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Hu J, Tian X, Sun J, Yuan J, Yuan Y. Chitin nanocrystals reticulated self‐assembled architecture reinforces deproteinized natural rubber latex film. J Appl Polym Sci 2020. [DOI: 10.1002/app.49173] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Affiliation(s)
- Jiarui Hu
- Shanghai Key Laboratory of Advanced Polymeric MaterialsSchool of Materials Science and Engineering, East China University of Science and Technology Shanghai P R China
| | - Xiaohui Tian
- Shanghai Key Laboratory of Advanced Polymeric MaterialsSchool of Materials Science and Engineering, East China University of Science and Technology Shanghai P R China
| | - Jinyu Sun
- Shanghai Key Laboratory of Advanced Polymeric MaterialsSchool of Materials Science and Engineering, East China University of Science and Technology Shanghai P R China
| | - Jianyong Yuan
- Shanghai Key Laboratory of Advanced Polymeric MaterialsSchool of Materials Science and Engineering, East China University of Science and Technology Shanghai P R China
| | - Yizhong Yuan
- Shanghai Key Laboratory of Advanced Polymeric MaterialsSchool of Materials Science and Engineering, East China University of Science and Technology Shanghai P R China
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Kumagai A, Tajima N, Iwamoto S, Morimoto T, Nagatani A, Okazaki T, Endo T. Properties of natural rubber reinforced with cellulose nanofibers based on fiber diameter distribution as estimated by differential centrifugal sedimentation. Int J Biol Macromol 2018; 121:989-995. [PMID: 30342153 DOI: 10.1016/j.ijbiomac.2018.10.090] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2018] [Revised: 10/01/2018] [Accepted: 10/14/2018] [Indexed: 01/15/2023]
Abstract
Cellulose nanofibers (CNFs) with different degrees of fibrillation are prepared by the mechanical fibrillation of kraft pulp using wet disk milling, and dispersions of the prepared CNFs were subjected to differential centrifugal sedimentation (DCS) in order to estimate the diameter distributions of the CNFs. The low-fibrillated CNFs (fiber diameter (d): >10 μm) had a weak reinforcing effect on natural rubber (NR), while the medium-fibrillated CNFs (d: 0.1-10 μm) dramatically improve the initial modulus and decrease the elongation at break. The high-fibrillated CNFs (d: <0.1 μm) enhanced the tensile strength even further while maintaining the elongation at break. The reinforcing mechanism of the NR composites reinforced by the CNFs (NR-CNFs) was confirmed by field-emission scanning electron microscopy imaging, dynamic mechanical analysis, and toluene uptake measurements. It was concluded that these characteristic mechanical properties of the NR-CNFs were determined by the morphologies of the CNFs. The branching structure of the medium-fibrillated CNFs affected high improvement of the initial modulus, and the network formed by the high-fibrillated CNFs were involved in enhancement of the tensile strength without compromising viscoelastic properties. Understanding the effect of their diameter distribution can potentially reduce the production cost of CNFs and thus expand their applicability.
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Affiliation(s)
- Akio Kumagai
- Research Institute for Sustainable Chemistry, Department of Materials and Chemistry, National Institute of Advanced Industrial Science and Technology (AIST), 3-11-32 Kagamiyama, Higashi-Hiroshima, Hiroshima 737-0046, Japan.
| | - Naoko Tajima
- CNT-Application Research Center, National Institute of Advanced Industrial Science and Technology (AIST), 1-1-1 Higashi, Tsukuba, Ibaraki, 305-8565, Japan.
| | - Shinichiro Iwamoto
- Research Institute for Sustainable Chemistry, Department of Materials and Chemistry, National Institute of Advanced Industrial Science and Technology (AIST), 3-11-32 Kagamiyama, Higashi-Hiroshima, Hiroshima 737-0046, Japan.
| | - Takahiro Morimoto
- CNT-Application Research Center, National Institute of Advanced Industrial Science and Technology (AIST), 1-1-1 Higashi, Tsukuba, Ibaraki, 305-8565, Japan.
| | - Asahiro Nagatani
- Hyogo Prefectural Institute of Technology, 3-1-12 Yukihira-cho, Suma-ku, Kobe, Hyogo 654-0037, Japan.
| | - Toshiya Okazaki
- CNT-Application Research Center, National Institute of Advanced Industrial Science and Technology (AIST), 1-1-1 Higashi, Tsukuba, Ibaraki, 305-8565, Japan.
| | - Takashi Endo
- Research Institute for Sustainable Chemistry, Department of Materials and Chemistry, National Institute of Advanced Industrial Science and Technology (AIST), 3-11-32 Kagamiyama, Higashi-Hiroshima, Hiroshima 737-0046, Japan.
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Morreale M, Liga A, Mistretta MC, Ascione L, Mantia FPL. Mechanical, Thermomechanical and Reprocessing Behavior of Green Composites from Biodegradable Polymer and Wood Flour. MATERIALS 2015; 8:7536-7548. [PMID: 28793656 PMCID: PMC5458878 DOI: 10.3390/ma8115406] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/30/2015] [Revised: 10/30/2015] [Accepted: 11/02/2015] [Indexed: 11/23/2022]
Abstract
The rising concerns in terms of environmental protection and the search for more versatile polymer-based materials have led to an increasing interest in the use of polymer composites filled with natural organic fillers (biodegradable and/or coming from renewable resources) as a replacement for traditional mineral inorganic fillers. At the same time, the recycling of polymers is still of fundamental importance in order to optimize the utilization of available resources, reducing the environmental impact related to the life cycle of polymer-based items. Green composites from biopolymer matrix and wood flour were prepared and the investigation focused on several issues, such as the effect of reprocessing on the matrix properties, wood flour loading effects on virgin and reprocessed biopolymer, and wood flour effects on material reprocessability. Tensile, Dynamic-mechanical thermal (DMTA), differential scanning calorimetry (DSC) and creep tests were performed, pointing out that wood flour leads to an improvement of rigidity and creep resistance in comparison to the pristine polymer, without compromising other properties such as the tensile strength. The biopolymer also showed a good resistance to multiple reprocessing; the latter even allowed for improving some properties of the obtained green composites.
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Affiliation(s)
- Marco Morreale
- Facoltà di Ingegneria e Architettura, Università degli studi di Enna "Kore", Cittadella Universitaria, Enna 94100, Italy.
| | - Antonio Liga
- Institute of Biological Chemistry, Biophysics and Bioengineering, Heriot-Watt University, Edinburgh EH14 4AS, UK.
| | - Maria Chiara Mistretta
- Dipartimento di Ingegneria Civile, Ambientale, Aerospaziale, dei Materiali, Università di Palermo, Viale delle Scienze, Palermo 90128, Italy.
| | - Laura Ascione
- Dipartimento di Ingegneria Civile, Ambientale, Aerospaziale, dei Materiali, Università di Palermo, Viale delle Scienze, Palermo 90128, Italy.
| | - Francesco Paolo La Mantia
- Dipartimento di Ingegneria Civile, Ambientale, Aerospaziale, dei Materiali, Università di Palermo, Viale delle Scienze, Palermo 90128, Italy.
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Thakore S. Nanosized cellulose derivatives as green reinforcing agents at higher loadings in natural rubber. J Appl Polym Sci 2014. [DOI: 10.1002/app.40632] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Sonal Thakore
- Department of Chemistry, Faculty of Science; Maharaja Sayajirao University of Baroda; Vadodara 390 002 India
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Effect of nanocrystalline cellulose on the curing characteristics and aging resistance properties of carbon black reinforced natural rubber. CHINESE JOURNAL OF POLYMER SCIENCE 2013. [DOI: 10.1007/s10118-013-1340-6] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Trovatti E, Carvalho AJF, Ribeiro SJL, Gandini A. Simple Green Approach to Reinforce Natural Rubber with Bacterial Cellulose Nanofibers. Biomacromolecules 2013; 14:2667-74. [DOI: 10.1021/bm400523h] [Citation(s) in RCA: 57] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Eliane Trovatti
- Instituto
de Química
de São Carlos, Universidade de São Paulo, PB 780, 13560-970, São Carlos, SP, Brazil
- Departamento de Engenharia de
Materiais/Escola de Engenharia de São Carlos, Universidade de São Paulo, 13566-590, São
Carlos, SP, Brazil
| | - Antonio J. F. Carvalho
- Departamento de Engenharia de
Materiais/Escola de Engenharia de São Carlos, Universidade de São Paulo, 13566-590, São
Carlos, SP, Brazil
| | - Sidney J. L. Ribeiro
- Instituto
de Química, Universidade Estadual Paulista Júlio de Mesquita Filho, UNESP, 14801-970, Araraquara, SP,
Brazil
| | - Alessandro Gandini
- Instituto
de Química
de São Carlos, Universidade de São Paulo, PB 780, 13560-970, São Carlos, SP, Brazil
- Departamento de Engenharia de
Materiais/Escola de Engenharia de São Carlos, Universidade de São Paulo, 13566-590, São
Carlos, SP, Brazil
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