Results 81 to 90 of about 12,723 (223)

Influência das características estruturais sobre a processabilidade do polibutadieno alto cis Influence of structural characteristics on the high-cis polybutadiene processability

open access: yesPolímeros, 2004
Características físicas, tais como peso molecular, distribuição de peso molecular e ramificações, têm importância significativa na processabilidade do polibutadieno.
Ivana L. Mello   +3 more
doaj   +1 more source

The Filler Network Index: A Viscosity‐Independent Rheological Criterion for Quantifying Silica Architecture in Unvulcanized Rubber Compounds

open access: yesSPE Polymers, Volume 7, Issue 4, October 2026.
SEM images of unmodified (U30) and TESPT‐grafted (U30‐SCA) silica compounds show that pre‐grafting eliminates agglomerates. Stress relaxation data fitted with a constrained five‐element Weichert model give discrete relaxation times (τ1$$ {\tau}_1 $$‐τ5$$ {\tau}_5 $$), both reduced by grafting. Their ratio, the Filler Network Index (FNI = τ1$$ {\tau}_1 $
Ali Akbar Sadeghi   +2 more
wiley   +1 more source

Can Emulsion Styrene Butadiene Rubber Reinvent Itself Through Molecular Architecture, Interface Engineering, and Sustainable Feedstocks?

open access: yesSPE Polymers, Volume 7, Issue 4, October 2026.
Emerging Directions in Emulsion Styrene‐Butadiene Rubber: Molecular Design, Filler Interfaces, and Sustainable Feedstocks. ABSTRACT Emulsion styrene butadiene rubber (eSBR) is often viewed as a mature elastomer platform whose role in high‐performance tire applications is increasingly challenged by solution SBR (sSBR), particularly in silica‐filled ...
Sayan Basak
wiley   +1 more source

Synthesis of polybutadiene-acrylates and properties of the photocured films

open access: yes, 2005
The acrylation of polybutadienes was performed by reaction of acrylic acid with epoxy, epoxy-hydroxyl functionalized and hydroxylterminated oligomers.
Malucelli, Giulio, Ferrero, Franco
core   +1 more source

Sulfur-Induced cis-trans Isomerization of Polybutadiene

open access: yes, 1962
Both high cis-1,4-polybutadiene and high trans-1,4-polybutadiene were found to isomerize when heated in the presence of elemental sulfur. The kinetics of the sulfur induced isomerization of high cis-1,4-polybutadiene were studied over a wide range of ...
William A. Bishop
core   +1 more source

"Synthesis and characterization of high vinyl star-shaped liquid polybutadiene"

open access: yesHecheng xiangjiao gongye
Using cyclohexane and n-hexane as solvents, butadiene as monomer, and n-butyllithium as initiator, star-shaped liquid polybutadiene was synthesized via arm-first method with di-tetrahydrofurfuryl propane (DTHFP) as structure regulator.
WANG Jiu-ju1,2, JIA Ting2, LIU Xiao-jie2, ZHAO Chang-yu1, LI Wei2, LI Long1
doaj   +1 more source

Interfacial modification of polystyrene-block-polybutadiene-block-polystyrene/ magnesium hydroxide composites, 1-effect on rheological properties

open access: yes, 2003
Composites based on polystyrene-block-polybutadiene-block-polystyrene (SBS triblock thermoplastic elastomer) and magnesium hydroxide (Mg(OH)2) (5-60 wt.-%) have been prepared by twin screw extrusion.
Chris Liauw (23976648)   +4 more
core  

Synthesis and characterization of conducting polypyrrole-cis-1,4-polybutadiene composites

open access: yes, 1998
Conducting composite films of cis-1,4-polybutadiene with polypyrrole were prepared electrochemically. Polymerization of pyrrole was carried on cis-1,4-polybutadiene-coated platinum electrodes.
Zuhal Küçükyavuz   +3 more
core   +1 more source

Catalytic degradation of polybutadiene

open access: yes, 2004
The effect of Cobalt Fischere-Tropsch catalyst on the thermal degradation of cis-1,4 polybutadiene, polystyrene, chloride) and poly(vinyl acetate) in solution was investigated at various temperatures.
Gupte, Sachin L, Madras, Giridhar
core  

Thermal Degradation of Polyacrylonitrile, Polybutadiene, and Copolymers of Butadiene with Acrylonitrile and Styrene

open access: yes, 1959
Polybutadiene and a copolymer consisting of 76.5 per cent butadiene and 23.5 per cent of styrene were investigated as to the rate of their thermal degradation. The rates for polybutadiene indicated an activation energy of 62 kilocalories per mole.
Sidney Straus, Samuel L. Madorsky
core   +1 more source

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