Novel high-performance bamboo modification through nature rosin-based benzoxazine

Piao, Xixi; Xie, Meihua; Duan, Xinpeng; Jin, Chunde; Wang, Zhe

doi:10.1016/j.conbuildmat.2021.126123

Cited by 28 publications

(12 citation statements)

References 45 publications

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“…Cardanol, 26 eugenol, 27 guaiacol, 28 vanillin, 29 catechol, 30 urushiol, 31 p-coumaric acid, 32 etc. have been used as phenolic source, and dehydroabietylamine, 33 18 fatty amines, 15 dopamine, 34 tyramine, 35 stearylamine 36,37 and furfurylamine 38 have been used as amine source. The reserves of biogenic amine compounds in nature are much less than those of phenol sources.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of bio‐diamine derived main‐chain type benzoxazine resins with low surface free energy

Liu

Wang

Yang

et al. 2022

J of Applied Polymer Sci

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A series of bio-based fluorin-free main-chain type benzoxazine precursors were synthesized via bisphenol A/bisphenol F/diallyl bisphenol A, Priamine 1074 and paraformaldehyde by Mannich condensation reaction. Chemical structures of these obtained main-chain type precursors were characterized by FT-IR and NMR spectroscopies. The polymerization processes were studied by differential scanning calorimeter (DSC) and in situ FT-IR analysis. Besides, the contact angle and surface free energy of polybenzoxazine coatings were measured by water contact angle instrument. Moreover, the thermal performance of the resulting polybenzoxazine thermosets were evaluated by dynamic mechanical analyzer (DMA) and thermogravimetric analysis (TGA). Through the above various measurements, the newly developed bio-based main-chain type polybenzoxazine resins show good thermal stability and low surface free energy, suggesting great potential for applications as high-performance resin matrix. K E Y W O R D Sbenzoxazine, high thermal stability, low surface free energy, main-chain type, polybenzoxazine

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Section: Introductionmentioning

confidence: 99%

Synthesis of bio‐diamine derived main‐chain type benzoxazine resins with low surface free energy

Liu

Wang

Yang

et al. 2022

J of Applied Polymer Sci

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“…Among the literature that reported benzoxazine resins based on green strategies, 9–27,29–31,47–72 only three of them reported static mechanical properties of the resins (Table S1), however, these resins do not show high thermal resistance ( T g ≤ 193 °C, T di ≤ 381 °C). Figure 10B shows the stress–strain curve of poly(CT‐fa) , from which poly(CT‐fa) is known to have excellent tensile strength (51.60 ± 0.27 MPa), tensile modulus (3.32 ± 0.03 GPa) and elongation at break (1.95 ± 0.02%).…”

Section: Resultsmentioning

confidence: 99%

Synthesis of new biobased benzoxazine through green strategy and its polybenzoxazine resin with high thermal resistance and mechanical strength

Liu

Yuan

Liang

et al. 2023

Journal of Polymer Science

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Benzoxazine resins from benzoxazine monomers synthesized with green strategies often do not have high thermal resistance and mechanical strength. Herein, starting from renewable resources citraconic anhydride, furfurylamine and tyramine, a new benzoxazine monomer (CT‐fa) was synthesized and purified in green solvents (ethanol and ethyl acetate), which has excellent molding processability reflected by low melting point (84.9 °C) and low curing temperature (207–245 °C). More attractively, the cured CT‐fa resin (poly(CT‐fa)) has both high glass transition temperature (281 °C) and high initial thermal decomposition temperature (407 °C), the former is higher than those of all monofunctional benzoxazine resins synthesized though green strategies in literature, and the latter is even higher than those of all benzoxazine resins synthesized by green strategies (SCI database). In addition, poly(CT‐fa) also has high storage modulus (3955 MPa) and good tensile strength (51.60 MPa). These attractive properties demonstrate that poly(CT‐fa) is a promising green high performance resins.

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“…Hemicellulose was easier to decompose than any other chemical component due to its amorphous structure [ 18 ], and the non-conjugated C=O stretching vibration of hemicellulose xylan was represented at a peak of 1737 cm −1 [ 28 ], as shown in Figure 5 . The intensity of the characteristic peak decreased with increasing temperature, indicating the degradation of hemicellulose.…”

Section: Resultsmentioning

confidence: 99%

Effects of Thermal Treatment on the Mechanical Properties of Bamboo Fiber Bundles

Cui

et al. 2023

Materials

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Bamboo is known as a typical kind of functional gradient natural composite. In this paper, fiber bundles were extracted manually from various parts of the stem in the radial direction, namely the outer, middle, and inner parts. After heat treatment, the mechanical properties of the fiber bundles were studied, including the tensile strength, elastic modulus, and fracture modes. The micromechanical properties of the fiber cell walls were also analyzed. The results showed that the mean tensile strength of the bamboo fiber bundles decreased from 423.29 to 191.61 MPa and the modulus of elasticity increased from 21.29 GPa to 27.43 GPa with the increase in temperature. The elastic modulus and hardness of the fiber cell walls showed a positive correlation with temperature, with the modulus of elasticity and the hardness increasing from 15.96 to 18.70 GPa and 0.36 to 0.47 GPa, respectively. From the outside to the inside of the bamboo stems, the tensile strength and elastic modulus showed a slight decrease. The fracture behavior of the fiber bundles near the outside approximates ductile fracture, while that of the bundles near to the inside tend to be a brittle fracture. The fracture surfaces of the bamboo bundles and the single fibers became smoother after heat treatment. The results show that bamboo fiber bundles distributed near the outside are most suitable for industrial development under heat treatment at 180 °C. Therefore, this study can provide a reasonable scientific basis for the selective utilization, functional optimization, and bionic utilization of bamboo materials, which has very important theoretical and practical significance.

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Novel high-performance bamboo modification through nature rosin-based benzoxazine

Cited by 28 publications

References 45 publications

Synthesis of bio‐diamine derived main‐chain type benzoxazine resins with low surface free energy

Synthesis of bio‐diamine derived main‐chain type benzoxazine resins with low surface free energy

Synthesis of new biobased benzoxazine through green strategy and its polybenzoxazine resin with high thermal resistance and mechanical strength

Effects of Thermal Treatment on the Mechanical Properties of Bamboo Fiber Bundles

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