Results 11 to 20 of about 3,337 (294)

Conversion of Polyethylenes into Fungal Secondary Metabolites [PDF]

Angew Chem Int Ed Engl, 2022
Waste plastics represent major environmental and economic burdens due to their ubiquity, slow breakdown rates, and inadequacy of current recycling routes.
Swati Bijlani, Chen, Yuhao, Rabot, Chris, Clay C. C. Wang, Yuhao Chen, Bijlani, Swati, Wang, Clay C. C., Berl R. Oakley, Yi‐Ming Chiang, Chiang, Yi‐Ming, Chris Rabot, Williams, Travis J., Oakley, C. Elizabeth, C. Elizabeth Oakley, Travis J. Williams, Oakley, Berl R.   +15 more
core   +2 more sources

Tuning 2,3-Bis(arylimino)butane-nickel Precatalysts for High-Molecular-Weight Polyethylene Elastomers [PDF]

Molecules
The catalytic performance of α-diiminonickel complexes is highly sensitive to structural modifications in their ligand frameworks. In this study, a series of unsymmetrical 2,3-bis(arylimino)butane-nickel complexes featuring ortho-2,6-dibenzhydryl groups ...
Dongzhi Zhu, Dedong Jia, Qiuyue Zhang, Yanping Ma, Qaiser Mahmood, Wen-Hua Sun   +5 more
doaj   +2 more sources

Controlled Copolymerization of Ethylene and Biosourced Comonomers Using Dibenzobarrelene-Based α-Diimine Nickel Catalyst [PDF]

Molecules
The development of earth-abundant nickel-based catalysts is currently one of the greatest challenges for the straightforward synthesis of functionalized polyolefins.
Handou Zheng, Junsong Wang, Zonglin Qiu, Chunyu Feng, Haotian Zhou, Guangshui Tu, Haiyang Gao   +6 more
doaj   +2 more sources

Cyano-functionalized polyethylenes from ethylene/acrylamide copolymerization [PDF]

Nature Communications
Synthesizing functionalized polyethylenes via ethylene coordination copolymerization with fundamental low-cost vinyl polar monomers provides a very attractive approach.
Shu-Yang Yu, Xiao-Yan Wang, Xiu-Li Sun, Yanshan Gao, Yanan Zhao, Xiao-Shan Ning, Gang Ji, Yuan Lu, Jie Yang, Zhi-Pan Liu, Yong Tang   +10 more
doaj   +2 more sources

Photodegradable branched polyethylenes from carbon monoxide copolymerization under benign conditions

Nature Communications, 2020
Small amounts of in-chain keto groups render polyethylene (PE) photodegradable, a desirable feature in view of environmental plastics pollution. Here the authors introduce low ketone content by copolymerization in organic solvent or under aqueous ...
Tobias O. Morgen, Maximilian Baur, Inigo Göttker-Schnetmann, Stefan Mecking   +3 more
doaj   +2 more sources

Finely-Tuned Bis(imino)pyridylcobalt Complexes Enhance Ethylene Polymerization: The Role of Bulky and Halogen Substituents [PDF]

Molecules
The bis(imino)pyridylcobalt complexes have been finely tuned through using the aniline derivative bearing a meta-chloro substituent, besides its ortho- and para-di(4-fluorophenyl)methyl and ortho-methyl substituents for the series of 2-[1-(3-chloro-4,6 ...
Elizabeth Ogbe, Yanping Ma, Yizhou Wang, Jiahao Gao, Yang Sun, Wen-Hua Sun   +5 more
doaj   +2 more sources

Catalytic Hydroxylation of Polyethylenes

ACS Central Science, 2017
Polyolefins account for 60% of global plastic consumption, but many potential applications of polyolefins require that their properties, such as compatibility with polar polymers, adhesion, gas permeability, and surface wetting, be improved.
Ala Bunescu, Sunwoo Lee, Qian Li, John F. Hartwig   +3 more
doaj   +2 more sources

Upcycling polyethylene into closed-loop recyclable polymers through titanosilicate catalyzed C-H oxidation and in-chain heteroatom insertion [PDF]

Nature Communications
Polyolefins are the most widely produced type of plastics owing to their low production cost and favorable properties. Their polymer backbone consists solely of inert C-C bonds, making them resistant and durable materials.
Robin Lemmens, Jannick Vercammen, Lander Van Belleghem, Dirk De Vos   +3 more
doaj   +2 more sources

Supporting data for Chemically Recyclable Linear and Branched Polyethylenes Synthesized from Stoichiometrically Self-balanced Telechelic Polyethylenes

, 2022
A full description can be found in the README.txt file. The files below include raw characterization data used in the manuscript , including: differential scanning calorimetry (DSC) data, extensional rheology data, infrared (IR) spectroscopy data, matrix-
Nguyen, Sam, Jang, Yoon-Jung, Hillmyer, Marc A   +2 more
core   +1 more source

Selective, Catalytic Oxidations of C–H Bonds in Polyethylenes Produce Functional Materials with Enhanced Adhesion [PDF]

, 2021
The synthesis of functional and processable polyethylenes from simple vinyl monomers with controlled molecular weights and architectures has been a grand challenge of polymer chemistry.
Hartwig, John F, Messersmith, Phillip B, Sanchez, Daniel, Uliana, Adam, Chen, Liye, Malollari, Katerina G   +5 more
core   +1 more source