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Science China Chemistry 2010年第5期53卷 1141-1147页

作者： sang qian,feng ying ,{2.,Ministry of education Qingdao University of Science and Technology,Qingdao 2.6042.China 1. key laboratory of {2.-plastics Ministry of Education Qingdao University of Science and Technology Qingdao 266042 China

The radical polymerization of methyl methacrylate(MMA) was carried out in the presence of combined Lewis acids of the AlCl3-FeCl2.*** with the polymerization produced in the presence of single Lewis acids,AlCl3 or FeCl2.the MMA polymerization in the presence of AlCl3-FeCl2.composite in CHCl3 or 1-butanol produced a polymer with a higher isotacticity and in toluene produced a polymer with a much higher isotacticity(mm=50%) .The molecular weight and polydispersity of PMMA in the presence of Lewis acids were similar with those in the absence of Lewis acids,although Lewis acids decelerate the polymerization of *** effects of the Lewis acids were greater in a solvent with a lower polarity.A possible stereocontrol mechanism of the polymerization was *** Lewis acid composite of AlCl3-FeCl2.readily formed a complex with growing *** complexes possessed apparent bulkiness that changes the direction of monomer addition to the growing radical center.

关键词： MMA radical polymerization tacticity Lewis acid stereocontrol polymerization

A novel reprocessable chloroprene rubber based on dynamic disulfide metathesis

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International Journal of Smart and Nano Materials 2024年第1期15卷 42-61页

作者： Jianliang Jiang Junxue Zhai Yanqing Chen dongqi zhao Yakai {2. School of Chemical Engineering and Technology Collaborative Innovation Center of Chemical Science and Chemical Engineering(Tianjin)Tianjin UniversityTianjinChina R&D Department of China(Yangzhou) Material Handling Tech-Engineering LtdYangzhouChina key laboratory of {2. plastics of Ministry of education/Shandong Province (QUsT)School of Polymer Science&EngineeringQingdao University of Science&TechnologyQingdaoChina R&D Department of Tianjin Joaboa Technology Co.Ltd TianjinP.R.China Frontiers Science Center for Synthetic Biology Tianjin UniversityTianjinChina key laboratory of Systems Bioengineering(Ministry of {2.) Tianjin UniversityTianjinChina

For sustainable application of chloroprene rubber(CR),a new technology is developed by the vulcanization of CR using 2.2.-dithiodipyridine(DPD)as a cross-linking agent with the repro-cessing performance owing to disulfde *** DPD was incorporated into CR vulcanization,the Menschutkin reac-tion between allyl chloride group and pyridine group occurred with a maximum exothermic peak at 184°*** number of effective cross-linking bond at o.5 phr DPD vulcanizate was higher than that at high DPD *** vulcanizate showed high tensile strength(11.12.MPa)and elongation at break(12.3±12.%)owing to the exchangeable disulfide bond in the *** the catalysis of triphenylphosphine,the metathesis of disulfide compound was improved obviously,which endowed CR/DPD vulcanizates with good recyclability *** cross-linkage maintains its stability at low temperature,thus ensuring the mechanical stability of CR/DPD vulcanizate under the ambient *** and reprocessing of CR/DPD vulcanizate can be conducted with common industrial rubber processing *** reprocessable chloroprene rubber could have potential appli-cation in CR industry,also serve to significantly improve envir-onmental sustainability.

关键词： Chloroprene rubber reprocessable Menschutkin reaction disulfide

Study on Catalytic Behavior of Iron-based Catalyst with IITP as Electron Donor in the Polymerization of Butadiene

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Chinese Journal of Polymer Science 2024年第5期42卷 612-619,I0007页

作者： Shi-Liang Xu ying-Nan zhao Yao Yu Qi Yang Li-Hua Na Heng Liu Chun-Yu Zhang Xue-Quan Zhang key laboratory of Advanced {2. Material Ministry of EducationSchool of Polymer Science and EngineeringQingdao University of Science&TechnologyQingdao266042China Shandong Provincial College laboratory of {2. Material and Engineering School of Polymer Science and EngineeringQingdao University of Science&TechnologyQingdao266042China key Lab of rubber-{2. Ministry of Education/Shandong Provincial Key Lab of Rubber-plasticsSchool of Polymer Science and EngineeringQingdao University of Science&TechnologyQingdao266042China

In this study,a novel iron-based catalyst system,Fe(acac)3/(isocyanoimino)triptenylphosphorane(IITP)/AlR3,was employed for the synthesis of syndiotactic 1,2.polybutadiene in *** catalyst system exhibits remarkably high catalytic activity,achieving a polymerization activity of 762.kgpolymer·molcatalyst^(-1)·h^(-1)at 50℃with a[BD]/[Fe]molar ratio of ***,living polymerization characteristic were observed during the investigation of the polymerization kinetics of 1,3-butadiene *** characteristics were well demonstrated by a narrow molecular weight distribution(PDI≈2.0)of the resulting polybutadiene and a linear relationship between-ln(1-c)and polymerization time as well as number average molecular weight and polymer *** resultant polymer showed a 1,2.selectivity of approximately 76%and stereoregularity ranging from 62.to 73%(rrrr).Additionally,through kinetic studies on polymerization reaction,an apparent activation energy Ea value of this catalytic system was calculated to be 84.98 kJ·mol^(-1),which suggests that high polymerization temperature favors efficient polymerization.

关键词： Iron catalyst Syndiotactic 1,2.polybutadiene Elastomers Donor Selectivity

PREPARATION OF A NOVEL CPE THERMOPLASTIC ELASTOMER VIA IN-SITU CHLORINATING GRAFT COPOLYMERIZATION

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PREPARATION OF A NOVEL CPE THERMOPLASTIC ELASTOMER VIA IN-SI...

ANHYDRIDE FUNCTIONALIZATION RESEARCH OF PVC VIA IN-SITU CHLORINATING GRAFT COPOLYMERIZATION

40th IUPAC Congress

作者： Xuezhen Zhu 1 jiruo zhao 1.2. {2. feng 1 and Qingming Yin 1 1 key laboratory of rubber-plastics Ministry of education School of Polymer Science and Engineering Qingdao University of Science & Technology Qingdao 2.6042.China 2.State key laboratory of Polymer Physics and Chemistry Changchun Institute of Applied Chemistry Chinese Academy of Sciences Changchun 13002. China

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ANHYDRIDE FUNCTIONALIZATION RESEARCH OF PVC VIA IN-SITU CHLO...

The effect of A1C13 on second butyl chloride initiated atom transfer radical polymerization of MMA

40th IUPAC Congress

作者： Qifu Qin1 jiruo zhao1.2.{2. feng1 and Runxin Zhang1 1key laboratory of rubber-plastics Ministry of education School of Polymer Science and Engineering Qingdao University of Science & Technology Qingdao 2.6042.China 2.tate key laboratory of Polymer Physics and Chemistry Changchun Institute of Applied Chemistry Chinese Academy of Sciences Changchun 13002. China

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The effect of A1C13 on second butyl chloride initiated atom ...

Polyisoprene Bearing Dual Functionalized Mini-blocky Chain-ends Prepared from Neodymium-mediated Coordinative Chain Transfer Polymerizations

2.05年全国高分子学术论文报告会

作者： Yuling Wang ying feng {2. zhao, Runxin Zhang key laboratory of rubber-plastics, Ministry of education, School of Polymer Science and Engineering, Qingdao University of Science& Technology Qingdao, 2.6042. China. State key laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 13002., China.

＜正＞Effects of aluminium trichloride（AlCl3）were investigated in the atom transfer radical polymerization of methyl methacrylate（MMA）with the iron dichloride tetrahydrate（FBCl2.4H2.）／triphenyl phosphine（PPh... 详细信息

关键词： ATRP MMA A1C13 Polymerization Lewis acide.

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Chinese Journal of Polymer Science 2023年第5期41卷 720-727,I0008页

作者： Wei-Xin Wang Wen-Peng zhao Jing dong Hua-{2.g Zhang feng Wang Heng Liu Xue-Quan Zhang key laboratory of {2.-plastics Ministry of EducationShandong Provincial Key Laboratory of Rubber-PlasticsQingdao University of Science&TechnologyQingdao 266042China Petrochemical Research Institute PetroChinaBeijing 102206China School of Chemical Engineering Changchun University of TechnologyChangchun 130012China

Through neodymium-mediated coordinative chain transfer copolymerizaiton(CCTcoP),polyisoprenes bearing dual hydroxylated mini-blocky chain-ends were prepared via a three-step *** studies revealed that,the polymerization demonstrated typical features of CCTcoP across the whole polymerization process,i.e.,quasi-living polymerization characteristic,tunable molecular weights,narrow molecular weight distributions,and atom *** to previously reported CCTP homopolymerization systems,the presence of oxygen-containing IpOAl polar comonomer slowed down chain transfer rates obviously,rendering slightly higher molecular weights of the resultant PIps and smaller Np(number of polymer chains per Nd atom)***,to mimic the structure of natural rubber,the hydroxyl end groups can be facilely modified into phosphonate,amide,and UPy,whose structures were further confirmed by NMR *** these functionalities could greatly improve the hydrophilic properties of the polymers,as revealed from the significantly reduced static water contact angles.

关键词： Functional polyisoprene Neodymium Coordinative chain transfer polymerization Synthetic rubber

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剪切增稠液微胶囊的制备与性能研究

中国塑料 2024年第1期38卷 35-41页

作者：俞波赵炳乾倪叶舟钱坤俞科静陈坤林江南大学生态纺织教育部重点实验室江苏无锡214122

本研究以壳聚糖材料为壁材,剪切增稠液(STF)为芯材,通过单凝聚法制备了STF微胶囊(STF MCs)。通过单因素实验研究,确定了微胶囊的制备工艺参数:司盘80(Span 80)与吐温80(Tween 80)作为分散剂,复配比例为3∶1;乳化剂用量为11%,核壳比为2...

本研究以壳聚糖材料为壁材,剪切增稠液(STF)为芯材,通过单凝聚法制备了STF微胶囊(STF MCs)。通过单因素实验研究,确定了微胶囊的制备工艺参数:司盘80(Span 80)与吐温80(Tween 80)作为分散剂,复配比例为3∶1;乳化剂用量为11%,核壳比为2.1,搅拌速度为600 r/min,反应温度为60℃;体系的油水比为1∶2.在此条件下制得的STF MCs呈较为规整的球形,粒径分布较为均匀,且主要集中在3μm左右。结果表明,碳纳米管的引入有效改善了STF的流变性能。掺杂CNTs的STF体系具有更小临界剪切速率,更快的黏度突变,并且峰值黏度增加近一倍;芯材和微胶囊乳液的红外光谱大部分都一致,表明壳聚糖成功吸附在芯材液滴表面,实现了对STF的包封。壁材对芯材STF起到了保护作用,提升了芯材STF的热稳定性。

关键词：剪切增稠液微胶囊单凝聚法单因素筛选防护性能

TPI/NR并用胶在全钢子午线轮胎胎面胶中的应用

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弹性体 2010年第1期20卷 61-64页

作者：齐立杰赵志超黄宝琛青岛科技大学橡塑材料与工程教育部重点实验室山东青岛266042

对反式-1,4-聚异戊二烯(TPI)/天然橡胶(NR)并用胶体系配方进行优化。结果表明,在TPI/NR(15/85)并用胶体系中,加入2.芳烃油,0.5份硫化剂DTDM,1.5份抗返原剂WK901,混炼胶硬度适中,利于后续半成品的加工;TPI/NR并用胶的硫化特性基本不变,... 详细信息

对反式-1,4-聚异戊二烯(TPI)/天然橡胶(NR)并用胶体系配方进行优化。结果表明,在TPI/NR(15/85)并用胶体系中,加入2.芳烃油,0.5份硫化剂DTDM,1.5份抗返原剂WK901,混炼胶硬度适中,利于后续半成品的加工;TPI/NR并用胶的硫化特性基本不变,在保持基本配方物理机械性能的基础上,具有低生热性,优异的耐磨性能和耐屈挠性能,较低的滚动阻力,是一种较为理想的全钢子午线轮胎胎面配合。

关键词：反式-1,4-聚异戊二烯耐磨耗性能伸张疲劳系数胎面胶压缩温升

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纤维素氧化体系的研究进展

纤维素科学与技术 2009年第3期17卷 59-64页

作者：李琳赵帅胡红旗青岛科技大学橡塑材料与工程教育部重点实验室山东青岛266042 中国科学院广州化学研究所纤维素化学重点实验室广东广州510650

概述了纤维素的选择性氧化及其氧化体系的研究进展,主要介绍了2.2.6,6-四甲基哌啶-1-氧自由基(TEMPO)类复合氧化体系氧化纤维素的降解机理,针对该降解机理提出抑制降解的基本方法。与其他氧化体系相比,过碘酸和过碘酸盐对纤维素C2.C3... 详细信息

概述了纤维素的选择性氧化及其氧化体系的研究进展,主要介绍了2.2.6,6-四甲基哌啶-1-氧自由基(TEMPO)类复合氧化体系氧化纤维素的降解机理,针对该降解机理提出抑制降解的基本方法。与其他氧化体系相比,过碘酸和过碘酸盐对纤维素C2.C3位仲羟基的选择性氧化能力极强,TEMPO系列氮氧基类氧化体系对纤维素C6位伯羟基的选择性氧化能力极强,但纤维素在各个氧化体系中的降解非常剧烈,纤维素在各个氧化体系中的降解机理有所不同。

关键词：氧化纤维素选择性氧化氧化降解