Self-extracted corn-stalk cellulose/epoxy resin composites

Lou, Chunhua; Jiang, Siyu; Yan, an; Zhou, Yongli; Liu, Yang; Zhang, Yong; Kong, Xianzhi

doi:10.1038/s41598-022-25695-0

Cited by 4 publications

(2 citation statements)

References 25 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Finally, a fracture was easily formed, resulting in a decline in the mechanical properties of the composite material 34 . The impact strength of 20% PEI‐KH560‐DE/EP composites was lower than that of 20% raw‐DE/EP possibly because the excess NH and NH 2 on the modified diatomite reacted with the epoxy group, thus increasing the cross‐linking degree of the resin, and the composites became brittle 35 . Therefore, only pure EP, 15% raw‐DE/EP, and 15% PEI‐KH560‐DE/EP were discussed herein.…”

Section: Resultsmentioning

confidence: 99%

Modification mechanism of modified diatomite with flexible amine‐based structure as a filler of epoxy resin and mechanical properties and curing kinetic of composites

Wang,

Lou,

et al. 2023

Polymer Composites

Self Cite

View full text Add to dashboard Cite

In this study, the binding of amine‐based hyperbranched macromolecular polyethyleneimine (PEI) to diatomite (DE) was carried out by using the silane coupling agent KH560 (PEI‐KH560‐DE). Fourier infrared spectroscopy, scanning electron microscopy were used to characterize the structure of the modified DE. Then, the composites were prepared using PEI‐KH560‐DE as the filler in the epoxy resin matrix and then cured with dimethylimidazole. The cured composites were tested for impact resistance, flexural properties, and tensile properties, and then subjected to DSC. The experimental results showed that when different proportions of diatomite or modified diatomite were added to the epoxy resin matrix, the strength and toughness of the composites could be significantly enhanced. When the content of PEI‐KH560‐DE was 15 wt%, the impact strength of the composites reached the maximum value of 5.39 kJ/m2, which was 156.67% higher than that of the pure epoxy resin (2.10 kJ/m2). The tensile strength was also improved from 16.38 MPa of the pure epoxy resin to 26.55 MPa, corresponding to an increase of 62.09%. With the addition of modified diatomite, the Tdmax and char yield of the composites were significantly enhanced, indicating that the addition of diatomite can enhance the heat resistance and thermal stability of the composites. The curing kinetics study showed that the addition of PEI‐KH560‐DE can significantly reduce the apparent activation energy required for the curing reaction of epoxy resin probably due to the presence of amine group in PEI, which plays a role in promoting the curing behavior.Highlights Amine groups and flexible chain segments were introduced into diatomite. Mechanism of polyethyleneimine‐modified diatomite was investigated. Improved mechanical and thermal properties of PEI‐KH560‐DE/EP composites. Curing kinetics showed that amine groups reduce apparent activation energy.

show abstract

Section: Resultsmentioning

confidence: 99%

Modification mechanism of modified diatomite with flexible amine‐based structure as a filler of epoxy resin and mechanical properties and curing kinetic of composites

Wang,

Lou,

et al. 2023

Polymer Composites

Self Cite

View full text Add to dashboard Cite

show abstract

“…The opportunities for CS valorization are expanded by the contemporary management strategies (CE, ZW). Nowadays, CS residues may be recycled to produce cellulose/epoxy resin composites [23], cellulose nanofibrils [24], cellulose composites [25], carbonaceous composite adsorbents [19], levulinic acid and biocarbon electrode material [26], second-generation bioethanol [27], biomethane [28], chemical pulp [29] and various biomaterials (plastics, hydrogels, fibers, composites) [30]. The use of agricultural waste biomass as fillers in different bio-composites [31], bio-plastics, tires [32], and other reinforced polymers [33,34] is one of the most promising directions to its conversion into value-added goods [34].…”

Section: Introductionmentioning

confidence: 99%

Integrated Hemicellulose Extraction and Papermaking Fiber Production from Agro-Waste Biomass

Puițel,

Balan,

Ailiesei

et al. 2023

Polymers

View full text Add to dashboard Cite

The present study deals with the valorization of corn stalks in an integrated processing strategy targeting two products: extracted hemicelluloses (HC) and papermaking fibers. Preliminary trials were conducted to assess the individual or the combined effects of biomass treatment on the quality of the obtained hemicelluloses and papermaking fibers. Depending on the hot alkaline extraction (HAE) conditions, the extracted HC had a xylan content between 44–63%. The xylan removal yield ranged between 19–35%. The recovery of HC from the extraction liquor and final black liquor was significantly affected by process conditions. The experimental approach continued with the study of HAE conditions on the obtained paper’s mechanical properties. The optimization approach considered conserving paper strength properties while achieving an equilibrium with the highest possible HC extraction yield. The optimal values are sodium hydroxide concentration (1%), process time (33 min), and temperature (100 °C). The xylan content in the separated HC sample was ~55%. An extended extraction of HC from the resulting pulp under hot alkaline conditions with 5% NaOH was performed to prove the HC influence on paper strength. The xylan content in HC samples was 65%. The consequence of xylan content reduction in pulp leads to 30–50% mechanical strength loss.

show abstract

Mesoporous Activated Carbon Derived from Corn Stalk as Supercapacitor Electrodes

Byambadorj,

Zhang,

Yang

et al. 2024

2024 IEEE 7th International Electrical and Energy Conference (CIEEC)

View full text Add to dashboard Cite

Self-extracted corn-stalk cellulose/epoxy resin composites

Cited by 4 publications

References 25 publications

Modification mechanism of modified diatomite with flexible amine‐based structure as a filler of epoxy resin and mechanical properties and curing kinetic of composites

Modification mechanism of modified diatomite with flexible amine‐based structure as a filler of epoxy resin and mechanical properties and curing kinetic of composites

Integrated Hemicellulose Extraction and Papermaking Fiber Production from Agro-Waste Biomass

Mesoporous Activated Carbon Derived from Corn Stalk as Supercapacitor Electrodes

Contact Info

Product

Resources

About