Ž . Ž . Poly methylstyrene PMS latex particles in an emulsifier-free emulsion were first synthesized by using 2,29-azobisŽ . Ž . 2-amidinopropane dihydrochloride V-50 as an initiator. Purification of the latexes by dialysis was followed in Ž . order to remove residual monomer, initiator and electrolytes. The cationic poly methylstyrene latexes were then oxidized in the presence of t-butyl hydro...

The interactions of phentylacetylene and phenylacetylene-a-d1 with Si(100)-231 have been studied as a model system to mechanistically understand the adsorption of conjugated p-electron aromatic substitutions on Si(100)-231. Vibrational signatures show that phenylacetylene covalently binds to the surface through a @2 12#-like cycloaddition pathway between the external CwC and SivSi dimer, formin...

Molecularly imprinted polymers bearing atrazine transforming activity were prepared by using newly designed templates that are atrazine analogues attached with an allyl or a styryl group via a disulfide bond at the 6-position, methacrylic acid as a functional monomer and styrene/divinylbenzene as crosslinkers. After polymerization, the disulfide bond was reduced to remove the atrazine moiety fr...

Background: Volatile organic compounds (VOC) are considered as major environmental contaminants that have a harmful effect on human and ecosystem health, so much effort has been focused on their removal. The aim of this study was to investigate the removal efficiency of styrene by Zeolite Socony Mobil-5 (ZSM-5) after immobilization of nanoparticles of zinc oxide (ZnO) on it. Materials and Meth...

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...

The results of the analysis of blood and urine samples for styrene and its metabolites in 491 workers in a styrene polymerisation plant in the United States are reported. The levels of exposure to styrene were estimated to be less than 10 ppm, but nevertheless styrene and metabolites were detectable in more than 50% of workers in polymerisation jobs, within 4 h of exposure. Workers involved in ...

Well-controlled anionic polymerization of an initiator-functionalized monomer, p-(2,2'-diphenylethyl)styrene (DPES), was achieved for the first time. The polymerization was performed in a mixed solvent of cyclohexane and tetrahydrofuran (THF) at 40 °C with n-BuLi as initiator. When the volume ratio of cyclohexane to THF was 20, the anionic polymerization of DPES showed living polymerization cha...