Sep 2016 – Present Dean of The Petroleum and Petrochemical College, Chulalongkorn University
July 2012 – June 2016 President of Polymer Society of Thailand
Noveber 2012 – Present National Science and Technology Development Agency (NSTDA), National Nanotechnology Center (NANOTEC), Nanofunctional Textile Laboratory Consultant
Oct. 2009 - Present Full Professor in Polymer Science and Engineering, The Petroleum and Petrochemical College, Chulalongkorn University
Oct. 2007- Sep. 2008 Associate Dean of Research Affairs, The Petroleum and Petrochemical College, Chulalongkorn University
Oct. 2004 - Oct. 2007 Deputy Director of Research Affairs, The Petroleum and Petrochemical College, Chulalongkorn University
Apr. 2003 - Oct. 2009 Associate Professor of The Petroleum and Petrochemical College, Chulalongkorn University
Jun. 2002 - Present Vice Center-Head, Center for Chitin-Chitosan Biomaterials, Chulalongkorn University
Oct. 2004 – Apr. 2005 Visiting Professor, Venture Business Laboratory, Hiroshima University, Japan
Nov. 2002–May 2003 Visiting Scientist, Department of Macromolecular Science and Engineering, Case Western Reserve University, USA
Oct. 1999 - Apr. 2003 Assistant Professor of The Petroleum and Petrochemical College, Chulalongkorn University
Oct. 2000 - Oct. 2002 Assistant Director for Research Affairs in The Petroleum and Petrochemical College, Chulalongkorn University
Oct. 1999-Mar. 2000 Visiting Scientist for Japan Society of Scientific Promotion (JSPS), Department of Macromolecules, Osaka University, Osaka, Japan
Oct. 1997 - Mar. 1998 Visiting Lecturer at Department of Chemical Engineering, Thammasart University
Jun. 1997- Sep.1997 Visiting Lecturer at Department of Chemical Engineering, Khon Kaen University, Khon Kaen
Oct. 1996 - Mar. 1997 Visiting Lecturer at Department of Chemical Engineering, Thammasart University
Apr. 1991 -Sep. 1999 Lecturer of The Petroleum and Petrochemical College, Chulalongkorn University (April 1992-Mar. 1995 Leave for Ph.D. Degree in Japan)
