Results 71 to 80 of about 12,723 (223)

Cis-Polybutadiene-Natural Rubber Blends

open access: yes, 1959
The preparation of 1:1 cis-polybutadiene-natural rubber blends has been shown to be feasible on a laboratory scale. Blends of this type have displayed hysteresis properties equivalent to the natural rubber control and have exhibited satisfactory modulus,
N. A. Stumpe   +2 more
core   +1 more source

Architecting nano‐Al/HMX/CuO energetic micro‐units unlocks superior interface and highly efficient combustion

open access: yesInfoMat, Volume 8, Issue 10, October 2026.
Improving the dispersion of nano‐aluminum is of great importance in explosives and propellants. The spherical Al/HMX/CuO energetic micro‐units were prepared using microchannel technology, which significantly improved the uniformity and dispersion of nano‐Al. It also enhanced the mass and heat transfer efficiency between the fuel and oxidizer components,
Gazi Hao   +12 more
wiley   +1 more source

Characteristic Ratio and Plateau Modulus of 1,2-Polybutadiene. A Comparison with Other Rubbers

open access: yes, 1990
In the course of work on linear and ring polybutadienes with 62% 1,2 units, a number of discrepancies were noted with data on polybutadienes of various microstructure available in the literature.
Paul M. Toporowski, Jacques Roovers
core   +1 more source

STRUCTURE AND DYNAMICS OF IRREGULAR MULTIARM STAR POLYMERS

open access: yesCondensed Matter Physics, 2002
Melt properties of highly branched star polymers consisting of a 1,2-polybutadiene core and nearly 270 arms of 1,4-polybutadiene with varying sizes have been investigated using small angle X-ray scattering (SAXS) and dynamic rheological measurements in ...
D.Vlassopoulos, T.Pakula, J.Roovers
doaj   +1 more source

Copolymerization of 1-hexene and 1-dodecene with 1,3-butadiene by a versatate/diisobutylaluminum hydride/t-butyl chloride catalyst system

open access: yesPolímeros, 2014
The aim of this study was to incorporate an alpha-olefin (1-hexene or 1-dodecene) in a high cis polybutadiene chain, using a neodymium versatate/diisobutylaluminum hydride/t-butyl chloride catalyst system.
Gustavo Monteiro da Silva   +4 more
doaj   +1 more source

Polymeric Polyaldehyde Approach to Develop Robust Dynamic Covalent Adaptive Polyimine Networks

open access: yesMacromolecular Rapid Communications, Volume 47, Issue 20, 20 October 2026.
A versatile approach exploring the synthesis of polymeric polyaldehydes with a polyacrylate backbone bearing pendant aldehyde groups to develop dynamic polyacrylate‐polyimine hybrid materials capable of the built‐in ability for extended operation and enhanced reliability. ABSTRACT Polyimine‐based covalent adaptive networks crosslinked with Schiff bases
Subrata Dolui   +8 more
wiley   +1 more source

Instability of styrene/polystyrene/polybutadiene/polystyrene‐b‐polybutadiene emulsions that emulate styrene polymerization in the presence of polybutadiene

open access: yesPolymer Engineering & Science, 2013
AbstractThis article investigates the room temperature demixing of oil‐in‐oil emulsions containing styrene (St), polybutadiene (PB), a St‐butadiene star block copolymer (BC), and two polystyrene (PS) samples of different molecular weights and is a contribution toward a better understanding of the stability/instability of the reaction mixture in a bulk ...
Velasquez, Eliezer   +6 more
openaire   +2 more sources

Vulcanization of Elastomers. 47. Vulcanization of Natural Rubber and Polybutadiene with Benzoyl Peroxide

open access: yes, 1966
The present article reports experiments intended to elucidate the kinetics of benzoyl peroxide decompositions in natural rubber and polybutadiene, and of consequent reactions.
Ernst Rohde, Walter Scheele
core   +1 more source

Development and Characterization of Thermo‐Responsive Shape Memory Composite of Polybenzoxazine and Modified Ultrafine Fully Vulcanized Natural Rubber (UFPNR) Filler

open access: yesSPE Polymers, Volume 7, Issue 4, October 2026.
Tough Thermo‐Responsive Composite from PBA‐a and Monomer Grafted UFPNR. ABSTRACT In this study, various types and concentrations of ultrafine fully vulcanized powdered natural rubbers (UFPNR) were evaluated on how they affect the toughness of bisphenol A polybenzoxazine (PBA‐a).
Achiraya Pattulee   +5 more
wiley   +1 more source

DYNAMIC MECHANICAL-PROPERTIES OF FILLED POLYBUTADIENE

open access: yes, 1992
The effect of filler on dynamic mechanical properties of polybutadiene-barium fluoride composites are investigated.
DESHPANDE, DD   +3 more
core   +1 more source

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