Results 21 to 30 of about 30,143 (300)

Functionalized Polyesters via Stereoselective Electrochemical Ring-Opening Polymerization of O-Carboxyanhydrides [PDF]

, 2020
Ring-opening polymerization is used to prepare polyesters with precisely controlled molecular weights, molecular weight distributions, and tacticities.
jia, chen, quanyou, feng, xiaoqian, wang, wenjun, cai, Yongliang, Zhong, Rong, Tong   +5 more
core   +2 more sources

Effects of microplastics in freshwater fishes health and the implications for human health [PDF]

Brazilian Journal of Biology, 2023
The presence of microplastics in aquatic environments has raised concerns about their abundance and potential hazards to aquatic organisms. This review provides insight into the problem that may be of alarm for freshwater fish.
M. L. Khan, H. U. Hassan, F. U. Khan, R. A. Ghaffar, N. Rafiq, M. Bilal, A. R. Khooharo, S. Ullah, H. Jafari, K. Nadeem, M. A. M. Siddique, T. Arai   +11 more
doaj   +1 more source

Degradation of Polyester Polyurethane by Bacterial Polyester Hydrolases [PDF]

Polymers, 2017
Polyurethanes (PU) are widely used synthetic polymers. The growing amount of PU used industrially has resulted in a worldwide increase of plastic wastes. The related environmental pollution as well as the limited availability of the raw materials based on petrochemicals requires novel solutions for their efficient degradation and recycling.
Juliane Schmidt, Ren Wei, Thorsten Oeser, Lukas Dedavid e Silva, Daniel Breite, Agnes Schulze, Wolfgang Zimmermann   +6 more
openaire   +3 more sources

Homo- and Hetero-Recyclable Polyesters with High Refractive Index from CO2, 1,3-Butadiene and Thiols [PDF]

, 2023
α-Ethylidene-δ-vinyl-δ-valerolactone (EVL) is the only intermediate to synthesize copolymers of CO2 with 1,3-butadiene whose ring-opening polymerization (ROP), however, is obstructed by the tiglate group.
Xufeng, Ni, Jun, Ling, Kaihao, Chen, Zhuorui, Zhang, Junjie, Zeng, Ting, Shen   +5 more
core   +2 more sources

Telechelic polyesters and polycarbonates prepared by enzymatic catalysis

, 2017
The majority of polyesters and polycarbonates are traditionally synthesized through conventional metal-based catalysis. Although effective, due to environmental concerns, their substitution for other more environmentally friendly alternatives has ...
Malmström, Eva,, Martinelle, Mats,, Hult, Karl,, Torron, Susana,, Johansson, Mats,, Fogelström, Linda,   +5 more
core   +1 more source

Terephthalic Acid Copolyesters Containing Tetramethylcyclobutanediol for High‐Performance Plastics

ChemistryOpen, 2021
There is a need for high‐performance applications for terephthalic acid (TPA) polyesters with high heat resistance, impact toughness, and optical clarity.
Dr. Samarthya Bhagia, Dr. Kamlesh Bornani, Dr. Soydan Ozcan, Dr. Arthur J. Ragauskas   +3 more
doaj   +1 more source

Unveiling the Enzymatic Degradation Process of Biobased Thiophene Polyesters

Frontiers in Chemistry, 2021
In the past 20 years, scientific research focused on the identification of valid alternatives to materials of fossil origin, in particular, related to biobased polymers. Recently, the efforts led to the synthesis of thiophene-based polymers (TBPs), a new
Federico A. Bertolini, Michelina Soccio, Simone Weinberger, Giulia Guidotti, Massimo Gazzano, Georg M. Guebitz, Georg M. Guebitz, Nadia Lotti, Alessandro Pellis, Alessandro Pellis, Alessandro Pellis   +10 more
doaj   +1 more source

Biobased Pyrazine-Containing Polyesters

, 2020
A set of 12 first-in-class, biobased pyrazine-containing polyesters was synthesized based on dimethylpyrazine dipropionic acid. These new diacid monomers were obtained from underutilized nitrogen-rich biomass. The polyester materials were synthesized via
Bernaerts, Katrien V.; id_orcid, Katrien V. Bernaerts, Martien A. Würdemann, Wurdemann, Martien A., Bernaerts, Katrien V.   +4 more
core   +1 more source

Machine Learning for the Optimization of the Bioplastics Design

Macromol
Biodegradable polyesters have gained attention due to their sustainability benefits, considering the escalating environmental challenges posed by synthetic polymers.
Neelesh Ashok, Pilar Garcia-Diaz, Marta E. G. Mosquera, Valentina Sessini   +3 more
doaj   +1 more source

Poly(ethylene glycol)-b-poly(1,3-trimethylene carbonate) Amphiphilic Copolymers for Long-Acting Injectables: Synthesis, Non-Acylating Performance and In Vivo Degradation

Molecules, 2021
This article presents the evaluation of diblock and triblock poly(ethylene glycol)-b-poly(1,3-trimethylene carbonate) amphiphilic copolymers (PEG-PTMCs) as excipients for the formulation of long-acting injectables (LAIs).
Silvio Curia, Feifei Ng, Marie-Emérentienne Cagnon, Victor Nicoulin, Adolfo Lopez-Noriega   +4 more
doaj   +1 more source