Microwave-assisted Ring-Opening Polymerization of ε-Caprolactone in Presence of Hydrogen Phosphonates

Tan, Yi; Cai, Shaojun; Liao, Liqiong; Wang, Qingrong; Liu, Lijian

doi:10.1295/polymj.pj2009079

Cited by 11 publications

(7 citation statements)

References 39 publications

(34 reference statements)

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“…The effects of the presence of diisopropyl hydrogen phosphonate (2.9%) on the microwave assisted synthesis of PCL was examined, concluding that the ROP was initiated by traces of water but could be catalyzed by the oligo(ε-caprolactone)-substituted hydrogen phosphonate resulting from transesterification reactions. A polymer with molecular weight of 8,100 g/mol was obtained in 100 min at 510 W of irradiation power (Tan et al, 2009). …”

Section: Poly(ε-caprolactone)mentioning

confidence: 99%

Synthesis and processing of biodegradable and bio-based polymers by microwave irradiation

Frediani¹,

Giachi²,

Rosi³

et al. 2011

Microwave Heating

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Section: Poly(ε-caprolactone)mentioning

confidence: 99%

Synthesis and processing of biodegradable and bio-based polymers by microwave irradiation

Frediani¹,

Giachi²,

Rosi³

et al. 2011

Microwave Heating

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“…(2.3–2.5 ppm), and CH 3 (1.2–1.5 ppm) generated from the polymerization of EDA . Moreover, the signals belonged to CH 2 CH 2 CH 2 CH 2 CH 2 (1.4–1.6 ppm), and CH 2 CH 2 CH 2 CH 2 CH 2 (1.1–1.2 ppm) refer to PCL segments . Figure e is the 13 C NMR spectrum of the obtained polymer, the peaks at δ 173.2 and 157.8 ppm can be referred to carbonyl groups.…”

Section: Resultsmentioning

confidence: 93%

One‐Pot Synthesis of Polyester–Polyolefin Copolymers by Combining Ring‐Opening Polymerization and Carbene Polymerization

Xiao

Liao

Guo

et al. 2013

Macro Chemistry & Physics

Self Cite

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The ring‐opening polymerization (ROP) of a cyclic ester using alkyl acetate carbene (ROCOCH:) is generated from diazoacetate as organocatalyst under microwave irradiation, which enables the one‐pot preparation of copolymers of polyester and polyolefin. The chemical structure of the polymerized product is characterized by NMR, Fourier transformed infrared (FTIR), and UV–vis spectroscopy. The incorporation of the azo group into the obtained copolymer is determined by elemental analysis, which indicates that 1.38–6.21% nitrogen is contained in the obtained copolymers. The influences of catalyst and microwave irradiation parameters on the polymerization are investigated. Both the microwave power and irradiation time have great influences on the copolymerization. Moreover, the molar mass of the obtained polymers is calculated with polystyrene standards, which gradually increases from 600 to 36 100 g mol−1 as the reaction temperature increases from 60 to 120 °C. Polymer with M¯n of 36 100 g mol−1 and PDI of 1.86 is produced under optimized conditions. The combination of ROP and carbene polymerization offers a new and convenient pathway to synthesize copolymers of polyesters and polyolefins.

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“…Poly(ε-caprolactone) (PCL) is one of the most common industrial biodegradable materials for bio- and medical packaging applications. Ring opening polymerization (ROP) of ε-caprolactone(ε-CL) to obtain PCL requires over 24 h when conventional heating is used [99]. Liao et al obtained PCL in just 30 min by performing ROP with ZnO as a catalyst and under the presence of [Bmim][BF 4 ].…”

Section: Polymers Preparationmentioning

confidence: 99%

New Developments in Material Preparation Using a Combination of Ionic Liquids and Microwave Irradiation

et al. 2019

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During recent years, synthetic methods combining microwaves and ionic liquids became accepted as a promising methodology for various materials preparations because of their high efficiency and low energy consumption. Ionic liquids with high polarity are heated rapidly, volumetrically and simultaneously under microwave irradiation. Hence, combination of microwave irradiation as a heating source with ionic liquids with various roles (e.g., solvent, additive, template or reactant) opened a completely new technique in the last twenty years for nanomaterials and polymers preparation for applications in various materials science fields including polymer science. This review summarizes recent developments of some common materials syntheses using microwave-assisted ionic liquid method with a focus on inorganic nanomaterials, polymers, carbon-derived composites and biomass-based composites. After that, the mechanisms involved in microwave-assisted ionic-liquid (MAIL) are discussed briefly. This review also highlights the role of ionic liquids in the reaction and crucial issues that should be addressed in future research involving this synthesis technique.

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Microwave-assisted Ring-Opening Polymerization of ε-Caprolactone in Presence of Hydrogen Phosphonates

Cited by 11 publications

References 39 publications

Synthesis and processing of biodegradable and bio-based polymers by microwave irradiation

Synthesis and processing of biodegradable and bio-based polymers by microwave irradiation

One‐Pot Synthesis of Polyester–Polyolefin Copolymers by Combining Ring‐Opening Polymerization and Carbene Polymerization

New Developments in Material Preparation Using a Combination of Ionic Liquids and Microwave Irradiation

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