Results 41 to 50 of about 100,451 (291)

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

Insertion of Degradable Thioester Linkages into Styrene and Methacrylate Polymers [PDF]

, 2022
The thionolactone 3,3-dimethyl-2,3-dihydro-5H-benzo[e][1,4]dioxepine-5-thione (DBT) is shown to homopolymerize and, for the first time, copolymerize with styrene and methacrylates, introducing degradable thioester backbone functionality.
Nathaniel, Bingham, Peter, Roth, Eleanor, Dodd, Matthew, Rix, Samuel, Higgs, Simon, Coles   +5 more
core   +2 more sources

Enabling Highly (R)-Enantioselective Epoxidation of Styrene by Engineering Unique Non-Natural P450 Peroxygenases [PDF]

, 2020
Unlike the excellent (S)-enantioselective epoxidation of styrene performed by natural styrene monooxygenase (ee >99%), the (R)-enantioselective epoxidation of styrene has not yet achieved a comparable efficiency using natural or engineered oxidative ...
Zhiqi, Cong, Nana, Ma, Fuquan, Yao, Longyi, Jin, Jie, Chen, Panxia, Zhao, Jingfei, Chen, Chuanfei, Liu, Lishan, Yao, Xiangquan, Qin   +9 more
core   +1 more source

Synthesis and styrene copolymerization of ring-disubstituted 2-methoxyethyl phenylcyanoacrylates [PDF]

, 2022
Novel ring-disubstituted 2-methoxyethyl phenylcyanoacrylates, RPhCH=C(CN)CO2CH2CH2OCH3 (where R is 4-methoxy-2-methyl, 4-methoxy-3-methyl, 3-ethoxy-4-methoxy, 4-ethoxy-3-methoxy, 3,4-dibenzyloxy, 3-benzyloxy-4-methoxy, 4-benzyloxy-3-methoxy, 2-bromo-5 ...
Imaad , Allahrakha, Sabah M. , Sulaiman, Jacqueline C. , Calderon, Sid , Sarfaraz, Stephanie L. , Taiberg, Sara M. , Rocus, William S. , Schjerven, Joanna L. , Torres, Gregory B., Kharas, Justin , Bodner, Nadia , Quad, Claire M. , Sagartz, Adam W.T. , Steffeck, Skyler M. , Thompson, Abdul , Rafay, Deanna M. , Briones, Vikram , Bhagavat   +16 more
core   +1 more source

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

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

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

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

New AI‐Assisted Approach for Expanding the Solution Space: Application to Lattice Structure Design

Advanced Engineering Materials, EarlyView.
This work introduces an innovative framework for designing structured materials by ex panding the design space through reparameterization of qualitative variables into continuous structural descriptors. Combined with machine‐learning‐based prediction and multi‐objective optimization, the approach enables the discovery of novel lattice architectures ...
G. H. Gahimbare, Y. Beideler, D. Chune, R. De Guio, T. Roland, H. Chibane   +5 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