In this work, two different typologies of hazelnuts shell powders (HSPs) having different granulometric distributions were melt-compounded into poly(lactic acid) (PLA) matrix. Different HSPs concentration (from 20 up to 40 wt.%) were investigated with the aim to obtain final biocomposites with a high filler quantity, acceptable mechanical properties, and good melt fluidity in order to be processable. For the best composition, the scale-up in a semi-industrial extruder was then explored. Good results were achieved for the scaled-up composites; in fact, thanks to the extruder venting system, the residual moisture is efficiently removed, guaranteeing to the final composites improved mechanical and melt fluidity properties, when compared to the lab-scaled composites. Analytical models were also adopted to predict the trend of mechanical properties (in particular, tensile strength), also considering the effect of HSPs sizes and the role of the interfacial adhesion between the fillers and the matrix.
Download full-text PDF |
Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8658759 | PMC |
| http://dx.doi.org/10.3390/polym13234080 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
A new evidence-based design-of-experiments approach for optimizing drug delivery systems with exemplification by emulsion-derived Vancomycin-loaded PLGA capsules.
Sci Rep
December 2024
Faculty of Materials Science and Engineering, K. N. Toosi University of Technology, Tehran, Iran.
This paper introduces an evidence-based, design-of-experiments (DoE) approach to analyze and optimize drug delivery systems, ensuring that release aligns with the therapeutic window of the medication. First, the effective factors and release data of the system are extracted from the literature and meta-analytically undergo regression modeling. Then, the interaction and correlation of the factors to each other and the release amount are quantitatively assessed.
View Article and Find Full Text PDFThe role of biodegradable plastics in lignite anaerobic digestion: Changes of organics transformation and metabolic pathway.
Bioresour Technol
December 2024
School of Energy Science and Engineering, Henan Polytechnic University, Jiaozuo 454000, China. Electronic address:
Biodegradable plastics (BPs) and lignite, both rich in organic matter, present significant challenges for efficient conversion into clean energy. This study examined the anaerobic co-digestion of BPs and lignite under controlled laboratory conditions. The results demonstrated that the co-digestion of polylactic acid (PLA) and lignite (at a 1:2 mass ratio, with 5 g PLA and 10 g lignite as the model system) rapidly acclimated to the anaerobic environment, enhancing cumulative biogas production by 57 % compared to the mono-digestion of lignite alone.
View Article and Find Full Text PDFEnhanced flame retardancy and accelerated degradation of polylactic acid using a chitosan-based additive with phosphorus and zinc.
Int J Biol Macromol
December 2024
State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology, Beijing 100029, China. Electronic address:
Polylactic acid (PLA) is a bio-recyclable plastic, but its high flammability limits broader applications. Here, a novel flame retardant (Zn-CHP) is synthesized from chitosan (CH), diethylenetriaminepenta (methylenephosphonic) acid (DTPMP), and ZnCl₂ using a simple, solvent-free process. The Zn-CHP additive is melt-blended with PLA, achieving excellent flame retardancy at just 2 wt% loading.
View Article and Find Full Text PDFTranscription-metabolism analysis of various signal transduction pathways in Brassica chinensis L. exposed to PLA-MPs.
J Hazard Mater
December 2024
College of Environmental Science and Engineering, Shaanxi University of Science & Technology, Xi'an 710021, China. Electronic address:
Biodegradable plastics, regarded as an ideal substitute for traditional plastics, are increasingly utilized across various industries. However, due to their unique degradation properties, they can generate microplastics (MPs) at a faster rate, potentially posing a threat to plant development. This study employed transcriptomics and metabolomics to investigate the effects of polylactic acid microplastics (PLA-MPs) on the physiological and biochemical characteristics of Brassica chinensis L.
View Article and Find Full Text PDFEcotoxicity of Biodegradable Microplastics and Bio-based Microplastics: A Review of in vitro and in vivo Studies.
Environ Manage
December 2024
College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi Province, 712100, PR China.
As biodegradable and bio-based plastics increasingly replace conventional plastics, the need for a comprehensive understanding of their ecotoxicity becomes more pressing. This review systematically presents the ecotoxicity of the microplastics (MPs) from different biodegradable plastics and bioplastics on various animals and plants. High doses of polylactic acid (PLA) MPs (10%) have been found to reduce plant nitrogen content and biomass, and affect the accumulation of heavy metals in plants.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!