Development and potential applications of gelatine, honey, and cellulose electrospun nanofibres as a green polymer

Nanofibres have emerged as a brilliant technology to be applied in various areas due to their excellent properties that include having a great flexibility, prominent specific surface area and structural strength. Electrospinning is one of the most effective and favourable methods to fabricate nanofibres mainly because electrospun nanofibres have been demonstrated to possess small pore sizes, large specific surface area, and can be produced with different functions to fill the need of various applications in industries. Due to their remarkable properties, electrospun nanofibres have been proven to be suitable for applications in food packaging, medical, pharmaceutical and even in tissue engineering. Currently, there have been numerous research utilising both electrospun synthetic and natural polymers. Natural or green polymers are considered more favourable due to their biodegradable properties and potential biocompatibility. Therefore, there has been a shift to include more research regarding these green polymers. Green polymers can source from both plant polysaccharides and animal protein. Considering the different characteristics of synthetic polymers, the processing and fabrication methods may differ and must be adjusted accordingly. To well summarise the development of these green polymer nanofibres, we review fabrication methods of gelatine, honey and cellulose-based nanofibre and their potential applications in industries. There are indeed numerous promising areas for the usage of these green polymers which are based on their splendid individual properties especially when combined to form nanofibres via electrospinning. We hope this will promote continuous research and development for the applications in various industries including but not limited to tissue engineering, biomedical, food and pharmaceutical industries.

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Smart Calcium Phosphate Bioceramic Scaffold for Bone Tissue Engineering

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.529-530.19 ◽

2012 ◽

Vol 529-530 ◽

pp. 19-23 ◽

Cited By ~ 4

Author(s):

G. Daculsi ◽

Thomas Miramond ◽

Pascal Borget ◽

Serge Baroth

Keyword(s):

Tissue Engineering ◽

Stem Cell ◽

Specific Surface ◽

Surface Area ◽

Specific Surface Area ◽

Mechanical Test ◽

The Body ◽

Stable Phase ◽

X Rays ◽

Cell Colonization

The development of CaP ceramics involved a better control of the process of resorption and bone substitution. Micro Macroporous Biphasic CaP, (MBCP+) is a concept based on an optimum balance of the more stable phase of HA and more soluble TCP. The material is soluble and gradually dissolves in the body, seeding new bone formation as it releases Ca and P ions into the biological medium. The MBCP+ is selected for tissue engineering in a large European research program on osteoinduction and mesenchymal stem cell technology (REBORNE 7thEU frame work program, Regenerative Bone defects using New biomedical Engineering approaches,www.reborne.org). We have optimized the matrices in terms of their physical, chemical, and crystal properties, to improve cell colonization and to increase kinetic bone ingrowth. The fast cell colonization and resorption of the material are associated to the interconnected macropores structure which enhances the resorption bone substitution process. The micropore content involves biological fluid diffusion and suitable adsorption surfaces for circulating growth factors. The bioceramics developed for this project was fully characterized using X-Ray diffraction, FTIR, X-rays micro tomography, Hg porosimetry, BET specific surface area, compressive mechanical test, and SEM. Preclinical tests on the optimized scaffold were realized in critical size defects in several sites of implantation and animals (rats, rabbits, goats, dogs).The smart scaffold has a total porosity of 73%, constituted of macropores (>100µm), mesopores of 10 to 100µm and high micropores (<10µm) content of more or less 40%. The crystal size is <0.5 to 1 µm and the specific surface area was around 6m2/g. Thein vivoexperiment indicated higher colonization by osteogenic cells demonstrating suitable matrices for tissue engineering. The HA/TCP ratio of 20/80 was also more efficient for combination with total bone marrow or stem cell cultivation and expansion before to be implanted.

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Enhanced Air Filtration Performances by Coating Aramid Nanofibres on a Melt-blown Nonwoven

Nanoscale ◽

10.1039/d1nr06159c ◽

2021 ◽

Author(s):

Kangli Xu ◽

Lei Zhan ◽

Rui Yan ◽

Qinfei Ke ◽

Anlin Yin ◽

...

Keyword(s):

Specific Surface ◽

Pore Size ◽

Surface Area ◽

Specific Surface Area ◽

Small Diameter ◽

High Porosity ◽

Large Specific Surface Area ◽

Air Filtration ◽

Small Pore Size ◽

Small Pore

Nanofibre membranes with small diameter and large specific surface area are widely used in filtration fields due to their small pore size and high porosity. To date, aramid nanofibres (ANFs)...

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FRACTAL CHARACTERISTICS OF CONTINENTAL SHALE PORES AND ITS SIGNIFICANCE TO THE OCCURRENCE OF SHALE OIL IN CHINA: A CASE STUDY OF BIYANG DEPRESSION

Fractals ◽

10.1142/s0218348x1840008x ◽

2018 ◽

Vol 26 (02) ◽

pp. 1840008 ◽

Cited By ~ 10

Author(s):

JIJUN LI ◽

ZHAO LIU ◽

JUNQIAN LI ◽

SHUANGFANG LU ◽

TONGQIAN ZHANG ◽

...

Keyword(s):

Fractal Dimension ◽

Specific Surface ◽

Pore Structure ◽

Surface Area ◽

Specific Surface Area ◽

Average Pore Size ◽

Shale Oil ◽

Small Pore ◽

Oil Adsorption ◽

Biyang Depression

Samples from seven major exploration wells in Biyang Depression of Henan Oilfield were compared using low-temperature nitrogen adsorption and shale oil adsorption experiments. Comprehensive analysis of pore development, oiliness and shale oil flowability was conducted by combining fractal dimension. The results show that the fractal dimension of shale in Biyang Depression of Henan Oilfield was negatively correlated with the average pore size and positively correlated with the specific surface area. Compared with the large pore, the small pore has great fractal dimension, indicating the pore structure is more complicated. Using S1 and chloroform bitumen A to evaluate the relationship between shale oiliness and pore structure, it was found that the more heterogeneous the shale pore structure, the higher the complexity and the poorer the oiliness. Clay minerals are the main carriers involved in crude oil adsorption, affecting the mobility of shale oil. When the pore complexity of shale was high, the content of micro- and mesopores was high, and the high specific surface area could enhance the adsorption and reduce the mobility of shale oil.

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Preparation of preferentially exposed poison-resistant Pt(111) nanoplates with a nitrogen-doped graphene aerogel

Chemical Communications ◽

10.1039/c6cc07746c ◽

2016 ◽

Vol 52 (95) ◽

pp. 13815-13818 ◽

Cited By ~ 14

Author(s):

Beibei Xie ◽

Yong Zhang ◽

Na Du ◽

Haiping Li ◽

Wanguo Hou ◽

...

Keyword(s):

Specific Surface ◽

Surface Area ◽

Specific Surface Area ◽

Large Specific Surface Area ◽

Graphene Aerogel ◽

Nitrogen Doped ◽

Small Pore ◽

Catalytically Active ◽

Nitrogen Doped Graphene ◽

Doped Graphene

A poison-resistant and highly catalytically active Pt(111) lattice on ultrathin Pt nanoplates (Pt(111)NPTs) is obtained with a dense small pore N-atom doped aerogel (NGA) with a large specific surface area and high N content.

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Changes of Mineralogical Properties and Biological Activities of Gypsum and Its Calcined Products with Different Phase Structures

Evidence-based Complementary and Alternative Medicine ◽

10.1155/2021/6676797 ◽

2021 ◽

Vol 2021 ◽

pp. 1-14

Author(s):

Kaiyang Liu ◽

Shu Han ◽

Wei Gao ◽

Ya’nan Tang ◽

Xitao Han ◽

...

Keyword(s):

Specific Surface ◽

Pore Size ◽

Surface Area ◽

Specific Surface Area ◽

Phase Structure ◽

Biological Activities ◽

Compact Structure ◽

Small Pore Size ◽

Small Pore ◽

Anti Inflammatory

Raw gypsum (RG) and calcined gypsum (CG) are widely used in traditional Chinese medicine (TCM). RG is usually taken orally to resolve heat and diminish inflammation, while CG is only used externally to treat ulcerations and empyrosis. Calcination at different temperatures, three phase CG structures, namely, bassanite, anhydrite III, and anhydrite II, may be generated. We herein investigated the relationship between the phase structure and the efficacy of CG and the optimum phase structure for CG. RG has a compact structure, small pore size, weak anti-inflammatory effect, but no antibacterial effect, and has almost no effect on the repair of scalds. CG150 (bassanite) has a loose texture, large pore size and specific surface area, and certain antibacterial and anti-inflammatory effects, but it has a poor repair effect on scalds. CG750 (anhydrite II) has a compact structure, small pore size and specific surface area, and low antibacterial and anti-inflammatory effects, but it has a certain repair effect on scalds. Only CG350 (anhydrite III) has good performance in texture, pore size, specific surface area, antibacterial, anti-inflammatory, and scald repair. Our research has proved that the mineral properties and biological activities of CG are different due to different phase structures. CG350, namely, anhydrite III, is considered by our research to be the optimal phase structure as CG.

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