6533b873fe1ef96bd12d4bab
RESEARCH PRODUCT
Synthesis of Defined Poly(silsesquioxane)s: Fast Polycondensation of Trialkoxysilanes in a Continuous-Flow Microreactor
Holger LöweDaniel KesslerPatrick Theatosubject
chemistry.chemical_classificationCondensation polymerPolymers and PlasticsOrganic ChemistryDispersityPolymerCondensed Matter PhysicsSilsesquioxanechemistry.chemical_compoundMonomerChain-growth polymerizationchemistryPolymerizationPolymer chemistryMaterials ChemistryPhysical and Theoretical ChemistryMicroreactordescription
The polycondensation of trialkoxysilanes to PSSQs in a microreactor setup is demonstrated. While continuous-flow processes involving microreactors found various applications in chain growth polymerization, their influence on step-growth polymerization is less explored, and the polycondensation of multifunctional monomers has not been studied in detail. We found significantly increased yields and a decreased polydispersity of the obtained polymers in comparison to the batch process. By variation of the residence time molecular weights could be adjusted reproducibly ranging from M n =1900 to 11000 g · mol -1 . Thus, the microreactor setup offers for the first time the possibility to synthesize PSSO with adjustable properties.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2009-05-22 | Macromolecular Chemistry and Physics |