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Polyolefin graft copolymers via living polymerization techniques: Preparation of poly(n‐butyl acrylate)‐graft‐polyethylene through the combination of Pd‐mediated living olefin polymerization and atom transfer radical polymerization
Wiley - Tập 40 Số 16 - Trang 2736-2749 - 2002
AbstractPoly(n‐butyl acrylate)‐graft‐branched polyethylene was successfully
prepared by the combination of two living polymerization techniques. First, a
branched polyethylene macromonomer with a methacrylate‐functionalized end group
was prepared by Pd‐mediated living olefin polymerization. The macromonomer was
then copolymerized with n‐butyl acrylate by atom transfer radical
polymerization. Gel p...
Preparation of polyethylene block copolymers by a combination of postmetallocene catalysis of ethylene polymerization and atom transfer radical polymerization
Wiley - Tập 42 Số 3 - Trang 496-504 - 2004
AbstractThe synthesis of block copolymers consisting of a polyethylene segment
and either a poly(meth)acrylate or polystyrene segment was accomplished through
the combination of postmetallocene‐mediated ethylene polymerization and
subsequent atom transfer radical polymerization. A vinyl‐terminated polyethylene
(number‐average molecular weight = 1800, weight‐average molecular
weight/number‐average ...
Biological–synthetic hybrid block copolymers: Combining the best from two worlds
Wiley - Tập 43 Số 1 - Trang 1-17 - 2005
AbstractAlthough biopolymers and synthetic polymers share many common features,
each of these two classes of materials is also characterized by a distinct and
very specific set of advantages and disadvantages. Combining biopolymer elements
with synthetic polymers into a single macromolecular conjugate is an interesting
strategy for synergetically merging the properties of the individual components...
Solvent‐free polymerization of citric acid and D ‐sorbitol
Wiley - Tập 44 Số 14 - Trang 4259-4267 - 2006
AbstractCopolymers of citric acid and D‐sorbitol were synthesized with a
solvent‐free vacuum‐oven synthesis with molar ratios of citric acid to
D‐sorbitol ranging from 1/1 to 6/1. The extent of the reaction was followed by
the monitoring of the residual acid content of the system. As expected, the
reaction occurred much more rapidly at 150 than at 110 °C. The Fourier transform
infrared (FTIR) spec...
Crosslinked polystyrene with improved mechanical properties
Wiley - Tập 31 Số 9 - Trang 2305-2311 - 1993
AbstractThe synthesis of some divinyl monomers—bis(vinylphenyl)ethane (2),
bis(vinylbenzyloxy)hexane (3a), and bis(vinylbenzyloxy)dodecane (3b) is
reported. Copolymers of the new monomers and styrene were evaluated as an
alternative to divinylbenzene‐crosslinked polymers for use as matrices and
absorbents. The mechanical properties and the amount of residual double bonds in
the copolymers were com...
Synthesis and characterization of saturated and unsaturated polysulfide polymers and their thermal degradation processes investigated by flash pyrolysis–gas chromatography/mass spectrometry
Wiley - Tập 43 Số 3 - Trang 638-649 - 2005
AbstractThe synthesis of polysulfide polymers with unsaturated and saturated
units in the backbone and their characterization by Fourier transform infrared,
NMR, gel permeation chromatography, thermogravimetric analysis, and differential
scanning calorimetry are reported. This is the first report on an analysis of
the thermal degradation of an unsaturated polysulfide polymer [poly(2‐butene
sulfide...
Synthesis and characterization of perfluorinated arylenevinylene polymers
Wiley - Tập 48 Số 2 - Trang 285-291 - 2010
AbstractFully fluorinated arylenevinylene polymers have been synthesized via a
methodology based on the Stille cross‐coupling reaction and characterized by
FTIR spectroscopy and MALDI‐TOF mass spectrometry. Investigation of thin film
properties by cyclic voltammetry and ellipsometry shows that complete
substitution of hydrogen atoms with fluorine atoms on the conjugated backbone of
the poly(arylen...
Hydrolyzable poly(ester‐urethane) networks from L ‐lysine diisocyanate and D ,L ‐lactide/ϵ‐caprolactone homo‐ and copolyester triols
Wiley - Tập 32 Số 12 - Trang 2345-2363 - 1994
AbstractBioabsorbable poly(ester‐urethane) networks were synthesized from ethyl
2,6‐diisocyanatohexanoate (L‐lysine diisocyanate) (LDI) and a series of
polyester triols. LDI was synthesized by refluxing L‐lysine monohydrochloride
with ethanol to form the ester, which was subsequently refluxed with
1,1,1,3,3,3‐hexamethyldisilazane to yield a silazane‐protected intermediate.
This product was then ph...
Novel polymer monolith prepared from a water‐soluble crosslinking agent
Wiley - Tập 45 Số 17 - Trang 3811-3817 - 2007
AbstractIn this study, we described the fundamental properties of novel polymer
monoliths that were prepared from a water‐soluble crosslinking agent. Each
monolith was evaluated by scanning electron microscope (SEM) and scanning probe
microscope (SPM) to observe the monolithic structure, and the polymer films that
were prepared from several monomers were evaluated by the contact angle of
water. As...
Photoswitchable architectural polymer: Toward azo‐based polyamidoamine side‐chain dendritic polyester
Wiley - Tập 39 Số 23 - Trang 4182-4188 - 2001
AbstractA versatile approach to the synthesis of novel polyamidoamine (PAMAM)
side‐chain dendritic polyester (SCDPE) possessing azobenzene motifs in the
polymeric core is described and displayed reversible cis–trans (E/Z)
isomerization upon exposure to UV light. A polymerization reaction was conducted
in solution using ester‐terminated PAMAM dendritic diol (1a, G 3.5) and
azobenzene dicarboxylic a...
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