Polyheptenamer: A chemically recyclable polyolefin enabled by the low strain of seven‐membered cycloheptene
Polyheptenamer: A chemically recyclable polyolefin enabled by the low strain of seven‐membered cycloheptene
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聚庚烯:一种由七元环庚烯的低应变实现的化学可回收聚烯烃
DOI:
10.1002/pol.20240196
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发表时间:
2024
影响因子:
3.4
通讯作者:
Sun, Hao
中科院分区:
文献类型:
--
作者:
Ibrahim, Tarek;Martindale, Jordan;Ritacco, Angelo;Rodriguez, Mia;Sun, Hao
Low‐strain cyclic olefin monomers, including five‐membered, six‐membered, eight‐membered, and macrocyclic rings, have been recently exploited for the synthesis of depolymerizable polyolefins via ring‐opening metathesis polymerization (ROMP). Such polyolefins can undergo ring‐closing metathesis depolymerization (RCMD) to regenerate their original monomers. Nevertheless, the depolymerization behavior of polyolefins prepared by ROMP of seven‐membered cyclic olefins, an important class of low‐strain rings, still remains unexplored. In this study, we demonstrate the chemical recycling of polyheptenamers to cycloheptene under standard RCMD conditions. Highly efficient depolymerization of polyheptenamer was enabled by Grubbs' second‐generation catalyst in toluene. It was observed that the monomer yields increased when the depolymerization temperature increased and the starting polymer concentration was reduced. A near‐quantitative monomer regeneration (>96%) was achieved within 1 h under dilute conditions (20 mM of olefins) at 60°C. Moreover, polyheptenamer exhibited a decomposition temperature above 430°C, highlighting its potential as a new class of thermally stable and chemically recyclable polymer materials.
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影响因子:
56.9
作者:
Zhu, Jian-Bo;Watson, Eli M.;Chen, Eugene Y. -X.
通讯作者:
Chen, Eugene Y. -X.
DOI:
--
发表时间:
1986
期刊:
影响因子:
--
作者:
P. Patton;C. P. Lillya;T. J. McCarthy
通讯作者:
T. J. McCarthy
影响因子:
--
作者:
Hlil, Antsar R.;Balogh, Janos;Bazzi, Hassan S.
通讯作者:
Bazzi, Hassan S.
影响因子:
15
作者:
Rhys W Hughes;Megan E. Lott;Isabella S Zastrow;James B. Young;Tanmoy Maity;Brent S. Sumerlin
通讯作者:
Brent S. Sumerlin
影响因子:
23.5
作者:
K. Choi;S. Hong
通讯作者:
S. Hong