首页|Preparation of Chemically Recyclable Poly(ether-alt-ester)by the Ring Opening Polymerization of Cyclic Monomers Synthesized by Coupling Glycolide and Epoxides

Preparation of Chemically Recyclable Poly(ether-alt-ester)by the Ring Opening Polymerization of Cyclic Monomers Synthesized by Coupling Glycolide and Epoxides

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Polyester and polyether are two key oxygenated polymers,and completely alternative sequence of poly(ester-alt-ether)could efficiently combine the advantages(including flexibility,degradability,etc.)of both segments.Currently,despite their copolymers could be synthesized from one-pot mixture of cyclic esters and epoxides,perfectly alternative microstructure is very challenging to realize and typically restricted to certain monomer pairs.Moving forward,synthesizing poly(ester-alt-ether)from commercially available and largescale monomers would be a significant advance.For example,successfully commercialized poly(glycolic acid)(PGA),which is not easily soluble in polymers due to its high crystallinity and is brittle and difficult to control the degradation cycle,would encounter a new paradigm if engineered into poly(ester-alt-ether).In this work,starting from the design of monomer with hybrid structures,we successfully synthesized a series of 1,4-dioxan-2-one containing different substituents based on glycolide(GA)and epoxides using commercially available Salen-Cr(Ⅲ)and PPNCl catalytic systems.The new monomers underwent ring-opening polymerization(ROP)to form a series of poly(ester-alt-ether)with perfectly alternating glycolic acid and propylene glycol repeat units under catalytic system of thiourea/base.The poly(ester-alt-ether)have significantly lower glass-transition temperature than PGA.Additionally,the poly(ester-alt-ether)can be chemically recovered to monomer using Sn(Oct)2 or 1,8-diazabicyclo[5.4.0]undecane-7-ene(DBU)as a catalyst in solution,thus establishing a closed-loop life cycle.From monomers derived from GA and epoxides,this work furnishes a novel strategy for the synthesis of poly(ester-alt-ether)with chemical recyclability.

PolyesterPolyetherAlternative copolymerRing-opening polymerization

Feng Ren、Zhuang-Zhuang Liang、Ming-Xin Niu、Chen-Yang Hu、Xuan Pang

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Key Laboratory of Polymer Ecomaterials,Changchun Institute of Applied Chemistry,Chinese Academy of Sciences,Changchun 130022,China

School of Applied Chemistry and Engineering,University of Science and Technology of China,Hefei 230026,China

National Key R&D Program of ChinaScience and Technology Development Plan of Jilin ProvinceScience and Technology Development Plan of Jilin ProvinceNational Natural Science Foundation of China,Basic Science Center ProgramNational Natural Science Foundation of ChinaNational Natural Science Foundation of China

2021YFA150170020230101042JC20210201059GX519881025220301752073272

2024

10.1007/s10118-023-3040-1

高分子科学(英文版)
中国化学会　中国科学院化学研究所

高分子科学(英文版)

CSTPCD
影响因子：0.721
ISSN：0256-7679
年,卷(期)：2024.42(2)
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