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Details van artikel 17 van 18 gevonden artikelen
| Titel: |
Silarylencyclohexasiloxane—Poly-dimethylsiloxane Block-copolymers |
| Auteur: |
Mukbaniani, O. Karchadze, M. Matsaberidze, M. Achelashvili, V. Khananashvili, L. M. Kvelashvili, N. |
| Verschenen in: |
International journal of polymeric materials |
| Paginering: | Jaargang 41 (1998) nr. 1-2 pagina's 103-112 |
| Jaar: |
1998-07-01 |
| Inhoud: |
The reaction of heterofunctional condensation of 1,7-dihydroxy-1,7-dimethyloctaphe-nylcyclohexasiloxane with 1,4-bis(dimethylchlorsilyl)benzene in the presence of pyridin with 1:0.95 and 1:1 ratio of initial components have been investigated and α,ω-dihydroxysilarylencyclohexasiloxane oligomers have been obtained. On the basis of synthesized oligomers the corresponding block-copolymers were obtained by the reaction of heterofunctional condensation with α,ω-dichlordimethylsiloxanes. Ther-momechanical, thermogravimetric and X-ray studies of block-copolymers show that their properties are determined by a ratio of the lengths of flexible linear dimethyl-siloxane and rigid silarylen-chclohexasiloxane fragments in the chain. When the lengths of the linear dimethylsiloxane fragments have definite values, the microheterogeneous structure is observed in synthesized block-copolymers. |
| Uitgever: |
Taylor & Francis |
| Bronbestand: |
Elektronische Wetenschappelijke Tijdschriften |
Details van artikel 17 van 18 gevonden artikelen
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