4.7 Article

Preparation of Bottlebrush Polymers via a One-Pot Ring-Opening Polymerization (ROP) and Ring-Opening Metathesis Polymerization (ROMP) Grafting-Through Strategy

期刊

MACROMOLECULAR RAPID COMMUNICATIONS
卷 37, 期 7, 页码 616-621

出版社

WILEY-V C H VERLAG GMBH
DOI: 10.1002/marc.201500672

关键词

comb polymers; degradable polymers; graphene oxide; Grubbs' catalyst; PLA

资金

  1. Army Research Office [W911NF-14-1-0322]
  2. American Chemical Society Petroleum Research Fund [54884-DNI7]

向作者/读者索取更多资源

Bottlebrush polymers are synthesized using a tandem ring-opening polymerization (ROP) and ring-opening metathesis polymerization (ROMP) strategy. For the first time, ROP and ROMP are conducted sequentially in the same pot to yield well-defined bottlebrush polymers with molecular weights in excess of 10(6) Da. The first step of this process involves the synthesis of a polylactide macromonomer (MM) via ROP of D, L-lactide initiated by an alcohol-functionalized norbornene. ROMP grafting-through is then carried out in the same pot to produce the bottlebrush polymer. The applicability of this methodology is evaluated for different MM molecular weights and bottlebrush backbone degrees of polymerization. Size-exclusion chromatographic and H-1 NMR spectroscopic analyses confirm excellent control over both polymerization steps. In addition, bottlebrush polymers are imaged using atomic force microscopy and stain-free transmission electron microscopy on graphene oxide.

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