俞炜教授

电子邮件:wyu@sjtu.edu.cn
通讯地址:上海市东川路800号化学化工学院A楼501室

  • 教育背景

    1992-1996:上海交通大学应用化学系,本科

    1996-2001:上海交通大学化学化工学院,博士(材料学)

  • 工作经历

    2001-2002:加拿大Laval大学化工系和大分子研究中心,博士后

    2003-2004:上海交通大学化学化工学院,讲师

    2005-2008:上海交通大学化学化工学院,副教授

    2006至今 :上海交通大学流变学研究所,常务副所长

    2009至今 :上海交通大学化学化工学院,教授,博士生导师

  • 研究方向

    复杂流体流变学与动力学: 
    polymer melts and solutions, block copolymers, polymer composites/nanocomposites, emulsions, suspensions, gels
    化学流变学: 
    kinetics and mechanism of chemical reactions in polymeric systems under flow field
    相转变与临界现象:
    liquid-solid transition, liquid-liquid phase separation, crystallization of polymers
    本构模型与多尺度计算机模拟: 
    rheological constitutive theory for polymer melts/polymer blends/composites, multiscale simulation of polymer blend/composites, simulation of polymer processing
    高性能聚合物材料: 
    microporous membranes, polymer alloys, vitrimers, polymer foams, gels

  • 科研项目

    国家杰出青年科学基金、国家自然科学基金重大项目、国家重点基础研究发展计划(973计划)、国家自然科学基金重点项目、国家自然科学基金面上项目等。



  • 代表性论文专著

    2022

    1. Jun Zhao, Zhaoming Zhang, Lin Cheng(程林), Ruixue Bai, Dong Zhao, Yongming Wang, Wei Yu, and Xuzhou Yan*, “Mechanically interlocked vitrimers”, J. Am. Chem. Soc. 2022, 144, 2, 872-882 https://doi.org/10.1021/jacs.1c10427

    2. Handing Wang, Xiang Yan, Xin Tang, Yulong Ma, Xiaoqiang Fan, Wei Li*, Wei Yu, Jingdai Wang, and Yongrong Yang, “Contribution of the initially entangled state and particle size to the sintering kinetics of UHMWPE”, Macromolecules 2022, 55, 1310-1320 https://doi.org/10.1021/acs.macromol.1c02058

    3. Yanjie Wang(王艳洁), Wei Yu, Sijun Liu*, “Physically cross-linked gellan gum/hydrophobically associated polyacrylamide double network hydrogel for cartilage repair”, European Polymer Journal 2022, 167, 111074 https://doi.org/10.1016/j.eurpolymj.2022.111074

    4. Zhaoming Zhang, Jun Zhao, Zhewen Guo, Hao Zhang(张昊), Hui Pan, Qian Wu, Wei You(尤伟), Wei Yu, Xuzhou Yan*, “Mechanically interlocked networks cross-linked by a molecular necklace”, Nature Comm. 2022, 13, 1393 https://doi.org/10.1038/s41467-022-29141-7 

    5. Ce Shang(尚策), Zhongqiang Xiong(熊钟强), Sijun Liu, Wei Yu*, “Molecular dynamics of azobenzene polymer with photoreversible glass transition”, Macromolecules 2022, 55, 3711-3722 https://doi.org/10.1021/acs.macromol.2c00073

    6. Mingchao Ma(马鸣超), Wenzhi Cui(崔文志), Yunlong Guo, Wei Yu*, “Adsorption-desorption effect on physical aging in PMMA-silica nanocomposites”, Polymer, 2022, 255, 125124 https://doi.org/10.1016/j.polymer.2022.125124

    7. Marouen Zammali, Sijun Liu*, Wei Yu, “A Flexible, Transparent, Ultralow Detection Limit Capacitive Pressure Sensor”, Adv. Mater. Interfaces 2022, 9, 2200015 https://doi.org/10.1002/admi.202200015

    8. 王一名,尤伟,俞炜*聚甲基丙烯酸甲酯/聚醋酸乙烯酯/纳米二氧化硅体系的相分离行为研究高分子学报202253(08)962-972.

    https://doi.org/10.11777/j.issn1000-3304.2022.22041 

    9. Lin Cheng#(程林), Xinyang Zhao#(赵鑫阳), Jun Zhao, Sijun Liu, Wei Yu*, “Structure and Dynamics of Associative Exchange Dynamic Polymer Networks”, Macromolecules 2022, 55(15), 6598–6608. https://doi.org/10.1021/acs.macromol.2c01057

    10. Zhongqiang Xiong(熊钟强), Wei Yu*, “A nonlinear constitutive model for entangled symmetric dendrimers”, J. Rheol. 2022, 66(5), 907-923. https://doi.org/10.1122/8.0000483

    11. Luoxing Xiang, Siqi Yuan, Faxing Wang, Zhihan Xu, Xiuhong Li, Feng Tian, Liang Wu, Wei Yu, and Yiyong Mai*, “Porous Polymer Cubosomes with Ordered Single Primitive Bicontinuous Architecture and Their Sodium–Iodine Batteries”, J. Am. Chem. Soc. 2022, 144(34), 15497-15508. https://doi.org/10.1021/jacs.2c02881

    12. Xiang Liu(刘香), Wenzhi Cui(崔文志), Wei Yu*, “Interfacial Chain Entanglements Induced Melt Memory Effect in Poly(ε-caprolactone)/Silica Nanocomposites”, Chinese J. Polym. Sci. 2022, 40 (11), 1451-1465. https://doi.org/10.1007/s10118-022-2814-1 

    13. Guangfeng Li#, Jun Zhao#, Zhaoming Zhang,* Xinyang Zhao(赵鑫阳), Lin Cheng(程林), Yuhang Liu, Zhewen Guo, Wei Yu, and Xuzhou Yan*, “Robust and Dynamic Polymer Networks Enabled by Woven Crosslinks”, Angew. Chem. Int. Ed. 2022, e202210078. https://doi.org/10.1002/anie.202210078

    14. Hao Zhang(张昊), Wei You, Fenggang Bian, and Wei Yu*, “Heterogeneous Percolation in Poly(methylvinylsiloxane)/Silica Nanocomposites: The Role of Polymer–Particle Interaction”, Macromolecules 2022, 55, 19, 8834–8845 https://doi.org/10.1021/acs.macromol.2c01615

    15. Xue Yang#, Lin Cheng#(程林), Zhaoming Zhang#, Jun Zhao, Ruixue Bai, Zhewen Guo, Wei Yu*, and Xuzhou Yan*, "Amplification of integrated microscopic motions of high-density [2]rotaxanes in mechanically interlocked networks", Nature Comm. 2022, 13, 6654 https://doi.org/10.1038/s41467-022-34286-6 


  • 荣誉奖励

    第6届“冯新德高分子奖”提名奖 (2012年)
    教育部新世纪优秀人才计划 (2011年)
    第5届“冯新德高分子奖”提名奖 (2011年)
    Polymer Processing Society, Morand Lambla Award (2010年)
    上海交通大学晨星学者奖励(2010年)
    中国化学会青年化学奖(2009年)
    上海高校优秀青年教师(2008年)
    上海交通大学优秀教师三等奖(2006年)
    中国流变学青年奖(2005年)

  • 人才需求

    课题组常年招聘具有高分子化学、材料化学、化学工程、高分子物理、高分子加工、流变学、力学等相关专业背景的博士后,待遇从优,欢迎来信咨询。

  • 文件共享

    非线性流变学:大振幅振荡剪切(large amplitude oscillatory shear, LAOS)

    1.      振荡剪切流动

    当给样品施加正弦的应变或应力时,所产生的流动称为振荡剪切流动,流动由所施加应变或应力的幅度和频率控制。所施加应变幅度很小时,样品产生的应力响应是有相位角的正弦信号;当施加应变幅度增加时,应力响应逐渐偏离正弦波。随着应变幅度的增加,应力-应变、应力-应变速率曲线(Lissajous曲线)逐渐偏离椭圆。

    1642239420881247.png

    Carbopol微凝胶在不同幅度振荡应力下的应力-应变(a)和应力-应变速率(b)Lissajous曲线

    2.      傅里叶变换流变学

    解析振荡剪切行为最直接的方法是利用傅里叶变换,将时间域的信号转换到频率域,由倍频信号的强度判断偏离正弦信号的程度[1]。由于对称性,剪切应力应该只出现奇数倍频,而法向应力差只出现偶数倍频[3-4]。利用基频信号定义的是应变趋于零时的线性黏弹性函数(对应于小振幅振荡剪切SAOS),类似的可以定义高阶倍频下的特征模量[11],最常用的是三阶倍频特征函数(对应于中等振幅振荡剪切MAOS)。傅里叶变换流变学的缺点在于高阶倍频下的特征函数缺乏明确的物理意义。大量的研究表明,MAOS和LAOS特征函数能够比SAOS特征函数更敏感的表示出材料结构的细微差别[6,7,8]。

    1642239437838130.png

    剪切应力随时间的变化(a)及其傅里叶变换(b),

    第一法向应力差随时间的变化(c)及其傅里叶变换(d),

    烯烃嵌段共聚物的储能模量G’11,0(e)与三倍频特征函数Q3,0(f)

    3.      几何平均分析

    另一种解析LAOS行为的方法是几何平均方法[5],即通过闭合应力-应变曲线对应力或应变取算术平均,得到平均应力-应变曲线和应力-平均应变曲线;对应力-应变速率曲线可得到类似的平均曲线。几何平均曲线在特定条件下可以通过Chebyshev多项式建立与傅里叶变换流变学的关系[2]。几何平均方法不依赖于LAOS的实验方法(控制应变或控制应力),特别适合复杂流体(如屈服应力流体)屈服转变[10]、壁面滑移[9]等方面研究。

    1642239460819626.png

    应力-应变曲线的几何平均(a)和应力-应变速率曲线的几何平均(b),

    表征屈服转变的应力分岔(c),平均应力-应变速率关系确定壁面滑移特征(d)

    代表性论文

    1. Jianye Liu, Wei Yu*, Chixing Zhou, “Evaluation on the degrading behavior of melt polyolefin elastomer with dicumyl peroxide in oscillatory shear flow by Fourier transform rheology”, Polymer, 2008, 49, 268-277 https://doi.org/10.1016/j.polymer.2007.11.014

    2. Wei Yu*, Peng Wang, Chixing Zhou, "General stress decomposition in nonlinear oscillatory shear flow", Journal of Rheology, 2009, 53(1), 215-238 https://doi.org/10.1122/1.3037267

    3. Ying Guo, Wei Yu*, Yuanze Xu, Chixing Zhou,"Correlations between Local Flow Mechanism and Macroscopic Rheology in Concentrated Suspensions under Oscillatory Shear", Soft Matter, 2011, 7, 2433-2443 https://doi.org/10.1039/C0SM00970A

    4. 杜宇,杨凯,俞炜*,周持兴,触变/非触变水凝胶的傅里叶变换流变学研究,高分子学报,2012, 12, 1376-1382 http://web.gfzxb.org/article/doi/10.3724/SP.J.1105.2012.12197 

    5. Wei Yu*, Yu Du, Chixing Zhou, "A New Geometric Decomposition in Nonlinear Oscillatory Shear", Journal of Rheology, 2013, 57, 1147-1175 https://doi.org/10.1122/1.4805093

    6. Peng He, Wei Yu*, Chixing Zhou, "Mesophase Separation Transitions in Polydisperse Olefin Multiblock Copolymer Melts", Macromolecules, 2014, 47, 807-820 https://doi.org/10.1021/ma402330a

    7. Zhijun Nie, Wei Yu*, Chixing Zhou, “Nonlinear rheological behavior of multiblock copolymers under large amplitude oscillatory shear”, Journal of Rheology, 2016, 60(6), 1161-1179. https://doi.org/10.1122/1.4961483

    8. Kai Yang, Jun Wang, Wei Yu*, "Two dimensional mechanical correlation analysis on nonlinear oscillatory shear flow of yield stress fluids", Korean-Austrialian Rheology Journal, 2016, 28(3), 175-180 https://doi.org/10.1007/s13367-016-0017-4 

    9. Kai Yang, Wei Yu*, “Dynamic wall slip behavior of yield stress fluids under large amplitude oscillatory shear”, Journal of Rheology, 2017, 61(4), 627-641 https://doi.org/10.1122/1.4982704

    10. Kai Yang, Zhiwei Liu, Jun Wang, Wei Yu*, Chixing Zhou, “Stress bifurcation in large amplitude oscillatory shear of yield stress fluids”, Journal of Rheology, 2018, 62, 89-106  https://doi.org/10.1122/1.4986062

    11. Zhiwei Liu, Zhongqiang Xiong, Zhijun Nie, Wei Yu*, “Correlation between linear and nonlinear material functions under large amplitude oscillatory shear”, Physics of Fluids, 2020, 32, 093105 https://doi.org/10.1063/5.0021792



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