Results 111 to 120 of about 149,499 (333)

Synthesis of branched polystyrenes via cationic polymerisation

, 2006
Branched polystyrenes have been prepared rapidly (within 15 min) and in good yields (40–99%) in dichloromethane solution at 0 °C via cationic copolymerisation of styrene (St) with divinylbenzene (DVB) using SnCl4 as the initiator. All reaction components
Cormack, Peter, Camerlynck, Stephanie, Sherrington, David C.   +2 more
core   +3 more sources

THERMAL STUDIES OF METAL POLYSTYRENES .4.

, 1992
The thermal stability of metal polystyrene was determined by thermogravimetric analyses (TGA) from 25 to 250-degrees-C under nitrogen flow.The kinetic data obtained by TGA show that the thermostability of these polymers decreases in the following order ...
CARDENAS, G, RETAMAL, C, TAGLE, LH
core  

Synthesis via ATRP and Anchoring Properties of Ammonium-Terminated Monofunctional or Telechelic Polystyrenes

, 2007
Mono- and di-(trimethylammonium)-terminated polystyrenes with similar molar masses were synthesized. Bromopolystyrenes were first prepared by atom transfer radical polymerization (ATRP) using (N-Boc-propylamino)-2-bromoisobutyrate as initiator and Cu(I ...
Monge, Sophie, Antonova, Krassimira, Robin, Jean-Jacques, Blanc, Christophe, Nobili, Maurizio, Toquer, Guillaume   +5 more
core   +1 more source

Coordination Bridges in Confined‐Water Domains Enable Partially Desolvated Zn2+ Transport in Aqueous Zinc‐Ion Batteries

Advanced Materials, EarlyView.
A multifunctional polymer layer with amide and imidazolium groups simultaneously suppresses dendrite growth and hydrogen evolution in Zn‐ion batteries. By providing Zn2+ binding sites and forming a confined‐water domain that acts as a coordination bridge, it boosts single‐ion conductivity and stability, enabling 4000 stable cycles in Zn‐I2 full cells ...
Jin Seong Cha, Dongmin Jeon, Kyungmi Kim, Yuna Hwang, Eun Jeong Yoon, Donghee Gueon, Young‐Woo Choi, Chan‐Woo Lee, Jung Hoon Yang   +8 more
wiley   +1 more source

Hybrid hard carbon framework derived from polystyrene bearing distinct molecular crosslinking for enhanced sodium storage

Carbon Energy
Exploiting high‐performance yet low‐cost hard carbon anodes is crucial to advancing the state‐of‐the‐art sodium‐ion batteries. However, the achievement of superior initial Coulombic efficiency (ICE) and high Na‐storage capacity via low‐temperature ...
Yuqian Qiu, Guangshen Jiang, Yanxia Su, Xinren Zhang, Yuxuan Du, Xiaosa Xu, Qian Ye, Jinbo Zhang, Miaohan Ban, Fei Xu, Hongqiang Wang   +10 more
doaj   +1 more source

Enhancement of the mechanical properties and spatial uniformity of lightweight expanded polystyrene concrete using carbonated recycled fine aggregate

Case Studies in Construction Materials
While environmentally beneficial, recycled fine aggregates (RFA) are limited by high porosity and poor interfacial properties, which also aggravate segregation behavior in lightweight expanded polystyrene (EPS) concrete.
Chenxi Li, Xuetao Zhang, Tao Shi, Yufeng Song, Yuhui Ouyang   +4 more
doaj   +1 more source

Adhesion and corrosion resistance properties of modified polystyrenes

, 2008
wIn this study, chemical modification of different molecular weight polystyrenes (PS) was researched with various functional group modificators: epichlorohydrin, maleic, and acetic anhydrides, in one stage and in the medium of BF3O(C2H5)(2) cationic ...
Ahmetli, Gülnare, Kaya, Ayşe, Özkeçeci, Ayşe, Gulnare Ahmetli, Ayse Ozkececi, Ayse Kaya   +5 more
core   +1 more source

Near‐Infrared Imaging of H2O2 in Plants With Nanosensors Under Environmentally Changing Conditions

Advanced Materials, EarlyView.
This paper reports a ratiometric nanosensor enabling robust, multivariate detection of stress signals (H2O2) in plants, with high resistance to light fluctuations and mechanical disturbances. Single‐walled carbon nanotubes serve as the sensor, Egyptian Blue nanosheets serve as a stable reference, and plant autofluorescence serves as a label‐free ...
Jiaqi Li, Bjoern F. Hill, Chen Ma, Juliana Gretz, Tanuja Kistwal, Janus A. C. Wartmann, Justus T. Metternich, Juan Pablo Giraldo, Sebastian Kruss   +8 more
wiley   +1 more source

Assessing the impact of dietary polystyrene nanoplastics on growth performance, immunological parameters, and antioxidant defense in zebrafish (Danio rerio)

Journal of the World Aquaculture Society
This trial was performed in order to investigate the response of zebrafish (Danio rerio) to dietary exposure to polystyrene nanoplastics (PS‐NPs) under laboratory conditions on fish growth and health.
Ehsan Ahmadifar, Poulin Shohreh, Naser Kalhor, Mohsen Shahriari Moghadam, Sevdan Yilmaz, Sedigheh Mohammadzadeh, Mostafa Khajeh, Safoura Abarghouei   +7 more
doaj   +1 more source

Comparison of different solvent suppression techniques for polymer characterization with a 90 MHz benchtop spectrometer

Journal of Magnetic Resonance Open
In NMR spectroscopy, samples are usually dissolved in deuterated solvents to avoid overlap of small analyte signals with large, protonated solvent signals.
Johanna Tratz, Markus Matz, Manfred Wilhelm   +2 more
doaj   +1 more source