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61,005 resultsShowing papers similar to Aging Process of Biocomposites with the PLA Matrix Modified with Different Types of Cellulose
ClearAging of PLA/NR electrospun fibers under the influence of UV-irradiation, water and soil environment
Researchers tested how UV light, water, and soil exposure age and degrade biodegradable polylactic acid (PLA) and natural rubber (NR) composite fibers. Higher natural rubber content accelerated degradation, important information for designing biodegradable plastic products that break down as intended without generating persistent microplastics.
Environmental Degradation of Plastic Composites with Natural Fillers—A Review
Researchers examined the environmental degradation of polymer composites containing natural fillers, finding that exposure to outdoor conditions accelerates biodegradation of natural components and alters the mechanical properties of the composite material. The degradation process can generate microplastic fragments as the matrix breaks down.
Mechanical properties of fibre/ filler based poly(Lactic Acid) (Pla) composites : A brief review
This review examines the mechanical properties of polylactic acid (PLA)-based composites reinforced with natural fibers and fillers, presenting PLA as a biodegradable alternative to conventional plastics in applications ranging from agriculture to biomedical devices. Improving the strength and durability of bio-based plastics is essential for replacing petroleum-based materials that generate persistent microplastic pollution.
Comparing the Aging Processes of PLA and PE: The Impact of UV Irradiation and Water
Scientists compared how biodegradable PLA plastic and conventional polyethylene break down under UV light and water exposure. PLA degraded more severely, fragmenting into smaller particles more readily than polyethylene, though both types developed surface cracks and chemical changes. Understanding how different plastics age is important because smaller, more degraded particles may be more easily absorbed by living organisms and potentially cause greater harm.
Degradation of Biodegradable Microplastics under Artificially Controlled Aging Conditions with UV Radiation
Researchers subjected biodegradable plastics to controlled UV aging and found that they fragmented into microplastics faster than conventional plastics under simulated outdoor conditions. Biodegradable plastics are promoted as an eco-friendly alternative, but this study shows they may actually create microplastic pollution more rapidly in real-world environments. The findings raise important questions about whether biodegradable plastics are a genuine solution to plastic pollution.
Changes in the Thermal and Structural Properties of Polylactide and Its Composites During a Long-Term Degradation Process
Researchers studied the long-term degradation of polylactide (PLA) composites to understand how their thermal and structural properties change over time. The findings indicate that as PLA breaks down during composting, there is potential for microplastic formation, and the rate of decomposition varies depending on the composite composition.
Adsorption/desorption behavior of degradable polylactic acid microplastics on bisphenol A under different aging conditions
Researchers studied how different types of UV-simulated aging affect the ability of polylactic acid microplastics to adsorb and release bisphenol A. The study found that aging conditions changed the surface properties of the biodegradable plastic, altering its interaction with this common environmental contaminant. The findings suggest that even biodegradable microplastics can act as carriers of harmful chemicals depending on their degradation state.
The aging behavior of degradable plastic polylactic acid under the interaction of environmental factors
Researchers used response surface methodology to study how temperature, light, and humidity interact to accelerate the aging and breakdown of polylactic acid, a common biodegradable plastic. The study found that humidity had the greatest effect on PLA degradation, followed by light and temperature. Evidence indicates that even biodegradable plastics can release microplastic particles as they age under environmental conditions, posing potential ecological concerns.
Enzymatic Degradation and Pilot-Scale Composting of Cellulose-Based Films with Different Chemical Structures
Researchers investigated the enzymatic degradability and pilot-scale composting of 14 cellulose-based materials including regenerated cellulose, cellulose acetate, methyl cellulose, and cellophane, finding that hydrolysis rate decreased exponentially as the degree of chemical substitution increased. The study establishes structure-biodegradability relationships to guide development of cellulose-based plastic alternatives that balance mechanical strength with natural biodegradability.
Aging behavior of biodegradable polylactic acid microplastics accelerated by UV/H2O2 processes
Researchers used UV and hydrogen peroxide to simulate environmental aging of biodegradable polylactic acid (PLA) microplastics, finding that PLA microplastics undergo significant surface and structural changes during weathering that alter their environmental behavior and persistence.
Release of microplastics from a bio-based composite after ultraviolet irradiation
Researchers examined the release of microplastic particles from a bio-based polylactic acid (PLA) composite material following ultraviolet irradiation in laboratory conditions, quantifying microplastic formation through observation, identification, and enumeration of released particles. The study aimed to assess whether bio-based polymers marketed as more sustainable alternatives to petroleum-based plastics like polypropylene still generate microplastic pollution during UV-driven environmental degradation.
Photo-Aging of Biodegradable Polylactic Acid Microplastics
Researchers investigated the photo-aging of polylactic acid (PLA) microplastics, finding that UV exposure caused fragmentation that increased total particle numbers while decreasing average particle size. The study provides quantitative data on how biodegradable PLA plastics generate secondary microplastics through photoaging, a previously poorly characterized degradation pathway for this widely used industrial bioplastic.
Insights into the photoaging behavior of biodegradable and nondegradable microplastics: Spectroscopic and molecular characteristics of dissolved organic matter release
Researchers compared how biodegradable and conventional microplastics break down under ultraviolet light and what dissolved substances they release. They found that biodegradable PLA microplastics released more protein-like organic matter during UV exposure than conventional polystyrene, and this matter was more readily used by microorganisms. The study suggests that biodegradable plastics, while designed to be better for the environment, may introduce different ecological risks as they break down.
Impact of the Incorporation of Nano-Sized Cellulose Formate on the End Quality of Polylactic Acid Composite Film
Researchers found that incorporating nano-sized cellulose formate fillers, including cellulose nanofibrils and nanocrystals, into polylactic acid films significantly improved mechanical strength and barrier properties while maintaining the biodegradable character of the composite, offering a path toward higher-performance sustainable packaging.
Analisis Sifat Mekanik dan Permukaan pada Degradasi Plastik Konvensional
An Indonesian study tested the degradation of biodegradable plastic materials under UV light, sunlight, and soil burial, measuring changes in mechanical properties and surface structure. The research contributes to understanding how biodegradable plastics perform in real-world environmental conditions compared to conventional plastics.
Micro- and nanoplastics released from biodegradable and conventional plastics during degradation: Formation, aging factors, and toxicity
Researchers compared how biodegradable and conventional plastics break down into micro- and nanoplastics during degradation, testing the effects of UV light and mechanical forces. They found that biodegradable plastics like PLA and PBS can produce significant quantities of secondary microplastics, challenging the assumption that they are entirely safe alternatives. The study highlights the need for risk assessments of biodegradable plastics, particularly the tiny fragments generated as they break down.
Cellulose Nanofibrils Dewatered with Poly(Lactic Acid) for Improved Bio-Polymer Nanocomposite Processing
This paper is not about environmental microplastics; it describes a manufacturing process for combining cellulose nanofibers with polylactic acid (a biodegradable bioplastic) to make stronger composite materials, with no relevance to plastic pollution or human health risk.
Artificial Ageing, Chemical Resistance, and Biodegradation of Biocomposites from Poly(Butylene Succinate) and Wheat Bran
Researchers found that biocomposites made from poly(butylene succinate) and wheat bran showed accelerated degradation under UV aging and enhanced biodegradation in soil compared to neat PBS, with the natural filler acting as a nucleation point for degradation and improving overall compostability.
Biodegradation Properties of Cellulose Fibers and PLA Biopolymer
Researchers tested how quickly natural fibers like hemp, jute, and sisal break down in soil compared to PLA bioplastic, which is often marketed as eco-friendly. The natural cellulose fibers degraded significantly within days, while PLA broke down much more slowly. This matters because slow-degrading bioplastics can still fragment into microplastics, meaning they may not be the environmental solution many assume.
3D-printed polylactic acid biopolymer and textile fibers: comparing the degradation process
3D-printed polylactic acid (PLA) objects and PLA textile fibers were compared in their degradation behavior under composting and environmental conditions. Both materials degraded over time but at different rates depending on their physical form and surface area. The study provides insights into how PLA-based products break down and whether they produce persistent microplastic residues.
Abiotic degradation and accelerated ageing of microplastics from biodegradable and recycled materials in artificial seawater
Researchers examined the degradation behavior of microplastics from two biodegradable plastics (polylactic acid and Mater-Bi) and recycled PET under simulated seawater and photo-oxidative conditions. They identified hydrolysis as the primary degradation pathway and characterized the oligomers, degradation products, and plastic additives released into the water. The study improves understanding of how these alternative plastic materials break down in marine environments and what chemicals they release.
Developing environmentally relevant test materials for microplastic research through UV-induced photoaging
Researchers used UV irradiation to create photoaged microplastics from multiple polymer types as environmentally relevant test materials for ecotoxicology research, characterizing how aging changes surface chemistry, particle size distribution, and potential biological effects.
Modifications of Polymers through the Addition of Ultraviolet Absorbers to Reduce the Aging Effect of Accelerated and Natural Irradiation
Ultraviolet absorbers added to polymer formulations were reviewed for their effectiveness in reducing photodegradation, which can break polymer bonds and form free radicals that accelerate microplastic generation, with the review identifying conditions where UV stabilizers most effectively extend plastic service life.
Cellulose-Reinforced Polylactic Acid Composites for Three-Dimensional Printing Using Polyethylene Glycol as an Additive: A Comprehensive Review
This comprehensive review examined how cellulose-reinforced polylactic acid composites with polyethylene glycol additives can be used for 3D printing as biodegradable alternatives to petroleum-based plastics. The research found that these bio-based materials show promise for reducing plastic waste, though challenges remain in matching the mechanical properties of conventional plastics.