نتایج جستجو برای: styrene bulk polymerization

تعداد نتایج: 112130  

Journal: :iranian journal of chemistry and chemical engineering (ijcce) 2013
padideh ghafoor mohseni mohammad shahrokhi hossein abedini

in this paper, optimization and control of a tubular reactor for thermal bulk post-polymerization of styrene have been investigated. by using the reactor mathematical model, static and dynamic simulations are carried out. based on an objective function including polymer conversion and polydispersity, reactor optimal temperature profile has been obtained. in the absence of model mismatch, desire...

Journal: :Journal of Polymer Science: Polymer Chemistry Edition 1976

Journal: :JOURNAL OF CHEMICAL ENGINEERING OF JAPAN 1975

Journal: :JOURNAL OF CHEMICAL ENGINEERING OF JAPAN 1986

2006
TAMER UYAR AHMED EL-SHAFEI XINGWU WANG JALE HACALOGLU ALAN E. TONELLI

The solid complex of guest styrene included inside the channels of host c-cyclodextrin (styrene/c-CDchannel-IC) was formed in order to perform polymerization of styrene in a confined environment (c-CD channels). The experimental molar ratio of styrene to c-CD in styrene/c-CDchannel-IC was found to be 2:1, which is consistent with molecular modeling studies, utilizing Quantum Mechanics PM3 param...

Journal: :American Journal of Polymer Science and Technology 2017

Journal: :Chemical communications 2016
Alison R Schultz Gregory B Fahs Chainika Jangu Mingtao Chen Robert B Moore Timothy E Long

Living anionic polymerization of 4-diphenylphosphino styrene (DPPS) achieved well-defined homopolymers, poly(DPPS-b-S) styrenic block copolymers, and poly(I-b-DPPS) diene-based diblock copolymers with predictable molecular weights and narrow polydispersities. In situ FTIR spectroscopy monitored the anionic polymerization of DPPS and tracked monomer consumption for kinetic analysis. Post-alkylat...

2009
Durairaj Baskaran Axel H.E. Müller

The concept of anionic polymerization was first developed by Ziegler and Schlenk in early 1910. Their pioneering work on the polymerization of diene initiated with sodium metal set the stage for the use of alkali metal containing aromatic hydrocarbon complexes as initiators for various α-olefins. In 1939, Scott and coworkers used for the first time the alkali metal complexes of aromatic hydroca...

2012
Vivek Mishra Rajesh Kumar RAJESH KUMAR

Free radical polymerization is one of the most widely employed polymerization techniques. This technique is applied to prepare latexes to be used in paints, high molecular weight poly (methyl methacrylate) for safety glass (Plexiglas), or foamed poly (styrene) to be applied in coffee cups. Some advantages of radical polymerizations, with respect to other techniques, are the relative insensitivi...

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