Results 21 to 30 of about 10,860 (230)
Recent advances in the polymerization of butadiene over the last decade [PDF]
Polyolefins Journal, 1999 The stereospecific polymerization of conjugated dienes began in 1954 with the first catalysts obtained by combining TiCl4 or TiCl3 with aluminum-alkyls, i.e.
Giovanni Ricci, Giuseppe Leone
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Sample Thickness and Structural Changes in Thermo-Oxidative Degradation of Polybutadiene [PDF]
علوم و تکنولوژی پلیمر, 2012 The thermo-oxidative degradation of two viscous liquid resins of 1,2- poly-butadiene (1,2-PBD) and 1,4- polybutadiene (1,4-PBD) have been studied by differential scanning calorimetry (DSC) and thermogravimetry analy-sis (TGA). To study further, the
farshid Ziaee, Aida Shoushtari-Zade
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Rearrangement Strategy for the Preparation of Polymers With π-Conjugated Structures
Frontiers in Chemistry, 2021 π-Conjugated polymers are usually prepared by polymerization only. In this perspective article, typical synthesis methods of conjugated polymers are briefly summarized, and a novel strategy for preparing conjugated polymers by rearrangement is proposed ...
Jian Tang +4 more
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Determination of Polybutadiene Unsaturation Content in Thermal and Thermo-Oxidative Degradation Processes by NMR [PDF]
علوم و تکنولوژی پلیمر, 2013 The unsaturation content of various polybutadiene (PBD) types of 1,4-cis, 1,4-trans and 1,2-vinyl isomers with different molecular weights was investigated.
Farshid Ziaee
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Hecheng 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
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, 2022 To obtain and maintain rubber properties such as elasticity, strength, creep, and chemical resistance, or stiffness over time, rubbers must be chemically cross-linked, mainly by sulfur vulcanization.
Anne-Laure Wirotius (1483144) +4 more
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Hecheng 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
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Tribological Characterization of Some Elastomers Used at Progressive Cavity and Piston Pumps [PDF]
MATEC 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
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Time-temperature superposition of polybutadiene vitrimers
, 2023 A vitrimer has covalent cross-links that preserve network connectivity but permit topology fluctuations through dynamic exchange reactions. In this work, we investigate the linear rheology of polybutadiene (PB) vitrimers bearing cross-links that exchange
Sachin, Shanbhag +4 more
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Repulsive bimodal atomic force microscopy on polymers
Beilstein 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
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