Mq-Type polymers based on hyperbranched polyethoxysiloxane and molecular silicasoles

POLY 537

Ivan B. Meshkov, zlvkor@mail.ru1, Valentina V. Kazakova, valent@ispm.ru1, Ol'ga B. Gortbatcevich1, Natalia V. Voronina, voronina@polly.phys.msu.ru2, Victor D Myakouchev, vidam@ispm.ru1, and Aziz M. Muzafarov, aziz@ispm.ru1. (1) Laboratory Of Organoelement Polymers Synthesis, Enicolopov Institute of Synthetic Polymer Materials of RAS, Profsoyuznaya 70, Moscow, 117393, Russia, (2) Polymer Physics Chair, Physic Department of Moscow State University, Leninskie gory, Moscow, 119992, Russia
Unlike traditional MQ-type resins prepared by hydrolytic co-condensation process the subject of discussion in this paper is another synthetic approach to the polymers of MQ-combination. The new approach based on hyperbranched polyethoxysiloxanes and their polycyclic derivatives - molecular silicasoles might have the same ratio of M and Q units but sharply differ from MQ-resins. The main difference connected with molecular structure organization. The new structures start with formation of the initial inorganic core hyperbranched or nano-gel structure with following substitution of the remaining ethoxy groups to organosiloxy- groups. Taking into account the area of potential application of new polymers – molecular nano-fillers the key point for the chemical approach elaboration was possibility to regulate parameters of molecular structure. It means the regulation of size and functionality of new molecular forms of MQ material of core-shell structure. Three different approaches to solve the mentioned above key problem will be discussed in presentation.
 

Silicones and Silicone-Modified Materials
6:00 PM-8:00 PM, Tuesday, 12 September 2006 Moscone Center -- Hall D, Poster

Division of Polymer Chemistry

The 232nd ACS National Meeting, San Francisco, CA, September 10-14, 2006