scholarly journals Characterization of Novel Biopolymer Blend Mycocel from Plant Cellulose and Fungal Fibers

Polymers ◽  
2021 ◽  
Vol 13 (7) ◽  
pp. 1086
Author(s):  
Ilze Irbe ◽  
Inese Filipova ◽  
Marite Skute ◽  
Anna Zajakina ◽  
Karina Spunde ◽  
...  
Keyword(s):  
Food Packaging ◽  
Virus Titer ◽  
Cellulose Fibers ◽  
Air Permeability ◽  
Fomes Fomentarius ◽  
Filtration Membranes ◽  
Virus Filtration ◽  
Increased Strength ◽  
High Virus

In this study unique blended biopolymer mycocel from naturally derived biomass was developed. Softwood Kraft (KF) or hemp (HF) cellulose fibers were mixed with fungal fibers (FF) in different ratios and the obtained materials were characterized regarding microstructure, air permeability, mechanical properties, and virus filtration efficiency. The fibers from screened Basidiomycota fungi Ganoderma applanatum (Ga), Fomes fomentarius (Ff), Agaricus bisporus (Ab), and Trametes versicolor (Tv) were applicable for blending with cellulose fibers. Fungi with trimitic hyphal system (Ga, Ff) in combinations with KF formed a microporous membrane with increased air permeability (>8820 mL/min) and limited mechanical strength (tensile index 9–14 Nm/g). HF combination with trimitic fungal hyphae formed a dense fibrillary net with low air permeability (77–115 mL/min) and higher strength 31–36 Nm/g. The hyphal bundles of monomitic fibers of Tv mycelium and Ab stipes made a tight structure with KF with increased strength (26–43 Nm/g) and limited air permeability (14–1630 mL/min). The blends KF FF (Ga) and KF FF (Tv) revealed relatively high virus filtration capacity: the log10 virus titer reduction values (LRV) corresponded to 4.54 LRV and 2.12 LRV, respectively. Mycocel biopolymers are biodegradable and have potential to be used in water microfiltration, food packaging, and virus filtration membranes.

Dextran sieving test for characterization of virus filtration membranes

2011 ◽  
Vol 379 (1-2) ◽  
pp. 239-248 ◽  
Author(s):  
Meisam Bakhshayeshi ◽  
Dharmesh M. Kanani ◽  
Amit Mehta ◽  
Robert van Reis ◽  
Ralf Kuriyel ◽  
...  
Keyword(s):  
Filtration Membranes ◽  
Virus Filtration

Characterization of cellulose fibers in Thespesia populnea barks: Influence of alkali treatment

2019 ◽  
Vol 217 ◽  
pp. 178-189 ◽  
Author(s):  
M. Kathirselvam ◽  
A. Kumaravel ◽  
V.P. Arthanarieswaran ◽  
S.S. Saravanakumar
Keyword(s):  
Alkali Treatment ◽  
Cellulose Fibers ◽  
Thespesia Populnea

scholarly journals Characterization of ceramic pieces shaped from clay intended for the development of filtration membranes

2021 ◽  
Vol 37 ◽  
pp. 1-11
Author(s):  
Mohammed Messaoudi ◽  
Najib Tijani ◽  
Sara Baya ◽  
Adnane Lahnafi ◽  
Hassan Ouallal ◽  
...  
Keyword(s):  
Filtration Membranes

Characterization and A Preliminary Study of TiO2 Synthesis from Lampung Iron Sand

2020 ◽  
Vol 849 ◽  
pp. 113-118
Author(s):  
Yayat Iman Supriyatna ◽  
Slamet Sumardi ◽  
Widi Astuti ◽  
Athessia N. Nainggolan ◽  
Ajeng W. Ismail ◽  
...  
Keyword(s):  
Food Packaging ◽  
Xrd Analysis ◽  
Major Elements ◽  
Raw Material ◽  
Solid Residue ◽  
X Ray Diffraction ◽  
X Ray ◽  
Leaching Solution ◽  
Ti Content

The purpose of this study is to characterize Lampung iron sand and to conduct preliminary experiments on the TiO2 synthesis which can be used for the manufacturing of functional food packaging. The iron sand from South Lampung Regency, Lampung Province that will be utilized as raw material. The experiment was initiated by sieving the iron sand on 80, 100, 150, 200 and 325 mesh sieves. Analysis using X-Ray Fluorescence (XRF) to determine the element content and X-Ray Diffraction (XRD) to observe the mineralization of the iron sand was conducted. The experiment was carried out through the stages of leaching, precipitation, and calcination. Roasting was applied firstly by putting the iron sand into the muffle furnace for 5 hours at a temperature of 700°C. Followed by leaching using HCl for 48 hours and heated at 105°C with a stirring speed of 300 rpm. The leaching solution was filtered with filtrate and solid residue as products. The solid residue was then leached using 10% H2O2 solution. The leached filtrate was heated at 105°C for 40 minutes resulting TiO2 precipitates (powder). Further, the powder was calcined and characterized. Characterization of raw material using XRF shows the major elements of Fe, Ti, Mg, Si, Al and Ca. The highest Ti content is found in mesh 200 with 9.6%, while iron content is about 80.7%. While from the XRD analysis, it shows five mineral types namely magnetite (Fe3O4), Rhodonite (Mn, Fe, Mg, Ca) SiO3, Quart (SiO2), Ilmenite (FeOTiO2) and Rutile (TiO2). The preliminary experiment showed that the Ti content in the synthesized TiO2 powder is 21.2%. The purity of TiO2 is low due to the presence of Fe metal which is dissolved during leaching, so that prior to precipitation purification is needed to remove impurities such as iron and other metals.

Preparation and Characterization of Chitosan Pressure-Driven Filtration Membranes

2019 ◽  
Vol 1 (5) ◽  
pp. 306-315 ◽  
Author(s):  
V. M. Sedelkin ◽  
L. N. Potehina ◽  
O. A. Lebedeva ◽  
M. G. Schneider ◽  
E. R. Ulyanova
Keyword(s):  
Filtration Membranes ◽  
Pressure Driven

Determination of Bio Content in Polymers used in the Packaging of food Products

Radiocarbon ◽  
2019 ◽  
Vol 61 (6) ◽  
pp. 1973-1981
Author(s):  
C Telloli ◽  
A Rizzo ◽  
C Canducci ◽  
P Bartolomei
Keyword(s):  
Food Packaging ◽  
Liquid Scintillation ◽  
Scintillation Counting ◽  
Operational Parameters ◽  
Original Design ◽  
Plastic Materials ◽  
Different Types ◽  
Scintillation Method

ABSTRACTThe ENEA Radiocarbon Laboratory (Bologna, Italy) has been operating since 1985; it is the oldest among such laboratories operating in Italy and has been active for about 30 years in the field of dating of different types of samples with the radiocarbon (14C) liquid scintillation method. This study shows the detailed procedure for radiocarbon analysis on bioplastic materials by means of the synthesis of benzene, which includes CO2 production and purification, synthesis of acetylene, and synthesis and collection of benzene. The changes made to the original design of the synthesis procedures and the operational parameters adopted to optimize the combustion of the plastic materials are described. The measurement of 14C activity was performed using the liquid scintillation counting technique by a QuantulusTM 1220 low-background counter. The δ13C content was compared with the percentage of 14C concentration for the characterization of the bio content in plastic used in the food packaging.

Polypropylene Fibre Reinforced Concrete Air Permeability

1990 ◽  
Vol 211 ◽  
Author(s):  
Miguel A. Sanjuan ◽  
A. Moragues ◽  
B. Bacle ◽  
C. Andrade
Keyword(s):  
Carbon Dioxide ◽  
Reinforced Concrete ◽  
Steel Corrosion ◽  
Air Permeability ◽  
Polypropylene Fibre ◽  
Fibre Reinforced Concrete ◽  
Polypropylene Fibres ◽  
Cement Ratio ◽  
Reinforcing Steel Corrosion

AbstractThe permeability of concrete to gases is of direct importance to the durability of concrete structures, because of carbon dioxide flowing through the concrete favour lime carbonation and reinforcing steel corrosion.Mortar with and without polypropylene fibres having water/cementitious ratios of 0.30, 0.35 and 0.40 and a cement/sand ratio of 1/1 were studied. Polypropylene dosage varied from 0.1 to 0.3% by volume of cement.The characterization of mortar permeability was made using cylindrical shaped samples (3 cm height and 15 cm diameter). These specimens were 28 days cured and then dried before the test.The addition of fibres results in a decrease of air permeability. Variation of the water/cement ratio is of lesser importance than fiber addition.

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