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Wang T, Ke X, Li J, Wang Y, Guan W, Sha X, Yang C, Zhang TC. Synergistic preparation and application in PCU of α-calcium sulfate hemihydrate whiskers from phosphogypsum and electrolytic manganese residue. Sci Rep 2024; 14:6260. [PMID: 38491074 PMCID: PMC10943202 DOI: 10.1038/s41598-024-56817-5] [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: 01/11/2024] [Accepted: 03/11/2024] [Indexed: 03/18/2024] Open
Abstract
The α-calcium sulfate hemihydrate whiskers (α-CSHWs) were first prepared using phosphogypsum (PG) and electrolytic manganese residue (EMR) as raw materials for coating urea, demonstrating excellent controlled-release properties. The effects of different reaction conditions on α-CSHWs, achieved by optimizing the reaction time, the concentrations of NH4+, Mn2+, and other factors, were discussed. Results showed that when the EMR content was 25 wt%, the reaction temperature was 100 °C, and the reaction time was 3 h, α-CSHWs with a length-to-diameter ratio of 39 were obtained. Through experiments and density functional theory (DFT), the mechanism of α-CSHWs preparation was elucidated. The results show that the addition of EMR reduces the content of impurity ions PO43- and F- in PG while introducing NH4+ and Mn2+. Interestingly, both NH4+ and Mn2+ can reduce the nucleation time of α-CSHWs, while PO43-, Mn2+, and F- are more likely to adsorb on the (0 0 6) crystal plane of α-CSHWs, NH4+ readily adsorbs on the (4 0 0) crystal plane. The controlled-release performance of modified α-CSHWs incorporated into polyurethane-coated urea (PCU) was investigated, and it was found that the addition of Mα significantly prolonged the nutrient release period, with the period extending up to 116 days for coatings of 5wt% and above. This work not only enhances the efficiency of PG and EMR utilization but also serves as a reference for the straightforward synthesis and application of α-CSHWs.
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Affiliation(s)
- Ting Wang
- Key Laboratory of Catalysis Conversion and Energy Materials Chemistry of Education, Engineering Research Center for Heavy Metal Pollution Control of Hubei Province, College of Resources and Environmental Science, South-Central Minzu University, Wuhan, 430074, China
| | - Xuan Ke
- Key Laboratory of Catalysis Conversion and Energy Materials Chemistry of Education, Engineering Research Center for Heavy Metal Pollution Control of Hubei Province, College of Resources and Environmental Science, South-Central Minzu University, Wuhan, 430074, China
| | - Jia Li
- Key Laboratory of Catalysis Conversion and Energy Materials Chemistry of Education, Engineering Research Center for Heavy Metal Pollution Control of Hubei Province, College of Resources and Environmental Science, South-Central Minzu University, Wuhan, 430074, China.
| | - Ying Wang
- Key Laboratory of Catalysis Conversion and Energy Materials Chemistry of Education, Engineering Research Center for Heavy Metal Pollution Control of Hubei Province, College of Resources and Environmental Science, South-Central Minzu University, Wuhan, 430074, China
| | - Weiwei Guan
- Key Laboratory of Catalysis Conversion and Energy Materials Chemistry of Education, Engineering Research Center for Heavy Metal Pollution Control of Hubei Province, College of Resources and Environmental Science, South-Central Minzu University, Wuhan, 430074, China
| | - Xia Sha
- Key Laboratory of Catalysis Conversion and Energy Materials Chemistry of Education, Engineering Research Center for Heavy Metal Pollution Control of Hubei Province, College of Resources and Environmental Science, South-Central Minzu University, Wuhan, 430074, China
| | - Chenjing Yang
- Key Laboratory of Catalysis Conversion and Energy Materials Chemistry of Education, Engineering Research Center for Heavy Metal Pollution Control of Hubei Province, College of Resources and Environmental Science, South-Central Minzu University, Wuhan, 430074, China
| | - Tian C Zhang
- Civil & Environmental Engineering Department, College of Engineering, University of Nebraska-Lincoln, Omaha, NE, 68182, USA
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Wang X, Fu X, Luo D, Hou R, Li P, Chen Y, Zhang X, Meng X, Yue Y, Liu J. 3D printed high-precision porous scaffolds prepared by fused deposition modeling induce macrophage polarization to promote bone regeneration. Biomed Mater 2024; 19:035006. [PMID: 38422525 DOI: 10.1088/1748-605x/ad2ed0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2023] [Accepted: 02/29/2024] [Indexed: 03/02/2024]
Abstract
Macrophage-mediated bone immune responses significantly influence the repair of bone defects when utilizing tissue-engineered scaffolds. Notably, the scaffolds' physical structure critically impacts macrophage polarization. The optimal pore size for facilitating bone repair remains a topic of debate due to the imprecision of traditional methods in controlling scaffold pore dimensions and spatial architecture. In this investigation, we utilized fused deposition modeling (FDM) technology to fabricate high-precision porous polycaprolactone (PCL) scaffolds, aiming to elucidate the impact of pore size on macrophage polarization. We assessed the scaffolds' mechanical attributes and biocompatibility. Real-time quantitative reverse transcription polymerase chain reaction was used to detect the expression levels of macrophage-related genes, and enzyme linked immunosorbent assay for cytokine secretion levels.In vitroosteogenic capacity was determined through alkaline phosphatase and alizarin red staining. Our findings indicated that macroporous scaffolds enhanced macrophage adhesion and drove their differentiation towards the M2 phenotype. This led to the increased production of anti-inflammatory factors and a reduction in pro-inflammatory agents, highlighting the scaffolds' immunomodulatory capabilities. Moreover, conditioned media from macrophages cultured on these macroporous scaffolds bolstered the osteogenic differentiation of bone marrow mesenchymal stem cells, exhibiting superior osteogenic differentiation potential. Consequently, FDM-fabricated PCL scaffolds, with precision-controlled pore sizes, present promising prospects as superior materials for bone tissue engineering, leveraging the regulation of macrophage polarization.
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Affiliation(s)
- Xiangyu Wang
- Shanxi Medical University School and Hospital of Stomatology, Taiyuan 030001, People's Republic of China
- Shanxi Province Key Laboratory of Oral Diseases Prevention and New Materials, Taiyuan 030001, People's Republic of China
| | - Xinyu Fu
- Shanxi Medical University School and Hospital of Stomatology, Taiyuan 030001, People's Republic of China
- Shanxi Province Key Laboratory of Oral Diseases Prevention and New Materials, Taiyuan 030001, People's Republic of China
| | - Dongmei Luo
- Shanxi Medical University School and Hospital of Stomatology, Taiyuan 030001, People's Republic of China
- Shanxi Province Key Laboratory of Oral Diseases Prevention and New Materials, Taiyuan 030001, People's Republic of China
| | - Ruxia Hou
- Shanxi Medical University School and Hospital of Stomatology, Taiyuan 030001, People's Republic of China
- Shanxi Province Key Laboratory of Oral Diseases Prevention and New Materials, Taiyuan 030001, People's Republic of China
| | - Peiwen Li
- Shanxi Medical University School and Hospital of Stomatology, Taiyuan 030001, People's Republic of China
- Shanxi Province Key Laboratory of Oral Diseases Prevention and New Materials, Taiyuan 030001, People's Republic of China
| | - Yurou Chen
- Shanxi Medical University School and Hospital of Stomatology, Taiyuan 030001, People's Republic of China
- Shanxi Province Key Laboratory of Oral Diseases Prevention and New Materials, Taiyuan 030001, People's Republic of China
| | - Xinyao Zhang
- Shanxi Medical University School and Hospital of Stomatology, Taiyuan 030001, People's Republic of China
- Shanxi Province Key Laboratory of Oral Diseases Prevention and New Materials, Taiyuan 030001, People's Republic of China
| | - Xiangjie Meng
- Shanxi Medical University School and Hospital of Stomatology, Taiyuan 030001, People's Republic of China
- Shanxi Province Key Laboratory of Oral Diseases Prevention and New Materials, Taiyuan 030001, People's Republic of China
| | - Yingge Yue
- Shanxi Medical University School and Hospital of Stomatology, Taiyuan 030001, People's Republic of China
- Shanxi Province Key Laboratory of Oral Diseases Prevention and New Materials, Taiyuan 030001, People's Republic of China
| | - Junyu Liu
- Shanxi Medical University School and Hospital of Stomatology, Taiyuan 030001, People's Republic of China
- Shanxi Province Key Laboratory of Oral Diseases Prevention and New Materials, Taiyuan 030001, People's Republic of China
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Tüzün-Antepli B, Elçin AE, Elçin YM. Construction of micro-grooved PCL/nanohydroxyapatite membranes by non-solvent induced phase separation method and its evaluation for use as a substrate for human periodontal ligament fibroblasts. Chem Eng Sci 2022. [DOI: 10.1016/j.ces.2021.117120] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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4
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Wang S, Gu R, Wang F, Zhao X, Yang F, Xu Y, Yan F, Zhu Y, Xia D, Liu Y. 3D-Printed PCL/Zn scaffolds for bone regeneration with a dose-dependent effect on osteogenesis and osteoclastogenesis. Mater Today Bio 2022; 13:100202. [PMID: 35036897 PMCID: PMC8753274 DOI: 10.1016/j.mtbio.2021.100202] [Citation(s) in RCA: 23] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2021] [Revised: 12/20/2021] [Accepted: 12/29/2021] [Indexed: 12/16/2022] Open
Abstract
Polycaprolactone (PCL) is a polymer material suitable for being prepared into porous scaffolds used in bone tissue engineering, however, insufficient osteogenic ability and mechanical strength limit its application. Zinc (Zn) alloy with proper mechanical strength and osteogenesis is a promising biodegradable metal that have attracted much attention. Herein, we combined the advantages of PCL and Zn by fabricating PCL/Zn composite scaffolds with different Zn powder contents (1 wt%, 2 wt%, 3 wt%) through fused deposition modelling. The mechanical property, cytocompatibility and Zn ions release behavior of PCL/Zn scaffolds were analyzed in vitro. The osteogenesis and osteoclastogenesis properties of the scaffolds were evaluated by being implanted into Sprague-Dawley rats calvaria defect. Results showed that the PCL/Zn scaffolds exhibited improved mechanical properties and cytocompatibility compared with the pure PCL scaffolds. At 8 weeks after in vivo implantaion, the addition of Zn powder promoted new bone formation, in a dose-dependent manner. The scaffolds with 2 wt% Zn displayed the best osteogenic effect, while the osteogenic effect was slightly reduced in the scaffolds with 3 wt% Zn. In the studied Zn contents, the PCL/Zn scaffolds gradually promoted osteoclastogenesis with increasd Zn content. In the 3 wt% Zn group, TRAP-positive cells were observed on the newly formed bone edges around the scaffolds. These dose-dependent effects were verified in vitro using MC3T3-E1 and RAW264.7 cells. Finally, we revealed that Zn2+ regulated osteogenesis and osteoclastogenesis by activation of the Wnt/β-catenin and NF-κB signalling pathways, respectively.
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Affiliation(s)
- Siyi Wang
- Department of Prosthodontics, Peking University School and Hospital of Stomatology, Beijing, 100081, China
- National Center of Stomatology, National Clinical Research Center for Oral Diseases, National Engineering Laboratory for Digital and Material Technology of Stomatology, Beijing Key Laboratory of Digital Stomatology, Research Center of Engineering and Technology for Computerized Dentistry Ministry of Health, NMPA Key Laboratory for Dental Materials, No.22, Zhongguancun South Avenue, Haidian District, Beijing, 100081, PR China
| | - Ranli Gu
- Department of Prosthodontics, Peking University School and Hospital of Stomatology, Beijing, 100081, China
- National Center of Stomatology, National Clinical Research Center for Oral Diseases, National Engineering Laboratory for Digital and Material Technology of Stomatology, Beijing Key Laboratory of Digital Stomatology, Research Center of Engineering and Technology for Computerized Dentistry Ministry of Health, NMPA Key Laboratory for Dental Materials, No.22, Zhongguancun South Avenue, Haidian District, Beijing, 100081, PR China
| | - Feilong Wang
- Department of Prosthodontics, Peking University School and Hospital of Stomatology, Beijing, 100081, China
- National Center of Stomatology, National Clinical Research Center for Oral Diseases, National Engineering Laboratory for Digital and Material Technology of Stomatology, Beijing Key Laboratory of Digital Stomatology, Research Center of Engineering and Technology for Computerized Dentistry Ministry of Health, NMPA Key Laboratory for Dental Materials, No.22, Zhongguancun South Avenue, Haidian District, Beijing, 100081, PR China
| | - Xiao Zhao
- Department of Prosthodontics, Peking University School and Hospital of Stomatology, Beijing, 100081, China
- National Center of Stomatology, National Clinical Research Center for Oral Diseases, National Engineering Laboratory for Digital and Material Technology of Stomatology, Beijing Key Laboratory of Digital Stomatology, Research Center of Engineering and Technology for Computerized Dentistry Ministry of Health, NMPA Key Laboratory for Dental Materials, No.22, Zhongguancun South Avenue, Haidian District, Beijing, 100081, PR China
| | - Fan Yang
- Department of Prosthodontics, Peking University School and Hospital of Stomatology, Beijing, 100081, China
- National Center of Stomatology, National Clinical Research Center for Oral Diseases, National Engineering Laboratory for Digital and Material Technology of Stomatology, Beijing Key Laboratory of Digital Stomatology, Research Center of Engineering and Technology for Computerized Dentistry Ministry of Health, NMPA Key Laboratory for Dental Materials, No.22, Zhongguancun South Avenue, Haidian District, Beijing, 100081, PR China
| | - Yuqian Xu
- Department of Prosthodontics, Peking University School and Hospital of Stomatology, Beijing, 100081, China
- National Center of Stomatology, National Clinical Research Center for Oral Diseases, National Engineering Laboratory for Digital and Material Technology of Stomatology, Beijing Key Laboratory of Digital Stomatology, Research Center of Engineering and Technology for Computerized Dentistry Ministry of Health, NMPA Key Laboratory for Dental Materials, No.22, Zhongguancun South Avenue, Haidian District, Beijing, 100081, PR China
| | - Fanyu Yan
- Department of Prosthodontics, Peking University School and Hospital of Stomatology, Beijing, 100081, China
- National Center of Stomatology, National Clinical Research Center for Oral Diseases, National Engineering Laboratory for Digital and Material Technology of Stomatology, Beijing Key Laboratory of Digital Stomatology, Research Center of Engineering and Technology for Computerized Dentistry Ministry of Health, NMPA Key Laboratory for Dental Materials, No.22, Zhongguancun South Avenue, Haidian District, Beijing, 100081, PR China
| | - Yuan Zhu
- Department of Prosthodontics, Peking University School and Hospital of Stomatology, Beijing, 100081, China
- National Center of Stomatology, National Clinical Research Center for Oral Diseases, National Engineering Laboratory for Digital and Material Technology of Stomatology, Beijing Key Laboratory of Digital Stomatology, Research Center of Engineering and Technology for Computerized Dentistry Ministry of Health, NMPA Key Laboratory for Dental Materials, No.22, Zhongguancun South Avenue, Haidian District, Beijing, 100081, PR China
| | - Dandan Xia
- National Center of Stomatology, National Clinical Research Center for Oral Diseases, National Engineering Laboratory for Digital and Material Technology of Stomatology, Beijing Key Laboratory of Digital Stomatology, Research Center of Engineering and Technology for Computerized Dentistry Ministry of Health, NMPA Key Laboratory for Dental Materials, No.22, Zhongguancun South Avenue, Haidian District, Beijing, 100081, PR China
- Department of Dental Materials, Peking University School and Hospital of Stomatology, Beijing, 100081, China
| | - Yunsong Liu
- Department of Prosthodontics, Peking University School and Hospital of Stomatology, Beijing, 100081, China
- National Center of Stomatology, National Clinical Research Center for Oral Diseases, National Engineering Laboratory for Digital and Material Technology of Stomatology, Beijing Key Laboratory of Digital Stomatology, Research Center of Engineering and Technology for Computerized Dentistry Ministry of Health, NMPA Key Laboratory for Dental Materials, No.22, Zhongguancun South Avenue, Haidian District, Beijing, 100081, PR China
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Jha K, Tyagi YK, Kumar R, Sharma S, Huzaifah MRM, Li C, Ilyas RA, Dwivedi SP, Saxena A, Pramanik A. Assessment of Dimensional Stability, Biodegradability, and Fracture Energy of Bio-Composites Reinforced with Novel Pine Cone. Polymers (Basel) 2021; 13:3260. [PMID: 34641075 PMCID: PMC8512806 DOI: 10.3390/polym13193260] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2021] [Revised: 09/15/2021] [Accepted: 09/16/2021] [Indexed: 12/17/2022] Open
Abstract
In this investigation, biodegradable composites were fabricated with polycaprolactone (PCL) matrix reinforced with pine cone powder (15%, 30%, and 45% by weight) and compatibilized with graphite powder (0%, 5%, 10%, and 15% by weight) in polycaprolactone matrix by compression molding technique. The samples were prepared as per ASTM standard and tested for dimensional stability, biodegradability, and fracture energy with scanning electron micrographs. Water-absorption and thickness-swelling were performed to examine the dimensional stability and tests were performed at 23 °C and 50% humidity. Results revealed that the composites with 15 wt % of pine cone powder (PCP) have shown higher dimensional stability as compared to other composites. Bio-composites containing 15-45 wt % of PCP with low graphite content have shown higher disintegration rate than neat PCL. Fracture energy for crack initiation in bio-composites was increased by 68% with 30% PCP. Scanning electron microscopy (SEM) of the composites have shown evenly-distributed PCP particles throughout PCL-matrix at significantly high-degrees or quantities of reinforcing.
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Affiliation(s)
- Kanishka Jha
- School of Mechanical Engineering, Lovely Professional University, Phagwara 144411, India;
| | - Yogesh K. Tyagi
- Department of Mechanical Engineering, DIT University, Dehradun 248009, India;
| | - Rajeev Kumar
- School of Mechanical Engineering, Lovely Professional University, Phagwara 144411, India;
| | - Shubham Sharma
- Department of Mechanical Engineering, IK Gujral Punjab Technical University, Main Campus-Kapurthala, Ibban 144603, India
| | - Muhammad Roslim Muhammad Huzaifah
- Department of Crop Science, Faculty of Agricultural Science and Forestry, Universiti Putra Malaysia Bintulu Campus, Bintulu 97000, Malaysia
| | - Changhe Li
- School of Mechanical and Automotive Engineering, Qingdao University of Technology, Qingdao 266520, China;
| | - Rushdan Ahmad Ilyas
- School of Chemical and Energy Engineering, Faculty of Engineering, Universiti Teknologi Malaysia, Johor Bahru 81310, Malaysia;
- Centre for Advanced Composite Materials, Universiti Teknologi Malaysia, Johor Bahru 81310, Malaysia
| | - Shashi Prakash Dwivedi
- Department of Mechanical Engineering, G.L. Bajaj Institute of Technology and Management, Greater Noida 201306, India; (S.P.D.); (A.S.)
| | - Ambuj Saxena
- Department of Mechanical Engineering, G.L. Bajaj Institute of Technology and Management, Greater Noida 201306, India; (S.P.D.); (A.S.)
| | - Alokesh Pramanik
- School of Civil and Mechanical Engineering, Curtin University, Perth 6102, Australia;
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Abstract
Abstract
Polycaprolactone (PCL) is a biodegradable polyester that has advantages over other biopolymers, making it an extensively researched polymer. PCL is a hydrophobic, slow-degrading, synthetic polymer making it particularly interesting for the preparation of long-term implantable devices and a variety of drug delivery systems. Recently, PCL has been used for additional applications including food packaging and tissue engineering. In this chapter, the processing methods and characterization of PCL will be discussed. The chapter will summarize the synthesis of poly(α-hydroxy acid) and the ring-opening polymerization of PCL. Discussion on the biodegradability of PCL will be reviewed. The biomedical applications of PCL, such as, drug-delivery systems, medical devices, and tissue engineering will be also summarized. Finally, the chapter will conclude with a characterization section outlining recent studies focusing on PCL based composites and films.
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Naz F, Ciprian M, Mousavi B, Chaemchuen S, Zhu M, Yan S, Verpoort F. Solvent-free synthesis of cyclic polycaprolactone catalysed by MOF-derived ZnO/NCs catalysts. Eur Polym J 2021. [DOI: 10.1016/j.eurpolymj.2020.110127] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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Gopinath VK, Soumya S, Chakrapani VY, Kumar TSS. Odontogenic differentiation of inflamed dental pulp stem cells (IDPSCs) on polycaprolactone (PCL) nanofiber blended with hydroxyapatite. Dent Mater J 2020; 40:312-321. [PMID: 33055433 DOI: 10.4012/dmj.2020-005] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
The objective of this study was to develop electrospun polycaprolactone (PCL) membranes blended with hydroxyapatite (HA) and evaluate its potential in differentiating inflamed dental pulp stem/progenitor cells (IDPSCs) into odontoblasts. Electrospun nanofibrous membrane consisting of PCL blended with 10 wt% and 15 wt% of HA were fabricated and the characterization was done by Scanning electron microscopy (SEM), Fourier- transform infrared spectroscopy (FTIR), X-ray diffraction (XRD) and contact angle analysis. Cytocompatibility, cell adhesion and odontogenic differentiation ability of the membranes were assessed by MTT, Live/Dead, SEM/DAPI and qPCR studies. The mineral deposition ability of the membranes with IDPSCs was estimated by SEM-EDS. The SEM analysis revealed a nanofibrous texture with an average fiber diameter of 140 nm for PCL, 220 nm for PCL10%HA and 250 nm for PCL15%HA. Among the membranes tested, PCL10%HA favored positive cell attachments, upregulated expression of DSPP and ALP gene and higher Ca/P ratio compared to PCL and PCL15%HA.
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Affiliation(s)
| | - Sheela Soumya
- Sharjah Institute for Medical Research, University of Sharjah, University City
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Luo JH, Han SH, Wang J, Liu H, Zhu XD, Chen SH. Effects of Boric Acid Ester Modified Magnesium Borate Whisker on the Mechanical Properties and Crystallization Kinetics of Polypropylene Composites. MATERIALS 2020; 13:ma13071698. [PMID: 32260498 PMCID: PMC7178699 DOI: 10.3390/ma13071698] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/11/2020] [Revised: 03/10/2020] [Accepted: 03/11/2020] [Indexed: 11/16/2022]
Abstract
Polypropylene (PP) is notch sensitive and brittle under severe conditions of deformation, limiting wider range of its usage as a structural load-bearing polymer. Hence, in this work the magnesium borate whisker (MBw), with similar mechanical properties to carbon fiber but much less expensive than polycrystalline silicon carbide, was modified by boric acid ester (BAE) and then used to fabricate PP composites. The mechanical properties, morphology, and non-isothermal crystallization property of virgin PP, PP/MBw, and PP/BAE-MBw composites were studied through mechanical testing, scanning electron microscopy (SEM), and differential scanning calorimetry (DSC), respectively. The non-isothermal crystallization data was analyzed via Mo, Kissinger, and Dobreva methods. The results reveal that the incorporation of BAE-MBw into PP matrix results in higher tensile strength and impact strength than those of virgin PP and PP/MBw composite. The activation energies based on Kissinger were 190.20 kJ/mol for virgin PP, 206.59 kJ/mol for PP/MBw, and 218.98 kJ/mol for PP/BAE-MBw. The nucleation activities of whiskers determined by the Dobreva model were 0.86 for PP/MBw and 0.75 for PP/BAE-MBw. As a result, the whiskers, especially the modified whiskers, act as active substrates to facilitate heterogeneous nucleation, which leads to an increase in crystallization rate.
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Affiliation(s)
- Jin-Hua Luo
- College of Vanadium and Titanium, Panzhihua University, Panzhihua 617000, China;
| | - Shi-Hu Han
- College of Materials and Chemistry & Chemical Engineering, Chengdu University of Technology, Chengdu 610059, China;
- Eternal Chemical Co., Ltd., Chengdu 611535, China
| | - Juan Wang
- College of Mechanical Engineering, Chengdu University, Chengdu 610106, China; (J.W.); (H.L.)
| | - Hui Liu
- College of Mechanical Engineering, Chengdu University, Chengdu 610106, China; (J.W.); (H.L.)
| | - Xiao-Dong Zhu
- College of Materials and Chemistry & Chemical Engineering, Chengdu University of Technology, Chengdu 610059, China;
- College of Mechanical Engineering, Chengdu University, Chengdu 610106, China; (J.W.); (H.L.)
- Correspondence: (X.-D.Z.); (S.-H.C.)
| | - Shan-Hua Chen
- College of Materials and Chemistry & Chemical Engineering, Chengdu University of Technology, Chengdu 610059, China;
- Correspondence: (X.-D.Z.); (S.-H.C.)
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Yang JN, Nie SB, Chen K, Tao YL, Zhu JB. Kinetic Analysis on Thermal Decomposition of Poly(lactic acid) Toughened by Calcium Sulfate Whiskers. INT POLYM PROC 2019. [DOI: 10.3139/217.3611] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
AbstractThe biocomposites of poly (lactic acid) (PLA) involving 15 % mass fraction of calcium sulfate whiskers (CSW) were prepared via melt-blending technology, in an effort of toughening PLA and enhancing the thermal stability. The morphological structure, impact toughness, thermal stability as well as kinetic analysis on thermal decomposition for PLA/CSW composites were performed thoroughly. The results showed that CSW was organized successfully via silanization, helping to form well-bonded interfaces, and accordingly, the impact toughness increased remarkably. The thermal stability was enhanced by adding whiskers, leading to increased decomposition temperature and decreased mass conversion rate. Kinetic analysis revealed the great dispersions on the reaction order and activation energy. Though, in comparison to pure PLA, the reaction order of PLA/CSW composites increased based on calculation methods except for Carrasco's, the activation energy of the composites declined independently of the applied mathematical models, meaning that thermal decomposition of PLA phase was accelerated by the introduced CSW.
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Affiliation(s)
- J.-N. Yang
- 1School of Materials and Engineering, Anhui University of Science and Technology, Huainan, PRC
| | - S.-B. Nie
- 2School of Energy Resources and Safety, Anhui University of Science and Technology, Huainan, PRC
| | - K. Chen
- 3College of Engineering, Nanjing Agriculture University, Nanjing, PRC
| | - Y.-L. Tao
- 1School of Materials and Engineering, Anhui University of Science and Technology, Huainan, PRC
| | - J.-B. Zhu
- 1School of Materials and Engineering, Anhui University of Science and Technology, Huainan, PRC
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Wang J, Fan S, Hou S, Chen R, Xiang L, Yang C. Effects of Cationic Polyacrylamide on Hydrothermal Formation of Ultralong α-CaSO 4
·0.5H 2
O Whiskers. CRYSTAL RESEARCH AND TECHNOLOGY 2019. [DOI: 10.1002/crat.201800224] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Jing Wang
- School of Chemical and Material Engineering; Jiangnan University; Wuxi 214122 China
| | - Saiying Fan
- School of Chemical and Material Engineering; Jiangnan University; Wuxi 214122 China
| | - Sichao Hou
- Department of Chemical Engineering; Tsinghua University; Beijing 100084 China
| | - Ruosong Chen
- Department of Chemical Engineering; Tsinghua University; Beijing 100084 China
| | - Lan Xiang
- Department of Chemical Engineering; Tsinghua University; Beijing 100084 China
| | - Cheng Yang
- School of Chemical and Material Engineering; Jiangnan University; Wuxi 214122 China
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12
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Liang JZ. Relationship between fractal dimensions of fracture surface and impact toughness of polycaprolactone/nano-CaCO 3composites. ADVANCES IN POLYMER TECHNOLOGY 2018. [DOI: 10.1002/adv.22082] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Ji-Zhao Liang
- Key Laboratory of Polymer Processing Engineering; Ministry of Education; School of Mechanical and Automotive Engineering; South China University of Technology; Guangzhou China
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13
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Shpigel T, Cohen Taguri G, Lewitus DY. Controlling drug delivery from polymer microspheres by exploiting the complex interrelationship of excipient and drug crystallization. J Appl Polym Sci 2018. [DOI: 10.1002/app.47227] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Tal Shpigel
- Plastics and Polymer Engineering Department; Shenkar College; Ramat-Gan 6262528 Israel
| | - Gili Cohen Taguri
- Center for Nanotechnology and Advanced Materials; Bar-Ilan University; Ramat Gan 5290002 Israel
| | - Dan Y. Lewitus
- Plastics and Polymer Engineering Department; Shenkar College; Ramat-Gan 6262528 Israel
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14
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Fukugaichi S, Matsue N. One-Step Synthesis of Calcium Sulfate Hemihydrate Nanofibers from Calcite at Room Temperature. ACS OMEGA 2018; 3:2820-2824. [PMID: 31458558 PMCID: PMC6641323 DOI: 10.1021/acsomega.7b01994] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/15/2017] [Accepted: 02/26/2018] [Indexed: 05/17/2023]
Abstract
In recent years, researchers have made significant progress in the development of inorganic nanofibers (including nanowires). Typically, inorganic nanofibers are synthesized via crystal growth in solution; however, a limited number of studies have focused on their preparation directly from solid raw materials (with no examples of synthesis conducted at room temperature and atmospheric pressure). In this work, we successfully synthesized nanofibers of calcium sulfate hemihydrate (bassanite, CaSO4·0.5H2O) at 20 °C and 1 atm by mixing calcite and dilute sulfuric acid in methanol. The bassanite nanofibers are concluded to be synthesized by the formation of calcium sulfate on the calcite surface and its simultaneous reaction with the generated H2O. Because bassanite exhibits useful physical properties that include high mechanical strength, high thermal stability, and excellent chemical stability, its nanofibers can be widely applied to rubber, plastics, antifriction materials, and paper as a strengthening agent, for heat-resistance, or as a flame retardant, or for creep resistance.
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Affiliation(s)
- Satoru Fukugaichi
- Paper
Industry Innovation Center, Ehime University, 3 Bunkyo-cho, Matsuyama 790-8577, Japan
- E-mail:
| | - Naoto Matsue
- Faculty
of Agriculture, Ehime University, 3-5-7 Tarumi, Matsuyama 790-8566, Japan
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15
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Yang JN, Nie SB. Effects of calcium sulfate whisker on the mechanical property, morphological structure and thermal degradation of poly (lactic acid) composites. Polym Degrad Stab 2017. [DOI: 10.1016/j.polymdegradstab.2017.08.031] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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16
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Chakrapani VY, Kumar TSS, Raj DK, Kumary TV. Electrospun 3D composite scaffolds for craniofacial critical size defects. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2017; 28:119. [PMID: 28685233 DOI: 10.1007/s10856-017-5933-4] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/22/2017] [Accepted: 06/20/2017] [Indexed: 06/07/2023]
Abstract
Critical size defects in the craniofacial region can be effectively treated using three dimensional (3D) composite structures mimicking natural extra cellular matrix (ECM) and incorporated with bioactive ceramics. In this study we have shown that the dynamic liquid bath collector can be used to form electrospun polycaprolactone (PCL)-hydroxyapatite (HA) composite structure as unique 3D scaffold. The structure was found to have three distinct sections (base, stem and head) based on the mechanism of its formation and morphology. The size of the head portion was around 15 mm and was found to vary with the process parameters. Scanning electron microscopy (SEM) analysis revealed that the base had random fibres while the fibres in stem and head sections were aligned but perpendicular to each other. X-ray diffraction (XRD) analysis also showed an increase in the crystallinity index of the fibres from base to head section. Cytotoxicity and cytocompatibility studies using human osteosarcoma (HOS) cells showed good cell adhesion and proliferation indicating the suitability of the 3D structure for craniofacial graft applications.
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Affiliation(s)
- V Yogeshwar Chakrapani
- Medical Materials Laboratory, Indian Institute of Technology Madras, Chennai, 600036, India
- Tissue Culture Laboratory, Sree Chitra Tirunal Institute for Medical Sciences and Technology, Poojappura, Trivandrum, 695 012, India
| | - T S Sampath Kumar
- Medical Materials Laboratory, Indian Institute of Technology Madras, Chennai, 600036, India.
| | - Deepa K Raj
- Tissue Culture Laboratory, Sree Chitra Tirunal Institute for Medical Sciences and Technology, Poojappura, Trivandrum, 695 012, India
| | - T V Kumary
- Tissue Culture Laboratory, Sree Chitra Tirunal Institute for Medical Sciences and Technology, Poojappura, Trivandrum, 695 012, India
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17
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Obasi HC, Chaudhry AA, Ijaz K, Akhtar H, Malik MH. Development of biocomposites from coir fibre and poly (caprolactone) by solvent casting technique. Polym Bull (Berl) 2017. [DOI: 10.1007/s00289-017-2122-z] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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18
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Incorporation of bioactive glass nanoparticles in electrospun PCL/chitosan fibers by using benign solvents. Bioact Mater 2017; 3:55-63. [PMID: 29744442 PMCID: PMC5935662 DOI: 10.1016/j.bioactmat.2017.05.003] [Citation(s) in RCA: 64] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2016] [Revised: 05/07/2017] [Accepted: 05/09/2017] [Indexed: 11/22/2022] Open
Abstract
The use of bioactive glass (BG) particles as a filler for the development of composite electrospun fibers has already been widely reported and investigated. The novelty of the present research work is represented by the use of benign solvents (like acetic acid and formic acid) for electrospinning of composite fibers containing BG particles, by using a blend of PCL and chitosan. In this work, different BG particle sizes were investigated, namely nanosized and micron-sized. A preliminary investigation about the possible alteration of BG particles in the electrospinning solvents was performed using SEM analysis. The obtained composite fibers were investigated in terms of morphological, chemical and mechanical properties. An in vitro mineralization assay in simulated body fluid (SBF) was performed to investigate the capability of the composite electrospun fibers to induce the formation of hydroxycarbonate apatite (HCA).
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19
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Kossack W, Seidlitz A, Thurn-Albrecht T, Kremer F. Molecular Order in Cold Drawn, Strain-Recrystallized Poly(ε-caprolactone). Macromolecules 2017. [DOI: 10.1021/acs.macromol.6b02714] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Wilhelm Kossack
- Fakultät
für Physik und Geowissenschaften, Universität Leipzig, Linnéstr. 5, 04103 Leipzig, Germany
| | - Anne Seidlitz
- Institut
für Physik, FG Experimentelle Polymerphysik, Martin-Luther-Universität Halle-Wittenberg, 06120 Halle/Saale, Germany
| | - Thomas Thurn-Albrecht
- Institut
für Physik, FG Experimentelle Polymerphysik, Martin-Luther-Universität Halle-Wittenberg, 06120 Halle/Saale, Germany
| | - Friedrich Kremer
- Fakultät
für Physik und Geowissenschaften, Universität Leipzig, Linnéstr. 5, 04103 Leipzig, Germany
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20
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Influence of Alkyl Trimethyl Ammonium Bromides on Hydrothermal Formation of α-CaSO4·0.5H2O Whiskers with High Aspect Ratios. CRYSTALS 2017. [DOI: 10.3390/cryst7010028] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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21
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Khoshroo K, Jafarzadeh Kashi TS, Moztarzadeh F, Tahriri M, Jazayeri HE, Tayebi L. Development of 3D PCL microsphere/TiO2 nanotube composite scaffolds for bone tissue engineering. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2017; 70:586-598. [DOI: 10.1016/j.msec.2016.08.081] [Citation(s) in RCA: 43] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/05/2016] [Revised: 08/12/2016] [Accepted: 08/30/2016] [Indexed: 10/21/2022]
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22
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Hong T, Wang Y, Nai X, Dong Y, Liu X, Li W. Surface modification of anhydrite whiskers and their potential application for durable superhydrophobic coatings. RSC Adv 2017. [DOI: 10.1039/c7ra10908c] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
In this paper a simple method is provided to solve the durability problem of superhydrophobic coatings. Using a traditional approach we give new functions to anhydrite whiskers in the superhydrophobic coating field.
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Affiliation(s)
- Tianzeng Hong
- Key Laboratory of Salt Lake Resources Chemistry
- Qinghai Institute of Salt Lakes
- Chinese Academy of Sciences
- Xining 810008
- China
| | - Yabin Wang
- Key Laboratory of Salt Lake Resources Chemistry
- Qinghai Institute of Salt Lakes
- Chinese Academy of Sciences
- Xining 810008
- China
| | - Xueying Nai
- Key Laboratory of Salt Lake Resources Chemistry
- Qinghai Institute of Salt Lakes
- Chinese Academy of Sciences
- Xining 810008
- China
| | - Yaping Dong
- Key Laboratory of Salt Lake Resources Chemistry
- Qinghai Institute of Salt Lakes
- Chinese Academy of Sciences
- Xining 810008
- China
| | - Xin Liu
- University of Chinese Academy of Sciences
- Beijing 100049
- China
| | - Wu Li
- Key Laboratory of Salt Lake Resources Chemistry
- Qinghai Institute of Salt Lakes
- Chinese Academy of Sciences
- Xining 810008
- China
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23
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Yang HC, Tsai TP. Microwave-Assisted Synthesis and Thermal Resistance of Calcium Sulfate Whiskers. CHEM ENG COMMUN 2016. [DOI: 10.1080/00986445.2016.1260010] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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24
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Study on physicochemical properties of poly(ester-urethane) derived from biodegradable poly(ε-caprolactone) and poly(butylene succinate) as soft segments. Polym Bull (Berl) 2016. [DOI: 10.1007/s00289-016-1833-x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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25
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Achla, Maiti SN, Jacob J. Analytical interpretation of mechanical response of green biocomposites based on poly(ε-caprolactone) and granular tapioca starch. Polym Bull (Berl) 2016. [DOI: 10.1007/s00289-016-1797-x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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26
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Kossack W, Seidlitz A, Thurn-Albrecht T, Kremer F. Interface and Confinement Induced Order and Orientation in Thin Films of Poly(ϵ-caprolactone). Macromolecules 2016. [DOI: 10.1021/acs.macromol.6b00473] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Wilhelm Kossack
- Fakultät
für Physik und Geowissenschaften, Universität Leipzig, Linnéstr. 5, 04103 Leipzig, Germany
| | - Anne Seidlitz
- Institut
für Physik, FG Experimentelle Polymerphysik, Martin-Luther-Universität Halle-Wittenberg, 06120 Halle/Saale, Germany
| | - Thomas Thurn-Albrecht
- Institut
für Physik, FG Experimentelle Polymerphysik, Martin-Luther-Universität Halle-Wittenberg, 06120 Halle/Saale, Germany
| | - Friedrich Kremer
- Fakultät
für Physik und Geowissenschaften, Universität Leipzig, Linnéstr. 5, 04103 Leipzig, Germany
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27
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Aligned poly(ε-caprolactone)/graphene oxide and reduced graphene oxide nanocomposite nanofibers: Morphological, mechanical and structural properties. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2015; 56:325-34. [DOI: 10.1016/j.msec.2015.06.045] [Citation(s) in RCA: 56] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/08/2014] [Revised: 03/28/2015] [Accepted: 06/22/2015] [Indexed: 11/22/2022]
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28
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Zhao W, Gao C, Guo F, Wu Y. Synthesis of calcium sulfate hemihydrate whiskers using oyster shells. RESEARCH ON CHEMICAL INTERMEDIATES 2015. [DOI: 10.1007/s11164-015-2189-9] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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29
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Mao X, Song X, Lu G, Sun Y, Xu Y, Yu J. Control of Crystal Morphology and Size of Calcium Sulfate Whiskers in Aqueous HCl Solutions by Additives: Experimental and Molecular Dynamics Simulation Studies. Ind Eng Chem Res 2015. [DOI: 10.1021/acs.iecr.5b00585] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Xiulong Mao
- National Engineering Research
Center for Integrated Utilization of Salt Lake Resources, East China University of Science and Technology, Shanghai, 200237, China
| | - Xingfu Song
- National Engineering Research
Center for Integrated Utilization of Salt Lake Resources, East China University of Science and Technology, Shanghai, 200237, China
| | - Guimin Lu
- National Engineering Research
Center for Integrated Utilization of Salt Lake Resources, East China University of Science and Technology, Shanghai, 200237, China
| | - Yuzhu Sun
- National Engineering Research
Center for Integrated Utilization of Salt Lake Resources, East China University of Science and Technology, Shanghai, 200237, China
| | - Yanxia Xu
- National Engineering Research
Center for Integrated Utilization of Salt Lake Resources, East China University of Science and Technology, Shanghai, 200237, China
| | - Jianguo Yu
- National Engineering Research
Center for Integrated Utilization of Salt Lake Resources, East China University of Science and Technology, Shanghai, 200237, China
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30
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Feng P, Guo X, Gao C, Gao D, Xiao T, Shuai X, Shuai C, Peng S. Diopside modified porous polyglycolide scaffolds with improved properties. RSC Adv 2015. [DOI: 10.1039/c5ra06312d] [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
In this research, diopside was incorporated into PGA scaffolds for enhancing mechanical and biological properties. The porous scaffolds were fabricated via selective laser sintering.
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Affiliation(s)
- Pei Feng
- State Key Laboratory of High Performance Complex Manufacturing
- Central South University
- Changsha
- China
| | - Xiaoning Guo
- Department of Orthopedics
- The Second Xiangya Hospital
- Central South University
- Changsha
- China
| | - Chengde Gao
- State Key Laboratory of High Performance Complex Manufacturing
- Central South University
- Changsha
- China
| | - Dan Gao
- Hunan Provincial Tumor Hospital and the Affiliated Tumor Hospital of Xiangya School of Medicine
- Central South University
- Changsha
- China
- School of Basic Medical Science
| | - Tao Xiao
- Department of Orthopedics
- The Second Xiangya Hospital
- Central South University
- Changsha
- China
| | - Xiong Shuai
- State Key Laboratory of Powder Metallurgy
- Central South University
- Changsha
- China
| | - Cijun Shuai
- State Key Laboratory of High Performance Complex Manufacturing
- Central South University
- Changsha
- China
- Orthopedic Biomedical Materials Institute
| | - Shuping Peng
- Hunan Provincial Tumor Hospital and the Affiliated Tumor Hospital of Xiangya School of Medicine
- Central South University
- Changsha
- China
- School of Basic Medical Science
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31
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Zhao W, Wu Y, Xu J, Gao C. Retracted Article: Effect of ethylene glycol on hydrothermal formation of calcium sulfate hemihydrate whiskers with high aspect ratios. RSC Adv 2015. [DOI: 10.1039/c5ra07712e] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A facile ethylene glycol-assisted hydrothermal method was developed to synthesis HH whiskers with high aspect ratios.
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Affiliation(s)
- Wenpeng Zhao
- Qingdao University of Science and Technology
- Qingdao 266042
- China
| | - Yumin Wu
- Qingdao University of Science and Technology
- Qingdao 266042
- China
| | - Jun Xu
- Qingdao University of Science and Technology
- Qingdao 266042
- China
| | - Chuanhui Gao
- Qingdao University of Science and Technology
- Qingdao 266042
- China
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32
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Wang Y, Li Y, Yuan A, Yuan B, Lei X, Ma Q, Han J, Wang J, Chen J. Preparation of calcium sulfate whiskers by carbide slag through hydrothermal method. CRYSTAL RESEARCH AND TECHNOLOGY 2014. [DOI: 10.1002/crat.201400155] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Yongqian Wang
- Faculty of Material Science and Chemistry of China; University of Geoscience; Wuhan 430074 China
| | - Yinchang Li
- Faculty of Material Science and Chemistry of China; University of Geoscience; Wuhan 430074 China
| | - Ao Yuan
- Inner Mongolia Lead Sign Gypsum Crafts Co; LTD; Wulanchabu 012000 China
| | - Bo Yuan
- Inner Mongolia Lead Sign Gypsum Crafts Co; LTD; Wulanchabu 012000 China
| | - Xinrong Lei
- Faculty of Material Science and Chemistry of China; University of Geoscience; Wuhan 430074 China
| | - Qun Ma
- Faculty of Material Science and Chemistry of China; University of Geoscience; Wuhan 430074 China
| | - Jun Han
- Faculty of Material Science and Chemistry of China; University of Geoscience; Wuhan 430074 China
| | - Junxia Wang
- Faculty of Material Science and Chemistry of China; University of Geoscience; Wuhan 430074 China
| | - Jieyu Chen
- Faculty of Material Science and Chemistry of China; University of Geoscience; Wuhan 430074 China
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33
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Hou S, Wang J, Wang X, Chen H, Xiang L. Effect of Mg2+ on hydrothermal formation of α-CaSO4·0.5H2O whiskers with high aspect ratios. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2014; 30:9804-10. [PMID: 25089651 DOI: 10.1021/la502451f] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/17/2023]
Abstract
The effect of Mg(2+) on hydrothermal formation of α-CaSO4·0.5H2O whiskers with high aspect ratios was investigated in this paper. α-CaSO4·0.5H2O whiskers with a preferential growth along the c axis and an average aspect ratio up to 370 were synthesized using hydrothermal treatment of CaSO4·2H2O precursor in the presence of 1.97 × 10(-3) mol·L(-1) MgCl2. The preferential adsorption of Mg(2+) on the negative (200), (400), and (020) facets was confirmed by EDS, XPS, and zeta potential measurements. ATR-FTIR analysis revealed the ligand adsorption of Mg(2+) on the surface of α-CaSO4·0.5H2O. The doping of Mg(2+) in α-CaSO4·0.5H2O whiskers was confirmed by the XRD analysis. The experimental results indicated that the adsorption and doping of Mg(2+) promoted the 1-D growth of α-CaSO4·0.5H2O whiskers, leading to the formation of whiskers with high aspect ratios.
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Affiliation(s)
- Sichao Hou
- Department of Chemical Engineering, Tsinghua University , Beijing 100084, China
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34
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Liang JZ, Duan DR, Tang CY, Tsui CP, Chen DZ, Zhang SD. Tensile properties of polycaprolactone/nano-CaCO3 composites. JOURNAL OF POLYMER ENGINEERING 2014. [DOI: 10.1515/polyeng-2013-0208] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
The effects of nanometer calcium carbonate content and tensile rate on the tensile properties of the filled polycaprolactone (PCL) composites were investigated. There was a certain reinforcing effect of the filler on the PCL resin. The tensile modulus increased nonlinearly, and the tensile strength also increased with increase of the filler weight fraction. When the filler weight fraction was kept constant, the tensile modulus and tensile strength increased slightly with increasing tensile rates. By comparing the experimental results with those determined from the tensile yield strength theory, the interfacial adhesion between the filler and matrix was found to be relatively strong; it should be one of the reasons for the good reinforcing effect.
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35
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Kim MJ, Koh YH. Synthesis of aligned porous poly(ε-caprolactone) (PCL)/hydroxyapatite (HA) composite microspheres. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2013; 33:2266-72. [DOI: 10.1016/j.msec.2013.01.051] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/26/2012] [Revised: 12/28/2012] [Accepted: 01/22/2013] [Indexed: 11/16/2022]
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36
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Liang JZ, Zhou L, Tang CY, Tsui CP. Crystallization properties of polycaprolactone composites filled with nanometer calcium carbonate. J Appl Polym Sci 2012. [DOI: 10.1002/app.38359] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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