Molecular Weight Distribution Control for Polymerization Processes Based on the Moment-Generating Function [PDF]
Entropy, 2022 The molecular weight distribution is an important factor that affects the properties of polymers. A control algorithm based on the moment-generating function was proposed to regulate the molecular weight distribution for polymerization processes in this ...
Jianhua Zhang, Jinzhu Pu, Mifeng Ren
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Regulation of molecular weight, molecular weight distribution and branching distribution in polyethylene, produced by supported catalysts bearing bis(imino)pyridyl Fe(II) and N,N-α-diimine Ni(II) complexes [PDF]
Polyolefins Journal, 2022 For preparation of highly active supported catalyst with bis(imino)pyridyl Fe(II) complexes (Fe1, Fe2) and N,N-α-diimine complex of Ni (Ni3), silica modified with alumina (SiO2 (Al)) was used as a support.
Nina Semikolenova +3 more
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Study of the Molecular-Weight Distribution of Binder Pitches for Carbon Blocks [PDF]
ACS Omega, 2021 Jong Hoon Cho, Min Il Kim, Ji Sun Im
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Preparation of Polyacrylamide with Improved Tacticity and Low Molecular Weight Distribution [PDF]
BIO Web of Conferences, 2022 Polyacrylamide with improved tacticity and low molecular weight distribution was obtained via stereospecific atom transfer radical polymerization (ATRP) using the mixture of Lewis acids Y(OTf)3 and AlCl3 in a certain ratio as stereospecific catalyst and ...
Jiang Jianguo +4 more
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Levan Production in Shake Flask and Fermenter Influence of Feeding Strategy on Levan Yield and Molecular Weight Distribution [PDF]
E3S Web of Conferences, 2023 Effect of feeding strategy on levan production was studied in a shake flask and a 5 L lab scale fermenter. In a shake flask, levan specific substrate yield (YP/S) increased from 0.35 g levan/g sucrose to 0.48 g levan/g sucrose with repeated batch feeding.
Veerapandian Bhuvaneshwari +5 more
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Nylon 6 polymerization in the solid state [PDF]
, 1982 The postcondensation of nylon 6 in the solid state was studied. The reactions were carried out on fine powder in a fluidized bed reactor in a stream of dry nitrogen in the temperature range 110-205°C and during 1-24 h. The solid-state polymerization (SSP)
Amirtharaj, John +2 more
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Molecular weight distribution of fructans extracted from Agave salmiana leaves
Botanical Sciences, 2022 Background: In mezcal industry, Agave salmiana leaves are a crop residue and a potential source of fructans. Agave fructans are a soluble fiber that can act as prebiotic in gut microbiota.
Arizbeth Plascencia +6 more
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Correlation between Microstructure and Rheological Properties of Broad Molecular Weight Distribution High Density Polyethylenes [PDF]
علوم و تکنولوژی پلیمر, 2015 In this article, the correlation between molecular microstructure and rheological behavior for three different grades of high density polyethylene with broad molecular weight distribution have been investigated.
Mohammad Javad Shirkavand +4 more
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Molecular weight characterization of cellulose using ionic liquids
Polymer Testing, 2021 Cellulose, the most abundant natural polymer on the planet, is the major polysaccharide produced by plant photosynthesis. It has many advantages, such as renewability, tremendous reversibility, complete biodegradability, excellent biocompatibility, high ...
Yan Zhou +6 more
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Melt flow ratio: A way to identify the type of polyethylene
Advanced Industrial and Engineering Polymer Research, 2023 Melt flow ratio (MFR or I21/I2) was measured for dozens of polyethylene (PE) in the melt index (MI or I2) range of 1–10 for various types of PE. I21/I2 for samples of linear low density polyethylene (LLD) polymerized by a Ziegler-Natta catalyst (ZN-LLD ...
Kejie Xu, Yuan Wen, Xiangbin Xu
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