1. Institute of Macromolecular Compounds; Russian Academy of Sciences; Bol'shoi pr. 31 (VO) St Petersburg 199004 Russia
2. St Petersburg State Technological University of Plant Polymers; St Petersburg Russia
3. Enikolopov Institute of Synthetic Polymer Materials; Russian Academy of Sciences; Moscow Russia
4. Nesmeyanov Institute of Organoelement Compounds; Russian Academy of Sciences; Moscow Russia