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
Krzysztof Matyjaszewski
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 ...... hiện toàn bộ
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
Larissa R. Fonseca, James A. Bergman, Michael R. Kessler, Samy A. Madbouly, Benedito dos Santos Lima Neto
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 wit...... hiện toàn bộ
In‐situ Synthesis and Characterization of Polyamide 6/POSS Nanocomposites
Macromolecular Symposia - Tập 249-250 Số 1 - Trang 295-302 - 2007
Subramaniyan Ramasundaram, Kap Jin Kim
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 inc...... hiện toàn bộ
Electrochromic Performance of Nickel Oxide Thin Film: Synthesis via Electrodeposition Technique
Macromolecular Symposia - Tập 361 Số 1 - Trang 47-50 - 2016
Vijay V. Kondalkar, Pallavi B. Patil, Rahul M. Mane, P.S. Patil, Sipra Choudhury, Popatrao N. Bhosal
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 m...... hiện toàn bộ
Modification of Recycled Polymer Blends with Activated Natural Zeolite
Macromolecular Symposia - Tập 217 Số 1 - Trang 391-400 - 2004
Strashimir Djoumaliisky, Peter Zipper
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 an...... hiện toàn bộ
Application of network models to physical gels
Macromolecular Symposia - Tập 93 Số 1 - Trang 187-194 - 1995
Allan Clark, Katsuyoshi Nishinari, Simon B. Ross‐Murphy, Mineo Watase
AbstractThere are a number of physical models which describe properties of physical gels, such as the time dependence of viscoelastic properties, stress‐strain dependence, and the concentration dependence of gel(ation) time and of gel modulus. One of the latter, due to ourselves, has been useful for fitting data for a number of systems including PVC and gelatin gel...... hiện toàn bộ
Waxy Maize Starch Nanocrystals as Filler in Natural Rubber
Macromolecular Symposia - Tập 233 Số 1 - Trang 132-136 - 2006
Hélène Angellier‐Coussy, Sonia Molina‐Boisseau, Alain Dufresne
AbstractStarch nanocrystals obtained from acid hydrolysis of waxy maize starch granules consist in crystalline nanoplatelets about 6–8 nm thick with a length of 20–40 nm and a width of 15–30 nm. New nanocomposite materials, i.e. natural rubber (NR) filled with waxy maize starch nanocrystals were processed by casting. Dynamic mechanical analysis has shown that starc...... hiện toàn bộ
Routes to Rubber Nanocomposites
Macromolecular Symposia - Tập 291-292 Số 1 - Trang 95-105 - 2010
Amit Das, Klaus Werner Stöckelhuber, René Jurk, Gert Heinrich
AbstractThis paper presents recent developments in rubber nanocomposites from the laboratory of the authors. In particular, the preparation of rubber nanocomposites with improved performance from layered silicates, carbon nanotubes and in situ sol‐gel derived silica nanoparticles incorporated in different elastomers and by different metho...... hiện toàn bộ
iPP Based Nanocomposites Filled with Calcium Carbonate Nanoparticles: Structure/Properties Relationships
Macromolecular Symposia - Tập 234 Số 1 - Trang 156-162 - 2006
Maurizio Avella, Simona Cosco, Maria Laura Di Lorenzo, Emilia Di Pace, Maria Emanuela Errico, Gennaro Gentile
AbstractIsotactic polypropylene (iPP) based nanocomposites filled with calcium carbonate nanoparticles (CaCO3) were prepared by melt mixing and structure‐properties relationships of the nanomaterials were studied. Elongated CaCO3 nanopowders coated with two different coating agents, polypropylene‐maleic anhydride graft copo...... hiện toàn bộ
Comparative Properties of Thermoplastic Polyurethane Adhesive Filled with Natural or Precipitated Calcium Carbonate
Macromolecular Symposia - Tập 301 Số 1 - Trang 63-72 - 2011
Jessica Donate‐Robles, José Miguel Martín‐Martínez
AbstractSummary: The rheological, mechanical and adhesion properties of thermoplastic polyurethane adhesive (TPU) containing natural ultramicronized or precipitated nanometric calcium carbonate filler were compared. Precipitated calcium carbonate addition did not noticeably improve the rheological properties of filled TPU with respect to the ...... hiện toàn bộ
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