Results 51 to 60 of about 12,163 (230)

Long chain branching analysis of polyethylene using advanced fractionation methods [PDF]

open access: yes, 2021
Thesis (MSc)--Stellenbosch University, 2021.ENGLISH ABSTRACT: olyolefins (POs) have contributed immensely to the quality of life since their commercialization in the mid-1950s and they are modified continuously to suit new applications.
Ndlovu, Petronella Zabesuthu
core  

Bioinspired Mechanically Robust Organic–Inorganic Hybridized Bio‐Adhesives With up to 50% Inorganic Components by Bi‐Continuous Phase Engineering

open access: yesAdvanced Functional Materials, EarlyView.
A robust plant protein adhesive was prepared by fabricating a bi‐continuous organic–inorganic hybrid structure. Compared with traditional organic–inorganic hybrid adhesives, the addition amount of inorganic phase is increased from 0.2%–3.0% to 50%, and the strength and toughness are increased by 6 and 121 times, respectively.
Zheng Liu   +10 more
wiley   +1 more source

Examination of the Molecular Mass of Polyhydroxypolyamides

open access: yes, 2010
The work described in this thesis investigated the use of size exclusion chromatography (SEC) to fractionate a variety of different polyhydroxypolyamide (PHPA) samples for analysis by matrix assisted laser desorption ionisation-time of flight ...
Faville, Martyn
core  

Branching Defects in Dendritic Molecules: Coupling Efficiency and Congestion Effects

open access: yes, 2013
International audienceAn analytical model supplemented by Monte Carlo simulations specifies the statistics of branching defects in dendritic molecules as a function of the generation g as well as the maximal g for which defect-free synthesis is possible,
A. Dieter Schlüter   +5 more
core   +1 more source

Transparent and Robust LiCl–Organohydrogel Triboelectric Nanogenerator With Deep Learning Assisted Sensing

open access: yesAdvanced Functional Materials, EarlyView.
Develop a LiCl–PEI–PAM hydrogel with 3000% stretchability and excellent optical transparency. Through comparative studies of various salts, confirm that LiCl is the most suitable salt for high TENG output. Achieve excellent freeze‐resistant, dry‐resistant, and rapid self‐healing (10 s) properties even in extreme environments. Balance ionic conductivity,
Hai Anh Thi Le   +6 more
wiley   +1 more source

Easily accessible thermotropic hydrogen-bonded columnar discotic liquid crystals from fatty Acid– Tris-Benzoimidazolyl Benzene complexes [PDF]

open access: yes, 2016
We report the formation of easily accessible hydrogen-bonded columnar discotic liquid crystals (LCs) based on tris-benzoimidazolyl benzene (TBIB) and commercially available fatty acids. By increasing the length of the fatty acid, the temperature range of
Lugger, JAM Jody   +3 more
core   +1 more source

Steering Oxygen Activation Pathways via Redox Dual‐Defects in 2D Hydrated WO3 for High‐Yield Singlet Oxygen Evolution

open access: yesAdvanced Functional Materials, EarlyView.
Redox dual‐defects (Cs substitution and O vacancies) in 2D hydrated WO3 steer O2 activation toward selective singlet oxygen evolution. WO‐CO achieves 8.6–15.8 times higher 1O2 production than single‐defect or pristine catalysts, enabling efficient pollutant mineralization via a pathway‐selective photocatalytic mechanism.
Sheng‐Qi Guo   +8 more
wiley   +1 more source

Condition assessment of polyethylene pipeline systems

open access: yes, 1997
This thesis was submitted for the degree of Doctor of Philosophy and awarded by Brunel University.This study is an industrial project commissioned by British Gas plc.
Jaafar, H., Jaafar, Haydar
core  

Synthesis and modification of water-soluble hyperbranched poly(amidoamine)s [PDF]

open access: yes, 2002
The multi-step syntheses of two water-soluble AB(_2) monomers, N-acryloyl-1,2- diaminoethane hydrochloride and N-acryloyl-1,2-daminoethane, are reported. The melt polymerisation at 210 ºC for 4 hours of N-acryloyl-1,2-diaminoethane hydrochloride gave, by
Gargiuli, Joseph Fernand
core  

Influence of polymer architectures on diffusion in unentangled polymer melts

open access: yes, 2017
Molecular dynamics simulations of polymer melts composed of polymers of different branching complexity suggests that the average polymer shape and hydrodynamic radius are important for the understanding of the polymer diffusion, as in polymer solutions.
Alexandros Chremos   +2 more
core   +1 more source

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