YU Jian, Ph.D. Associate Professor 
 

Beijing National Laboratory for Molecular Sciences
Key Laboratory of Engineering Plastics, 
Joint Laboratory of Polymer Science and Materials, 
Institute of Chemistry, Chinese Academy of Sciences (ICCAS)

Tel:	+86-10-62613251
Fax:	+86-10-62613251
E-mail:	yuj@iccas.ac.cn
Address:	Institute of Chemistry, The Chinese Academy of Sciences  Beijing 100190, P.R. China

PROFESSIONAL BACKGROUND

Born in 1972
1989-1993, BS, Department of Chemical Engineering, Zhejiang University
1993-1996, MS, Department of Polymer Science and Engineering, Zhejiang University
1996-1999, Ph.D, Institute of Chemistry, CAS
1999.10-2001.10, Postdoctoral research, College of Chemistry and Molecular Engineering, Peking University
2002.4-, Associate Professor, CAS-KLEP, Institute of Chemistry, CAS

SCIENTIFIC RESEARCH

• The relationship between the structure and properties of polyolefin

• Microcellular foaming of high melt strength polypropylene

• Supercritical fluids assisted crystallization and crytal transition of semi-crystalline polymers in bulk and thin film

SELECTED PUBLICATION

1. 徐鸿, 仝芳芳,  余坚,* 文利雄, 张军*, 何嘉松. Synergistic effect of 1-dodecyl-3-methylimidazolium hexafluorophosphate ionic liquid and montmorillonite on microcellular foaming behavior of poly(methyl methacrylate) by supercritical CO2, Industrial & Engineering Chemistry Research, 2013, 52(34): 11988-11995. http://dx.doi.org/10.1021/ie400997k

2. 王德修, 余坚, 张金明, 何嘉松, 张军. Transparent bionanocomposites with improved properties from poly(propylene carbonate) (PPC) and cellulose nanowhiskers (CNWs), Composites Science and Technology, 2013, 85: 83-89. http://dx.doi.org/10.1016/j.compscitech.2013.06.004

3. 宋洪赞, 牛艳华, 余坚, 张军, 王志刚, 何嘉松. Preparation and morphology of different types of cellulose spherulites from concentrated cellulose ionic liquid solutions, Soft Matter, 2013, 9(11): 3013-3020. http://dx.doi.org/10.1039/c3sm27320b

4. 仝芳芳, 徐鸿, 余坚,* 文利雄*, 张军, 何嘉松. Plasticization of [C12MIM][PF6] ionic liquid on foaming performance of poly(methyl methacrylate) in supercritical CO2, Industrial & Engineering Chemistry Research, 2012, 51(38): 12329-123369. http://dx.doi.org/10.1021/ie301409h

5. 仝芳芳, 徐鸿, 余坚*, 文利雄*, 张军, 何嘉松.相容的聚甲基丙烯酸甲酯/[C12MIM][PF6]离子液体体系在超临界CO2中的发泡性能, 高等学校化学学报, 2012, 33(1): 172-175.

6. Xu H, Tong FF, Yu J*, Wen LX, Zhang J*, He J. A one-pot method to prepare transparent poly(methyl methacrylate)/montmorillonite nanocomposites by imidazolium-based ionic liquids. Polymer International 2012, 61(9): 1382-1388. http://dx.doi.org/10.1002/pi.4217

7. Tong FF, Xu H, Yu J*, Wen LX*, Zhang J, He J. 相容的聚甲基丙烯酸甲酯/[C12MIM][PF6]离子液体体系在超临界CO2中的发泡性能. 高等学校化学学报 33(1): 172-175, 2012. 
   http://dx.doi.org/10.3969/j.issn.0251-0790.2012.01.029 
    

8. Zhang JM, Lv YX, Luo N, Wu J, Yu J, He J, Zhang J*. 离子液体在纤维素化学中的应用研究新进展. 高分子通报(10): 138-153, 2011. 
    

9. Lan QF, Yu J*, Zhang J*, He J. Enhanced crystallization of bisphenol-A polycarbonate in thin and ultrathin films by supercritical carbon dioxide.Macromolecules 44(14): 5743-5749, 2011. 
   http://dx.doi.org/10.1021/ma102797r
    

10. Lv YX, Li XY, Mi QY, Wang DX, Yu J*, Zhang J*. 以纤维素/AmimCl溶液制备纤维素气凝胶. 中国科学: 化学 41(8): 1331-1337, 2011. 
    http://dx.doi.org/10.1360/032011-214 
     

11. Lan QF, Yu J*, He J, Maurer FHJ, Zhang J. Thermal Behavior of Poly(L-lactide) Having Low L-Isomer Content of 94% after Compressed CO2 Treatment.Macromolecules 43: 8602–8609, 2010. 
    http://dx.doi.org/10.1021/ma101473r
     

12. Li BX, Yu J*, Ding Y*, Zhang J, He J. [C14MIM]Br离子液体对聚丙烯超临界CO2发泡性能的影响. 高等学校化学学报 31: 861–863, 2010. 
     

13. Anderson A, Zhai WT, Yu J, He J, Maurer FHJ. Free volume and crystallinity of poly(ethylene naphthalate) treated in pressurized carbon dioxide.Polymer 51: 146-152, 2008. 
    http://dx.doi.org/10.1016/j.polymer.2009.11.019
     

14. Yu J, He J. 超临界CO2技术制备微孔聚合物中的基本问题. 中国科学：化学 40: 1–15, 2010. 
     

15. Zhai WT, Wang HY, Yu J*, Dong JY*, He J. Foaming Behavior of Polypropylene/Polystyrene Blends Enhanced by Improved Interfacial Compatibility. J Polym Sci, Polym Phys Ed 46: 1641-1651, 2008. 
    http://dx.doi.org/10.1002/polb.21498
     

16. Zhai WT, Wang HY, Yu J*, Dong JY*, He J. Foaming behavior of isotactic polypropylene in supercritical CO2 influenced by phase morphology via chain grafting. Polymer 49:3146-3156, 2008. 
    http://dx.doi.org/10.1016/j.polymer.2008.05.018 
     

17. Zhai WT, Wang HY, Yu J*, Dong JY*, He J. Cell coalescence suppressed by crosslinking structure in polypropylene microcellular foaming. Polym Eng Sci 48:1312-1321, 2008. 
    http://dx.doi.org/10.1002/pen.21095 
     

18. Zhai WT, Yu J*, He J. Ultrasonic irradiation enhanced cell nucleation: An effective approach to microcellular foams of both high cell density and expansion ratio. Polymer 49:2430-2434, 2008. 
    http://dx.doi.org/10.1016/j.polymer.2008.04.002 
     

19. Ma WM, Zhai WT, Yu J, He J. Establishing a three-dimensional diagram with solubility parameter representing the general behavior of crystallisation for amorphous poly(ethylene 2,6-naphthalate). Polym Inter 56:1298-1304, 2007. 
    http://dx.doi.org/10.1002/pi.2284 
     

20. Zhai WT, Yu J*, Ma WM, He J. Cosolvent Effect of Water in Supercritical Carbon Dioxide Facilitating Induced Crystallization of Polycarbonate. Polym Eng Sci 47:1338-1343, 2007. 
    http://dx.doi.org/10.1002/pen.20816
     

21. Ma WM, Yu J, He J. Competitive Influence of Atactic Polystyrene and Supercritical Carbon Dioxide on the Conformation of Syndiotactic Polystyrene.J Polym Sci, Polym Phys Ed 45: 1755-1764, 2007. 
    http://dx.doi.org/10.1002/polb.21047
     

22. Ma WM, Yu J, He J, Wang DJ. Stability of form II of syndiotactic polypropylene confirmed by cold and melt crystallization in supercritical carbon dioxide. Polymer 48: 1741-1748, 2007. 
    http://dx.doi.org/10.1016/j.polymer.2007.01.035
     

23. Zhai WT, Yu J*, Ma WM, He J. Influence of long-chain branching on the crystallization and melting behavior of polycarbonates in supercritical CO2.Macromolecules 40(1): 73-80, 2007. 
    http://dx.doi.org/10.1021/ma062181g
     

24. Li G, Liao X, Sun XH, Yu J, He J. 超临界二氧化碳流体环境中制备导电聚吡咯复合材料 (Preparation of conductive PPy composites under supercritical carbon dioxide circumstance). 高等学校化学学报 (Chem J Chin Univ) 27(4): 771-774, 2006. 
     

25. Ma WM, Yu J, He J. 聚合物在高压CO2下的结晶行为 (Crystallization behavior of polymer in compressed CO2, Review). 高分子通报 (Polym Bull) (3): 17-23, 2006. 
     

26. Li G, Sun XH, Liao X, Yu J*, Zhang J, He J. Supercritical Carbon Dioxide Assisted Preparation of Conductive Polypyrrole/Cellulose Diacetate Composites. J Appl Polym Sci 100(6): 4575-4580, 2006. 
    http://dx.doi.org/10.1002/app.22569
     

27. Zhai WT, Yu J*, WU LC, Ma WM, He J. Heterogeneous nucleation uniformizing cell size distribution in microcellular nanocomposites foams. Polyme47(21): 7580-7589, 2006. 
    http://dx.doi.org/10.1016/j.polymer.2006.08.034
     

28. Ma WM, Yu J, He J. Empty delta crystal as an intermediate form for the d to g transition of syndiotactic polystyrene in supercritical carbon dioxide.Macromolecules 38(11): 4755-4760, 2005. 
    http://dx.doi.org/10.1021/ma050488u
     

29. Ma WM, Yu J, He J. Stability of crystal forms of syndiotactic polystyrene correlated with their formation in different media having different solubility parameters. Polymer 46(24): 11104-11111, 2005. 
    http://dx.doi.org/10.1016/j.polymer.2005.09.002
     

30. Liao X, He J, Yu J. Process analysis of phase transformation of alpha to beta-form crystal of syndiotactic polystyrene investigated in supercritical CO2. Polymer 46(15): 5789-5796, 2005. 
    http://dx.doi.org/10.1016/j.polymer.2005.04.062
     

31. Ma WM, Yu J, He J. Empty delta crystal as an intermediate form for the to transition of syndiotactic polystyrene in supercritical carbon dioxide.Macromolecules 38 (11): 4755-4760, 2005. 
    http://dx.doi.org/10.1021/ma050488u
     

32. Ma WM, Yu J, He J. Supercritical fluid assisted crystal transition of gamma-form crystal in syndiotactic polystyrene. Macromolecular Rapid Communications 26 (2): 112-115, 2005. 
    http://dx.doi.org/10.1002/marc.200400431
     

33. Liu CY, Yu J, He JS, Liu W, Sun CY, Jing ZH. A reexamination of G(N)(0) and M-e of syndiotactic polypropylenes with metallocene catalysts.Macromolecules 37 (24): 9279-9282, 2004. 
    http://dx.doi.org/10.1021/ma048743i
     

34. Ma WM, Yu J, He J. Direct formation of gamma form crystal of syndiotactic polystyrene from amorphous state in supercritical CO2. Macromolecules37 (18): 6912-6917, 2004. 
    http://dx.doi.org/10.1021/ma0491715
     

35. Sun XH, Liu CY, Yu J, Li G, He JS. Preparation and characterization of microcellular cyclic olefin copolymer blends using supercritical CO2. Acta Polymerica Sinica (1): 132-136, 2004.

36. Liu CY, Yu J, Sun XH, Zhang J, He JS. Thermal degradation studies of cyclic olefin copolymers. Polymer Degradation and Stability 81 (2): 197-205, 2003.

37. Yu J, Li M, Yang JY, Gu ZW, Cao WX, Feng XD. Synthesis of 3-benzyl-glyceric acid: A key intermediate of a novel cyclic ester monomer. Chinese Journal of Polymer Science 20 (2): 177-180, 2002.

38. Yang JY, Yu J, Li M, Gu ZW, Feng XD. Copolymerization and determination of monomer reactivity ratios of DL-lactide with 3-benzyloxymethyl-1,4-dioxane-2,5-dione. Chinese Journal of Polymer Science 20 (5): 413-417, 2002.

39. Yang JY, Yu J, Pan HZ, Gu ZW, Cao WX, Feng XD. Synthesis of novel hydrophilic biodegradable polyester with functionalized side chain groups. Chinese Journal of Polymer Science 19 (5): 509-516, 2001.

40. Yang JY, Yu J, Li M, Pan HZ, Gu ZW, Cao WX, Feng XD. A novel biodegradable polyester with hydrophilic pendant group - Synthesis and ring-opening polymerization of 3-benzyloxymethyl-1,4-dioxane-2,5-dione. Acta Chimica Sinica 59 (10): 1809-1812, 2001.

41. Cao K, Yu J, Li BG, Li BF, Pan ZR. Micron-size uniform poly(methyl methacrylate) particles by dispersion polymerization in polar media 1. Particle size and particle size distribution. Chemical Engineering Journal 78 (2-3): 211-215, 2000.

42. Yu J, He JS. Crystallization kinetics of maleic anhydride grafted polypropylene ionomers. Polymer 41 (3): 891-898, 2000.

43. Yu J, He JS. The isothermal crystallization behavior of maleic anhydride graft polypropylene and its ionomers. Acta Polymerica Sinica (1): 87-92, 1999.

44. Yu J, He JS. Non-isothermal crystallization behavior of maleic anhydride graft polypropylene and its ionomers. Acta Polymerica Sinica (5): 513-519, 1999.