51
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Zhang X, Ding W, Chang E, Chen X, Chen J, Park CB, Shen C. Foaming Behaviors and Mechanical Properties of Injection-Molded Polylactide/Cotton-Fiber Composites. Ind Eng Chem Res 2020. [DOI: 10.1021/acs.iecr.0c03348] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Xiaoli Zhang
- School of Materials Science and Engineering, Zhengzhou University, Zhengzhou 450001, China
- Microcellular Plastics Manufacturing Laboratory, Department of Mechanical and Industrial Engineering, University of Toronto, Toronto, Ontario M5S 3G8, Canada
| | - Weidan Ding
- Microcellular Plastics Manufacturing Laboratory, Department of Mechanical and Industrial Engineering, University of Toronto, Toronto, Ontario M5S 3G8, Canada
| | - Eunse Chang
- Microcellular Plastics Manufacturing Laboratory, Department of Mechanical and Industrial Engineering, University of Toronto, Toronto, Ontario M5S 3G8, Canada
| | - Xuefeng Chen
- China National Pulp and Paper Research Institute, Beijing 100102, China
| | - Jingbo Chen
- School of Materials Science and Engineering, Zhengzhou University, Zhengzhou 450001, China
| | - Chul B. Park
- Microcellular Plastics Manufacturing Laboratory, Department of Mechanical and Industrial Engineering, University of Toronto, Toronto, Ontario M5S 3G8, Canada
| | - Changyu Shen
- School of Materials Science and Engineering, Zhengzhou University, Zhengzhou 450001, China
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52
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Akindoyo JO, Beg MDH, Ghazali S, Heim HP, Feldmann M, Mariatti M. Simultaneous impact modified and chain extended glass fiber reinforced poly(lactic acid) composites: Mechanical, thermal, crystallization, and dynamic mechanical performance. J Appl Polym Sci 2020. [DOI: 10.1002/app.49752] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- John Olabode Akindoyo
- School of Materials and Mineral Resources Engineering Universiti Sains Malaysia Seberang Perai Malaysia
- Institute of Materials Engineering University of Kassel Kassel Germany
| | | | - Suriati Ghazali
- Faculty of Chemical and Natural Resources Engineering Universiti Malaysia Pahang Kuantan Malaysia
| | - Hans Peter Heim
- Institute of Materials Engineering University of Kassel Kassel Germany
| | - Maik Feldmann
- Institute of Materials Engineering University of Kassel Kassel Germany
| | - Mustapha Mariatti
- School of Materials and Mineral Resources Engineering Universiti Sains Malaysia Seberang Perai Malaysia
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53
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Andrzejewski J, Szostak M. Preparation of hybrid poly(lactic acid)/flax composites by the insert overmolding process: Evaluation of mechanical performance and thermomechanical properties. J Appl Polym Sci 2020. [DOI: 10.1002/app.49646] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Jacek Andrzejewski
- Faculty of Mechanical Engineering, Institute of Materials Technology Poznan University of Technology Poznan Poland
| | - Marek Szostak
- Faculty of Mechanical Engineering, Institute of Materials Technology Poznan University of Technology Poznan Poland
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54
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Tarrés Q, Ardanuy M. Evolution of Interfacial Shear Strength and Mean Intrinsic Single Strength in Biobased Composites from Bio-Polyethylene and Thermo-Mechanical Pulp-Corn Stover Fibers. Polymers (Basel) 2020; 12:E1308. [PMID: 32521809 PMCID: PMC7362255 DOI: 10.3390/polym12061308] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2020] [Revised: 06/06/2020] [Accepted: 06/06/2020] [Indexed: 11/16/2022] Open
Abstract
In this article, with the aim of promoting sustainability, contributing to the circular economy and the fight against climate change, the production of composite materials from Bio-polyethylene reinforced with corn stover fibers has been studied. The behavior of the materials obtained has been studied experimentally and by mathematical models of micromechanics. The composite materials were produced by extrusion and then injection with from 10 to 50 wt.% of fibers. The creation of a good fiber-matrix interface was studied by the incorporation of coupling agent between (0-8 wt.%). Increase of 131.2% on tensile strength for 40wt.% reinforcement was achieved by adding 6 wt.% of coupling agent. The correct interface was demonstrated by a correlation of 0.99 between the experimental results and the results of the mathematical models used.
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Affiliation(s)
- Quim Tarrés
- Departament de Ciència I Enginyeria de Materials, Universitat Politècnica de Catalunya (UPC), Colom 1, 08222 Terrassa, Spain;
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55
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Xu JK, Zhang L, Li DL, Bao JB, Wang ZB. Foaming of Poly(3-hydroxybutyrate- co-3-hydroxyvalerate) with Supercritical Carbon Dioxide: Foaming Performance and Crystallization Behavior. ACS OMEGA 2020; 5:9839-9845. [PMID: 32391471 PMCID: PMC7203685 DOI: 10.1021/acsomega.9b04501] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/31/2019] [Accepted: 04/13/2020] [Indexed: 05/12/2023]
Abstract
Poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV) samples were successfully foamed using supercritical carbon dioxide as a physical foaming agent. PHBV sheets were first saturated at 175 °C followed by a foaming process at different temperatures (145 to 165 °C) and different CO2 pressures (10 to 29 MPa). It was found that microcellular structures with average cell sizes ranging from 6 to 22 μm and cell densities ranging from 108 to 1.2 × 109 cells/cm3 could be controllably prepared by selecting suitable foaming conditions. To investigate crystallization behavior during the foaming process and explore the corresponding foaming mechanism, differential scanning calorimetry, wide angle X-ray diffraction, and small-angle X-ray scattering characterizations were carried out. Stretching behavior during the cell growth stage may increase the crystal nucleation rate, and the generated crystal nucleus accelerates the crystallization rate as well as thickens PHBV crystal lamellae.
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Affiliation(s)
- Jin-Ke Xu
- Ningbo Key Laboratory of
Specialty Polymers, Faculty of Materials Science and Chemical Engineering, Ningbo University, Ningbo 315211, China
| | - Li Zhang
- Ningbo Key Laboratory of
Specialty Polymers, Faculty of Materials Science and Chemical Engineering, Ningbo University, Ningbo 315211, China
| | - De-Long Li
- Ningbo Key Laboratory of
Specialty Polymers, Faculty of Materials Science and Chemical Engineering, Ningbo University, Ningbo 315211, China
| | - Jin-Biao Bao
- Ningbo Key Laboratory of
Specialty Polymers, Faculty of Materials Science and Chemical Engineering, Ningbo University, Ningbo 315211, China
| | - Zong-Bao Wang
- Ningbo Key Laboratory of
Specialty Polymers, Faculty of Materials Science and Chemical Engineering, Ningbo University, Ningbo 315211, China
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56
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Liu W, Zhu X, Gao H, Su X, Wu X. Preparation and characterization of PLA foam chain extended through grafting octa(epoxycyclohexyl) POSS onto carbon nanotubes. CELLULAR POLYMERS 2020. [DOI: 10.1177/0262489320912521] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Improving foamability of poly (lactic acid) (PLA) resin is a key issue for its critical foaming applications with high-performance and ultralow density. However, owing to the rheological nature of linear PLA chain structure with relatively low molecular weight, the overall foamability of PLA resin cannot meet the processing requirements of foaming purpose. Here, we describe a simple and versatile technique to prepare high foamability PLA resin by inducing chain extender through grafting octa(epoxycyclohexyl) polyhedral oligomeric silsesquioxanes (POSS) on carbon nanotubes (CNT). After the orderly assemble of the two nanoparticles, an obvious increase in melt elasticity of PLA is observed. The enhanced melt elasticity of PLA had a significant effect on controlling subsequent foaming behavior. Thus, a homogeneous and finer cellular morphology of PLA rigid foam was obtained with a proper content of CNT-POSS. Eventually, the expansion ratio of chain-extended PLA foam was 13 times higher than that of unmodified PLA foam. The proposed design methodology will potentially pave a way for designing and preparing high-performance PLA rigid foam products.
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Affiliation(s)
- Wei Liu
- School of Materials and Metallurgical Engineering, Guizhou Institute of Technology, Guiyang City, Guizhou Province, People’s Republic of China
| | - Xunxian Zhu
- School of Materials and Metallurgical Engineering, Guizhou Institute of Technology, Guiyang City, Guizhou Province, People’s Republic of China
| | - Hongxiang Gao
- School of Materials and Metallurgical Engineering, Guizhou Institute of Technology, Guiyang City, Guizhou Province, People’s Republic of China
| | - Xiangdong Su
- Key Laboratory of Light Metal Materials Processing Technology of Guizhou Province, Guizhou Institute of Technology, Guiyang, Guizhou, People’s Republic of China
| | - Xian Wu
- School of Materials and Metallurgical Engineering, Guizhou Institute of Technology, Guiyang City, Guizhou Province, People’s Republic of China
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57
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Behera K, Chang YH, Yadav M, Chiu FC. Enhanced thermal stability, toughness, and electrical conductivity of carbon nanotube-reinforced biodegradable poly(lactic acid)/poly(ethylene oxide) blend-based nanocomposites. POLYMER 2020. [DOI: 10.1016/j.polymer.2019.122002] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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