Journal ArticleDOI
Preparation of polystyrene-block-(ethylene oxide)s and characterization of the products
TLDR
In this paper, block copolymers containing segments of poly(ethylene oxide) and polystyrene were synthesized, and the resulting polymeric peroxycarbamates were used as free radical initiators for vinyl polymerization.Abstract:
Block copolymers containing segments of poly(ethylene oxide) and polystyrene were synthesized. Dihydroxyl-terminated polyethers (PEG-4000 and PEG-20,000) were reacted with an aliphatic diisocyanate (3-isocyanatomethyl-3,5,5-trimethyl-cyclohexyl-isocyanate) and with an aliphatic hydroperoxide (t-butyl hydroperoxide). The resulting polymeric peroxycarbamates were used as free radical initiators for vinyl polymerization. Formation of block copolymers was illustrated by several characterization methods such as chemical and UV analysis, infrared spectroscopy, and DSC thermograms. Mechanical characterization of the copolymers was made on the basis of the stress—strain curves obtained from a mechanical testing instrument (Tensilon).read more
Citations
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Journal ArticleDOI
Synthesis of Amphiphilic PS-b-PEG-b-PS by Atom Transfer Radical Polymerization
Journal ArticleDOI
Molecular design, synthesis and properties of block and graft copolymers containing polyoxyethylene segments
Hong-Quan Xie,Dong Xie +1 more
TL;DR: In this article, the authors deal with recent progress including the molecular design, synthesis, purification, characterization and physical properties of seven types of multiphase copolymers of styrene (S) and ethylene oxide (EO).
OtherDOI
Peroxides and Peroxide Compounds, Organic Peroxides
Jose Sanchez,Terry N. Myers +1 more
TL;DR: In this paper, the physical and chemical properties, synthetic methods, and the principal commercial uses of organic peroxides of the following classes: hydroperoxides, dialkyl peroxide, α-oxygen-substituted hydroperoxide and dialkyyl peroxide compounds, ozonides, peroxyacids, diacyl peroxide compound, and alkyl compound.
Journal ArticleDOI
Synthesis, characterization and surface properties of amphiphilic polystyrene-b-polypropylene glycol block copolymers
TL;DR: In this paper, the PS-b-PPG block copolymers were prepared and contact angles of these Wlms with water drop were measured to examine hydrophilic/ hydrophobic behavior.
Journal ArticleDOI
Preparation of polystyrene-poly(ethylene glycol) diblock copolymer by ‘living’ free radical polymerisation
TL;DR: In this article, an amphiphilic diblock copolymer containing segments of polystyrene and monomethoxypoly(ethylene glycol) (PS-b-PEG) was synthesized by a novel method.