Results 11 to 20 of about 52,466 (218)

Effects of Different Environment-Friendly Gibberellic Acid Microcapsules on Herbicide Injury of Wheat

Frontiers in Plant Science, 2022
Environmentally friendly microcapsules are becoming more and more widely used due to the increasing demand for environmental safety in pesticides.
Guisen Zhang, Tao Ma, Yong Cheng, Jianing Wang, Lang Liu, Baojun Zhang   +5 more
doaj   +1 more source

Chemical resistance of core-shell particles (PS/PMMA) polymerized by seeded suspension

Polímeros, 2017
Core-shell particles were produced on seeded suspension polymerization by using polystyrene (PS) as polymer core, or seed, and methyl methacrylate (MMA) as the shell forming monomer.
Luiz Fernando Belchior Ribeiro, Odinei Hess Gonçalves, Cintia Marangoni, Günter Motz, Ricardo Antonio Francisco Machado   +4 more
doaj   +1 more source

Modelling and Simulation of a Batch Poly(Vinyl Chloride) Reactor

Chemical Engineering Transactions, 2013
A population balance model for batch suspension polymerization of vinyl chloride is presented. Break up into two equal volumes of droplets, binary aggregation and random mass exchanges between the colliding droplets are assumed, while the kinetic data of
A. Barkanyi, S. Nemeth, B.G. Lakatos
doaj   +1 more source

Preparation of a PVDF/PVDF-g-(PSSS-co-PAA) graft copolymerization-blending cation exchange material and effects of the synthesis method on the material structures and properties

eXPRESS Polymer Letters, 2021
In this study, a PVDF/PVDF-g-(PSSS-co-PAA) graft copolymerization-blending cation exchange material was synthesized with polyvinylidene fluoride (PVDF), sodium p-styrene sulfonate (SSS) and acrylic acid (AA) by the methods of solution polymerization and ...
S. W. Sun, X. L. Gao
doaj   +1 more source

Comparison of the Porous Structure of Polymeric Beads Obtained by Modified Suspension and Multi-Step Swelling Polymerizations

Adsorption Science & Technology, 2006
The porous structures of the polymeric beads obtained by modified suspension and multi-step swelling polymerizations were studied. A porous styrene–divinylbenzene copolymer (ST–DVB) was synthesized in the modified suspension polymerization.
Barbara Gawdzik, Małgorzata Maciejewska, Stanisław Pikus   +2 more
doaj   +1 more source

Modelagem da polimerização simultânea de estireno em suspensão e emulsão Modeling styrene simultaneous suspension and emulsion polymerization systems

Polímeros, 2004
Apesar dos processos de polimerização em suspensão e emulsão serem processos heterogêneos, cada um origina características peculiares para a distribuição de tamanho de partículas, distribuição de pesos moleculares, taxa de nucleação das partículas de ...
Marcelo K. Lenzi, Enrique L. Lima, José Carlos Pinto   +2 more
doaj   +1 more source

Uma revisão sobre os processos de polimerização em suspensão A review on suspension polymerization processes

Polímeros, 2007
Inúmeros processos podem ser utilizados para produção de materiais poliméricos. Cada processo apresenta características peculiares, que permitem produzir resinas com as mais variadas propriedades, visando a diferentes aplicações do material polimérico ...
Fabricio Machado, Enrique L. Lima, José Carlos Pinto   +2 more
doaj   +1 more source

The Dispersion Composition of Polymethylmethacrylate Suspensions and Molecular Weights of Polymers Obtained by Suspension Polymerization in the Presence of Acrylic Copolymers as Surfactants

Тонкие химические технологии, 2019
The dispersion composition of polymer suspensions and molecular weights of polymers obtained by suspension polymerization of MMA in the presence of polymer surfactants – methylmethacrylate and methacrylic acid copolymers – were studied.
I. A. Gritskova, O. A. Satskevich, E. S. Klyuzhin, A. I. L’vovskiy, A. V. Andreeva, N. S. Мukha, M. I. Haddaj, S. M. Levachev   +7 more
doaj   +1 more source

A Review on Polyacrylonitrile as an Effective and Economic Constituent of Adsorbents for Wastewater Treatment

Molecules, 2022
Water gets polluted due to the dumping of untreated industrial waste into bodies of water, particularly those containing heavy metals and dyes. Industrial water contains both inorganic and organic wastes.
Archana Gupta, Vishal Sharma, Pawan Kumar Mishra, Adam Ekielski   +3 more
doaj   +1 more source

Síntese e caracterização de esferas monodispersas de látex e sua utilização no preparo de filmes de cristais coloidais tridimensionais.

Eclética Química, 2018
Polystyrene latex spheres were obtained by free-emulsifier polymerization of styrene. Suspension was characterized by Photon Correlation Spectroscopy (PCS) and Transmission Electron Microscopy (TEM) and were observed to be monodisperse with sizes around ...
Mateus Geraldo Schiavetto, Roberto Bertholdo, Sidney José Lima Ribeiro, Younes Messaddeq   +3 more
doaj   +1 more source