Morphological and Thermal Properties of Cellulose Nanofibrils Reinforced Epoxy Nanocomposites

Aydemir, Deniz

doi:10.5552/drind.2015.1403

Cited by 8 publications

(5 citation statements)

References 12 publications

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“…It is mainly influenced by chain mobility, intermolecular reaction, branching, and crosslinking degree . In most studies, the T g of nanocomposites exhibits no significant changes with the addition of nanocellulose, with examples including epoxy and gluten composites . Furthermore, Niazi et al .…”

Section: Thermal Properties Of Nanocellulose Compositesmentioning

confidence: 99%

Thermal properties of nanocellulose‐reinforced composites: A review

Gan

Sam

Abdullah

et al. 2019

J of Applied Polymer Sci

201

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Nanocellulose has received increasing attention in science and industry in recent years as a nanoscale material for the reinforcement of polymer matrix composites due to its superior mechanical properties, renewability, and biodegradability. New nanocellulose sources, modifications, and treatments are under development to reduce the high energy required during production and to create a more suitable industrial-scale production process. Thus, this paper reviews plant-based nanocellulose composites and their properties, with a focus on their thermal-related characteristics. The purpose of this review is to establish for readers the impact of the incorporation of nanocellulose on the thermal and dynamic mechanical properties of nanocellulose composites. Understanding of the thermal properties is important for researchers to assess the suitability of the nanocomposites for a variety of applications in response to new and evolving societal requirements.The first NFC was produced from wood by using high-pressure homogenization without any pretreatment. 11,12 However, this method is a very energy-intensive process. Therefore, chemical treatments such as 2,2,6,6-tetramethylpiperidine-1-oxyl radical (TEMPO) oxidation combined with mechanical and chemical

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Section: Thermal Properties Of Nanocellulose Compositesmentioning

confidence: 99%

Thermal properties of nanocellulose‐reinforced composites: A review

Gan

Sam

Abdullah

et al. 2019

J of Applied Polymer Sci

201

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“…The X c values calculated using XRD patterns were 33.5% for neat PLA nanofibrils. Also, poor dispersion and aggregation of CNF in the biopolymer matrix was found as presented by Yusra et al, 60 Aydemir, 61 and Chai et al 62 This status might be indicated the degradation in the matrix due to chain scission/cleavage occurred in the highly crystallized PHB regions. 63,64 However, it was not detected any crack or slits on the BNCs expect for the PHB50-PLA50-CNF0.5, but it was detected to be the white spots on the surface of the all blends and the BNCs due to raised surface roughness, and photo-oxidation as a result of degradation reactions 65 as shown in Figure 9B-E,H.…”

Section: Rheology Characterizationmentioning

confidence: 92%

Biopolymer nanocomposite blends of poly(lactic acid) and polyhydroxybutyrate biopolymers reinforced with cellulose nanofibrils at low loading ratio

Aydemir,

Gumus,

Altuntas

et al. 2024

Polymers for Advanced Techs

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This study investigated the mechanical, morphological, thermal, rheological properties, and accelerated aging performance of poly(lactic acid) (PLA)/polyhydroxybutyrate (PHB) blends with cellulose nanofibrils (CNFs) at low loading ratio. According to the obtained results, the addition of both PLA and CNFs were found to generally increase the mechanical properties of the biopolymer nanocomposites (BNCs). Morphological characterization with scanning electron microscopy (SEM) exhibited that cellular structure occurred in all the BNCs with adding both PLA and CNFs. Thermal stability of the BNCs improved with PLA and CNFs. The addition of CNFs and PLA generally increased the isotherms including Tg, Tc, and Tm according to differential scanning calorimetry (DSC), and it was found that the blends' crystallinity dropped because of a poor crystallinity of PLA. The addition of both PLA and CNFs provided an improvement on the rheological and viscoelastic properties of the neat PHB. XRD pattern of all the BNCs was found to be similar to the neat blends and the BNCs. In the accelerated weathering test, the adding PLA to neat PHB was found to provide more improvement than adding of CNFs.

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“…For example, Omrani et al [132] reported that direct dispersion of CNFs in epoxy resin could cause agglomeration of CNFs when the content reached 0.5 phr. It is generally believed that the content of cellulose is the key factor to affect the dispersion, and the high content of nanocellulose is difficult to disperse in epoxy with high viscosity [133]. Emami et al [103] found that the optimal content of CNCs reinforcing epoxy resin is about 2%.…”

Section: Dispersion Strengthening Strategymentioning

confidence: 99%

Naturally or artificially constructed nanocellulose architectures for epoxy composites: A review

Soomro

Huang

et al. 2020

Nanotechnology Reviews

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Applications of carbon fiber reinforced epoxy-based composites have been highly restricted due to their high cost in the manufacturing process. Cellulose, a cheap and abundant material from nature, shows excellent mechanical property and structural stability. It shows huge potentials in substituting carbon fiber/epoxy with cellulose/epoxy composites to fulfill the great demands for composites with good performance and a reasonable price. This paper first reviews works about the preparation and regulation of cellulose materials based on the very basic concepts of top-down and bottom-up. Then research about the interfacial regulation between cellulose and epoxy has been discussed in two broad classes of covalent and non-covalent modification. Finally, the enhancement effect of cellulose reinforcement has been discussed in two broad classes of dispersive reinforcement and continuous phase reinforcement. The latter can be further divided into three classes according to the dimension feature (1D, 2D, and 3D). The results show that the nanolization of cellulose is necessary for guaranteeing the strength of composites, while the formation of macroscopic and continuous structures can ensure Young’s modulus of composites.

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Morphological and Thermal Properties of Cellulose Nanofibrils Reinforced Epoxy Nanocomposites

Abstract: • Epoxy resins have gained attention as important adhesives

Cited by 8 publications

References 12 publications

Thermal properties of nanocellulose‐reinforced composites: A review

Thermal properties of nanocellulose‐reinforced composites: A review

Biopolymer nanocomposite blends of poly(lactic acid) and polyhydroxybutyrate biopolymers reinforced with cellulose nanofibrils at low loading ratio

Naturally or artificially constructed nanocellulose architectures for epoxy composites: A review

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