Results 101 to 110 of about 5,022 (153)

Synthesis of telechelic polyisobutylene

Polymer, 1993
Telechelic polyisobutylene with chlorine end-groups was made by cationic polymerization of isobutylene in methylene chloride with difunctional initiators (2,5-dimethoxy-2,5-dimethylhexane and 2,5-diacetyl-2,5-dimethylhexane). The structure of these initiators resembles that of polyisobutylene. BCl3 and TiCl4 were used as catalysts. The molecular weight
Walch, E., Walch, E., Gaymans, R.J.
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Lab-scale investigation of drag reduction for crude oil by oil-soluble polymers

Scientific Reports
This study investigates the drag reduction performance of oil-soluble polymers, specifically Polyisobutylene (PIB), in crude oil pipelines. The experiments were conducted using a flow-loop system to simulate turbulent flow conditions.
Kun Liu, Xiao Xiong, Xiaodong Dai, Yue Liang, Jinxin Gou, Zhensong Cheng, Guoxin Zhang, Yuan Lu, Jianhua Zhang   +8 more
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The mechanics of viscoelastic fluids Final report [PDF]

Low Reynolds number flow past small solid ...
Caswell, B.
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Anti-misting additives for jet fuels [PDF]

The ignition characteristics of sprays, created by wind shear action, of Jet-A fuel containing polyisobutylene additives wee examined over ranges of air velocities from 45 to 90 m/s and of fuel/air mass ratios of 0.20 to 8.0.
Grens, E. A., II, Williams, M. C.
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On the performance of finite journal bearings lubricated with micropolar fluids [PDF]

A study of the performance parameters for a journal bearing of finite length lubricated with micropolar fluids is undertaken. Results indicate that a significantly higher load carrying capacity than the Newtonian fluids may result depending on the size ...
Brewe, D. E., Khonsari, M. M.
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Controlled Ring-Opening Metathesis Polymerization with Polyisobutylene-Bound Pyridine-Ligated Ru(II) Catalysts

ACS Omega, 2016
Jakkrit Suriboot, Yue Hu, Thomas J. Malinski, Hassan S. Bazzi, David E. Bergbreiter   +4 more
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Chemically Structured Products: Simultaneous model-based design of process and assisting structured materials [PDF]

, 2008
Soni, Vipasha
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Amfifil polimer kotérhálók: egy újszerű nanoszerkezetű anyagcsoport [PDF]

, 2015
Bóta, Attila, Domján, Attila, Erdődi, Gábor, Fodor, Csaba, Haraszti, Márton, Iván, Béla, Kali, Gergely, Mezey, Péter, Németh, Péter, Pásztor, Szabolcs, Stumphauser, Tímea, Szabó, Ákos, Szanka, István, Süvegh, Károly, Wacha, András Ferenc   +14 more
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Synthesis and characterization of modified polyisobutylene-based dispersants from polyisobutylene succinimides

Polymer Bulletin, 2021
In this study, Alkenyl succinimides with different alkyl chain lengths were synthesized using polyisobutylene (PIB) with the molecular weights of 1000 and 1300, which displayed the best functional properties. The secondary amines found in b-Polyisobutylene succinimide (b-PIBSI) dispersants were prepared by attaching PIB chains to a polyamine core via ...
Sahar Amiri, Shahrnaz Mokhtari
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Calcification resistance of polyisobutylene and polyisobutylene‐based materials

Polymers for Advanced Technologies, 2019
Calcification of implanted biomaterials is highly undesirable and limits clinical applicability. Experiments were carried out to assess the calcification resistance of polyisobutylene (PIB), PIB‐based polyurethane (PIB‐PU), PIB‐PU reinforced with (CH3)3N+CH2CH2CH2NH2 I−‐modified montmorillonite (PIB‐PU/nc), PIB‐based polyurethane urea (PIB‐PUU), PIB‐PU
Nur Cicek Kekec, Mukrime Birgul Akolpoglu, Ugur Bozuyuk, Seda Kizilel, Nihan Nugay, Turgut Nugay, Joseph P. Kennedy   +6 more
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