Main Menu
    About  
    Administration  
    Departments  
    Staff  
    Researches  
    Services & Support  
    News  
    Contact Us  
   
 
Navigator: Home > Department > Department of Materials Science and Technology > Staff > SA-AD RIYAJAN
  Name : Assoc. Prof. Dr. SA-AD RIYAJAN
Academic Position : Associate Proffessor
E-mail : saadriyajan@hotmail.com
 




B.Sc. () , Thailand, 1999 
M.Sc. (Science and Technology Polymer) Mahidol University , Thailand, 2001 
Ph.D. (Science and Technology Polymer) Mahidol University , Thailand, 2006 

 
 


Department of Materials Science and Technology
Faculty of Science, Prince of Songkla University
Hatyai, Songkhla, Thailand. 90112.



  1. Riyajan, S., Sakdapipanich, J.T., Yasuyuki, T. Controlled Degradation of Cured Natural Rubber by Encapsulated Benzophenone as a Photosensitizer, Journal of Applied Polymer Science 90(1), 297-305 (2003)
  2. Riyajan, S., Sakdapipanich,  J.T. Cationic Cyclization of Purified Natural Rubber by Using Sulfuric Acid,  Kautschuk Gummi Kunststoffe 59, 104-109 (2006)
  3. Riyajan, S., Sakdapipanich, J.T. Cationic Cyclization of Purified Natural Rubber with a Trimethylsilyl Triflate as a Novel Catalyst, Journal of Applied Polymer Science, 105(2) 664-672 (2007)
  4. Riyajan, S., Tanaka, Y., Sakdapiphanich, J.T. Partially Cyclized Deproteinized Natural Rubber in Latex via Combination of Benzotrichloride and Sulfuric Acid System, Rubber chemistry and technology, 80(2) 365-377 (2007) 
  5. Riyajan, S. Swell Behavior Affecting Degradation of Purified Natural Rubber, Kaustschuk Gummi Kunststoffe, 60(3), 94-100 (2007)
  6. สอาด ริยะจันทร์  การควบคุมการสลายตัวของผลิตภัณฑ์ยางธรรมชาติโดยวิธีแสงยูวี วารสารวิชาการ พัฒนาเทคนิคศึกษา 60, 16-19 (2549)
  7. สอาด ริยะจันทร์  หางน้ำยาง หรือยางสกิมที่ได้จากการเตรียมน้ำยางเข้มข้นจากต้นยางธรรมชาติวารสารวิชาการ พัฒนาเทคนิคศึกษา 62, 16-19 (2550)



  1. Polymer Degradation
  2. Natural Rubber
  3. Chemical Modification
  4. Polymer Composite
  5. Encapsulation<
  6. Agricultural Polymer
  7. Electrical Polymer
  8. Polymer colloids

Recent Grant
  1. Study the Basic Model for Controlling Release of Neem by using Natural Rubber Foam (2007-2009)  480,000 bath, supported by Thailand research fund (MRG5080406)
  2. Surface Modification of Natural Rubber Sheet Via Chemical Modification (2007-2009) 500,000 bath, supported by Thailand Research Fund (SCI5111990038s)
  3. Effect of Chemicals on Fresh Natural Rubber Latex, Concentrated Natural Rubber Latex, and Coagulation of Skim Latex for Solving of Improving Property of Glove and Uncoagulation of Skim Latex (2007-2009), 300,000 baht, supported by from Thailand Research Fund (MRG-OSMEP505S207)
  4. To Study the Preparation of New Rubber Obtained from Cyclized Rubber Derived from Low Protein Component and Kinetic Reaction of Cyclized Rubber (2006-2007) 50,000 baht supported by Faculty of Science, Price of Songkla University
  5. Study the Cyclization and Degradation of Natural Rubber (2003-2005) 300,000 baht supported by Thailand research fund
 
Conference Proceeding
  1. Riyajan, S., Sakdakdapiphanich, J.,  Suchiva, K., Limchareon, S.,  Controlled Degradation of Cured Natural Rubber by Encapsulated  Benzophenone as a Photosensitizer , 27th Congress on Science and  Technology of Thailand, 16-18 October 2001, Lee Gardens Plaza Hotel,  Hat Yai, Songkhla, Thailand.
  2. Riyajan, S., Sakdapiphanich, J. Pukkate, N., Tanaka, Y., Chemical Modification of Natural Rubber by Cyclization Reaction, 29th Congress on Science and Technology of Thailand (STT), 20-22, October, 2003, Golden Jubilee Convention Hall, Khon Kaen University, Thailand.
  3. Riyajan, S., Sakdapiphanich, Pukkate, N., Tanaka, Y., Chemical Modification of Natural Rubber Latex Via Cyclization, 8th Pacific Polymer Conference, 24-27, November, 2003, Queen Sirikit     National Convention Center, Bangkok, Thailand.
  4. Riyajan, S.,  Sakdapiphanich, J., Simon C.L., One and Two Dimentional NMR Investigation of Cyclized NR Obtained from Trimethylsilyl Triflate (TMSOTF) as a Catalyst  and Deproteinized Natural Rubber (DPNR) Latex, 7th RGJ-Congress Conferences, 20-22, April, 2006, Jomtien Palm Beach Hotel & Resort, Pattaya, Chonburee, Thailand
  5. Riyajan, S., Sakdapiphanich, J., Swelling Effect on Chemical Degradation of Deproteinized Natural rubber latex 1st Malaysian Chemical Congress (MCC2004), 27-29, September 2004,  Sunway Pyramid Convention Centre, Bandar Sunway, Petaling Jaya, Selanggor, Malaysia.
  6. Riyajan, S., Sakdapiphanich, J. Swelling Effect on Chemical Degradation of Deproteinized Natural Rubber Latex 31st, Congress on Science and Technology of Thailand (STT), 20-22, October, 2005, Technopolis, Suranaree University of Technology, Nakhon Ratchasima,Thailand.
  7. Riyajan, S., Sakdapiphanich, J., Kanyawararak, K., likhitlaksanakul, T., Tanaka, Y. Controlled Photodegradation of Natural Rubber Glove by Encapsulated Benzophenone and 2,6-di-t-Butyl-p-Cresol Toluene, 2nd Thailand Materials Science and Technology Conference: Materials Science and Technology for a Sustainable Development of Thailand, 6-7 August 2003, Kasetsart University, Bangkok, Thailand
  8. Riyajan, S.,  Sakdapiphanich, J., Simon C.L. One and Two Dimentional NMR Investigation of Cyclized NR Obtained from Trimethylsilyl Triflate (TMSOTF) as a Catalyst and Deproteinized Natural Rubber (DPNR) Latex Form, 1ST World Rubber Summit, 26-29, July, 2006, Muangthong Thani, Bangkok, Thailand
  9. Riyajan, S.,  Sakdapiphanich, J., Simon C.L. One and Two Dimentional NMR Investigation of Cyclized NR Containing High Degree of Cyclization  2nd Malaysian Chemical Congress, 19-21,  July, 2006, Sunway Paramid Convention Centre, Petaling Jaya, Malaysia.
  10. Riyajan, S., Sakdapiphanich, J. Kinetic of Cationic Cyclization in Deproteinized Natural Rubber Latex by using a Novel Catalyst 32th Congress on Science and Technology of Thailand (STT), 10-12, October, 2006, Queen Sirikit National Convention Center, Chulalongkorn University, Thailand.
  11. Riyajan, S., Sakdapiphanich, J. Effect of Particle Size of Natural Rubber Particle and Swelling Ratio on Degree of Cyclization in Natural Rubber,1st Science Naresuen, 15-16, March, 2007, Naresuen University, Thailand.
  12. Riyajan, S., Activation Energy and Physical Properties of Rubber Blends Containing the Cyclized Natural Rubber, 2nd International Conference on Mining, Material, Petroleum Engineering, Frontiers of Technology, 15-16, March, 2007, Thailand.
  13. Riyajan, S., Solution and Solid-State NMR Investigation of the Cyclized Natural Rubber Obtained from Sulfuric Acid as a Catalyst, 2nd International Science Conference on Advances  in Petrochemicals and Polymers, 25-28, June, 2007, Chulalongkorn University, Bangkok, Thailand
  14. Riyajan, S., Encapsulation of Azadirachtin by using Partially Hydrolyzed Poly (vinyl acetate)  33th Congress on science and Technology of Thailand (STT), 18-20, October, 2007, Walailak  University, Thailand         
  15. Riyajan, S., Chaiponban S.,  Kothamnivet D. To Study the Physical Properties of Natural Rubber-polyvinyl alcohol blends 33th Congress on Science and Technology of Thailand (STT), 18-20, October, 2007, Walailak University, Thailand  
 



 
 
Faculty of Science, Prince of Songkla University, Hatyai, Songkhla, Thailand 90112
Tel +66-7428-8008, +66-7428-8022, Fax. +66-7421-2801