26 No. 6
Biodegradable Polymers and Plastics
by In-Joo Chin
The Eighth World Conference on Biodegradable Polymers and Plastics was held at Hanyang University in Seoul, Korea, from 1–4 June 2004. The conference was sponsored by IUPAC and jointly organized by the Polymer Society of Korea, Biodegradable Plastics Society Japan, BioEnvironmental Polymer Society, European Degradable Polymer Society, Korean Biodegradable Plastics Association, and Hanyang University. It brought together 238 participants from 19 countries including Japan, USA, China, Italy, Germany, Sweden, Poland, Australia, Taiwan, Thailand, UK, and the Netherlands.
Conference participation was well balanced among academia, research institutions, and industries. About half of the attendees were from abroad. The conference was co-chaired by Seung Soon Im, Department of Polymer and Textile Engineering, Hanyang University, and Young Ha Kim, Biomaterials Research Center, KIST, Seoul, Korea.
The meeting featured 36 invited lectures and almost 100 contributed oral and poster presentations, which were classified as follows:
• Microbial Poly(hydroxy alkanoate)s
• Poly(lactic acid)s
• Biodegradable Polyesters and Polyurethanes
• Hydrogels and Biomedical Applications
• Blends and Processing
• Structure and Properties of Degradable Polymers
• Standards and Regulations
During the first session, a number of world-renowned experts reported on recent progress in biodegradable polymers and plastics:
• R. Narayan and D. Graiver—”Drivers, Standards, and Technologies for Biobased, Biodegradable Polymer Materials”
• A.-C. Albertsson—”Degradable Aliphatic Polyesters and Poly(ether-esters) for Tissue Engineering and Drug Delivery”
• Y. Doi—”Engineering and Environmental Impact of Polyester Biosynthesis from Renewable Carbon Resources”
• G. Swift—”Impact of Origin of Resources and Polymer Structure and Compositions on the Production and Availability of Biodegradable Polymers”
• G. Ghislandi and G. Floridi—”Mater-Bi Products”
It was noteworthy that a significant number of papers were presented on various aspects of microbial poly(hydroxy alkanoate)s and their copolymers:
• S.Y. Lee on the systems biological approach for the production of various polyhydroxyalkanoates by metabolically engineered Escherichia coli
• L.K. Nielsen on the production of PHB in sugarcane
• Noda on NodaxTM PHA copolymers and their blends
• Y. Inoue on the structure, properties and biodegradation of some bacterial copoly(hydroxyalkanoate)s.
G.Q. Chen discussed recent findings on the production of poly(hydroxybutyrate-co-hydroxyhexanoate) by recombinant Aeromonas hydrophilia harboring genes of phA, phB, and vgb. H.N. Chang reported on the PHA production on an industrial scale using high-density cell culture. T. Iwata discussed the structure and biodegradability of poly[(R)-3-hydroxybutyrate] fiber and films and Y.B. Kim talked about the shape memorizing PHBVs.
Poly(lactic acid) is another important class of biodegradable polymer. P.J. Dijkstra spoke about the new developments in polylactide chemistry, S.H. Kim about the PLA synthesis in the supercritical chlorodifluoromethane, and Y. Kimura about a novel synthesis approach to stereo-block PLA. Proceedings of the selected papers will be published in Macromolecular Symposia.
A number of leaders in the biodegradable polymers and plastics industry participated in the conference. Navamont (producer of Mater-Bi), Cargill, Dow, Procter and Gamble (producer of NodaxTM), BASF (producer of Ecoflex), Showa High Polymer (producer of Bionelle), Mitsui Chemicals, and IRe Chemicals of Korea all presented their recent research and development activities. Also, several Korean companies such as SK Chemicals, Toray Saehan, IRe Chemical, Daesang, and Yuhan Kimberly, all members of the Korean Biodegradable Plastics Association, financially supported the conference.
Since 1989, when the series started, the conference has been held in Toronto, Canada; Montpellier, France; Osaka, Japan; Durham, North Carolina, USA; Stockholm, Sweden; Honolulu, Hawaii, USA; and Tirrenia, Italy. It was very meaningful to have the 8th World Conference on Biodegradable Polymers and Plastics in Korea, because public awareness about the reuse and recycling of sustainable resources and the preservation of the environment has been growing steadily in many Asian countries. In fact, in the session on Standards and Regulations, industrial development activities in the biodegradable plastics of Japan, China, and Taiwan were reviewed. The standardization effort in Korea was also presented.
The 9th World Conference on Biodegradable Polymers and Plastics will be held in the USA in 2006. J.L. Willett of the USDA accepted responsibility for preparing the next meeting.
In-Joo Chin <[email protected]>, conference secretary, is a professor in the Department of Polymer Engineering in Seoul, Korea.
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