Results 11 to 20 of about 4,008 (250)

Metallocene Polyolefins Reinforced by Low-Entanglement UHMWPE through Interfacial Entanglements

Advances in Polymer Technology, 2022
By introducing low-entanglement UHMWPE, the mechanical properties of polyolefins are improved to varying degrees. For polypropylene, the lack of interaction between UHMWPE and polypropylene results in an unsatisfactory reinforcement effect, and the ...
Xin Tang, Jinheng Xing, Xiang Yan, Chunlin Ye, Letian Zhang, Yu Zhang, Baoqiang Shu, Jingshan Mu, Wei Li, Jingdai Wang, Yongrong Yang   +10 more
doaj   +1 more source

Thermally enhanced pristine polyolefins: fundamentals, progress and prospective

Journal of Materials Research and Technology, 2020
The low thermal conductivity of polymers hinders their use in applications requiring high thermal conductivity such as electronic packaging, heat exchangers, and thermal management devices. Polyethylene and polypropylene (polyolefins) account for ∼55% of
A.U. Chaudhry, Abdelnasser Mabrouk, Ahmed Abdala   +2 more
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A co-anchoring strategy for the synthesis of polar bimodal polyethylene

Nature Communications, 2023
Polar functional groups can improve the polymer properties of polyolefins but also poison the metal catalyst used during the polymerization reaction.
Chen Zou, Quan Wang, Guifu Si, Changle Chen   +3 more
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Identification of rare microbial colonizers of plastic materials incubated in a coral reef environment

Frontiers in Microbiology, 2023
Plastic waste accumulation in marine environments has complex, unintended impacts on ecology that cross levels of community organization. To measure succession in polyolefin-colonizing marine bacterial communities, an in situ time-series experiment was ...
Sebastian L. Singleton, Edward W. Davis, Holly K. Arnold, An Mei Y. Daniels, Susanne M. Brander, Rachel J. Parsons, Thomas J. Sharpton, Stephen J. Giovannoni   +7 more
doaj   +1 more source

State-of-the-Art Review of Aliphatic Polyesters and Polyolefins Biodeterioration by Microorganisms: From Mechanism to Characterization

Corrosion and Materials Degradation, 2023
As a result of the exponential growth in the production of plastics and their extended degradation period, strong environmental concerns in association with the disposal of plastic waste have emerged.
Shiva Khoshtinat
doaj   +1 more source

Kinetic Modelling of Biodegradability Data of Commercial Polymers Obtained under Aerobic Composting Conditions

Eng, 2021
Methods to treat kinetic data for the biodegradation of different plastic materials are comparatively discussed. Different samples of commercial formulates were tested for aerobic biodegradation in compost, following the standard ISO14855.
Ilenia Rossetti, Francesco Conte, Gianguido Ramis   +2 more
doaj   +1 more source

Selection criteria for recycled polyolefins from urban wastes by using TG analysis

Materials Research, 2007
The thermal behavior of a mixture of recycled polyolefins (PE/PP mix), variously colored recycled polyolefins, recycled polyolefin blends and recycled polyolefin/PET blends was analyzed by thermogravimetry.
Adhemar Ruvolo-Filho, José Manoel Marconcini   +1 more
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The effect of thermoplastic starch on the properties of polypropylene/high density polyethylene blend reinforced by nano-clay

Materials Research Express, 2020
Polypropylene (PP) and high density polyethylene (HDPE) was melt-blended in pairs at a constant of 80:20 (mm) compositions; this blend is prepared by one-step reactive extrusion in a single-screw extruder. The present study aims to investigate the effect
Yassine Hammache, Aicha Serier, Saliha Chaoui   +2 more
doaj   +1 more source

Machine learning for active sites prediction of quinoline derivatives

Artificial Intelligence Chemistry
Privileged structures, like quinoline, have diverse biological activities, and their synthetic versatility makes them crucial for drug design. In traditional synthesis methods, the C-H functionalization of quinoline can be effectively achieved using ...
Jie Sun, Zi-Hao Li, Yi-Fei Yang, Shu-Yu Zhang   +3 more
doaj   +1 more source

The Influence of t-Butyl and Cyclododecyl Substitution on Ethylene/1-Hexene Copolymerization Using Ansa-Fluorenylamidodimethyltitanium Derivatives

Molecules, 2011
In the present study, copolymerization of ethylene and 1-hexene was conducted with a series of ansa-fluorenylamidodimethyltitanium complexes, including [t-BuNSiMe2Flu]TiMe2 (complex 1), [cyclododecylNSiMe2Flu]TiMe2 (complex 2) and [t-BuNSiMe2(2,7-t ...
Bunjerd Jongsomjit, Zhengguo Cai, Takeshi Shiono, Piyasan Praserthdam, Yuuichi Sogo, Patcharaporn Kaivalchatchawal   +5 more
doaj   +1 more source