title_short | Long-Chain Branched Bio-Based Poly(butylene dodecanedioate) Copolyester Using Pentaerythritol as Branching Agent: Synthesis, Thermo-Mechanical, and Rheological Properties |
| title_sort | long chain branched bio based poly butylene dodecanedioate copolyester using pentaerythritol as branching agent synthesis thermo mechanical and rheological properties |
| topic | biodegradable polyester poly(butylene dodecanedioate) branched mechanical properties rheological properties |
| url | https://www.mdpi.com/2073-4360/15/15/3168 |
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