Article
Green & Sustainable Science & Technology
Manal T. El-Sayed, Gamal H. Rabie, Esraa A. Hamed
Summary: Various fungi isolated from different landfill sites in Sharqiyah Governorate, Egypt were evaluated for their biodegradation ability of black LDPE sheets. Aspergillus carbonarius MH 856457.1 and A. fumigatus MF 276893 were identified as good candidates for LDPE biodegradation. A mixed culture of two strains showed excellent weight loss% of LDPE sheets compared to single isolate, indicating a potential strategy for improving biodegradation efficiency.
ENVIRONMENT DEVELOPMENT AND SUSTAINABILITY
(2021)
Article
Chemistry, Analytical
Huashan Li, XianJin Lyu, Wuming Xie, Ziyi Ding, Yong Liu, Jingyong Liu, Fatih Evrendilek, Ruili Zheng, Jianfang Lyu, Chunxiao Yang
Summary: The study investigated the co-pyrolysis of pineapple rind (PR) and low density polyethylene (LDPE) to understand its kinetic, interaction mechanisms, and product characteristics. The co-pyrolysis exhibited synergistic and antagonistic effects at different temperature ranges. The activation energy for co-pyrolysis was lower than that of individual PR or LDPE. The addition of 50% LDPE resulted in the lowest activation energy requirement. The co-pyrolysis inhibited the production of CO2 and promoted the formation of CH4, leading to improved pyrolytic oil quality. Multi-objective optimization suggested the optimal operational conditions for co-pyrolysis of 50% LDPE and 50% PR. This study provided valuable insights for optimizing the co-pyrolysis of fruit residues and plastic polymers.
JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS
(2023)
Article
Chemistry, Applied
Basheer Mansoor, Obaid Iqbal, Jean Claude Habumugisha, Zhijie Xia, Ruiping Jiang, Wei Chen
Summary: A Polyvinyl alcohol (PVA) based anti-fogging layer has been developed to increase the wettability of low-density polyethylene (LDPE) films for agricultural greenhouses application, with impressive long shelf life. The addition of Tris-buffered saline (TBS) and silica nanoparticles enhances the stability and super-hydrophilicity of the films, effectively solving the fogging issue for agriculture greenhouses.
PROGRESS IN ORGANIC COATINGS
(2021)
Article
Environmental Sciences
Federica Spina, Maria Laura Tummino, Anna Poli, Valeria Prigione, Viktoria Ilieva, Piersandro Cocconcelli, Edoardo Puglisi, Pierangiola Bracco, Marco Zanetti, Giovanna Cristina Varese
Summary: The fungal community in plastic-contaminated landfill soil was studied, showing that certain strains can utilize polyethylene as a sole carbon source for growth and degradation, with potential applications in plastic waste management.
ENVIRONMENTAL POLLUTION
(2021)
Article
Chemistry, Analytical
Ki-Bum Park, Joo-Sik Kim
Summary: In this study, a new TG-FTIR method was used to predict the pyrolysis products of LDPE, PP, PS, PET, and municipal plastic waste at different temperatures. The results showed that the pyrolysis products of LDPE and PP were primarily wax at 500°C. As the temperature increased, the production of light hydrocarbons increased, while the wax content decreased. Benzene and toluene formations were observed at temperatures above 800°C and 700°C for LDPE and PP, respectively. PS produced primarily styrene as the major component at 500-800°C, but with increasing temperature, the formations of alkenes, benzene, and toluene increased. PET produced mainly CO2 and CO as pyrolysis vapors, and the FT-IR spectra remained almost unchanged above 600°C. The product distribution of municipal plastic waste was similar to that of LDPE and PP. The new TG-FTIR method proved to be an effective tool for predicting pyrolysis products, especially gases with low molecular weights.
JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS
(2023)
Article
Food Science & Technology
Krushna Chapke, Kamal Gandhi, Kiran Lata, Rajan Sharma, Bimlesh Mann, Nishi Singh
Summary: This study aimed to develop analytical methods for the extraction and migration of chemical additives from LDPE packaging materials used for Dahi in India. Focused ultrasound solid liquid extraction method was found to be more effective in extracting additives from LDPE. Out of 76 chemical additives extracted, only 10.52% matched the existing standards set by the Bureau of Indian Standards (BIS). The migration of chemical additives from LDPE samples was below the maximum limit set by BIS. The migrated additives included antioxidants, fatty acids and their derivatives, unreacted hydrocarbons, plasticizers, lubricants, and surfactants.
JOURNAL OF FOOD SCIENCE AND TECHNOLOGY-MYSORE
(2022)
Article
Chemistry, Multidisciplinary
Seong-Hyun Kang, Hye-Min Lee, Kwan-Woo Kim, Byung-Joo Kim
Summary: This study presents a method for preparing low-temperature-stabilized HDPE-ACFs using a hybrid crosslinking method involving electron beam irradiation and sulfuric acid crosslinking. The hybrid crosslinked fibers were carbonized and then activated through steam activation, resulting in activated carbon fibers with high tensile strength and specific surface area. The surface morphology, structural characteristics, and pore characteristics of the HDPE-ACFs were analyzed using various techniques.
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
(2023)
Article
Engineering, Environmental
Deepa Devi, Kartikey Kumar Gupta, Harish Chandra, Kamal Kant Sharma, Kalpana Sagar, Edna Mori, Pablo Antonio Maia de Farias, Henrique Douglas Melo Coutinho, Abhay Prakash Mishra
Summary: The resiliency of plastic products against microbial degradation in natural environment often creates devastating changes for humans, plants, and animals on the earth's surface. Biodegradation of plastics using indigenous bacteria may serve as a critical approach to overcome this resulting environmental stress. A polyethylene degrading bacterium Alcaligenes faecalis strain ISJ128 was isolated from partially degraded polyethylene film buried in the soil at a plastic waste disposal site. The bacterium demonstrated high growth response and viability on polyethylene film, indicating its suitability for polyethylene degradation. Significant degradation of polyethylene film was observed within a short period of time, accompanied by changes in surface structure and functional groups. The stable nature of the bacterial strain reflects its potential as a degrader for eco-friendly disposal of polyethylene waste.
ENVIRONMENTAL GEOCHEMISTRY AND HEALTH
(2023)
Article
Environmental Sciences
Nuria Fernandez De Villalobos, Maria Clara Costa, Isabel Marin-Beltran
Summary: The study assessed the biodegradability of low-density polyethylene and biobased polyethylene terephthalate microplastic films by a consortium of marine bacteria, demonstrating signs of biodegradation in both types of plastics, especially in samples inoculated with bacteria.
MARINE POLLUTION BULLETIN
(2022)
Article
Materials Science, Composites
Abdirahman A. Yussuf, Mohammad A. Al-Saleh, Salah T. Al-Enezi, Gils Abraham
Summary: In this study, linear low density polyethylene (LLDPE) was grafted and crosslinked using reactive extrusion melt compounding with different silane concentrations and the presence of montmorillonite (MMT) nanoclay. The results showed that increasing silane concentration led to higher gel content, tensile strength, and Young's modulus in crosslinked LLDPE samples. Additionally, the addition of nanoclay filler enhanced the mechanical properties and thermal stability of the crosslinked LLDPE.
POLYMER COMPOSITES
(2021)
Article
Polymer Science
Yu Zhang, Yutao Di, Chunlin Ye, Letian Zhang, Xin Tang, Baoqiang Shu, Xiang Yan, Wei Li, Jingdai Wang, Yongrong Yang
Summary: The research found that miscible blends of UHMWPE and LLDPE can be obtained with a small addition amount of UHMWPE, and the mechanical properties of the blends are improved through the co-crystallization of UHMWPE, leading to significant increases in impact strength, breaking elongation, Young's modulus, and tensile strength when the addition amount of UHMWPE is 5.0 wt%.
POLYMERS FOR ADVANCED TECHNOLOGIES
(2022)
Article
Polymer Science
Beibei Sun, Li Dang, Qiuyan Bi, Rujie Li, Qiuhui Gong, Zhihao Wan, Shiai Xu
Summary: In this study, maleic anhydride-modified polymers were used as bulking agents to improve the processing and mechanical properties of highly filled composites. The addition of the compatibilizer significantly enhanced the mechanical properties of the composites, but had a negative impact on their flame retardancy.
Article
Construction & Building Technology
Georgios Pipintakos, Hilde Soenen, H. Y. Vincent Ching, Christophe Vande Velde, Sabine Van Doorslaer, Filip Lemiere, Aikaterini Varveri, Wim Van den Bergh
Summary: This study focused on identifying the intermediate and final oxygenated products of binders from different crude sources after short- and long-term laboratory ageing. Analyzing the results from FTIR, EPR, H-1 NMR, and TOF-SIMS, it was found that the increase of sulfoxide and carbonyl functional groups, as well as organic carbon-centered radicals, were related to the ageing process and binder characteristics.
CONSTRUCTION AND BUILDING MATERIALS
(2021)
Article
Chemistry, Physical
Ales Mizera, Miroslav Manas, Pavel Stoklasek
Summary: The temperature ageing of high-density polyethylene (HDPE) modified by radiation cross-linking was studied. The results showed that radiation cross-linking significantly improved the temperature stability of HDPE.
Article
Materials Science, Multidisciplinary
Gamze Bayraktar, Bilal Demirel, Ali Yaras, Fatih Akkurt, Dervis Ozkan, Yusuf Er
Summary: The study investigated the effect of incorporating industrial waste iron scale, which has high iron content, into LDPE. The results showed that increasing the content and particle size of iron scale led to an increase in volume loss of the composites, and smaller particle size resulted in higher specific wear rates. The addition of iron scale increased the hardness and elongation at break of the material, while the tensile strength was not significantly affected. Moreover, the incorporation of iron scale did not significantly change the initial degradation temperature of LDPE and composites. Overall, LDPE composites outperformed pure LDPE in terms of mechanical and wear properties.
MATERIALS TODAY COMMUNICATIONS
(2022)