Results 21 to 30 of about 7,057,591 (376)

Novel insight into low-temperature performance of various poly(alkyl methacrylate) homopolymers in lube oil [PDF]

open access: yesPolyolefins Journal, 2023
In this particular study, shear stability, pour point temperature and cold cranking simulation viscosity of different poly (alkyl methacrylate) homopolymers were investigated.
Seyed Mehrdad Jalilian   +2 more
doaj   +1 more source

Polymer surface science

open access: yesThe Chemical Record, 2001
AbstractMolecular level studies of the structure and mechanical properties of polymer surfaces have been carried out by sum frequency generation (SFG) surface vibrational spectroscopy and atomic force microscopy (AFM). The surfaces of different grades of polyethylene and polypropylene have been characterized—including during the glass transition and ...
Opdahl, A.   +3 more
openaire   +3 more sources

FERROCENYL ALKYLAMMONIUM N-SUBSTITUTED POLYPYRROLE CONTAINING Pt AND Pd AND ITS APPLICATION ON ELECTROANALYSIS OF ARSENITE [PDF]

open access: yes, 2016
Indexación: Web of Science; Scopus; Scielo.Arsenic occurs in a variety of forms and oxidation states and is a very toxic element. The main inorganic arsenic species present in natural waters are arsenate (oxidation state V) and arsenite ions (oxidation ...
Moutet, JC   +3 more
core   +1 more source

Mechanochemically accessing a challenging-to-synthesize depolymerizable polymer

open access: yesNature Communications, 2023
Polymers with low ceiling temperatures (Tc) are highly desirable as they can depolymerize under mild conditions, but they typically suffer from demanding synthetic conditions and poor stability.
Tze-Gang Hsu   +14 more
doaj   +1 more source

Bimetallic au/ag metal superstructures from macromolecular metal complexes in solid-state [PDF]

open access: yes, 2013
Indexación: Web of Science; Scielo.Novel bimetallic Au/Ag superstructures have been prepared from solid-state pyrolysis of the macromolecular complexes Chitosan(MLn/M'Ln)n y PSP-4-PVPx( MLn/M'Ln)n with MLn = AuCl3 and M'Ln = Ag(CF3SO3)The ...
Bobadilla, Daniela   +3 more
core   +1 more source

Properties of polypyrrole polyvinilsulfate films for dual actuator sensing systems [PDF]

open access: yes, 2017
One of the challenges of modern science is the development of actuators able to sense working conditions while actuation, mimicking the way in which biological organs work. Actuation of those organs includes nervous (electric) pulses dense reactive gels,
Fernández Otero, Toribio   +2 more
core   +2 more sources

Isosorbide-Based Thermoplastic Polyurethane with Different Polyols and Soft/Hard Ratios

open access: yesAdvances in Polymer Technology, 2023
A series of isosorbide-based thermoplastic polyurethanes (ISB-TPUs) with different soft/hard ratios have been successfully step polymerized using individual two types of polycaprolactone diol (PCL) or poly (tetramethylene glycol) (PTMG) for soft segment ...
Jin-Gyu Min   +6 more
doaj   +1 more source

The Next 100 Years of Polymer Science

open access: yesMacromolecular Chemistry and Physics, 2020
The year 2020 marks the 100th anniversary of the first article on polymerization, published by Hermann Staudinger. It is Staudinger who realized that polymers consist of long chains of covalently linked building blocks.
A. Abd-El-Aziz   +53 more
semanticscholar   +1 more source

Concluding remarks: The importance of polymer science for biological systems [PDF]

open access: yes, 2008
The 139th Faraday Discussion covered many interesting subjects, divided into four sections: Cell Interactions; Membranes & Walls; Proteins and Polysaccharides; and Natural & Synthetic Polymers.
Tirrell, David
core   +1 more source

Intrinsically fluorescent polyureas toward conformation-assisted metamorphosis, discoloration and intracellular drug delivery

open access: yesNature Communications, 2022
Biomimetic materials are of interest but can often suffer from limitations caused by the non-native linkages used. Here, the authors report on the creation of amino acid constructed polyureas which can self-assemble into vesicles and nanotubes with ...
Yeqiang Zhou   +11 more
doaj   +1 more source

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