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8,201 Newest Publications about the topic molecular weight


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Ductile‐to‐brittle transition behavior of low molecular weight polycarbonate under carbon dioxide

19-Apr-2017 | Tomoaki Taguchi, Ramu Miike, Tomoe Hatakeyama, Hiromu Saito, Polymer Engineering and Science, 2017

We investigated the stress–strain behavior of low molecular weight polycarbonate for optical disc grade (OD‐PC) under carbon dioxide (CO2) at various pressures, and compared the results with that under ambient pressure at various temperatures. Elongation at break decreased sharply with increased ...


Expanding Morphology Library of Block Copolymer Self-Assemblies with Clews of Tubules

19-Apr-2017 | Xiao-Li Sun; Dong-Ming Liu; Pan Wang; Jia-Lin Tan; Kang-Kang Li; Li Deng; Wen-Ming Wan, Chemical Communication, 2017

The morphology library of block copolymer (BCP) self-assemblies is limited, especially as tubular structures are concerned. Here, the morphology of clews of tubules is discovered for the first time by self-assembly of P4VP-b-PS BCPs with both high asymmetry and very high molecular weight, which ...


Effect of Metal Loading in NiMo/Al2O3 Catalysts on Maya Vacuum Residue Hydrocracking

14-Apr-2017 | Holda Purón; José Luis Pinilla; J. A. Montoya de la Fuente; Marcos Millán, Energy & Fuels, 2017

Hydrocracking catalysts with large porosity need to be developed to treat heavy oil feedstocks rich in large molecular weight components such as asphaltenes and withstand deactivation due to coke formation. In this work, catalysts were prepared by impregnation of varying NiMo loadings on a ...


Mechanical and morphological properties of cellulose nanocrystal‐polypropylene composites

13-Apr-2017 | Helia Sojoudiasli, Marie‐Claude Heuzey, Pierre J. Carreau, Polymer Composites, 2017

In this work, the rheological, mechanical, morphological, and thermal properties of cellulose nanocrystal (CNC)‐polypropylene (PP) composites prepared in the molten state were investigated. All samples contained a maleated PP used as combatibilizer. Degradation of the PP in the presence of CNCs ...


Exploration and Performance Evaluation of Microwave‐induced Plasma with Different Discharge Gases for Ambient Desorption/Ionization Mass Spectrometry

12-Apr-2017 | Jingwei Yin, Zhongjun Zhao, Xuefang Zhan, Yixiang Duan, Rapid Communications in Mass Spectrometry, 2017

Rationale Microwave‐induced plasma (MIP) with different discharge gases of argon or helium provides significant plasma‐based ambient desorption/ionization sources, which have potential applicability in direct analysis of complex samples without any sample pre‐treatment. In this study, ...


Transcriptomics and Lipidomics of the Environmental Strain Rhodococcus ruber Point out Consumption Pathways and Potential Metabolic Bottlenecks for Polyethylene Degradation

12-Apr-2017 | Kévin Gravouil; Romain Ferru-Clément; Steven Colas; Reynald Helye; Linette Kadri; Ludivine Bourdeau; Bouziane Moumen ..., Environmental Science & Technology, 2017

Polyethylene (PE), one of the most prominent synthetic polymers used worldwide, is very poorly biodegradable in the natural environment. Consequently, PE represents by itself more than half of all plastic wastes. PE biodegradation is achieved through the combination of abiotic and biotic ...


Materials, Vol. 10, Pages 405: Study on Protection Mechanism of 30CrMnMo-UHMWPE Composite Armor

12-Apr-2017 | Zhou, Yu ; Li, Guoju ; Fan, Qunbo ; Wang, Yangwei ; Zheng, Haiyang ; Tan, Lin ; Xu, Xuan, Materials, 2017

The penetration of a 30CrMnMo ultra-high molecular weight polyethylene armor by a high-speed fragment was investigated via experiments and simulations. Analysis of the projectile revealed that the nose (of the projectile) is in the non-equilibrium state at the initial stage of penetration, and ...


Synthetic, Functional Thymidine-Derived Polydeoxyribonucleotide Analogues from a Six-Membered Cyclic Phosphoester

10-Apr-2017 | Yi-Yun Timothy Tsao; Karen L. Wooley, Journal of the American Chemical Society, 2017

A grand challenge that crosses synthetic chemistry and biology is the scalable production of functional analogues of biomacromolecules. We have focused our attention on the use of deoxynucleoside building blocks bearing non-natural bases to develop a synthetic methodology that allows for the ...


Red mud as secondary source for critical raw materials – Extraction study

07-Apr-2017 | É Ujaczki, YS Zimmermann, CA Gasser, M Molnár, V Feigl, M Lenz, Journal of Chemical Technology & Biotechnology, 2017

ABSTRACT BACKGROUND Red mud is a by‐product of alumina extraction from bauxite by the Bayer process produced in the billion tons scale worldwide. Red muds, or more generally bauxite residues, are regarded as waste, but may potentially be valuable sources of critical raw materials (CRM). In ...


Self-assembly behaviors of dibenzylidene sorbitol hybrid organogels with inorganic silica

05-Apr-2017 | Wei-Chi Lai; Po-Hsun Huang, Soft Matter, 2017

Molecular interactions, rheological behaviors and microstructures of 1,3:2,4-dibenzylidene-D-sorbitol (DBS)/poly(ethylene glycol) (PEG) organogel-inorganic silica hybrid materials are discussed in this study. DBS can dissolve in low-molecular-weight PEG to form organogels. The self-assembly ...


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