Results 61 to 70 of about 6,548 (226)

Degradation strategies for structural characterization of insoluble synthetic polymers by mass spectrometry

Mass Spectrometry Reviews, EarlyView.
Abstract With the advent of soft ionization techniques such as electrospray (ESI) and matrix‐assisted laser desorption/ionization (MALDI) to produce intact gas‐phase ions from nonvolatile macromolecules, mass spectrometry has become an essential technique in the field of polymeric materials.
Thierry N. J. Fouquet, Robert B. Cody, Laurence Charles   +2 more
wiley   +1 more source

Ionic Fragmentation of Methyl Methacrylate Induced by Synchrotron Radiation and Multiphoton Ionization

Journal of the Brazilian Chemical Society, 1998
Ionic fragmentation of methylmethacrylate has been observed using synchrotron radiation and laser excitation. A recently developed time-of-flight mass spectrometer was used for the ionic identification.
Quintella Cristina M., Souza G. Gerson B. de, Maciel Joselito B.   +2 more
doaj  

Synthesis and Properties of Adhesive Polymer-Methylmethacrylate Materials

International Journal of Polymer Science, 2018
Kinetics of emulsion polymerization of hydrophilic vinyl monomers in the presence of polyvinylpyrrolidone and technological principles of their synthesis are determined.
Ulyana Khromiak, Volodymyr Levytskyi, Kateryna Stepova, Andry Tarnawsky   +3 more
doaj   +1 more source

Assessment of Occupational Symptoms and Chemical Exposures for Nail Salon Technicians in Daegu City, Korea [PDF]

Journal of Preventive Medicine and Public Health, 2014
Objectives This study aimed to evaluate occupational symptoms and chemical exposures of nail salon technicians. Methods Work-related symptoms of nail salon technicians in Daegu City were surveyed using a researcher-administered questionnaire, and ...
Sung-Ae Park, Sugyeong Gwak, Sangjun Choi   +2 more
doaj   +1 more source

Mechanical performance of bio‐based fiber reinforced polymer composites: A review

Polymer Composites, EarlyView.
Applications of bio‐based fiber reinforced polymer composites in various sectors. Abstract Natural fiber‐reinforced polymeric composites (NFRCs) offer a sustainable solution at the intersection of environmental consciousness and materials engineering. These composites address plastic pollution and industrial material demands by utilizing natural fibers
Daksh Shelly, Varun Singhal, Sachin Jaidka, Mariana Doina Banea, Seul‐Yi Lee, Soo‐Jin Park   +5 more
wiley   +1 more source

Recent Advances in Polyimine Chemistry: Synthesis, Functional Design, and Degradation

Journal of Polymer Science, EarlyView.
Conjugated polymers face sustainability challenges amid rising plastic waste. This perspective explores recent efforts in synthesizing CN bond‐containing polymers, emphasizing their degradability and technological implications. Polyimines emerge as promising candidates for recyclable, stimuli‐responsive materials, with potential applications in ...
Debsena Chakraborty, Alex J. Plajer
wiley   +1 more source

Síntese e caracterização de copolímeros reticulados à base de estireno, divinilbenzeno e metacrilato de metila com propriedades magnéticas Synthesis and characterization of crosslinked copolymers based on syrene, divinylbenzene and methyl methacrylate with magnetic properties

Polímeros, 2013
Neste trabalho, foram sintetizados copolímeros à base de estireno (STY), divinilbenzeno (DVB) e metacrilato de metila (MMA) com propriedades magnéticas pela técnica de polimerização em suspensão.
Flavio S. Souza, Marcos A. S. Costa, Luiz Claudio de Santa Maria, Ivana L. Mello, Manoel R. Silva, Shu H. Wang   +5 more
doaj  

Assessment of methyl methacrylate vapor toxicity on the rat tracheal epithelium Análise da toxicidade dos vapores de metil metacrilato sobre o epitélio traqueal de ratos

Brazilian Oral Research, 2005
Methyl methacrylate (MMA) is a monomer that is polymerized into resin by light and heat, producing a clear, resistant, durable and relatively inert plastic material.
José Luiz Santos Parizi, Gisele Alborghetti Nai, Camila Fedatto Batalha, Carla Cristina Barbosa Lopes, Mariana Fernandez Rizzo, Ciro Eduardo Falcone, José Maria Bertão   +6 more
doaj   +1 more source

High Ionic Conduction in Rb‐ and Cs‐Mixed Cation Amide for Energy Storage

Small, EarlyView.
A mixed cation‐amide solid solution, Rb0.5Cs0.5NH2, based on the interaction between RbNH2‐ and CsNH2, has been developed. The Rb⁺/Cs⁺ cationic substitution leads to structural stabilization, resulting in high ionic conductivity in the Rb0.5Cs0.5NH2 compared to the single compounds.
Thi Thu Le, Kai Sellschopp, Fabrizio Murgia, Anna Louise Garden, Simone Bordignon, Jan Peter Embs, Michele Remo Chierotti, Alexander Schökel, Fahim Karimi, Paul Jerabek, Thomas Klassen, Claudio Pistidda   +11 more
wiley   +1 more source

An unexpected cause of severe and refractory PTH-independent hypercalcemia: case report and literature review

Archives of Endocrinology and Metabolism
Hypercalcemia is a common condition in the internal medicine practice. Sometimes its cause is not readily apparent, so extensive investigation is appropriate. Here we report an unexpected cause for hypercalcemia in an elderly woman.
Dimitris Varvaki Rados, Tania Weber Furlanetto   +1 more
doaj   +1 more source