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telechelic polymer : ウィキペディア英語版
telechelic polymer
A telechelic polymer or oligomer is a prepolymer capable of entering into further polymerization or other reactions through its reactive end-groups. It can be used for example to synthesize block copolymers.
By definition, a telechelic polymer is a di-end-functional polymer where both ends possess the same functionality. Where the chain-ends of the polymer are not of the same functionality they are termed di-end-functional polymers.
All polymers resulting from living polymerization are end-functional but may not necessarily be telechelic.〔
To prepare polymers by step-growth polymerization, telechelic polymers like polymeric diols and epoxy prepolymers can be used. The main examples are:
* Polyether diols;
* Polyester diols;
* Polycarbonate diols: Polyhexamethylene carbonate diol (PHMCD);
* Polyalcadiene diols: Hydroxyl-terminated polybutadiene (PBHT)...
Other examples of telechelic polymers are the halato-telechelic polymers or halatopolymers. The end-groups of these polymers are ionic or ionizable like carboxylate or quaternary ammonium groups.
== References ==



抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
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