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Synthesis of Alkyne-functionalized Polymers via Living Anionic Polymerization and Investigation of Features during the Post-"thiol-yne" Click Reaction.
- Source :
-
Chinese Journal of Polymer Science (Springer Science & Business Media B.V.) . Sep2019, Vol. 37 Issue 9, p841-850. 10p. - Publication Year :
- 2019
-
Abstract
- "Thiol-yne" click reaction has already been widely applied in synthesis and modification of new polymer structures or novel materials due to its specific features. However, in most studies, only chain-end strategy was employed when using the di-addition feature of thiol-yne reaction, thus the in-chain di-addition strategy could endow us with a broader space to develop the synthesis of advanced polymers. Therefore, in this paper, the features of in-chain mono- and di-addition were investigated when modifying the alkyne-functionalized polymers to prepare grafted polymers via thiol-yne click reaction. The results showed that it is almost impossible to obtain the in-chain di-adducts even under excess feeding of chain-end thiol-functionalized grafts, while only the in-chain mono-adducts could be obtained efficiently. Further researches investigated that the controlled grafting could be encountered when carrying out the thiol-yne click reaction between chain-end alkyne-functionalized polystyrenes and chain-end thiol-functionalized polystyrenes under proper feedings. Therefore, the effect of steric-hindrance might be the primary reason for the alternative grafting via thiol-yne click reaction between in-chain and chain-end alkyne-functionalized polymers. [ABSTRACT FROM AUTHOR]
- Subjects :
- *LIVING polymerization
*ADDITION polymerization
*POLYMERIZATION
*POLYSTYRENE
Subjects
Details
- Language :
- English
- ISSN :
- 02567679
- Volume :
- 37
- Issue :
- 9
- Database :
- Academic Search Index
- Journal :
- Chinese Journal of Polymer Science (Springer Science & Business Media B.V.)
- Publication Type :
- Academic Journal
- Accession number :
- 137927332
- Full Text :
- https://doi.org/10.1007/s10118-019-2203-6