Development of High-Performance Coconut Oil-Based Rigid Polyurethane-Urea Foam: A Novel Sequential Amidation and Prepolymerization Process [PDF]
ACS OmegaThe utilization of coconut diethanolamide (p-CDEA) as a substitute polyol for petroleum-based polyol in fully biobased rigid polyurethane-urea foam (RPUAF) faces challenges due to its short chain and limited cross-linking capability.
Louell Nikki A. Hipulan +8 more
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Laboratory substantiation of the efficiency of nanocomposite material prepolymerization heating
Эндодонтия Today, 2020 Aim. To evaluate the effectiveness of prepolymerization heating of composite filling materials.Materials and methods. For the study, two composite filling materials Enamel plus HRi® dentin and enamel were used. During the tests, the coefficient of linear
Z. S. Khabadze
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Effects of Prepolymerization, Temperature, and Hydrogen Concentration on Kinetics of Propylene Bulk Polymerization Using a Commercial Ziegler-Natta Catalyst [PDF]
Advances in Polymer Technology, 2022 The effects of prepolymerization, temperature, and hydrogen concentration on propylene bulk polymerization with a commercial Ziegler-Natta catalyst were investigated, and the apparent polymerization rate constants were estimated by varying reaction ...
Huiyue Liu +4 more
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Prepolymerization of Lacquer Sap under Pure Oxygen Atmosphere and Its Effects on the Properties of Lacquer Film [PDF]
International Journal of Polymer Science, 2015 A series of lacquer saps were prepared by prepolymerization under oxygen atmosphere. The prepolymerization process was investigated by GPC, UV-Vis, FT-IR, NMR, and microscope. The results showed that the polymerization of urushiol monomer was accelerated.
Jianhong Yang +4 more
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Impact of Prepolymerization Monomer on Polymerization and Properties of LLDPE [PDF]
Journal of Petrochemical Engineering, 2022 One of the methods of synthesis of linear low-density polyethylene is the use of pre-polymerization method. In this research, propylene, 1-butene and ethylene were used as prepolymers at 35 °C.
S Nikazar S Nikazar +5 more
semanticscholar +3 more sources
Energy Reports, 2022 The rational design and synthesis of environmental, low-cost and eco-friendly renewable biomass-based carbons are highly desired for the development of high-performance supercapacitors.
Kunquan Li, Bingkun Min, Boyu Li
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Simulation of imprinted emulsion prepolymerization mixtures [PDF]
Polymer Journal, 2015 Procedures for implementing molecular dynamic simulations in preproduction evaluation and optimization of miniemulsion systems in polymeric material design has been investigated and evaluated in the production of ligand-selective synthetic receptor mimic-containing polymeric particles targeting the ligand bisphenol A.
Gustaf D. Olsson +5 more
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An Experimental Investigation of the Impact of Gas Phase Prepolymerization of Propylene
Macromolecular Reaction Engineering, 2020 AbstractA systematic investigation is carried out on the gas phase of propylene during the initial instants of polymerization. The results confirm the positive impact of small amounts of mineral oil on the initial reaction rate and morphology. It is shown that polymerizing under conditions of mild temperature and pressure alone are not enough to ...
Yue Yu, Timothy F. L. McKenna
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Effect of prepolymerization on propylene polymerization [PDF]
Journal of Applied Polymer Science, 2009 AbstractPolymerization of propylene was performed using MgCl2. EtOH.TiCl4.ID.TEA.ED catalyst system in hexane, where internal donor (ID) was an organic diester and external donor (ED) was a silane compound and also triethyl aluminum (TEA) as activator.
Majid Monji +3 more
semanticscholar +3 more sources
Study on the Effects of Temperature, Time and the Policy of Prepolymerization on Particle Morphology in Propylene Slurry Polymerization with Heterogeneous Ziegler-Natta Catalysts [PDF]
علوم و تکنولوژی پلیمر, 2007 The effects of temperature, time and the strategy of prepolymerization were studied on the morphology of polypropylene particles. propylene polymerization was carried out in slurry phase using 4th generation of Ziegler-Natta Catalyst, cyclohexylmethyl ...
G. Pircheraghi +2 more
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