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Chinese Journal of Polymer Science 2020年第4期38卷 357-362,I0006页

作者： Antoine Forens Kevin Roos Charlotte Dire Benoit Gadenne Stephane Carlotti Univ.Bordeaux CNRSBordeaux INPLCPOUMR 5629F-33600PessacFrance MFP Michelin Centre de Technologie/Ladoux23 Place des Carmes Dechaux63040 Clermont-Ferrand cedex 9France

Thermal,mechanical,and viscoelastic properties of polybutadiene-based rubber materials are highly dependent on polybutadiene *** use of polar modifier in association with alkyllithium is a well-known method to obtain polybutadiene with a high vinyl con *** approach is to use bimetallic initiating species such as alkyllithium combined to heavier alkali metal alkoxide(RONa,ROK...).The polymerization control is n evertheless not achieved and several parameters were found to influe nee *** bimetallic in itiating systems based on alkyllithium and a potassium alkoxide,alkyllithium structure,initiator preformation time,and initiator composition were identified as parameters influencing the anionic polymerization process of butadiene and/or polybutadiene *** addition,the use of trimetallic systems based on alkyllithium,potassium alkoxide,and alkylaluminum was investigated in order to prevent side reactions regardless of the[K]/[Li]ratio and of the initiator preformation time.

关键词： polybutadiene Anionic polymerization Microstructure (Multi)metallic systems Lithium/potassium-based systems

Rapid Self-healing and Strong Adhesive Elastomer via Supramolecular Aggregates from Core-shell Micelles of Silicon Hydroxyl-functionalized cis-polybutadiene

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Chinese Journal of Polymer Science 2023年第1期41卷 84-94页

作者： Ying-Ying Zheng Han Zhu Yi Tan Feng-Yi-Qi Liu Yi-Xian Wu State Key Laboratory of Chemical Resource Engineering Beijing Advanced innovation Center for Soft Matter Science and EngineeringBeijing University of Chemical TechnologyBeijing100029China

Liquid trimethoxy silane-functionalized cis-polybutadiene(cis-PB-Si(OMe)3),possessing number-average molecular weights of cis-PB segments(Mn,PB)ranging from 1800 g/mol to 5400 g/mol,with cis-1,4 content of ca.80%and high functionality(>96%)could be synthesized by coordination copolymerization of living cis-PB chain ends with ethenyltrimethoxy-silane with neodymium-based catalytic *** silicon hydroxyl-functionalized cis-polybutadiene(cis-PB-Si(OH)_(3))-based micelles in water have been achieved by in situ hydrolysis of cis-PB-Si(OMe)_(3)in hexane/water mixture(pH=6.8)at 70℃and by sequential removal of residue *** size of the above micelles with soft elastic cis-PB cores could be remarkably enlarged by loading SiO_(2)nanoparticles on their surfaces via hydrogen bonding *** supramolecular long chain aggregates or networks formed by hydrogen bonding interaction and possible O—Si—O chemical bonds between cis-PB-Si(OH)3-based micellar surfaces had relatively large size and thus precipitated from water after several months of storage,leading to production of cis-PB-Si(OH)_(3)solid elastomer with extremely low T_(g)at−107.0℃.The left cis-PB-Si(OH)_(3)-based micelles in water with relatively small size gradually formed the water-insoluble cis-PB-Si(OH)_(3)-based supramolecular aggregates or *** cis-PB-Si(OH)_(3)-based supramolecular elastomer exhibited excellent self-healing property within 60 s at 25℃.The elastomer(20 mg)in a joint of 25 mm×30 mm(2.7 mg/cm^(2))provided very strong adhesion for two pieces of glass and the bound glass keep unchanged at room temperature for 98 h even hung with 100 g of steel column *** cis-PB-Si(OH)3-based supramolecular elastomer would have potential applications in adhesives,self-healing materials,damping materials and elastic materials.

关键词： Amphiphilicity polybutadiene Core-shell micelles Supramolecular aggregates

MORPHOLOGY OF polybutadiene “SHISH KEBABS”

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Chinese Journal of Polymer Science 1989年第1期7卷 1-8页

作者：徐洋周恩乐余赋生钱保功 Changchun Institute of Applied Chemistry Academia Sinica

Shish kebab structure of cis-1 , 4-polybutadiene has been obtained by quiescent solution crystallization at suitable temperature. The morphology and growth mechanism of formation of shish kebab structure have been stu... 详细信息

关键词： Morphology of polymers polybutadiene Shish kebab Solution crystallization

THE BIMODAL MOLECULAR WEIGHT DISTRIBUTION OF cis-polybutadiene POLYMERIZED WITH LANTHANIDE COMPLEX CATALYSTS

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Chinese Journal of Polymer Science 1987年第2期5卷 101-108页

作者：程镕时胡慧贞姜连昇 Changchun Institute of Applied Chemistry Academia Sinica Changchun Department of Chemistry Nanjing University Nanjing

The variation of the molecular weight and molecular weight distribution of cis-polybutadiene in the course of polymerization catalyzed by lanthanide complex composed of triisobutyl aluminium or diisobutyl aluminium hydride was investigated by osmometry, viscometry and size exclusion chromatography. By analyzing the experimental data, the reasons of the appearance of himodal molecular weight distribution were elucidated and the possible mechanisms of polymerization were discussed.

关键词： polybutadiene Lanthanide catalyst Molecular weight distribution Mechanism of polymerization

RHEOLOGICAL CHARACTERIZATION OF PROCESSABILITY OF UNVULCANIZED polybutadiene

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Chinese Journal of Polymer Science 1987年第1期5卷 81-86页

作者：杜雪许元泽钱人元 Academia Sinica Beijing Institute of Chemistry

Rheological investigation on a series ot unvulcamzed polybutadiene elastomers of different processability has been carried out by means of a capillary extrusion rheometer. It is found that the processability of unvulcanized polybutadiene can be correlated with the occurrence of unsteady flow and the wall stress, dependence of the dimensionless number e characterizing the entrance elongational elasticity which has been found to be sensitive to the branching structure and the molecular weight distribution of the samples. Interpretations based on the structural data of unvulcanized polybutadiene were discussed.

关键词： Rheology polybutadiene Processability Elongational elasticity

Citrus oils as chain transfer agents in the cross-metathesis degradation of polybutadiene in block copolymers using Ru-alkylidene catalysts

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Natural Science 2013年第7期5卷 857-864页

作者： Araceli Martínez Selena Gutiérrez Mikhail A. Tlenkopatchev Centro de Investigaciones Biológicas del Noroeste CIBNOR México City México Instituto de Investigaciones en Materiales Universidad Nacional Autónoma de México México City México

The cross-metathesis degradation of poly(styrene-co-butadiene) (styrene, 30 wt%) (SB-1) and poly(styrene-co-butadiene) (styrene, 21 wt%) (SB- 2) in the presence of essential oils and d-limo-nene as chain transfer agents (CTAs) using Rualkylidene catalysts (PCy3)2(Cl)2Ru = CHPh (I) and (1,3-diphenyl-4,5-dihydroimidazol-2-ylidene) (PCy3)Cl2Ru=CHPh (II) was studied. Terpene-terminated butadiene oligomers and polystyrene blocks were obtained as products of the degradation of SB-1 and SB-2. Catalysts I and II showed high activity in the degradation of SB copolymers to produce the low molecular weight products (Mn = 276 - 335 g·mol-1) and yields ranging from 91% - 95%. The cross-metathesis degradation of copolymers in organic solvents and in citrus oils (mandarin, orange and lemon oils) proceeded with similar efficiency and resulted in the same molecular weight butadiene oligomers. According to GS/MS (EI) analysis, the main products of the degradation of SB-1 copolymer with d-limonene were limonene-terminated oligomers of series Am (m = 1 - 4).

关键词： Metathesis Degradation polybutadiene in Block Natural Oils d-Limonene Ru-Alkylidene Catalysts

CARBON-13 NMR STUDY ON MOLECULAR MOTION OF 1, 2-polybutadiene——TEMPERATURE DEPENDENCE OF MOLECULAR MOTION

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Chinese Journal of Polymer Science 1986年第3期 235-240页

作者：倪少儒沈联芳余赋生钱保功 Changchun Institute of Applied Chemistry. Academia Sinica Changchun

Proton-decoupled, 13C FT-NMR （operating at 50.3 MHz） is used to determine spin-latticerelaxation time （T1）, nuclear Overhauser enhancement （NOE）, linewidth and chemical shift of 1,2-polybutadiene as a function of temperature in CDCl3 solution and the temperature dependence ofmolecular motion of 1,2-polybutadiene has been investigated with these NMR relaxation *** is found that jumps of NOE and linewidth vs. temperature appear between-1℃and -30℃. Theminimum of nT1 vs. temperature for all carbons occur at about -45℃.

关键词： NOE TEMPERATURE DEPENDENCE OF MOLECULAR MOTION CARBON-13 NMR STUDY ON MOLECULAR MOTION OF 1 polybutadiene NMR

CHAIN ENTANGLEMENT AND CRYSTALLIZATION OF cis-1,4-polybutadiene

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Chinese Journal of Polymer Science 1986年第3期 207-213页

作者：周恩乐金桂萍张延寿 Changchun Institute of Applied Chemistry Academia Sinica Changchun

The morphological structure and mechanism of nucleation and growth of Ln-PB and Ni-PBwith different molecular weight were investigated by transmission electron microscopy. The crys-tallization of low molecular weight fraction is primarily from predetermined nuclei, crystallizationfor the high molecular weight fraction is primarily from sporadic nuclei. Two types morphologyof spherulite with different lamellar entanglement have been observed. The entanglement of highermolecular weight fractions are found to be of significance in the morphology and rate of crystallizationof polymer.

关键词： CHAIN ENTANGLEMENT AND CRYSTALLIZATION OF cis-1 polybutadiene cis OC

Synthesis and properties of polybutadiene with narrow molecular weight distribution by using homogeneous neodymium catalyst

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Synthesis and properties of polybutadiene with narrow molecu...

Synthesis of polybutadienes with Controllable Microstructure by a Novel Binary Nd(3-NBSO_3)_3/Alkylaluminum Catalyst System

2005年全国高分子学术论文报告会

作者：董为民姜连升张学全中国科学院长春应化所高分子工程实验室中国科学院长春应化所高分子工程实验室中国科学院长春应化所高分子工程实验室

＜正＞稀土化合物（Nd）,如新癸酸钕、异辛酸钕以及异辛酸改性的稀土膦酸盐,在丁二烯存在及50℃下,与Al（i-Bu）2H反应后,再与Al（i-Bu）2Cl作用,可形成均相稳定的催化剂体系。该催化剂不仅对丁二烯聚合具有高的催化活性及立体定向性（... 详细信息

＜正＞稀土化合物（Nd）,如新癸酸钕、异辛酸钕以及异辛酸改性的稀土膦酸盐,在丁二烯存在及50℃下,与Al（i-Bu）2H反应后,再与Al（i-Bu）2Cl作用,可形成均相稳定的催化剂体系。该催化剂不仅对丁二烯聚合具有高的催化活性及立体定向性（顺-1,4含量＞96％）,而且具有

关键词： rare earth neodymium butadiene polybutadiene molecular weight distribution

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Chinese Journal of Polymer Science 2015年第3期33卷 475-480页

作者： Ji-qin Wen Xue-quan Zhang 代全权 Key Laboratory of Synthetic Rubber Changchun Institute of Applied ChemistryChinese Academy of Sciences Jiangsu Province Institute for Medical Equipment Testing

The polymerization of 1,3-butadiene was examined by using a novel halogen-free neodymium m-nitrobenzenesulfonate （Nd（3-NBSOa）3·donors）/alkylaluminum binary catalyst system. The catalyst showed fairly high activity and controllable selectivity. The microstructure of the resultant polymer was adjustable by variation of electron donor and/or the alkylaluminum. ^13C-NMR and thermal analysis demonstrate that the produced polybutadienes have stereo-block chain structures of cis-1,4 and trans-1,4 segments with adjustable Tm and To. The neodymium sulfonate-based catalyst is believed to be significant in regulating the chain structure of polydienes and in exploring 1,3-diene polymerization mechanism.

关键词： polybutadiene Microstructure Ziegler-Natta polymerization.