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Huo X, Wan P, Zhang R, Zhang Z, Lv S. Enhancing the strength and toughness of polylactic acid-based composites through one-step co-deposition of active coating onto wood fiber. Int J Biol Macromol 2024; 274:133414. [PMID: 38925183 DOI: 10.1016/j.ijbiomac.2024.133414] [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: 04/16/2024] [Revised: 06/15/2024] [Accepted: 06/23/2024] [Indexed: 06/28/2024]
Abstract
A facial strategy of co-deposition is proposed to enhance the interfacial bonding in wood fiber (WF)/polylactic acid (PLA) composites. Dopamine or tannic acid (TA) was co-deposited with 3-aminopropyltriethoxysilane (APTES) onto the WF surface to create active coatings. These coatings were formed through Michael addition and Schiff base reactions and effectively attached to the WF through a combination of hydrogen and covalent bonding. Such active coatings facilitated the connection between WF and PLA through both covalent bonds and physical entanglements, thereby enhancing the interfacial interactions and compatibility between the two components. The co-deposition of TA with APTES was found to be more effective than with dopamine, leading to a dramatic improvement in the tensile strength and elongation at break of the composites by 33.4 % and 185.9 %, respectively. This work offers a facile method to prepare high performance plant fiber reinforced PLA composites, thereby broadening the potential applications of PLA.
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Affiliation(s)
- Xingheng Huo
- College of Forestry, Northwest A&F University, Yangling 712100, Shaanxi, China
| | - Pengxing Wan
- College of Forestry, Northwest A&F University, Yangling 712100, Shaanxi, China
| | - Ruojie Zhang
- Food Science Program, University of Missouri, Columbia, MO 65211, USA
| | - Zipei Zhang
- Food Science Program, University of Missouri, Columbia, MO 65211, USA
| | - Shanshan Lv
- College of Forestry, Northwest A&F University, Yangling 712100, Shaanxi, China; International Joint Research Center for Biomass Materials, Southwest Forestry University, Kunming 650224, China.
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Namasivayam SKR, Pandian UK, Samrat K, Arvind Bharani RS, John A, Kavisri M, Kadaikunnan S, Thiruvengadam M, Moovendhan M. Fungal derived herbicidal metabolite loaded starch-chitosan-gum acacia-agar based bio composite: Preparation, characterization, herbicidal activity, release profile and biocompatibility. Int J Biol Macromol 2024; 259:129264. [PMID: 38199548 DOI: 10.1016/j.ijbiomac.2024.129264] [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: 07/28/2023] [Revised: 12/27/2023] [Accepted: 01/03/2024] [Indexed: 01/12/2024]
Abstract
Biocomposites based on starch- gum acacia- agar, chitosan- starch- agar, starch- poly vinyl alcohol- agar were synthesized by simple, green route principles and the various characterization techniques like fourier infrared spectroscopy, SEM revealed the highly stable micro dimenstional that specially interacted with functional groups of polymers -herbicidal metabolites. Respective biocomposite was prepared by mixing equal volume of the selected polymer (1;1;1 ratio) with known concentration (100 mg of in distilled water followed by the addition of reconstituted herbicidal metabolites (100 mg or 0.1 g). Though all the biocomposites were capable of inducing herbicidal effect, notable impact was recorded in chitosan- starch- gum acacia treatment. In this case, the necrotic lesions were initiated at the early incubation period (6 h), progressively developing into dark brownish black lesions with 30.0 mm diameter. Release profile of the metabolites from the respective composite was also under in vitro and soil assay. Release profile study under in vitro and soil condition showed the sustained or controlled manner in distilled water and ethyl acetate treatment. No sign of toxic effect on the soil, parameters plant growth, rhizobacteria and peripheral blood cells clearly revealed the best biocompatibility of the presently proposed biocomposite.
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Affiliation(s)
- S Karthick Raja Namasivayam
- Center for Applied Research, Saveetha School of Engineering, Saveetha Institute of Medical and Technical Sciences (SIMATS), Chennai 602105, Tamil Nadu, India
| | - U Karthika Pandian
- Centre for Bioresource Research and Development, Department of Biotechnology, Sathyabama Institute of Science and Technology, Chennai 600112, Tamil Nadu, India
| | - K Samrat
- Department of Biotechnology, M.S. Ramaiah Institute of Technology, Bangalore 560054, Karnataka, India
| | - R S Arvind Bharani
- Institute of Obstetrics and Gynaecology, Madras Medical College, Egmore, Chennai-600008, Tamil Nadu, India
| | - Arun John
- Department of Molecular Analytics, Saveetha school of engineering, Saveetha Institute of Medical and Technical Sciences (SIMATS), Chennai 602105, Tamil Nadu, India
| | - M Kavisri
- Department of Infrastructure Engineering, Saveetha School of Engineering, Saveetha Institute of Medical and Technical Sciences (SIMATS), Chennai 602195, Tamil Nadu, India
| | - Shine Kadaikunnan
- Department of Botany and Microbiology, College of Science, King Saud University, P. O. Box 2455, Riyadh 11451, Saudi Arabia
| | - Muthu Thiruvengadam
- Department of Crop Science, College of Sanghuh Life Sciences, Konkuk University, Seoul 05029, South Korea
| | - Meivelu Moovendhan
- Centre for Ocean Research, Sathyabama Research Park, Sathyabama Institute of Science and Technology, Chennai 600119, Tamil Nadu, India..
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Shahdan D, Rosli NA, Chen RS, Ahmad S, Gan S. Strategies for strengthening toughened poly(lactic acid) blend via natural reinforcement with enhanced biodegradability: A review. Int J Biol Macromol 2023; 251:126214. [PMID: 37572810 DOI: 10.1016/j.ijbiomac.2023.126214] [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: 03/14/2023] [Revised: 07/06/2023] [Accepted: 08/05/2023] [Indexed: 08/14/2023]
Abstract
The growing popularity of poly(lactic acid) (PLA) can be attributed to its favorable attributes, such as excellent compostability and robust mechanical properties. Two notable limitations of PLA are its high brittleness and slow biodegradation rate. Both of blending and copolymerization strategies work well to improve PLA's toughness while sacrificing the good tensile strength and modulus properties of PLA. One of the most effective and economical approaches to address this challenge is to incorporate natural reinforcing agents into the toughened PLA system, thereby simultaneously promoting the biodegradation rate of PLA. Nevertheless, the enhancement of tensile strength and modulus is accompanied by a notable decrease in elongation. Therefore, this review provides comprehensive information on the literature works related to the tensile strength, modulus, elongation at break and impact strength of the toughened PLA and its natural fiber reinforced composites. The impact of natural reinforcing agent on the tensile fracture mechanism as well as the synergistic effect on strengthening and toughening performance will be discussed. This review also focuses on the factors boosting the biodegradability of toughened PLA blend by using natural reinforcing fiber. Review presents potential future insights into the development of biodegradable and balanced strengthened-toughened PLA based advanced materials.
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Affiliation(s)
- Dalila Shahdan
- Department of Applied Physics, Faculty of Science and Technology, Universiti Kebangsaan Malaysia (UKM), 43600 Bangi, Selangor, Malaysia
| | - Noor Afizah Rosli
- Department of Chemical Sciences, Faculty of Science and Technology, Universiti Kebangsaan Malaysia, 43600 Bangi, Selangor, Malaysia..
| | - Ruey Shan Chen
- Department of Applied Physics, Faculty of Science and Technology, Universiti Kebangsaan Malaysia (UKM), 43600 Bangi, Selangor, Malaysia.
| | - Sahrim Ahmad
- Department of Applied Physics, Faculty of Science and Technology, Universiti Kebangsaan Malaysia (UKM), 43600 Bangi, Selangor, Malaysia
| | - Sinyee Gan
- Malaysian Palm Oil Board, 6 Persiaran Institusi, Bandar Baru Bangi, 43000 Kajang, Selangor, Malaysia
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Sienkiewicz A, Czub P. A Method of Managing Waste Oak Flour as a Biocomponent for Obtaining Composites Based on Modified Soybean Oil. MATERIALS (BASEL, SWITZERLAND) 2022; 15:ma15217737. [PMID: 36363330 PMCID: PMC9656467 DOI: 10.3390/ma15217737] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/11/2022] [Revised: 10/26/2022] [Accepted: 10/28/2022] [Indexed: 05/14/2023]
Abstract
The aim of the present research was the development of a management method for wood-processing waste that was obtained during the production of parquet flooring. Currently mostly useless, such waste mainly ends up in landfills. The oak waste flour was used as a reinforcement material for epoxy biocomposites based on the polyaddition product of epoxidized soybean oil and bisphenol-A (ESBO_BPA). The biofiller was subjected to mercerization, acetylation, and diisocyanate modification to increase the typically poor compatibility between the highly hydrophilic wood fibers and the hydrophobic polymer matrix. Among the analyzed epoxy biocomposites, which contained about 60% raw materials of natural origin, it was found that the best mechanical properties were recorded for cured samples of the ESBO_BPA composition filled with 5 wt % of oak flour mercerized using a 5% solution of NaOH. It was also proven that a higher concentration of alkali deteriorated the mechanical-strengthening properties of the wood filler. The acetylation of the biofiller independently in the best elimination of hydroxyl groups from its structure also removed irregular strips and smoothed its surface. This resulted in a poorer wettability of the oak flour surface by the polymer and consequently an easier pullout of the filler from the polymer matrix and worse mechanical properties of the wood/epoxy composite. To the best of the authors' knowledge, the present research was the first to examine the possibility of the application of parquet flooring post-production wood flour in biomaterials based on a polyaddition product of epoxidized soybean oil and bisphenol-A.
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Singh T, Patnaik A, Ranakoti L, Dogossy G, Lendvai L. Thermal and Sliding Wear Properties of Wood Waste-Filled Poly(Lactic Acid) Biocomposites. Polymers (Basel) 2022; 14:polym14112230. [PMID: 35683903 PMCID: PMC9183038 DOI: 10.3390/polym14112230] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2022] [Revised: 05/25/2022] [Accepted: 05/27/2022] [Indexed: 02/01/2023] Open
Abstract
In our study, the effects of wood waste content (0, 2.5, 5, 7.5, and 10 wt.%) on thermal and dry sliding wear properties of poly(lactic acid) (PLA) biocomposites were investigated. The wear of developed composites was examined under dry contact conditions at different operating parameters, such as sliding velocity (1 m/s, 2 m/s, and 3 m/s) and normal load (10 N, 20 N, and 30 N) at a fixed sliding distance of 2000 m. Thermogravimetric analysis demonstrated that the inclusion of wood waste decreased the thermal stability of PLA biocomposites. The experimental results indicate that wear of biocomposites increased with a rise in load and sliding velocity. There was a 26-38% reduction in wear compared with pure PLA when 2.5 wt.% wood waste was added to composites. The Taguchi method with L25 orthogonal array was used to analyze the sliding wear behavior of the developed biocomposites. The results indicate that the wood waste content with 46.82% contribution emerged as the most crucial parameter affecting the wear of PLA biocomposites. The worn surfaces of the biocomposites were examined by scanning electron microscopy to study possible wear mechanisms and correlate them with the obtained wear results.
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Affiliation(s)
- Tej Singh
- Savaria Institute of Technology, Faculty of Informatics, ELTE Eötvös Loránd University, 9700 Szombathely, Hungary;
| | - Amar Patnaik
- Department of Mechanical Engineering, Malaviya National Institute of Technology, Jaipur 302017, Rajasthan, India;
| | - Lalit Ranakoti
- Mechanical Engineering Department, Graphic Era (Deemed to be University), Dehradun 248002, Uttarakhand, India;
| | - Gábor Dogossy
- Department of Materials Science and Engineering, Széchenyi István University, 9026 Győr, Hungary;
| | - László Lendvai
- Department of Materials Science and Engineering, Széchenyi István University, 9026 Győr, Hungary;
- Correspondence:
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