Properties of blends of methyl cellulose and carboxymethyl cellulose with different degrees of ionization in solutions and solids

2008 ◽  
Vol 81 (4) ◽  
pp. 691-695 ◽  
Author(s):  
A. M. Bochek ◽  
I. L. Shevchuk ◽  
L. M. Kalyuzhnaya
Keyword(s):  
Carboxymethyl Cellulose ◽  
Methyl Cellulose

scholarly journals Analisis Penambahan Carboxymethyl Cellulose terhadap Edible Film Pati Umbi Garut sebagai Pengemas Buah Strawberry

2019 ◽  
Vol 3 (2) ◽  
pp. 77
Author(s):  
Rr. Dewi Artanti Putri ◽  
Desi Sulistyowati ◽  
Tias Ardhiani
Keyword(s):  
Carboxymethyl Cellulose ◽  
Methyl Cellulose ◽  
Edible Film ◽  
Carboxy Methyl Cellulose ◽  
Biodegradable Film ◽  
Carboxy Methyl

Edible film dari pati merupakan strategi penyusunan kemasan makanan bersifat biodegradable. Film dari  pati memiliki kekurangan sebagai kemasan makanan karena realtif mudah robek, sehingga perlu penambahan plasticizer gliserol agar lebih elastis. Sedangkan untuk meningkatkan kuat tarik dan perbaikan struktur permukaan digunakan turunan selulosa yaitu CMC (Carboxy Methyl Cellulose). Umbi garut berpotensial sebagai bahan baku edible film dengan kandungan pati 86,1%. Dalam penelitian ini dilakukan sintesis edible film dengan penambahan konsentrasi CMC bervariasi (0%, 5%, 10%, 15%, 20% b/b). Selanjutnya dilakukan karakterisasi pengaruh konsentrasi CMC pada ketebalan, ketahanan, kelarutan dalam air, kuat tarik, perpanjangan, dan elastisitas. Edible film dengan penambahan 20% CMC menunjukkan karakteristik ketebalan (0,144 mm), ketahanan terhadap air (93,75%), dan kelarutan dalam air (34%) terbaik. Edible Film dengan penambahan CMC 10% menunjukkan karakteristik kuat tarik (3,5597 Mpa) dan elastisitas (25,85 Mpa) terbaik. Nilai perpanjangan terbaik (18,3%) dengan penambahan CMC 15%. Edible film yang telah diaplikasikan pada buah strawberry dapat memperpanjang umur simpan buah hingga 4 hari.

scholarly journals Synthesis Carboxyl Methyl Cellulose (CMC) from Rice Straw (Oryza Sativa L.) Waste

2021 ◽  
Vol 2 (1) ◽  
pp. 24-29
Author(s):  
Masrullita Masrullita ◽  
Rizka Nurlaila ◽  
Zulmiardi Zulmiardi ◽  
Ferri Safriwardy ◽  
Auliani Auliani ◽  
...  
Keyword(s):  
Rice Straw ◽  
Carboxymethyl Cellulose ◽  
Oryza Sativa L ◽  
Economic Value ◽  
Chemical Properties ◽  
Methyl Cellulose ◽  
Basic Material ◽  
Cellulose Content ◽  
Total Production ◽  
Two Stages

Rice straw is one of material containing cellulose to produce Carboxymethyl Cellulose (CMC). CMC is a non toxic polysaccharide that produces from cellulose that widely used in the pharmaceutical, food, textile, detergent, and cosmetic products industries. There are two stages usually use to produce CMC which are mercerization and esterification processes. Rice straw waste is one of the materials to produce CMC, it has a cellulose content of 37.7%, hemi-cellulose 21.99%, and lignin 16.62 %.  BPS Aceh shown that the total rice harvested area was 310.01 hectares, with a total production of 1.71 million tons, and rice produced at 982.57 thousand ton. This study aims to reduce waste and environmental pollution caused by rice straw and collects information of rice straw as a basic material to produce of carboxymethyl cellulose and to increase the economic value of rice straw.  The effects of various wieght parameters sodium monochloroacetate on chemical properties of CMC that produce from rice straw were investigated in this research. Rice straw was collected from a rice field in Nisam, North Aceh. The research conducted by synthesizing 5 grams rice straw for 5.5 hours using NaOH and Sodium Monochloroacetate solutions. With variations weight of sodium monochloroacetate are 5,6,7,8 and 9 grams. The characterization of CMC was carried out by Fourier Transform Infrared (FTIR), CMC yield, DS, Viscosity, water content, pH. The result shows that addition of sodium monochloroacetate was significant factors influence the chemical properties on CMC. The CMC that produced in this study achieved to National Indonesia Standard (SNI).

scholarly journals  Effect of thickening agents on perceived viscosity  and acidity of model beverages

2012 ◽  
Vol 30 (No. 5) ◽  
pp. 442-445 ◽  
Author(s):  
Z. Panovská ◽  
A. Váchová ◽  
J. Pokorný
Keyword(s):  
Viscosity Solutions ◽  
Carboxymethyl Cellulose ◽  
Kinematic Viscosity ◽  
Xanthan Gum ◽  
Methyl Cellulose ◽  
High Viscosity ◽  
Sodium Carboxymethyl Cellulose ◽  
Hydroxyethyl Cellulose ◽  
Low Viscosity ◽  
Thickening Agents

The effect of thickening agents &ndash; methyl cellulose, hydroxyethyl cellulose, sodium carboxymethyl cellulose, and xanthan gum &ndash; solutions on the sensory viscosity was investigated in the concentration range of 0&ndash;0.8%. The perceived viscosity was proportional to the logarithm of kinematic viscosity in the presence of citric and malic acids. The viscosity was inversely proportional to the acidity at the viscosity levels higher than 10 mm<sup>2</sup>/s. A liquid of high viscosity thus possess lower acidity than aqueous or low-viscosity solutions. No significant differences were found between the effects of different thickening agents. &nbsp;

scholarly journals Formulation of a fast-dissolving oral film using gelatin and sodium carboxymethyl cellulose

2020 ◽  
Vol 24 (3) ◽  
pp. 338-346
Author(s):  
Jwan Ahmed ◽  
Dina Boya ◽  
Hunar Kamal
Keyword(s):  
Carboxymethyl Cellulose ◽  
Dosage Form ◽  
Methyl Cellulose ◽  
Petri Dish ◽  
Sodium Carboxymethyl Cellulose ◽  
Solvent Casting ◽  
Casting Method ◽  
Disintegration Time ◽  
Cellulose Solvent ◽  
Transparent Films

Background and objective: Orally disintegrating film is a solid dosage form made as an alternative for tablets for pediatric and geriatric patients who have difficulty in swallowing. These formulations are designed to dissolve in the mouth rapidly upon contact with saliva. This study aimed to prepare a thin oro-dispersible film base that can withstand handling in which a drug can be incorporated to provide a new dosage form. Methods: The solvent casting method was used to prepare the films, in which the ingredients were mixed, dissolved, and cast in a Petri dish. Then, they were left to dry in the oven overnight. Different concentrations of each of the two polymers alone and combined in different ratios were compared using different concentrations of plasticizer. Results: Successful, transparent films were prepared from gelatin and glycerin. A combination of 70% gelatin and 30% sodium carboxymethyl cellulose with glycerin formed an acceptable film having white color. The film forming capacity of sodium carboxymethyl cellulose alone was not good. All films were tearing and not well formed. All films that contain polyethylene glycol were brittle. Both superdisintegrants reduced the disintegration time for both films, but kyron was more effective than sodium starch glycolate. Conclusion: A successful oral film was prepared using different types of polymers, which is suitable for incorporating a potent drug to form a new dosage form that is easily portable and does not require water for swallowing. Keywords: Fast dissolving oral film; Gelatin; Sodium carboxy methyl cellulose; Solvent casting method.

scholarly journals Water barrier properties of carboxymethyl cellulose/halloysite nanotubes nanocomposite to be used in food packaging applications

2021 ◽  
Vol 24 (02) ◽  
Author(s):  
S.N. Wijesooriya ◽  
N. Adassooriya
Keyword(s):  
Water Vapor ◽  
Carboxymethyl Cellulose ◽  
Food Packaging ◽  
Water Solubility ◽  
Methyl Cellulose ◽  
Barrier Properties ◽  
Halloysite Nanotubes ◽  
Packaging Material ◽  
Nanocomposite Films ◽  
Moisture Uptake

In this research, novel carboxymethyl cellulose (CMC) based nanocomposite film containing 5%wt of halloysite nanotubes (HNT) was fabricated via solvent casting method as a potential biodegradable packaging material. The performances of the nanocomposite packaging material was investigated by assessing the moisture content, moisture uptake, water solubility, water vapor barrier properties and opacity. The incorporation of 5%wt HNT into the film remarkably reduced the moisture uptake by ∼ 28.01% at 97% RH and 31.08% at 40% RH. Water permeability value of CMC/HNT film showed as 7.08 ± 0.26 × 10−11 gm/m2Pas at freezing, 3.37 ± 0.33 × 10−11 gm/m2Pas at refrigeration and 1.14 ± 0.00 × 10−11 gm/m2Pas at ambient environmental conditions respectively. Subsequent to the thermal annealing process, the water vapor permeation ability was drastically declined in the HNT added nanocomposite films at all three different conditions (freezing, refrigeration and ambient) due to enhancing the crystalline structure. Furthermore, the addition of nanofillers into the polymer matrix significantly induced the UV blocking property of the film. These findings disclosed that prepared CMC/5%HNT nanocomposite films can be a potential food packaging material.Keywords: barrier properties, carboxy methyl cellulose, halloysite nanotubes

Solubility and Diffusivity of CO2in Natural Methyl Cellulose and Sodium Carboxymethyl Cellulose

2011 ◽  
Vol 56 (11) ◽  
pp. 4040-4044 ◽  
Author(s):  
Tina Perko ◽  
Elena Markočič ◽  
Željko Knez ◽  
Mojca Škerget
Keyword(s):  
Carboxymethyl Cellulose ◽  
Methyl Cellulose ◽  
Sodium Carboxymethyl Cellulose

Extraction of Organic Compound from Carboxymethyl Cellulose Wastewater

2013 ◽  
Vol 807-809 ◽  
pp. 1219-1222
Author(s):  
Jue Liang Xia ◽  
Bai Nian Ren ◽  
Yi Fan Tan ◽  
Pin Hua Rao ◽  
Tong Zhou Liu ◽  
...  
Keyword(s):  
Organic Compound ◽  
Carboxymethyl Cellulose ◽  
High Salinity ◽  
Methyl Cellulose ◽  
Oxygen Demand ◽  
Carboxy Methyl Cellulose ◽  
Distillation Method ◽  
Solution Ph ◽  
By Products ◽  
Carboxy Methyl

Carboxy methyl cellulose (CMC) wastewater contains high salinity (>10%) and chemical oxygen demand (COD) which results from organic by-products during production. It is usually necessary that the wastewater is pretreated before biochemical methods are employed. In this paper, distillation method was used to pretreat CMC wastewater and a kind of organic acid (Ethoxyacetic acid) was extracted. Effect of solution pH on the purity of ethoxyacetic acid was studied.

Hepatocyte Alterations in Guinea Pigs FED Polychlorinated Biphenyls (PCBs), Dibenzodioxins (PCDD), AND DIBENZOFURANS (PCDF)

1982 ◽  
Vol 40 ◽  
pp. 56-57
Author(s):  
J. N. Turner ◽  
D. N. Collins
Keyword(s):  
Guinea Pigs ◽  
Room Temperature ◽  
Dose Group ◽  
Methyl Cellulose ◽  
Uranyl Acetate ◽  
Target Organ ◽  
Office Building ◽  
Lead Citrate ◽  
Control Groups ◽  
Cooling Fluid

A fire involving an electric service transformer and its cooling fluid, a mixture of PCBs and chlorinated benzenes, contaminated an office building with a fine soot. Chemical analysis showed PCDDs and PCDFs including the highly toxic tetra isomers. Guinea pigs were chosen as an experimental animal to test the soot's toxicity because of their sensitivity to these compounds, and the liver was examined because it is a target organ. The soot was suspended in 0.75% methyl cellulose and administered in a single dose by gavage at levels of 1,10,100, and 500mgm soot/kgm body weight. Each dose group was composed of 6 males and 6 females. Control groups included 12 (6 male, 6 female) animals fed activated carbon in methyl cellulose, 6 males fed methyl cellulose, and 16 males and 10 females untreated. The guinea pigs were sacrificed at 42 days by suffocation in CO2. Liver samples were immediately immersed and minced in 2% gluteraldehyde in cacadylate buffer at pH 7.4 and 4°C. After overnight fixation, samples were postfixed in 1% OsO4 in cacodylate for 1 hr at room temperature, embedded in epon, sectioned and stained with uranyl acetate and lead citrate.

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