Results 11 to 20 of about 11,202 (203)

Guayule (Parthenium argentatum A. Gray), a Renewable Resource for Natural Polyisoprene and Resin: Composition, Processes and Applications

open access: yesMolecules, 2021
Natural rubber is an essential material, especially for plane and truck tyres but also for medical gloves. Asia ranks first in the production of natural rubber, of which the Hevea tree is currently the sole source.
Amandine Rousset   +7 more
doaj   +1 more source

Side-Arm Assisted Anilido-Imine Based Rare-Earth Metal Complexes for Isoprene Stereoselective Polymerization

open access: yesMolecules, 2021
Anilido-imine ligands o-C6H4(NHAr1)(CH=NAr2), in which Ar1 is 2,6-diisopropylbenzyl group and Ar2 contains fluorine (HL1) or methoxyl (HL2) group on ortho-position of phenyl substituent, were synthesized for constructing rare-earth metals based complexes
Yi Wu, Xinli Liu, Dongmei Cui
doaj   +1 more source

Composition of Guayule (Parthenium argentatum Gray) resin

open access: yesScientific Reports, 2023
Guayule (Parthenium argentatum Gray) is a semi-arid shrub, native from the Chihuahan desert. This plant produces polyisoprene and resin. Polyisoprene is the main focal point of many researches, from structure to properties. Today, some processes are used
Amandine Rousset   +7 more
doaj   +1 more source

Overexpression of an isopentenyl diphosphate isomerase gene to enhance trans-polyisoprene production in Eucommia ulmoides Oliver

open access: yesBMC Biotechnology, 2012
Background Natural rubber produced by plants, known as polyisoprene, is the most widely used isoprenoid polymer. Plant polyisoprenes can be classified into two types; cis-polyisoprene and trans-polyisoprene, depending on the type of polymerization of the
Chen Ren   +4 more
doaj   +1 more source

A method to suppress dielectric breakdowns in liquid argon ionization detectors for cathode to ground distances of several millimeters [PDF]

open access: yes, 2014
We present a method to reach electric field intensity as high as 400 kV/cm in liquid argon for cathode-ground distances of several millimeters. This can be achieved by suppressing field emission from the cathode, overcoming limitations that we reported ...
Auger, M.   +9 more
core   +2 more sources

Viscosity Index Improver for Engine Oils: An Experimental Study [PDF]

open access: yesJournal of Chemical and Petroleum Engineering, 2017
Engine oils are widely used for lubrication purposes in automobile and related industries. Viscosity Index (VI) improver has found its largest commercial applications as additives to engine oils.
Gaurav Rattan, Nitu Singh Parihar
doaj   +2 more sources

Polyisoprene Captured Sulfur Nanocomposite Materials for High-Areal-Capacity Lithium Sulfur Battery [PDF]

open access: yes, 2019
A polyisoprene-sulfur (PIPS) copolymer and nano sulfur composite material (90 wt % sulfur) is synthesized through inverse vulcanization of PIP polymer with micrometer-sized sulfur particles for high-areal-capacity lithium sulfur batteries.
Fang, C   +7 more
core   +1 more source

Self-Assembly of Supramolecules Consisting of Octyl Gallate Hydrogen Bonded to Polyisoprene-block-poly(vinylpyridine) Diblock Copolymers [PDF]

open access: yes, 2004
Synchrotron radiation was used to investigate the self-assembly in two comb-shaped supramolecules systems consisting of octyl gallate (OG), i.e., 1-octyl-3,4,5-trihydroxybenzoate, hydrogen bonded to the pyridine groups of polyisoprene-block-poly ...
Bondzic, S   +10 more
core   +2 more sources

Metabolic and taxonomic insights into the Gram-negative natural rubber degrading bacterium Steroidobacter cummioxidans sp. nov., strain 35Y. [PDF]

open access: yesPLoS ONE, 2018
The pathway of rubber (poly [cis-1,4-isoprene]) catabolism is well documented for Gram-positive rubber degraders but only little information exists for Gram-negative species.
Vikas Sharma   +5 more
doaj   +1 more source

Thermooxidative aging of polydicyclopentadiene in glassy state [PDF]

open access: yes, 2014
Thermal aging of thin films of unstabilized polydicyclopentadiene (pDCPD) at several temperatures ranging from 120 to 30 C was investigated by means of carbonyl build up by FTIR with ammonia derivatization, double bond titration, mass uptake measurement ...
LE GAC, Pierre Yves   +3 more
core   +3 more sources

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