نتایج جستجو برای: pp 137

تعداد نتایج: 97731  

Journal: Polyolefins Journal 2019

The aim of the present work is to enhance the antifouling properties of polypropylene (PP) membrane based on hydrophilicity improvement. Different contents of neat and modified nanodiamond (0.25, 0.50, 0.75 and 1.00 wt.%) were embedded into PP membranes. Nanodiamond nanoparticles were carboxylated by heat treatment method and the presence of carboxyl functional groups on the surface of nanopart...

2016

. iiniMne RnmoanVi rrtv*n i icno ur iiib?iv>? ? Baltimore: The Williams and Wilkins Company, 1933. Pp. x plus 207. Price, 5s. (Agents are: Messrs. Bailliere, Tindall and Cox, London.) This book is one volume of a series entitled A century of progressFrom the list at the end of the book it is gathered that this series consists of a collection of small volumes on various technical subjec s, each ...

Journal: :Pediatric Critical Care Medicine 2018

Journal: :Journal of High Energy Physics 2022

The associated production of a W and Z boson is studied in final states with multiple leptons produced proton-proton (pp) collisions at centre-of-mass energy 13 TeV using 137 fb$^{-1}$ data collected the CMS detector LHC. A measurement total inclusive cross section yields $\sigma_{\text{tot}}$(pp $\to$ WZ) = 50.6 $\pm$ 0.8 (stat) 1.5 (syst) 1.1 (lumi) 0.5 (theo) pb. Measurements fiducial differ...

Journal: :Frontiers in sustainability 2022

We have studied the impacts of polypropylene (PP) and poly lactic acid (PLA) to quantify differences between fossil-based first generation biosourced plastics. Preliminary results on impact assessment from manufacturing stages suggested that smaller lot size part weight each injection molded plastic material, higher economic environmental impacts. When were equal, PLA performed better than PP. ...

Journal: Polyolefins Journal 2016

Despite the great potential of graphene as a nanofiller, achieving homogeneous dispersion remains the key challenge for effectively reinforcing polyolefin (such as polyethylene (PE) and polypropylene (PP)) nanocomposites. Therefore, in this research, we report a facile combined in situ polymerization and masterbatch method for fabricating PP/reduced graphene oxide (rGO) nanocomposites. In the p...

Journal: Polyolefins Journal 2014

A fourth-generation Ziegler-Natta catalyst was prepared to synthesize polypropylene (PP), which was stabilized by in situpolymerization employing lignin as antioxidant. The antioxidant properties of lignin were compared with those of the commercial antioxidant Irganox 1010. The presence of lignin in the reaction medium slightly decreased the catalytic activity of the reaction. The isotacticity ...

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