A Comparative Study on the Properties of Rosin-Based Epoxy Resins with Different Flexible Chains

Deng, Lianli; Wang, Zehua; Qu, Bailu; Liu, Ying; Qiu, Wei; Qi, Shaohe

doi:10.3390/polym15214246

Cited by 5 publications

(1 citation statement)

References 49 publications

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“…Lignin-based epoxy resins result in slow curing and unstable properties due to the low mobility of large molecular substances and complex structures. The fused rings structure in rosin acid epoxy resin leads to an increase in brittleness [ 23 ]. Other bio-based compounds, such as cardanol, furan derivatives, gallic acid and isosorbide, still need to consider their cost, yield, and performance [ 17 , 24 , 25 , 26 ].…”

Section: Introductionmentioning

confidence: 99%

Bio-Sourced, High-Performance Carbon Fiber Reinforced Itaconic Acid-Based Epoxy Composites with High Hygrothermal Stability and Durability

Xiao,

Fang,

Wang

et al. 2024

Polymers

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Thermosetting polymers and composites are a class of high-performance materials with significant industrial applications. However, the widespread use of thermosets and their composites generates large quantities of waste and leads to serious economic and environmental problems, there is a critical need in the elaboration of sustainable composite materials. Here, we propose a method to prepare sustainable carbon fiber reinforced composites with different degrees of greenness by blending environmentally friendly EIA with DGEBA in different ratios, and the properties compared with a well-known commercial petroleum-based epoxy resin. The prepared carbon fiber reinforced polymer (CFRP) composites with different degrees of greenness had excellent dimensional stability under extreme hygrothermal aging. After aging, the green CFRP composite T700/EIA-30 has higher strength and performance retention than that of petroleum-based CFRP composites. The higher hygrothermal stability and durability of EIA-based epoxy resins as compared with BPA-based epoxy resins demonstrated significant evidence to design and develop a novel bio-based epoxy resin with high performance to substitute the petroleum-based epoxy resin.

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Section: Introductionmentioning

confidence: 99%

Bio-Sourced, High-Performance Carbon Fiber Reinforced Itaconic Acid-Based Epoxy Composites with High Hygrothermal Stability and Durability

Xiao,

Fang,

Wang

et al. 2024

Polymers

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Lignin‐Modified Epoxy Resin With Good Mechanical and Shape Memory Performance Fabricated by Synergistic Dispersion and Crosslinking With Polyetheramine

Xu,

Pan,

Chen

et al. 2024

J of Applied Polymer Sci

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To improve the reactivity and compatibility of lignin, it was first functionalized via the method of epoxidation. The epoxidized lignin (LEP) modified epoxy resin with good mechanical and shape memory performance was fabricated ingeniously by introducing the LEP into the epoxy resin homogeneously with the aid of synergistic dispersion and crosslinking of polyetheramine without using organic solvents. The effect of LEP addition on the curing reaction, thermal, mechanical, and shape memory performance of epoxy resin were intensively evaluated. The epoxy‐diamine curing reaction was promoted by the LEP incorporation, and the thermal stability and mechanical performance of epoxy resin were improved. The tensile strength and modulus of the LEP‐modified epoxy were increased by 14.3% and 32.5%, respectively. Such reinforcing effect of LEP on the thermal and mechanical performance was contributed to the rigid LEP chains which were chemically crosslinked into the network of epoxy resin uniformly. Also, the rigid LEP component in the cured epoxy resin inhibited the movement of chain segments, which could enhance the mechanical stability and slow down the rapid shape recovery rate of the epoxy resin network to some extent.

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A Novel Approach to the Development of Natural Resin‐Based Biopolymer in the Presence of a Reusable Catalyst: Characterization and Modeling of Material Properties

Angın,

Ertaş,

Aras

et al. 2024

Journal of Polymer Science

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The rise in environmental and health concerns has led to increasing attention to nature‐derived materials. Natural resin (NR) is secreted by pine trees, and it is a great monomer source for synthesizing biopolymers. The objective of this study is to produce terpene rosin phenolic resin (TRPR) from NR, turpentine, and phenol by applying a novel polymerization technique. An environmentally friendly and reusable catalyst (Amberlyst15) was chosen instead of traditional ones. TRPR samples were chemically characterized using Fourier transform infrared spectroscopy (FTIR), nuclear magnetic resonance spectroscopy (NMR), and gel permeation chromatography (GPC) analysis. The average molecular weight (Mw) of TRPR was detected as 560 g/mol. Artificial neural network (ANN) modeling was designed with three inputs (pressure, temperature, and terpene/NR ratio) and four outputs (reaction yield, acid value, saponification value, and softening point). The highest TRPR yield was obtained with a terpene/NR ratio of (1/2) at 80°C and under 3 atm. The lowest acid and saponification values were calculated as 90.54 and 100.11 mg KOH/g, respectively. The softening point of TRPR reached 80°C and it was suggested for use in the paper, ink, and adhesive industries.

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A Comparative Study on the Properties of Rosin-Based Epoxy Resins with Different Flexible Chains

Cited by 5 publications

References 49 publications

Bio-Sourced, High-Performance Carbon Fiber Reinforced Itaconic Acid-Based Epoxy Composites with High Hygrothermal Stability and Durability

Bio-Sourced, High-Performance Carbon Fiber Reinforced Itaconic Acid-Based Epoxy Composites with High Hygrothermal Stability and Durability

Lignin‐Modified Epoxy Resin With Good Mechanical and Shape Memory Performance Fabricated by Synergistic Dispersion and Crosslinking With Polyetheramine

A Novel Approach to the Development of Natural Resin‐Based Biopolymer in the Presence of a Reusable Catalyst: Characterization and Modeling of Material Properties

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