Results 71 to 80 of about 7,263 (192)

The Crystallization Kinetics in Semicrystalline Nanocomposites [PDF]

, 2010
Růst krystalů zásadně ovlivňuje morfologii a tím také mechanické vlastnosti semikrystalických polymerů. Tato PhD práce přináší alternativní pohled na popis kinetiky krystalizace v polyolefinech plněných slabě interagujícími částicemi.
Fiore, Kateřina
core  

UHMWPE/SBA-15 nanocomposites synthesized by in situ polymerization [PDF]

, 2016
Different nanocomposites have been attained by in situ polymerization based on ultra-high molecular weight polyethylene (UHMWPE) and mesoporous SBA-15, this silica being used for immobilization of the FI catalyst bis [N-(3-tert-butylsalicylidene)-2,3,4,
Adewole, Amoli, Ana E. Ferreira, Baier, Bakshi, Beck, Beloshenko, Bento, Bryliakov, Campos, Campos, Campos, Carlini, Cerrada, Cerrada, Chen, Cui, Cybo, Dangsheng, Deng, Dong, Dorigato, Díez-Pascual, Ernesto Pérez, Guo, Henri Cramail, Ianuzzi, Ivanchev, Ivanchev, Iwashita, João P. Lourenço, Kaminsky, Katti, Klimova, Kresge, Kurek, Kurtz, M. Rosário Ribeiro, Makio, Makio, Maria L. Cerrada, Mitani, Oliver, Olmos, Panchenko, Park, Quinn, Ribeiro, Sandaroos, Severn, Sinfrônio, Spiegelberg, Sánchez, Talebi, Tjong, Vicente Lorenzo, Wypych, Xu, Zhang, Zhao, Zohuri   +60 more
core   +3 more sources

An Intriguing Array of Extrudate Patterns in Long‐Chain Branched Polymers During Extrusion

Macromolecular Materials and Engineering, 2023
The present study highlights a range of surface and volume extrudate patterns that can be detected during the extrusion flow of long‐chain branched polymers.
Sajjad Pashazadeh, Alexandra Aulova, Christos K. Georgantopoulos, Marko Bek, Iakovos Vittorias, Ingo F.C. Naue, Manfred Wilhelm, Roland Kádár   +7 more
doaj   +1 more source

Бимодальные технологии получения полиэтилена 3-го поколения (обзор) [PDF]

, 2011
In paper the survey concerning reception of third generation polyolefins – bimodal polyethylenes is made. The basic licensed technologies of reception of bimodal polyethylenes on one-and two-reactor to circuit designs is resulted, features of their ...
Лебедев, Владимир Владимирович
core  

A method for the visual detection of holes in thin polymeric films [PDF]

, 1970
Back-lighting polymeric film with polarized light from a polarizing plate and viewing it through a second plate cross-polarized to the back-lighting provides visual contrast between the flaw and the transparent ...
Von Volkli, A. D., Wiedekamp, K. E.
core   +1 more source

Caracterização de polietilenos lineares de baixa densidade I.: determinação do teor de ramificação por métodos espectroscópicos Linear low density polyethylene characterization - I.: spectroscopic methods for comonomer content determination

Polímeros, 2005
Os polietilenos lineares de baixa densidade (LLDPE) apresentam propriedades variando amplamente em função da concentração e do tipo de comonômero utilizado na copolimerização, além do tipo de catalisador.
Antonio C. Quental, Lilian S. Hanamoto, Maria I. Felisberti   +2 more
doaj   +1 more source

Photo- and thermal-oxidation of polyethylene : Comparison of mechanisms and influence of unsaturation content [PDF]

, 2013
The behaviour of polyethylene with different contents in vinyl and t-vinylene groups have been studied by photooxidation with λ>300 nm light or by thermooxidation at a temperature of 100 °C.
Földes, Enikő, Gardette, Jean-Luc, Gardette, Mélanie, Janecska, Tünde, Perthue, Anthony, Pukánszky, Béla, Therias, Sandrine   +6 more
core   +3 more sources

Morphology Development in Model Polyethylene via Two-Dimensional Correlation Analysis [PDF]

, 2011
Two-dimensional (2D) correlation analysis is applied to synchrotron X-ray scattering data to characterize morphological regimes during nonisothermal crystallization of a model ethylene copolymer (hydrogenated polybutadiene, HPBD).
Kornfield, Julia A., Lohse, David J., Smirnova, Diana S.   +2 more
core  

Ringed spherulitic and undulated textures in the nematic phase of a mixture of trans-4-hexylcyclohexanecarboxylic and benzoic acids

, 2009
We present a polarising optical microscopy study of a liquid-crystal mixture of trans-4-hexylcyclohexanecarboxylic acid (C6) and benzoic acid. Both materials have carboxylic groups that can form dimers through hydrogen bonding. The mixture is nematic and
Sparavigna, Amelia Carolina
core   +1 more source

Predicting LDPE/HDPE blend composition by CARS-PLS regression and confocal Raman spectroscopy

Polímeros, 2019
Industries and the scientific community currently focus on creating new ways to recycle and to reuse polymer waste that leads to serious socio-environmental risks.
Daniel José da Silva, Hélio Wiebeck
doaj   +1 more source