Macromolecular Symposia
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Transformation of “living” carbocationic and other polymerizations to controlled/“living” radical polymerization
Macromolecular Symposia - Tập 132 Số 1 - Trang 85-101 - 1998
AbstractTransformation of “living” carbocationic polymerization of styrene and
isobutene to controlled atom transfer radical polymerization (ATRP) is described
and formation of the corresponding AB and ABA block copolymers with styrene
(St), methyl methacrylate (MMA, methyl acrylate (MA) and isobornyl acrylate
(IBA) was demonstrated. A similar approach was applied to the cationic ring
opening poly...
Effect of the Organoclay Structure on Morphology and Rheological Response of PBT Nanocomposites
Macromolecular Symposia - Tập 228 Số 1 - Trang 125-138 - 2005
AbstractIn this paper the effect of different organoclays on the structure and
the rheological properties of poly(butyleneterephtalate)–clay nanocomposites
produced by melt compounding was investigated. The study was carried out using
as nanometric fillers four commercial montmorillonites, treated with different
organic modifiers and having similar interlayer spacing and organo‐modifier
concentrat...
Innovative Poly(Butylene Terephthalate) Based Nanocomposites: a Preliminary Investigation
Macromolecular Symposia - Tập 247 Số 1 - Trang 120-128 - 2007
AbstractA polymer‐clay nanocomposite based on Poly(butyleneterephthalate) (PBT)
and an innovative organoclay has been synthesized via intercalation of
Bis(hydroxyethyl terephthalate) (BHET) in Na‐Montmorillonite layers. Chemical
and physical properties of this nanocomposite have been studied in comparison to
other PBT/nanocomposites based on two commercial organoclay: Cloisite 25A and
Somasif MEE....
Water Soluble Dextran‐Polyacrylamide Graft Copolymers for Capturing Metal Ions
Macromolecular Symposia - Tập 235 Số 1 - Trang 201-205 - 2006
AbstractSummary: The graft copolymers of Polyacrylamide (PAA) to Dextran
(Mw = 20000 and Mw = 70000) have been synthesised by ceric‐ion‐reduced redox
initiation method. Molecular characteristic of graft copolymers were determined
from light scattering, SEC, and viscometry data. It was established that the
increase of molecular weight of Dextran component up to 3.5 times do not
influence essentiall...
Self‐Metathesis of 10‐Undecen‐1‐Ol with Ru‐Amine‐Based Complex for Preparing the Soft Segment and Chain Extender of Novel Castor Oil‐Based Polyurethanes
Macromolecular Symposia - Tập 368 Số 1 - Trang 30-39 - 2016
SummarySelf‐metathesis of the terminal olefin in 10‐undecen‐1‐ol was conducted
in the presence of [RuCl2(PPh3)2(perhydroazepine)] complex and ethyl
diazoacetate (EDA) to form a bioderived diol. The diol was utilized as soft
segment and chain extender in polyurethane reactions with castor oil. Polymers
with high Mw and Mn values and PDI's of 2 and 3 were obtained. The viscoelastic
material paramete...
Synthesis and Characterization of Sulfonated‐ Fluorinated, Hydrophilic‐Hydrophobic Multiblock Copolymers for Proton Exchange Membranes
Macromolecular Symposia - Tập 245-246 Số 1 - Trang 439-449 - 2006
AbstractNanophase separated ionic‐hydrophobic block copolymers may be more
suitable as proton exchange membranes than random copolymers. A series of
multiblock copolymers, composed of alternating segments of fully disulfonated
poly(arylene ether sulfone) and highly fluorinated poly(arylene ether sulfone),
were synthesized from hydrophilic and hydrophobic telechelic oligomers having a
variation of ...
In‐situ Synthesis and Characterization of Polyamide 6/POSS Nanocomposites
Macromolecular Symposia - Tập 249-250 Số 1 - Trang 295-302 - 2007
AbstractThe nanocomposites of polyamide 6 (PA6) and polyhedral oligomeric
silsesquioxane (POSS) containing primary and secondary amino groups were
synthesized through in‐situ polymerization. The chemical structure of the
PA6/POSS nanocomposites was characterized with FT‐IR and 1H‐NMR spectroscopies.
The solution viscosity results showed the increase in intrinsic viscosity with
increasing POSS load...
Polymer Based Nanocomposites with PhenethylPOSS as Nanofiller Investigated by Dielectric Spectroscopy and Gas Transport Measurements
Macromolecular Symposia - Tập 267 Số 1 - Trang 69-73 - 2008
AbstractPolyhedral oligomeric silsesquioxane with phenethyl substituents
(PhenethylPOSS) as nanofiller was incorporated within Poly(bisphenol A
carbonate) (PBAC) as matrix. Dielectric spectroscopy proved an almost complete
miscibility of PhenethylPOSS up to 7 wt. %. At higher concentrations phase
separation yields composites with a PBAC‐rich matrix and POSS‐rich domains which
posses well shaped in...
Electrochromic Performance of Nickel Oxide Thin Film: Synthesis via Electrodeposition Technique
Macromolecular Symposia - Tập 361 Số 1 - Trang 47-50 - 2016
SummaryNanocrystalline Nickel oxide (NiO) thin films were electrochemically
deposited onto ITO substrate at room temperature. In order to examine the
optical absorption, crystal structure and surface morphology of deposited NiO
thin films were characterized by means of UV–vis spectrophotometer, X‐ray
diffraction (XRD) and scanning electron microscopy (SEM). The electrochromic
(EC) performance of N...
Modification of Recycled Polymer Blends with Activated Natural Zeolite
Macromolecular Symposia - Tập 217 Số 1 - Trang 391-400 - 2004
AbstractThe growing interest in the natural zeolite is based on some specific
peculiarities of its structure, which after dehydration enables adsorption
processes of some polymer molecules and/or segments to take place on the zeolite
surface. The main goal of the study is to investigate the effect of dehydrated
zeolite on the flow behavior, mechanical properties and morphology of immiscible
blends...
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