scholarly journals Influence of Charge and Heat on the Mechanical Properties of Scaffolds from Ionic Complexation of Chitosan and Carboxymethyl Cellulose

2021 ◽  
Author(s):  
Andreja Dobaj Štiglic ◽  
Rupert Kargl ◽  
Marco Beaumont ◽  
Christine Strauss ◽  
Damjan Makuc ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Carboxymethyl Cellulose ◽  
Ionic Complexation

scholarly journals Improvement of mechanical properties of orodispersible hyaluronic acid film by carboxymethyl cellulose addition

2020 ◽  
Vol 29 (9) ◽  
pp. 1233-1239 ◽  
Author(s):  
Seulki Kim ◽  
Dong-Hwa Cho ◽  
Dong-Keon Kweon ◽  
Eun-Hee Jang ◽  
Joo-Yeon Hong ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Hyaluronic Acid ◽  
Carboxymethyl Cellulose

scholarly journals DLP 3D Printing Meets Lignocellulosic Biopolymers: Carboxymethyl Cellulose Inks for 3D Biocompatible Hydrogels

Polymers ◽  
2020 ◽  
Vol 12 (8) ◽  
pp. 1655 ◽  
Author(s):  
Giuseppe Melilli ◽  
Irene Carmagnola ◽  
Chiara Tonda-Turo ◽  
Fabrizio Pirri ◽  
Gianluca Ciardelli ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Additive Manufacturing ◽  
3D Printing ◽  
Carboxymethyl Cellulose ◽  
Biomedical Applications ◽  
Digital Light Processing ◽  
Chemically Modified ◽  
Significant Step ◽  
3D Printed ◽  
Biomedical Field

The development of new bio-based inks is a stringent request for the expansion of additive manufacturing towards the development of 3D-printed biocompatible hydrogels. Herein, methacrylated carboxymethyl cellulose (M-CMC) is investigated as a bio-based photocurable ink for digital light processing (DLP) 3D printing. CMC is chemically modified using methacrylic anhydride. Successful methacrylation is confirmed by 1H NMR and FTIR spectroscopy. Aqueous formulations based on M-CMC/lithium phenyl-2,4,6-trimethylbenzoylphosphinate (LAP) photoinitiator and M-CMC/Dulbecco’s Modified Eagle Medium (DMEM)/LAP show high photoreactivity upon UV irradiation as confirmed by photorheology and FTIR. The same formulations can be easily 3D-printed through a DLP apparatus to produce 3D shaped hydrogels with excellent swelling ability and mechanical properties. Envisaging the application of the hydrogels in the biomedical field, cytotoxicity is also evaluated. The light-induced printing of cellulose-based hydrogels represents a significant step forward in the production of new DLP inks suitable for biomedical applications.

Characterization of Hydrophilic Membranes Based on PVP and Carboxymetylcelulose Staple Fibers Infused with Calcium Alginate

2011 ◽  
Vol 312-315 ◽  
pp. 513-517
Author(s):  
Leila Figueiredo de Miranda ◽  
Mauro Cesar Terence ◽  
Isabella Tereza Ferro Barbosa ◽  
Ingrid Martins Rubin ◽  
Jefferson Fernandes Alves
Keyword(s):  
Mechanical Properties ◽  
Electron Beam ◽  
Ionizing Radiation ◽  
Carboxymethyl Cellulose ◽  
Calcium Alginate ◽  
Gel Fraction ◽  
Lesion Type ◽  
Hydrophilic Membranes ◽  
Hydrophilic Membrane

Hydrophilic membranes based on PVP, containing 0.4 and 1% of carboxymethylcellulose staple fibers infused with calcium alginate were obtained and characterized in this study. The main proposal of this study is related to hydrogels based on PVP modified with carboxymethyl cellulose staple fibers infused with calcium alginate. This modified hydrogel is a hydrophilic membrane with better mechanical properties that can incorporate adequate drugs into the fibers for each lesion type. The hydrogels were obtained using ionizing radiation with an electron beam, at a dose of 25 kGy. The membrane’s characterization was performed by tensile and physic-chemical tests (gel fraction and swelling). The results obtained showed that the membranes have higher mechanical strength, a higher swelling degree and a lower gel fraction.

scholarly journals Corn Starch Reactive Blending with Latex from Natural Rubber in Presence of Na+ Ions of Carboxymethyl Cellulose as a Catalyst

2021 ◽  
Author(s):  
Noppol Leksawasdi ◽  
Thanongsak Chaiyaso ◽  
Pornchai Rachtanapun ◽  
Pensak Jantrawut ◽  
Warintorn Ruksiriwanich ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Contact Angle ◽  
Natural Rubber ◽  
Carboxymethyl Cellulose ◽  
Corn Starch ◽  
Carboxyl Groups ◽  
Reactive Blending ◽  
Swelling Properties ◽  
Elongation At Break ◽  
Na Ions

Abstract Corn starch (CS) was blended with glycerol, latex natural rubber (LNR), and carboxymethyl cellulose (CMC). The addition of 10 phr of CMC improved the Young’s modulus (6.7 MPa), tensile strength (8 MPa), and elongation at break (80%) of the CSG/LNR blend. The morphology of the CSG/LNR/CMC blends showed a uniform distribution of LNR particles (1–3 µm) in the CSG matrix. The addition of CMC enhanced the swelling ability and water droplet contact angle of the blends owing to the swelling properties, interfacial crosslinking, and amphiphilic structure of CMC. Fourier transform infrared spectroscopy confirmed the reaction between the C=C bond of LNR and the carboxyl groups (–COO-) of CMC, in which Na+ ions in CMC acted as a catalyst. Notably, the mechanical properties of the CSG/LNR/CMC blend were improved owing to the miscibility of CSG/CMC and the CMC/LNR interfacial reaction.

scholarly journals Mechanical Properties of Carboxymethyl Cellulose Edible Films

2019 ◽  
Vol 32 (1) ◽  
pp. 68-78 ◽  
Author(s):  
Safaa A. Laith ◽  
Alaa G. Al-Hashimi
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Carboxymethyl Cellulose ◽  
Thermal Characteristics ◽  
Edible Films ◽  
Cellulose Film ◽  
Cellulose Films ◽  
Infrared Spectrometer ◽  
Ft Ir ◽  
Elongation Percentage

This study was conducted to extract cellulose and synthesis  carboxymethyl cellulose from flour bran. Fourier Transform Infrared Spectrometer (FT-IR) was used to confirm the existent of the carboxymethyl group. The sample edible films were  prepared using 1, 2, 3, and 4 % CMC, and two types of plasticizers glycerol and  sorbitol, (20, 40 and 60) %. Their qualitative, mechanical, reservation and thermal characteristics were studied. Tensile strength ranged 28-51.3 MPa and elongation percentage ranged between 65.5-91.0 %. The thickness of simple cellulose films were 0.018-0.078 mm. The values of solubility (19.05-36.31%) and the permeability values  of simple cellulose film increased with the increasing of the plasticized ratio.  The highest permeability was 11.99 g.mm/m2.h.kp at 60% glycerol and thermogravimetric analysis for some simple cellulose film plasticized by glycerol were 135, 146.29, 125 and123.23° C.

scholarly journals Corn starch reactive blending with latex from natural rubber using Na+ ions augmented carboxymethyl cellulose as a crosslinking agent

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Noppol Leksawasdi ◽  
Thanongsak Chaiyaso ◽  
Pornchai Rachtanapun ◽  
Sarinthip Thanakkasaranee ◽  
Pensak Jantrawut ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Natural Rubber ◽  
Carboxymethyl Cellulose ◽  
Corn Starch ◽  
Crosslinking Agent ◽  
Medical Applications ◽  
Reactive Blending ◽  
Swelling Properties ◽  
Elongation At Break ◽  
Na Ions

AbstractA mixture of corn starch and glycerol plasticizer (CSG) was blended with latex natural rubber (LNR) and carboxymethyl cellulose (CMC). The addition of 10 phr of CMC improved the Young’s modulus (6.7 MPa), tensile strength (8 MPa), and elongation at break (80%) of the CSG/LNR blend. The morphology of the CSG/LNR/CMC blends showed a uniform distribution of LNR particles (1–3 µm) in the CSG matrix. The addition of CMC enhanced the swelling ability and water droplet contact angle of the blends owing to the swelling properties, interfacial crosslinking, and amphiphilic structure of CMC. Fourier transform infrared spectroscopy confirmed the reaction between the C=C bond of LNR and the carboxyl groups (–COO−) of CMC, in which the Na+ ions in CMC acted as a catalyst. Notably, the mechanical properties of the CSG/LNR/CMC blend were improved owing to the miscibility of CSG/CMC and the CMC/LNR interfacial reaction. The CSG/LNR/CMC biodegradable polymer with high mechanical properties and interfacial tension can be used for packaging, agriculture, and medical applications.

scholarly journals Experimental Studies on the Mechanical Properties of Loess Stabilized with Sodium Carboxymethyl Cellulose

2019 ◽  
Vol 2019 ◽  
pp. 1-8 ◽  
Author(s):  
Hongwang Ma ◽  
Qi Ma
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Compressive Strength ◽  
Carboxymethyl Cellulose ◽  
Experimental Studies ◽  
Loess Soil ◽  
Sodium Carboxymethyl Cellulose ◽  
Dry Density ◽  
Maximum Dry Density ◽  
Split Tensile Strength

This research investigated the use of sodium carboxymethyl cellulose (CMC) as a reinforcement to improve mechanical properties of loess soil found in northwestern China. The mechanical properties of loess were determined by unconfined compressive strength and split tensile strength tests. Three different contents of CMC were adopted: 0.5%, 1.0%, and 1.5%. The results showed that utilizing CMC reduced the maximum dry density of the loess. The compressive strength, tensile strength, and Young’s modulus are enough to construct low-rise buildings when the CMC content exceeds 1.0%, based on existing standards. This research thus provides a prospective sustainability method for loess stabilization.

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