Critical Review on Polylactic Acid: Properties, Structure, Processing, Biocomposites, and Nanocomposites

Materials, Год журнала: 2022, Номер 15(12), С. 4312 - 4312

Опубликована: Июнь 17, 2022

Composite materials are emerging as a vital entity for the sustainable development of both humans and environment. Polylactic acid (PLA) has been recognized potential polymer candidate with attractive characteristics applications in engineering medical sectors. Hence, present article throws lights on essential physical mechanical properties PLA that can be beneficial composites, biocomposites, films, porous gels, so on. The discusses various processes utilized fabrication PLA-based composites. In later section, we have detailed discourse composites nanocomposites-based along properties’ comparisons, discussing our investigation effects fibers, fillers, nanofillers mechanical, thermal, wear PLA. Lastly, which is used extensively discussed detail.

Язык: Английский

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Dynamic mechanical properties of natural fiber reinforced hybrid polymer composites: a review

Journal of Materials Research and Technology, Год журнала: 2022, Номер 19, С. 167 - 182

Опубликована: Май 12, 2022

The concerning waste management issue of natural fibers and the downsides synthetic have governed fibers' utilization as reinforcements in composites. Incorporating a single type reinforcing fiber does not inevitably produce composites that meet exceptional quality standards, particularly dynamic mechanical properties. Various studies demonstrated excellent properties reinforced hybrid Accordingly, this paper aims to review research related emphasize A summary for each composites, including thermoset thermoplastic polymers, biopolymers, nanocomposites, bionanocomposites was provided. variables relevance overview are loss modulus, storage damping factor, glass transition temperature. Overall, reviewed works revealed lignocellulosic extensively used reinforce Nearly all hybridization multiple had synergistic influences on composites' However, there several cases whereby addition particles leads detrimental effect composites’ quality. There is limitless possibility further improvements

Язык: Английский

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Recent progressions in biomedical and pharmaceutical applications of chitosan nanoparticles: A comprehensive review

International Journal of Biological Macromolecules, Год журнала: 2023, Номер 231, С. 123354 - 123354

Опубликована: Янв. 18, 2023

Язык: Английский

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Dry sliding wear characteristics of natural fibre reinforced poly-lactic acid composites for engineering applications: Fabrication, properties and characterizations

Journal of Materials Research and Technology, Год журнала: 2023, Номер 23, С. 1189 - 1203

Опубликована: Янв. 5, 2023

Natural fibre composites have emerged as a viable alternative to conventional polymer composites, after environmental concerns gain popularity. In recent years, tremendous growth in the applications of natural been observed, particularly field construction, well aerospace and automotive industries. The present study investigates feasibility developing novel tribo-material by reinforcing biopolymer with easily accessible inexpensive plant fibres from surroundings. were treated chemically prior fabrication. injection molding process was used fabricate laminated incorporating three different kinds (sisal, banana, bagasse) into Poly-lactic acid (PLA) matrix at 10% 20% concentrations. Wear properties fabricated studied on digital display controlled pin-on-disc test rig. parameters under dry sliding conditions distance (1000–3000 m), speed (2,4 6 m/s) applied load (10 N). experimental results depict that incorporation improved tribological neat PLA matrix. worn surfaces developed examined using scanning electron microscope wear mechanism.

Язык: Английский

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Chitosan and chitosan derivatives: Recent advancements in production and applications in environmental remediation

Environmental Advances, Год журнала: 2023, Номер 11, С. 100351 - 100351

Опубликована: Фев. 6, 2023

This review, which presents recent advancements in production and applications environmental remediation of chitosan derivatives, covers relevant literature the last 7–8 years, is nearly half-term 15-year period where global agenda focuses on achieving United Nations Sustainable Development Goals (SDGs) by 2030. Chitosan a natural, non-toxic, polycationic polymer synthesized deacetylating chitin, using several methods for producing its derivatives. The nature derivatives offers them huge prospects as adsorbents due to their extraordinary diverse properties biocompatibility, biodegradability, non-hazardousness chemical versatility. As such, they are very useful remediation. have stood test time. They effectively remove fine suspended particles heavy metals from polluted water wastewater. Also, marine environment usually heavily hydrocarbons through oil spills with an effectual removal these adsorbents. Soil, water, air techniques propensity generate secondary pollution modifying structures, significantly impact environment, ecosystem integrity, health. Hence, need less costly, efficacious, environmentally benign methods, such warranted. current review first identifies sources knowledge gaps, rare exposition issues order two stages traditional industrial process. It overview then examines chemistry. transformation also highlighted. Finally, research gaps future dimensions clear about process promote sustainable utilization world has embraced paradigm shift toward circular green economies, particularly during SDGs.

Язык: Английский

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Chitosan-Biopolymer-Entrapped Activated Charcoal for Adsorption of Reactive Orange Dye from Aqueous Phase and CO2 from Gaseous Phase

Journal of Composites Science, Год журнала: 2023, Номер 7(3), С. 103 - 103

Опубликована: Март 7, 2023

Polymers have been proven to be an interesting class of adsorbents applied in water treatment. Biopolymers are special interest due their unique properties such as biocompatibility, biodegradability, and reusability. This work reports a composite formed by chitosan biopolymer activated charcoal using sodium citrate crosslinking agent. The chitosan–citrate-activated (CCA) was characterized FT–IR, SEM, EDAX, XRD, TGA–DTA BET surface area analysis. material found microporous nature with 165.83 m2/g that led high adsorption capacities toward both the targeted pollutants. In aqueous phase, dye studies were carried out reactive orange 16 (R-16) dye, while gaseous CO2 capacity evaluated. Under optimum solution conditions, maximum R-16 removal 34.62 mg g−1, gas phase 13.15 cm3g−1. Intrinsic microporosity CCA resulted enhanced capture for carbon dioxide respective phases. Material sustainability evaluate various parameters.

Язык: Английский

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Machine intelligence-accelerated discovery of all-natural plastic substitutes

Nature Nanotechnology, Год журнала: 2024, Номер 19(6), С. 782 - 791

Опубликована: Март 18, 2024

Abstract One possible solution against the accumulation of petrochemical plastics in natural environments is to develop biodegradable plastic substitutes using components. However, discovering all-natural alternatives that meet specific properties, such as optical transparency, fire retardancy and mechanical resilience, which have made successful, remains challenging. Current approaches still rely on iterative optimization experiments. Here we show an integrated workflow combines robotics machine learning accelerate discovery with programmable optical, thermal properties. First, automated pipetting robot commanded prepare 286 nanocomposite films various properties train a support-vector classifier. Next, through 14 active loops data augmentation, 135 nanocomposites are fabricated stagewise, establishing artificial neural network prediction model. We demonstrate model can conduct two-way design task: (1) predicting physicochemical from its composition (2) automating inverse fulfils user-specific requirements. By harnessing model’s capabilities, several substitutes, could replace non-biodegradable counterparts exhibiting analogous Our methodology integrates robot-assisted experiments, intelligence simulation tools eco-friendly starting building blocks taken generally-recognized-as-safe database.

Язык: Английский

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Polyphenol assisted nano-reinforced chitosan films with antioxidant and antimicrobial properties

Food Hydrocolloids, Год журнала: 2024, Номер 153, С. 110010 - 110010

Опубликована: Март 19, 2024

Язык: Английский

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Advances in chitosan-based blends as potential drug delivery systems: A review

International Journal of Biological Macromolecules, Год журнала: 2024, Номер 273, С. 132916 - 132916

Опубликована: Июнь 5, 2024

Язык: Английский

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Study on synthesis and water stability of geopolymer pavement base material using waste sludge

Journal of Cleaner Production, Год журнала: 2024, Номер 445, С. 141331 - 141331

Опубликована: Фев. 19, 2024

Язык: Английский

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