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Yang H, Du J. Composites made of Ginkgo biloba fibers and polylactic acid exhibit non-isothermal crystallization kinetics. Int J Biol Macromol 2023; 253:127232. [PMID: 37793533 DOI: 10.1016/j.ijbiomac.2023.127232] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2023] [Revised: 09/29/2023] [Accepted: 10/01/2023] [Indexed: 10/06/2023]
Abstract
Polymer crystallization affects material microstructure and the final product quality, and the crystallization kinetics that govern this process are critical. In this study, alkali-treated Ginkgo biloba fibers (GFs) were melt blended with polylactic acid (PLA) to obtain GF/PLA blends. The non-isothermal crystallization kinetics of the GF/PLA composites were subsequently investigated using the Avrami, Jeziorny, Ozawa, and Liu-Mo methods, and the crystallization activation energies of the systems were calculated by Kissinger and Friedman models. The results showed that the GFs significantly promoted PLA crystallization, accelerated the crystallization rate, and shortened the crystallization time. The Avrami method showed some deviation from the linear relationship due to the effect of secondary crystallization, while the numeric value obtained by the Jeziorny method increased with the cooling rate. The Ozawa method could only be used in a very narrow range of temperatures, while the Liu-Mo method showed a more desirable fit. Crystallization activation energy calculations showed that the GFs promoted an increase in the crystallization capacity of the blend and a decrease in the effective potential barrier. This resulted in more selective biocomposites than pure PLA, offering greater applicability in domains including tissue engineering and 3D printing.
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Affiliation(s)
- Hongwei Yang
- School of Materials Science & Engineering, North Minzu University, Yinchuan 750021, China
| | - Jianghua Du
- School of Materials Science & Engineering, North Minzu University, Yinchuan 750021, China.
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Qu D, Cai J, Huang F, Zhang J, Zuo H, Sun S, Liu J, Bai Y. High-Performance Optical PET Analysis via Non-Isothermal Crystallization Kinetics. Polymers (Basel) 2022; 14:polym14153044. [PMID: 35956559 PMCID: PMC9370514 DOI: 10.3390/polym14153044] [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: 06/28/2022] [Revised: 07/21/2022] [Accepted: 07/23/2022] [Indexed: 11/17/2022] Open
Abstract
The optical properties of PET have always been a problem that related research has been trying to break through. In the previous work, we modified PET by adding PSLDH (phosphate antioxidant) to obtain a PET film with excellent optical properties. Through non-isothermal crystallization kinetic analysis of modified PET, we hope to verify the conclusion of optical properties by the effect of PSLDH addition on the crystallization properties of PET. PET and PSLDH modified PET were tested by DSC at different cooling rates. The non-isothermal crystallization kinetic process was calculated and analyzed by Jeziorny and Mo methods and the non-isothermal crystallization activation energy was analyzed by Kissinger and Friedman methods by analyzing the DSC curves. The results show that the addition of PSLDH at 0.05 wt% can make the crystallization of PET smaller and slower, which is the same as the case required for excellent optical properties. At the same time, the results can also guide the processing of the optical PET film.
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Affiliation(s)
- Dezhi Qu
- College of Biological and Chemical Engineering, Guangxi University of Science and Technology, Liuzhou 545006, China; (J.C.); (F.H.); (J.Z.); (H.Z.)
- Guangxi Key Laboratory of Green Processing of Sugar Resources, College of Biological and Chemical Engineering, Guangxi University of Science and Technology, Liuzhou 545006, China
- Wuxi HIT New Material Research Institute Co., Ltd., Wuxi 214000, China;
- Correspondence: (D.Q.); (S.S.); (J.L.)
| | - Jiayang Cai
- College of Biological and Chemical Engineering, Guangxi University of Science and Technology, Liuzhou 545006, China; (J.C.); (F.H.); (J.Z.); (H.Z.)
- Guangxi Key Laboratory of Green Processing of Sugar Resources, College of Biological and Chemical Engineering, Guangxi University of Science and Technology, Liuzhou 545006, China
| | - Fei Huang
- College of Biological and Chemical Engineering, Guangxi University of Science and Technology, Liuzhou 545006, China; (J.C.); (F.H.); (J.Z.); (H.Z.)
- Guangxi Key Laboratory of Green Processing of Sugar Resources, College of Biological and Chemical Engineering, Guangxi University of Science and Technology, Liuzhou 545006, China
| | - Jinyu Zhang
- College of Biological and Chemical Engineering, Guangxi University of Science and Technology, Liuzhou 545006, China; (J.C.); (F.H.); (J.Z.); (H.Z.)
- Guangxi Key Laboratory of Green Processing of Sugar Resources, College of Biological and Chemical Engineering, Guangxi University of Science and Technology, Liuzhou 545006, China
| | - Huajiang Zuo
- College of Biological and Chemical Engineering, Guangxi University of Science and Technology, Liuzhou 545006, China; (J.C.); (F.H.); (J.Z.); (H.Z.)
| | - Shuai Sun
- Wuxi HIT New Material Research Institute Co., Ltd., Wuxi 214000, China;
- School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin 150001, China
- Correspondence: (D.Q.); (S.S.); (J.L.)
| | - Jinghua Liu
- College of Biological and Chemical Engineering, Guangxi University of Science and Technology, Liuzhou 545006, China; (J.C.); (F.H.); (J.Z.); (H.Z.)
- Correspondence: (D.Q.); (S.S.); (J.L.)
| | - Yongping Bai
- Wuxi HIT New Material Research Institute Co., Ltd., Wuxi 214000, China;
- School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin 150001, China
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Investigation on the solid–liquid (S–L) phase separation of the PE/LP blend with different molecular weight polyethylene. Polym Bull (Berl) 2021. [DOI: 10.1007/s00289-020-03510-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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