Evaluation of Eco-Friendly Hemp-Fiber-Reinforced Recycled HDPE Composites

Journal of Composites Science, Journal Year: 2023, Volume and Issue: 7(4), P. 138 - 138

Published: April 4, 2023

The exploitation of natural fibers to reinforce polymers is a promising practice. Thus, biocomposites have gained increased attention in automotive, construction, and agricultural sectors, among others. present work reports the reinforcement recycled high-density polyethylene (r-HDPE) with hemp afford composite materials as sustainable analogues conventional wood/plastic (WPC) products. HDPE bottles (postconsumer waste) were used r-HDPE further reinforced by addition fibers. For synthetic part, thirteen different filler concentrations (10–75% wt. fibers) using either Joncryl or polyethylene-grafted maleic anhydride (PE-g-MA) compatibilizers prepared via melt mixing. Materials good integrity obtained fiber load high 75% structural, thermal, mechanical, antioxidant properties r-HDPE/hemp composites evaluated multiple complementary characterization techniques. Stereoscopic microscope images demonstrated satisfactory dispersion into polymeric matrix, while scanning electron microscopy microphotographs revealed an improved adhesion between matrix presence compatibilizers. incorporation contributed improvement elastic modulus (almost up threefold increase). results showed that content increased, well degradability increased. It noteworthy containing neutralized 80% 2,2-diphenyil-1-picrylhydrazyl radicals within 45 min (DPPH assay). In conclusion, research demonstrates thermally biomass received from waste valid alternative for preparation commodity products eco-friendly character compared composites.

Language: Английский

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Targeted Pre-Treatment of Hemp Fibers and the Effect on Mechanical Properties of Polymer Composites

Fibers, Journal Year: 2023, Volume and Issue: 11(5), P. 43 - 43

Published: May 9, 2023

Research on plant-fiber-reinforced composites has gained significant research interest since it generates with exceptional mechanical properties; however, the potential of hemp fibers can only be fully exploited if are well separated from bundle to achieve cellulose-rich fibers. This is because well-separated bast that long and exhibit higher fiber aspect ratio enhance properties composite by influencing property translations upon loading. A key feature for successful implementation natural selectively remove non-cellulosic components yield minimal defects. Targeted pre-treatment techniques have been commonly used address aforementioned concerns optimizing fiber’s surface. in turn improves interfacial bonding between hydrophobic polymer, enhances robustness improving their thermal stability increases resistance microbial degradation. In this study, we comprehensively review targeted effect as a reinforcement polymeric composites.

Language: Английский

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The Emerging Hemp Industry: A Review of Industrial Hemp Materials and Product Manufacturing

AgriEngineering, Journal Year: 2024, Volume and Issue: 6(3), P. 2891 - 2925

Published: Aug. 14, 2024

There is a growing need for resilient and renewable materials to aid society in global sustainability. It incumbent upon the agricultural manufacturing industries work together achieve this vision. In particular, hemp plant has been identified as an emerging industrial crop that will be pivotal achieving United Nations Sustainable Development Goals. However, nascent industry received influx of research development activity, resulting various methods practices globally, challenging repeatability results, advancement, standards development, sustainability assessment. A systematic literature review conducted identify document (1) harvesting converting into products (2) existing hemp-derived those under development. Using PRISMA methodology, 5295 articles were identified, 109 included review. Unlike prior reviews focusing on specific components, materials, or products, study systematically evaluates utilization pathways whole (stalk, flower, leaf, seed) traditional, industrial, products. Further, myriad opportunities material product applications, performance assessment, future are discussed. This benefit research, advancing process technologies, developing novel establishing policies standards, assessing performance.

Language: Английский

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A review of the industrial use and global sustainability of Cannabis sativa

Global Sustainability Research, Journal Year: 2023, Volume and Issue: 2(4), P. 1 - 29

Published: Oct. 2, 2023

The Cannabis plant (Cannabis sativa L.), also known as hemp, is a sustainable and multipurpose that may be used for wide range of purposes, from the fiber in its stalks to food seeds oil flowers seeds. Since has been recognized an outstanding carbon trap environmentally friendly biofuel supports all three aspects sustainability—the economy, environment, society—it provide solution climate change dilemma. cultivation practiced dietary staple numerous places across globe extended period. However, production prohibited several countries mostly owing relationship with illicit drug consumption. illegality impeded research efforts period time on global scale. As result, people's ability assess whole beneficial effects dangers shrank. trend toward legalization decriminalization accelerated recent years. This stimulated more investigation into botanical, ecological, practical plant. study reviewed available literature understand about plant's sustainability. results demonstrated potential plants affect product sustainability use hemp renewable raw material. Furthermore, this review outlines connections between Sustainable Development Goals (SDGs) United Nations. fills gap our understanding highly promising multi-purpose crop future.

Language: Английский

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Bioethanol Production from Woody Biomass: Recent Advances on the Effect of Pretreatments on the Bioconversion Process and Energy Yield Aspects

Energies, Journal Year: 2023, Volume and Issue: 16(13), P. 5052 - 5052

Published: June 29, 2023

As greenhouse gas emissions are continuously increasing, research is now privileging greener and more sustainable human activities. An attractive strategy in the pursuit of sustainability valorization lignocellulosic biomasses for production bioethanol. This approach relies on bioconversion wood agricultural waste, which abundant globally. They represent considerable sources fermentable sugars that can be recovered through enzymatic hydrolysis. However, presence lignin waste makes it recalcitrant to hydrolysis, reduces efficiency process. Therefore, a pretreatment preceding hydrolysis highly necessary order disrupt resistant structure woody biomass. The type severity affect outcomes fermentation steps, just as they strongly influence overall process costs. Given this context, bioenergy from biomass promising alternative method sustainably responding energy demands while reducing amounts left nature. aim review thoroughly compare recent processes performed substrates over past five years, with focus thermomechanical pretreatments. Moreover, will discuss their separate impact process, energetic aspects.

Language: Английский

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Current and Potential Use of Biologically Active Compounds Derived from Cannabis sativa L. in the Treatment of Selected Diseases

International Journal of Molecular Sciences, Journal Year: 2024, Volume and Issue: 25(23), P. 12738 - 12738

Published: Nov. 27, 2024

Cannabis sativa L. contains numerous compounds with antioxidant and anti-inflammatory properties, including the flavonoids cannabinoids, particularly Δ-9-tetrahydrocannabinol (THC) cannabidiol (CBD). Cannabinoids have an effect on endocannabinoid system (ECS), a cellular communication network, are, hence, widely studied for medical applications. Epidiolex®, 99% pure oral CBD extract, has been approved by FDA treatment of epilepsy. Nabiximols (Sativex) is oromucosal spray containing equal volume THC CBD, it commonly used as add-on unresponsive spasticity in multiple sclerosis (MS) patients. Several vitro vivo studies also shown that cannabinoids can be to treat various types cancer, such melanoma brain glioblastoma; first positive clinical trials anticancer THC:CBD blend temozolomide (TMZ) highly invasive cancer are very promising. The exert their properties investigations induction cell death, mainly apoptosis cytotoxic autophagy, inhibition proliferation. In several studies, found induce tumor regression inhibit angiogenic mechanisms vivo, well two low-numbered epidemiological studies. They exhibit antiviral effects inhibiting ACE2 transcription, blocking viral replication fusion, acting agents; indeed, prior consumption (a study 93,565 persons Chicago) associated much lower incidence SARS-CoV-2 infections. It postulated cannabis extracts many other diseases systemic lupus erythematosus, type 1 diabetes, or neurological disorders, e.g., Alzheimer’s disease. aim this review outline current state knowledge regarding currently medicinal preparations derived from C. selected diseases, present latest research potential applications its secondary metabolites.

Language: Английский

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Biosynthesis of Phytocannabinoids and Structural Insights: A Review

Metabolites, Journal Year: 2023, Volume and Issue: 13(3), P. 442 - 442

Published: March 17, 2023

Cannabis belongs to the family Cannabaceae, and phytocannabinoids are produced by

Language: Английский

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Hemp: An Alternative Source for Various Industries and an Emerging Tool for Functional Food and Pharmaceutical Sectors

Processes, Journal Year: 2023, Volume and Issue: 11(3), P. 718 - 718

Published: Feb. 28, 2023

Hemp is a high-value crop that originated in Central Asia and historic but emerging cultivated plant. It may be grown for fiber, food, paper making, textiles, therapeutic reasons. In the 21st century, market interest hemp its products has notably increased because seed portions can utilized agri-food business, woody component of stem used green buildings, outer layer stems textile industry, extraction bioactive components from roots play vital role pharmacological industries. recently been demonstrated to viable alternative economies built on synthetic materials by pharmaceutical, paper, building, energy industries, among others. As result, goal this study assemble significant advancements hemp, as well identify research gaps direction opportunities. The plant will provided more encouragement used. Many applications pushed next level both producing environment profit. A strong vision well-defined plan pave path discovery new technologies concepts.

Language: Английский

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Structural Characteristics and Sound Absorption Properties of Waste Hemp Fiber

Coatings, Journal Year: 2022, Volume and Issue: 12(12), P. 1907 - 1907

Published: Dec. 6, 2022

In order to realize high-efficiency and high-value recycling of waste hemp fibers, the macromolecular structure, supramolecular morphological structure fibers were investigated by using Fourier transform infrared spectroscopy, X-ray diffractometry, upright metallurgical microscopy, scanning electron microscopy. According its structural characteristics, sound-absorbing mechanism fiber was analyzed, reason for good performance clarified. The acoustic impedance transfer function test used analyze compare several other aggregates that could be in field sound-absorbing, a composite material tested. research revealed that: sequence cotton fiber, wool polyester fiber; had excellent high-frequency performance, with maximum sound absorption coefficient 0.95; reached 0.93. Therefore, has properties high application value absorption.

Language: Английский

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Imaging the distribution of nutrient elements and the uptake of toxic metals in industrial hemp and white mustard with laser-induced breakdown spectroscopy

Spectrochimica Acta Part B Atomic Spectroscopy, Journal Year: 2023, Volume and Issue: 205, P. 106684 - 106684

Published: April 19, 2023

Language: Английский

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