Results 31 to 40 of about 5,484 (123)

Hydrophobic association supramolecular gel suitable for oil and gas drilling in fractured formation

Frontiers in Chemistry
Supramolecular gel can be used to seal fractures and pores in the formation during oil and gas drilling and production. In this study, a supramolecular gel plugging agent based on hydrophobic association was prepared by free radical polymerization of ...
Yongquan Han, Zhixue Yu, Zijun Guan, Rui Ma, Yuzhou Hu   +4 more
doaj   +1 more source

Natural Aging of Biomaterials in Ambient and Physiological Environments

Advanced NanoBiomed Research, EarlyView.
Biomaterials used in biomedical applications can change their physical properties over time, even under ambient and physiological conditions. This review highlights key studies on the natural aging of materials ranging from soft hydrogels to metals and ceramics, emphasizing how time‐dependent changes influence function and performance.
Shuyu Zhang, Anne E. Staples
wiley   +1 more source

Hierarchically Porous Coatings for Cellulose Fibers by Core–Shell Particle Templating

Macromolecular Rapid Communications, EarlyView.
Hybrid and functional core–shell particles comprising a silica core and a polymer shell were synthesized and used to develop a coating and etching process applied to a cellulose substrate. This resulted in highly porous, functional coatings on a cellulose membrane for further application in cellulose‐based adsorbers and advanced membrane technology ...
Regina Leiner, Derya Kurt, Sebastian Heinz, Volker Presser, Bizan N. Balzer, Markus Gallei   +5 more
wiley   +1 more source

A PLP‐SEC Investigation of Di(Ethylene Glycol) Methyl Ether Methacrylate Radical Polymerization Propagation Kinetics in Solution

Macromolecular Reaction Engineering, EarlyView.
The propagation rate coefficient of di(ethylene glycol) methyl ether methacrylate exhibits the same temperature dependency but is a factor of 12 higher in aqueous solution compared to bulk. Smaller increases are observed in ethanol and ethanol/water mixtures, with the value of the rate coefficient decreasing as the monomer concentration in solution is ...
Fatemeh Salarhosseini, Robin A. Hutchinson   +1 more
wiley   +1 more source

Electrospun conducting polymers: recent trends and the transition towards a sustainable future

Polymer International, EarlyView.
This review discusses the electrospinning of conducting polymers, detailing procedures, fibrous morphologies, improved properties, applications in electronics, and challenges, while outlining future directions for nanofibre‐based devices in various fields.
Xenofon Karagiorgis, Sofia Sandhu, Peter J. Skabara, Ravinder Dahiya   +3 more
wiley   +1 more source

Synthesis of carboxyl-terminated liquid nitrile-butadiene-butylacrylate rubber and mechanical properties of toughening epoxy resin

Hecheng xiangjiao gongye
"Carboxyl-terminated liquid nitrile rubber (CTBN) has been extensively studied for toughening modification of epoxy resin due to its good compatibility and telechelic polymer nature, allowing the carboxyl groups to react with the epoxy groups［1-2 ...
TONG Shao-kai1, YUE Yan-fang1, FENG Zhan-wei2, HE Jian-yun2 *, FAN Wei-feng2 *
doaj   +1 more source

Unsaturated biobased polyesters from bicyclic α‐pinene‐based diols

Polymer International, EarlyView.
We present the synthesis of four biosourced unsaturated polyesters made from chiral terpene‐based diols and esters of renewable diacids. The resulting materials harbor a bicyclic pinene ring in their backbones which leads to enhanced thermal properties while still conferring susceptibility to enzyme hydrolysis for chains having a cis alkene.
Ganapathy Ranjani, Shengwei Sun, Erik Sundén, Diana Bernin, Per‐Olof Syrén   +4 more
wiley   +1 more source

Synthesis and application of polyacrylate reverse demulsifier with high stability

Gongye shui chuli
Polyacrylate reverse demulsifier CR-3 was synthesized with methyl methacrylate, ethyl acrylate, and styrene as monomers by aqueous polymerization method. The effects of emulsifier type, emulsifier dosage, and effective content of CR-3 on the stability of
GUO Xiaoyi, ZHANG Ying, WANG Yongjun, LIU Xuemin, CUI Guangzhen, WU Jiefeng   +5 more
doaj   +1 more source

Synthesis of Poly(Itaconate)s With High Monomer Conversion Applying Emulsion Polymerization

Journal of Polymer Science, Volume 63, Issue 6, Page 1284-1296, 15 March 2025.
Itaconic acid and its derivatives are a promising and bio‐based substitute for oil‐based polymers such as acrylates. In this study, the optimization of polymerization of itaconic acid esters is described by applying emulsion polymerization leading to high reaction conversions and low residual monomer contents. ABSTRACT Itaconic acid and its derivatives
S. Charlotte Fischer von Mollard, Nico Ueberschaar, Martin Schreiber, Frank Kamphuis, Stefan Zechel, Martin D. Hager   +5 more
wiley   +1 more source

Synthetic polymer nanocarrier enhances dsRNA stability but not RNAi efficacy in Brassicogethes aeneus

Pest Management Science, EarlyView.
Experimental setup for dsRNA feeding in Brassicogethes aeneus to evaluate the effect of a synthetic polymer nanocarrier on RNAi efficiency. The experiment assessed whether the nanocarrier enhances RNAi after oral dsRNA delivery. (a) Stability of dsRNA–nanocarrier complexes was tested in simulated gut conditions. (b) Gene expression of αCOP and dre4 was
Triin Kallavus, Liina Soonvald, Iris Callewaert, Ana Isabel Silva, Ericmar Ávila Dos Santos, Silva Vilumets, Riina Kaasik, Sven Vereecken, Lenny Van Daele, Peter Dubruel, Jonathan Willow, Clauvis Nji Tizi Taning, Kristof De Schutter, Eve Veromann   +13 more
wiley   +1 more source