Results 11 to 20 of about 6,513 (187)

Characterization and Thermal Rearrangement Investigation of 1,4-Polybutadiene by Nuclear Magnetic Resonance Spectroscopy [PDF]

open access: yesعلوم و تکنولوژی پلیمر, 2009
Microstructural investigation of low molecular weight 1,4-polybutadiene (1,4-PBD) was studied by 1H and 13C nuclear magnetic resonance spectroscopy (NMR).
F. Ziaee
doaj   +1 more source

Preparation and characterization of polybutadiene rubber nased on hydrogen bond and dynamic borate ester bond

open access: yesHecheng xiangjiao gongye, 2021
Through the thiol-ene click reaction, the dihydroxyl functional group was grafted onto the polybutadiene(PB) molecular chain. And Tannic acid(TA) was successfully incorporated into dihydroxyl functionalized PB through the synergy of hydrogen bonding ...
REN Qing-chen, SHI Zi-xing
doaj   +1 more source

Influence of number of catalyst sites in 1,3‐butadiene solution polymerizations catalyzed by titanium tetrachloride

open access: yesEngineering Reports, 2021
The synthetic rubber industry is of great importance and it is present in the daily life of world society. Butadiene rubber or polybutadiene is one of the most used polymers in this field, mainly in tire production.
Francisco R. L. Farias   +2 more
doaj   +1 more source

Preparation of high vinyl polybutadiene rubber via coordination polymerization with low-steric-hindrance alkoxy multi-substituted molybdenum

open access: yesHecheng xiangjiao gongye, 2022
A series of molybdenum based catalyst systems substituted with low alkoxy blocking ligands for the polymerization of 1,3-butadiene were synthesized, and polybutadiene with high vinyl content was prepared.
XIE Ting-hao; TANG Jian; GENG Jie-ting; WANG Xiao-tong; HUA Jing
doaj   +1 more source

Tribological Characterization of Some Elastomers Used at Progressive Cavity and Piston Pumps [PDF]

open access: yesMATEC Web of Conferences, 2020
The progressive cavity pump (PCP) is a positive displacement pump, consisting of a polished helical-shaped rod (rotor) turning inside a helical elastomer (stator).
Mohamed Iyad Al Naboulsi   +3 more
doaj   +1 more source

Repulsive bimodal atomic force microscopy on polymers

open access: yesBeilstein Journal of Nanotechnology, 2012
Bimodal atomic force microscopy can provide high-resolution images of polymers. In the bimodal operation mode, two eigenmodes of the cantilever are driven simultaneously.
Alexander M. Gigler   +5 more
doaj   +1 more source

Rheological Master Curves of Crystallizing Polymer Mixtures

open access: yesApplied Rheology, 2006
We present a simple methodology for extending linear viscoelastic measurements of crystallizing polymers to the high-frequency regime, where usually crystallization kinetics represents an obstacle. The idea is to perform rapid quenches, below the melting
Kapnistos M., Vlassopoulos D.
doaj   +1 more source

Estudo comparativo de diferentes tipos de polibutadieno na tenacificação de poliestireno Comparative study of different types of polybutadiene on the toughening of polystyrene

open access: yesPolímeros, 2007
Neste trabalho foi avaliada a tenacificação de poliestireno (PS) utilizando três tipos de polibutadieno (PB): polibutadieno baixo-cis (PBb), polibutadieno alto-cis (PBa) e copolímero em bloco (SBS) de estireno e butadieno (PBco). Foi observado um aumento
Fernanda M. B. Coutinho   +3 more
doaj   +1 more source

"Preparation of cardanol functionalized liquid 1,2-polybutadiene and enhancement of interfacial interaction on butadiene-styrene rubber/silica composites"

open access: yesHecheng xiangjiao gongye, 2022
Phenol functionalized liquid 1,2-PB (1,2-PB-g-CA) was prepared by grafting bio based cardanol (CA) onto 1,2-polybutadiene rubber (1,2-PB) by olefin metathesis.
GAO Wen-ke, ZHANG Wen-jing, LIU Jin-hui, HUA Jing?鄢
doaj   +1 more source

Determination of Gel Content (C-C Crosslink) in Polybutadiene Rubber by Differential Scanning Calorimetry [PDF]

open access: yesعلوم و تکنولوژی پلیمر, 2014
Due to the gel formation in polybutadiene and some of the problems raised in rubber industry such as groove cracking in products, quantification of the gel content and identification of the microstructure of butadiene elastomer is extremely important. In
Saeed Taghvaei Ganjali   +2 more
doaj   +1 more source

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