New crosslinked polymer from a rapid polymerization of acrylic acid with triaziridine‐containing compound

Chen, Po‐Cheng; Wang, Shih-Chieh; Huang, Chun-Hong; Yeh, Jen‐Taut; Chen, Kan-Nan

doi:10.1002/app.25548

Cited by 25 publications

(14 citation statements)

References 19 publications

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“…There are three aziridine groups in each TMPTAP molecule. The high reactivity of aziridine groups to carboxyl groups has been reported by many researchers and also applied in many fields . Hence, TMPTAP was selected as crosslinking agent for the preparation of polyester‐based SSPCMs.…”

Section: Methodssupporting

confidence: 89%

“…The FTIR spectrum of TMPTAP is shown in Figure (d). The clear bands at around 1010 cm −1 and 1069 cm −1 are ascribed to the CN stretching vibration in the aziridine rings . Figure (e) shows the FTIR spectrum of PPCM2K, in which the obvious absorption bands at 2883 cm −1 and 1104 cm −1 respectively correspond to the stretching vibrations of CH 2  and COC groups.…”

Section: Resultsmentioning

confidence: 99%

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Polyester‐based phase change materials with flexible poly(ethylene glycol) chains for thermal energy storage

Liu

Xiao

et al. 2018

J of Applied Polymer Sci

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Phase change materials are capable of storing renewable energy in an economical, feasible, and green way. Here, novel polyester-based solid-solid phase change materials (PPCMs) are synthesized through solvent-free crosslinking polymerization. Poly(ethylene glycol) (PEG) is used as the phase change ingredient, while crosslinked polyester acts as the supporting material. One chain end of PEG reliably bonds with the rigid skeleton, while another chain end is movable. The combination of reliable crosslinked structures with flexible PEG chains endows the PPCMs with good thermal storage capacity and outstanding thermal reliability simultaneously. Fourier transform infrared spectroscopy is adopted to confirm the chemical structures of PPCMs. Their excellent crystalline properties are confirmed by wide-angle X-ray diffraction and polarizing optical microscopy (POM). Phase change properties are investigated using differential scanning calorimetry (DSC) and POM images. It is obvious in the DSC results that PPCMs have good thermal storage capacity in the range 18-63 C with phase change enthalpy reaching 139.0 J/g. POM images vividly reveal the crystallization process of PPCMs. Additionally, thermal stability is studied using thermogravimetric analysis, and the results show that PPCMs are thermally stable up to 300 C.

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Section: Methodssupporting

confidence: 89%

Section: Resultsmentioning

confidence: 99%

Polyester‐based phase change materials with flexible poly(ethylene glycol) chains for thermal energy storage

Liu

Xiao

et al. 2018

J of Applied Polymer Sci

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“…Curing kinetics and mechanism of acryic resin with aziridine crosslinker has been well known in several literatures. [20][21] Thlinee carboxyl groups of poly(MMA-co-MAA) and the ethylene imine groups (R-NH(CH 2 2 of aziridine formed crosslinking polymers during the formation of poly(MMA-co-MAA)/PEDOT hybrid films. The crosslinked hybrid film has a R-CO 2 -CH 2 CH 2 -NHR group, which is a type of aminoester.…”

Section: Resultsmentioning

confidence: 99%

Study on the Electrical, Optical, and Physicochemical Properties of Poly(MMA-co-MAA)/Poly(3,4-ethylenedioxythiophene) Hybrid Thin Films

Han¹,

Kim²,

Hwangbo³

et al. 2013

j. nanosci. nanotech.

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Poly(3,4-ethylenedioxythiophene) (PEDOT) has good properties as a conductive polymer such as high conductivity, optical transmittance, and chemical stability, while offering relatively weak physicochemical properties. The main purpose of this paper is to improve physicochemical properties such as solvent resistance and pencil hardness of PEDOT. Carboxyl groups in the poly(MMA-co-MAA) polymer chains can effectively crosslink each other in the presence of aziridine, resulting in physicochemically robust PEDOT/poly(MMA-co-MAA) hybrid conductive films. The electrical conductivity, optical properties, and physicochemical properties of the hybrid conductive film were compared by varying the solid content and poly(MMA-co-MAA) portion in the coating precursor solution. From the results, the transparency and surface resistance of the hybrid film show a tendency to decrease with increasing solid content in the coating precursor. Moreover, solvent resistance and hardness were dramatically enhanced by hybridization of PEDOT and crosslinked poly(MMA-co-MAA) due to curing reactions between carboxyl groups. The chemical composition of 30 wt-% of poly(MMA-co-MAA) (MMA:MAA mole ratio 9:1) and 3 wt-% - 5 wt-% of aziridine yields the best physicochemical properties of poly(MMA-co-MAA)/PEDOT hybrid thin films.

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“…Azetidine (AZT)17, 18 reacts with carboxylic acid containing compound and it also undergoes self‐polymerization at a pH value lower than 7.0; it is similar to a rapid polymerization of triaziridine compound with acrylic acid 17, 19. However, either AZT or aziridine moiety containing compound is stable in an alkaline system.…”

Section: Introductionmentioning

confidence: 99%

A new tri‐functional azetidine compound for self‐curing aqueous‐based PU system

Wang

Chen

Hwang

et al. 2011

J of Applied Polymer Sci

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A mono-azetidine compound had been demonstrating a ring opening reaction with carboxylic acid (e.g., trimethylacetic acid, TMAA) and that resulted in an amino ester bond formation at ambient temperature. A triazetidine compound (trimethylolpropane tris(1-azetidinyl)propionate, TMPTA-AZT) was obtained via Michael addition of azetidine (AZT) to trimethylolpropane triacrylate (TMPTA). The carboxylic groups of anionic aqueous-based polyurethanes (PU) served as internal emulsifier, which stabilized PU dispersion and also served as PU curing sites. The triazetidine compound (TMPTA-AZT) was introduced into anionic aqueous-based PU dispersion as a new latent curing agent and that mixture became a single-component self-curable aqueous PU system. A crosslinked PU film was obtained from this PU system on drying at ambient temperature.The final polymer performance properties demonstrated the crosslinking behaviors of this new curing agent, TMPTA-AZT, with carboxylic ion-containing aqueous-based PU resins.

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New crosslinked polymer from a rapid polymerization of acrylic acid with triaziridine‐containing compound

Cited by 25 publications

References 19 publications

Polyester‐based phase change materials with flexible poly(ethylene glycol) chains for thermal energy storage

Polyester‐based phase change materials with flexible poly(ethylene glycol) chains for thermal energy storage

Study on the Electrical, Optical, and Physicochemical Properties of Poly(MMA-co-MAA)/Poly(3,4-ethylenedioxythiophene) Hybrid Thin Films

A new tri‐functional azetidine compound for self‐curing aqueous‐based PU system

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