Results 21 to 30 of about 42,759 (257)

Radical Polymerization of Styrene Dimer and Radical Copolymerizations of Styrene Dimer with Styrene

KOBUNSHI RONBUNSHU, 2009
ポリスチレンの熱分解で生じるスチレン二量体(2,4-ジフェニル-1-ブテン；SD)のラジカル重合とスチレン(St)とのラジカル共重合を，塊状重合の条件下で検討した．SD の単独重合においては，SD の嵩高い α 置換基による立体障害の影響により SD の付加が妨げられ，重合率は低く，生成物の分子量も 1000 程度と低分子量体であった．SD と St とのラジカル共重合においては，SD と St ともに消費され，分子量が約 15000 の SD と St からなる高分子量体コポリマーが生成した．DSC により測定した SD を約 30 mol%含むコポリマーのガラス転移温度(Tg)は約 130℃ であり，ポリスチレンの Tg よりもかなり高いことがわかった．
OHARA, Masayuki, HASHIMOTO, Tamotsu, URUSHISAKI, Michio, SAKAGUCHI, Toshikazu, SAWAGUCHI, Takashi, SASAKI, Daisuke   +5 more
openaire   +2 more sources

Effects of Molecular Iodine and 4-tert-Butylcatechol Radical Inhibitor on the Radical Polymerization of Styrene [PDF]

علوم و تکنولوژی پلیمر, 2017
The presence of molecular iodine was studied in relation the molecular weight and molecular weight distribution of polystyrene, produced by radical poly merization.
Mojtaba Bozorg, Mahdi Abdollahi, Mohammad Ali Semsarzadeh   +2 more
doaj   +1 more source

Efficient Palladium-Catalyzed Synthesis of 2-Aryl Propionic Acids

Molecules, 2020
A flexible two-step, one-pot procedure was developed to synthesize 2-aryl propionic acids including the anti-inflammatory drugs naproxen and flurbiprofen.
Helfried Neumann, Alexey G. Sergeev, Anke Spannenberg, Matthias Beller   +3 more
doaj   +1 more source

Synthesis and application of Fe3O4/PANIL nanocomposite as efficient adsorbent in the removal of styrene from waste water: Optimizing and modelling the process [PDF]

شیمی کاربردی روز, 2020
In this study, the application of adsorption process in the treatment of wastewater containing styrene has been evaluated and for optimizing process conditions, the surface response method (RSM) has been used.
ali jalalifar, Vahid Zare-Shahabadi, Soheil Sayyahi   +2 more
doaj   +1 more source

Olefin–Styrene Copolymers [PDF]

Polymers, 2016
In this review are reported some of the most relevant achievements in the chemistry of the ethylene–styrene copolymerization and in the characterization of the copolymer materials. Focus is put on the relationship between the structure of the catalyst and that of the obtained copolymer.
GALDI, NUNZIA, BUONERBA, ANTONIO, OLIVA, Leone   +2 more
openaire   +2 more sources

Deproteinized Natural Rubber Grafted with Polyacrylonitrile (PAN)/Polystirene (PS) and Degradation of its Mechanical Properties by Dimethyl Ether

International Journal of Technology, 2020
Dimethyl ether (DME) is a clean fuel that has moderate polarity, swells easily, and dissolves organic compounds. It has the ability to attack some sealing materials and plastic components because of its low viscosity. The modification of deproteinized
Tuti Indah Sari, Asep Handaya Saputra, Setijo Bismo, Dadi R. Maspanger   +3 more
doaj   +1 more source

Additive Manufacturing of Continuous Fibre Reinforced Composites: Process, Characterisation, Modelling, and Sustainability

Advanced Engineering Materials, EarlyView.
Additive manufacturing provides precise control over the placement of continuous fibres within polymer matrices, enabling customised mechanical performance in composite components. This article explores processing strategies, mechanical testing, and modelling approaches for additive manufactured continuous fibre‐reinforced composites.
Cherian Thomas, Amir Hosein Sakhaei
wiley   +1 more source

Synthesis, Characterization, and Application of Poly(Styrene-Co-Glycidyl Methacrylate) as Reactive Diluents to Epoxy Resin

International Journal of Technology
Anticorrosion coatings are specialized products designed to protect metal surfaces from costly and dangerous corrosion, acting as barriers against corrosive organisms.
Ainakulova Dana Tulegenkyzy, Puteri Sri Melor Megat-Yusoff, Khaldun Mohammad Al Azzam, Bekbayeva Lyazzat Kairatovna, Arpit Goyal, Ganjian Eshmaiel, El-sayed Negim, Moshera Samy, Balasubramani Ravindran   +8 more
doaj   +1 more source

Optimization of the Production of Rubber Compounds Using Mathematical Models

Advanced Engineering Materials, EarlyView.
Rubber compounds were mixed in a batch internal mixer, and symbolic regression was used to derive mathematical models linking recipe and process parameters to ram path, torque, and mixing quality (incorporation, dispersion, distribution). Subsequent optimization with evolutionary algorithms identified operating conditions that reduce specific energy ...
Anke Bardehle, Andreas Limper, Ulrich Giese, Carlos Lucke, Mario Beiner, Christoph Gögelein, Lisa Leuchtenberger‐Engel, Christian Hopmann   +7 more
wiley   +1 more source

The Role of Sodium Lauryl Sulfate on the Film Properties of Styrene-Butyl Acrylate-Acrylic Acid Copolymer Latex

Sakarya Üniversitesi Fen Bilimleri Enstitüsü Dergisi, 2020
In this study, the concentration effect of sodium lauryl sulfate (SLS) as a surfactant in the synthesis of styrene/acrylic acid/butyl acrylate copolymer (SAC) latex particles via seeded emulsion polymerization technique was investigated.
Bilge Eren, Yasemin Solmaz
doaj   +1 more source