Thermodynamics and dynamic properties of polymer materials, precise analysis of polymers, and characteristics of polymer thin films.

1984~1985 Wisconsin University Researcher
1985~1986 National Bureau of Standards Visiting Researcher
1986~1988 Korea Research Institute of Chemical Technology Research Engineer
1988~ POSTECH Chemistry Professor
1994~1996 POSTECH dean of student director
1997~1998 Minnesota University Visiting professor
2011~2015 POSTECH Executive vice-president
1999~2002 Bull. Korean Chem. Soc./ Journal of the Korean Chemical Society Executive Editor
2000~ J. Polym. Sci. Polym. Phys. Ed. Editorial advisor
2001~2004 Macromolecular Research editor-in-chief
2002 Korean Chemical Society Chairman of the International Cooperation Committee.
2003 The Polymer Society of Korea The branch manager of Daegu and Gyeongsangbuk-do.
2004~ Eur. Polym. J. Editorial advisor.
2005~2009 Macromol. Chem. Phys. Editorial advisor.
2005~2009 Macromol. Rapid. Commun. Editorial advisor.
2006~2009 IUPAC Polymer Chemistry Division Titular Member
2006 The Polymer Society of Korea, President of Education Committee
2007 The Polymer Society of Korea President of Academic Committee
2008 Korean Chemical Society Polymer Chemistry department president
2009~2011 Macromolecules Editorial advisor.
2011 The Polymer Society of Korea vice president
2011 Prog.polym.Sci. Editorial advisor.
2012 The Polymer Society of Korea president

1994 Korean Chemical Society Polymer Chemistry Academic Progress Award
2001 The Korean Federation of Science and Technology Societies Best Paper Award
2002 The Polymer Society of Korea Macromolecular Research Award
2005 Korean Chemical Society Lee Tae Kyu Academic Award.
2009 Scientist of the Month Award.
2009 The Polymer Society of Korea, Sangam polymer Award
2011 American Physical Society Fellow
2015 The Polymer Society of Japan International Award