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Dong Y, Lin F, Zhao T, Wang M, Ning D, Hao X, Zhang Y, Zhou D, Zhao Y, Chen X, Wang B. Dispersion and Lubrication of Zinc Stearate in Polypropylene/Sodium 4-[(4-chlorobenzoyl) amino] Benzoate Nucleating Agent Composite. Polymers (Basel) 2024; 16:1942. [PMID: 39000797 PMCID: PMC11244173 DOI: 10.3390/polym16131942] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2024] [Revised: 07/03/2024] [Accepted: 07/05/2024] [Indexed: 07/17/2024] Open
Abstract
Zinc stearate (Znst) was physically blended with the sodium 4-[(4 chlorobenzoyl) amino] benzoate (SCAB) to obtain the SCAB-Znst composite nucleating agent. Znst was used to improve the dispersion property of SCAB and exert a lubricating effect on the PP matrix. The scanning electron microscopy and the fracture surface morphology of the PP/SCAB composite illustrated that the addition of Znst greatly reduced the aggregation phenomenon of SCAB in the PP matrix. The result of the rotary rheometer indicated that Znst exhibits internal lubrication in PP. The DSC result illustrated that the crystallization properties of PP were improved. Compared with pure PP, the Tc of the PP/SCAB composite increased by 1.44 °C (PP/Znst), 13.48 °C (PP/SCAB), and 14.96 °C (PP/SCAB-Znst), respectively. The flexural strength of pure PP, PP/SCAB, and PP/SCAB-Znst were 35.8 MPa, 38.8 MPa, and 40.6 MPa, respectively. The tensile strength of the PP/SCAB and PP/SCAB-Znst reached the values of 39.8 MPa and 42.9 MPa, respectively, compared with pure PP (34.1 MPa). The results demonstrated that Znst can promote the dispersion of SCAB in the PP matrix while exerting a lubricating effect, which enabled the enhancement of the crystalline and mechanical properties of PP.
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Affiliation(s)
- Yapeng Dong
- School of Chemical Engineering and Technology, Taiyuan University of Science and Technology, Taiyuan 030024, China; (Y.D.); (T.Z.); (M.W.); (D.N.); (X.H.); (Y.Z.); (D.Z.); (Y.Z.)
| | - Fuhua Lin
- School of Traffic Engineering, Shanxi Vocational University of Engineering Science and Technology, Jinzhong 030619, China;
| | - Tianjiao Zhao
- School of Chemical Engineering and Technology, Taiyuan University of Science and Technology, Taiyuan 030024, China; (Y.D.); (T.Z.); (M.W.); (D.N.); (X.H.); (Y.Z.); (D.Z.); (Y.Z.)
| | - Meizhen Wang
- School of Chemical Engineering and Technology, Taiyuan University of Science and Technology, Taiyuan 030024, China; (Y.D.); (T.Z.); (M.W.); (D.N.); (X.H.); (Y.Z.); (D.Z.); (Y.Z.)
| | - Dingyi Ning
- School of Chemical Engineering and Technology, Taiyuan University of Science and Technology, Taiyuan 030024, China; (Y.D.); (T.Z.); (M.W.); (D.N.); (X.H.); (Y.Z.); (D.Z.); (Y.Z.)
| | - Xinyu Hao
- School of Chemical Engineering and Technology, Taiyuan University of Science and Technology, Taiyuan 030024, China; (Y.D.); (T.Z.); (M.W.); (D.N.); (X.H.); (Y.Z.); (D.Z.); (Y.Z.)
| | - Yanli Zhang
- School of Chemical Engineering and Technology, Taiyuan University of Science and Technology, Taiyuan 030024, China; (Y.D.); (T.Z.); (M.W.); (D.N.); (X.H.); (Y.Z.); (D.Z.); (Y.Z.)
| | - Dan Zhou
- School of Chemical Engineering and Technology, Taiyuan University of Science and Technology, Taiyuan 030024, China; (Y.D.); (T.Z.); (M.W.); (D.N.); (X.H.); (Y.Z.); (D.Z.); (Y.Z.)
| | - Yuying Zhao
- School of Chemical Engineering and Technology, Taiyuan University of Science and Technology, Taiyuan 030024, China; (Y.D.); (T.Z.); (M.W.); (D.N.); (X.H.); (Y.Z.); (D.Z.); (Y.Z.)
| | - Xinde Chen
- Key Laboratory of Renewable Energy, Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou 510640, China
| | - Bo Wang
- School of Chemical Engineering and Technology, Taiyuan University of Science and Technology, Taiyuan 030024, China; (Y.D.); (T.Z.); (M.W.); (D.N.); (X.H.); (Y.Z.); (D.Z.); (Y.Z.)
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Yu X, Xiong C, Liang Y, Zhou X, Xue C. Construction of a highly stable natural silicate-supported molybdenum catalyst for efficient epoxidation of olefins. J Colloid Interface Sci 2024; 660:490-501. [PMID: 38246052 DOI: 10.1016/j.jcis.2024.01.117] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2023] [Revised: 01/13/2024] [Accepted: 01/16/2024] [Indexed: 01/23/2024]
Abstract
Epoxides are important bulk chemicals, playing irreplaceable role in the chemical industry, but facing serious pollution and low productivity in the production process. Therefore, the development of green and efficient epoxidation of olefins by stable catalysts with low prices is of great significance. In this study, a Mo-MATP catalyst was prepared by modifying Mo(CO)₆ on attapulgite through Si-O bonding. Mo-MATP exhibits excellent performance (99% yield of cyclooctane oxide, CYCO) and stability (80% selectivity of CYCO after 17 cycles), highly tert-butyl hydroperoxide (TBHP) utilization, and extensive substrate scalability. Furthermore, the in-situ Fourier Transform Infrared Spectroscopy (FT-IR), Electron Spin-resonance Spectroscopy (ESR) and High Resolution Mass Spectrometry (HRMS) spectra suggest that TBHP would be activated by Mo-MATP to generate peroxyl radicals, which then oxidize alkenes to their corresponding epoxides. In this study, the stable loading of Mo would largely solve the problem of Mo loss during the catalytic process, thus providing a stable and dispersed Mo active center, enabling the catalyst to possess high catalytic performance and recycling stability.
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Affiliation(s)
- Xingrui Yu
- School of Chemical Engineering and Technology, Sun Yat-Sen University, Zhuhai 519082, China
| | - Chao Xiong
- State Key Laboratory Breeding Base of Green-Chemical Synthesis Technology, Institute of Green Petroleum Processing and Light Hydrocarbon Conversion, College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310014, China
| | - Yichao Liang
- School of Chemical Engineering and Technology, Sun Yat-Sen University, Zhuhai 519082, China
| | - Xiantai Zhou
- School of Chemical Engineering and Technology, Sun Yat-Sen University, Zhuhai 519082, China; Huizhou Research Institute of Sun Yat-sen University, Huizhou 516081, China.
| | - Can Xue
- School of Chemical Engineering and Technology, Sun Yat-Sen University, Zhuhai 519082, China; Huizhou Research Institute of Sun Yat-sen University, Huizhou 516081, China; Guangdong Provincial Key Laboratory of Optical Chemicals, XinHuaYue Group, Maoming 525000, China.
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Fei B, Wang D, AlMasoud N, Yang H, Yang J, Alomar TS, Puangsin B, Xu BB, Algadi H, El-Bahy ZM, Guo Z, Shi Z. Bamboo fiber strengthened poly(lactic acid) composites with enhanced interfacial compatibility through a multi-layered coating of synergistic treatment strategy. Int J Biol Macromol 2023; 249:126018. [PMID: 37517757 DOI: 10.1016/j.ijbiomac.2023.126018] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2023] [Revised: 07/06/2023] [Accepted: 07/25/2023] [Indexed: 08/01/2023]
Abstract
In this study, a mild and eco-friendly synergistic treatment strategy was investigated to improve the interfacial compatibility of bamboo fibers with poly(lactic acid). The characterization results in terms of the chemical structure, surface morphology, thermal properties, and water resistance properties demonstrated a homogeneous dispersion and excellent interfacial compatibility of the treated composites. The excellent interfacial compatibility is due to multi-layered coating of bamboo fibers using synergistic treatment involving dilute alkali pretreatment, polydopamine coating and silane coupling agent modification. The composites obtained using the proposed synergistic treatment strategy exhibited excellent mechanical properties. Optimal mechanical properties were observed for composites with synergistically treated bamboo fiber mass proportion of 20 %. The tensile strength, elongation at break and tensile modulus of the treated composites were increased by 63.06 %, 183.04 % and 259.04 %, respectively, compared to the untreated composites. This synergistic treatment strategy and the remarkable performance of the treated composites have a wide range of applicability in bio-composites (such as industrial packaging, automotive lightweight interiors, and consumer goods).
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Affiliation(s)
- Binqi Fei
- Key Laboratory for Forest Resources Conservation and Utilization in the Southwest Mountains of China, Ministry of Education, Southwest Forestry University, Kunming 650224, China; Key Laboratory of State Forestry and Grassland Administration on Highly-Efficient Utilization of Forestry Biomass Resources in Southwest China, Southwest Forestry University, Kunming 650224, China
| | - Dawei Wang
- Key Laboratory of State Forestry and Grassland Administration on Highly-Efficient Utilization of Forestry Biomass Resources in Southwest China, Southwest Forestry University, Kunming 650224, China
| | - Najla AlMasoud
- Department of Chemistry, College of Science, Princess Nourah bint Abdulrahman University, P.O. Box 84428, Riyadh 11671, Saudi Arabia
| | - Haiyan Yang
- Key Laboratory of State Forestry and Grassland Administration on Highly-Efficient Utilization of Forestry Biomass Resources in Southwest China, Southwest Forestry University, Kunming 650224, China
| | - Jing Yang
- Key Laboratory of State Forestry and Grassland Administration on Highly-Efficient Utilization of Forestry Biomass Resources in Southwest China, Southwest Forestry University, Kunming 650224, China
| | - Taghrid S Alomar
- Department of Chemistry, College of Science, Princess Nourah bint Abdulrahman University, P.O. Box 84428, Riyadh 11671, Saudi Arabia
| | - Buapan Puangsin
- Department of Forest Products, Faculty of Forestry, Kasetsart University, Bangkok 10900, Thailand.
| | - Ben Bin Xu
- Integrated Composites Lab, Department of Mechanical and Construction Engineering, Northumbria University, Newcastle Upon Tyne NE1 8ST, UK
| | - Hassan Algadi
- Department of Electrical Engineering, Faculty of Engineering, Najran University, Najran 11001, Saudi Arabia
| | - Zeinhom M El-Bahy
- Department of Chemistry, Faculty of Science, Al-Azhar University, Nasr City 11884, Cairo, Egypt
| | - Zhanhu Guo
- Integrated Composites Lab, Department of Mechanical and Construction Engineering, Northumbria University, Newcastle Upon Tyne NE1 8ST, UK.
| | - Zhengjun Shi
- Key Laboratory for Forest Resources Conservation and Utilization in the Southwest Mountains of China, Ministry of Education, Southwest Forestry University, Kunming 650224, China; Key Laboratory of State Forestry and Grassland Administration on Highly-Efficient Utilization of Forestry Biomass Resources in Southwest China, Southwest Forestry University, Kunming 650224, China.
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