Cellulose Acetate

• CAS: 9004-35-7
• Catalog Number: ACM9004357-21
• Category: Main Products
• Molecular Weight: 264.23g/mol
• Molecular Formula: C10H16O8
• Description: Cellulose acetate was used in the fabrication of gold microelectrode for electrochemical monochloramine measurement. Cellulose acetate based membranes are used in the separations in aqueous systems and in reverse osmosis process. It has been reported to be used to desalinate seawater.Cellulose acetate was used for biosensor encapsulation. It was used in the preparation of cellulose acetate nanofibre felt structure, cellulose acetate fibers.
• Synonyms: Acetylcellulose; Cellulose Acetate; 9004-35-7; Acetylcellulose; Cellulose, acetate; Acetate cotton; Acetate ester of cellulose; Acetose
• IUPAC Name: [(2R,3S,4S,5R,6R)-5-acetyloxy-3,4,6-trihydroxyoxan-2-yl]methyl acetate
• Canonical SMILES: CC(=O)OCC1C(C(C(C(O1)O)OC(=O)C)O)O
• InChI: InChI=1S/C10H16O8/c1-4(11)16-3-6-7(13)8(14)9(10(15)18-6)17-5(2)12/h6-10,13-15H,3H2,1-2H3/t6-,7-,8+,9-,10-/m1/s1
• InChI Key: SMEGJBVQLJJKKX-HOTMZDKISA-N
• Melting Point: Approx 260 °C
• Flash Point: Not applicable
• Density: 1.3 g/mL at 25 °C (lit.)
• Solubility: Insol in acetone, ethyl acetate, cyclohexanol, nitropropane, ethylene dichloride
• Appearance: Solid
• Application: Used as a polymer (acetate fibers, yarn, and plastics), waterproofing agent (fabrics), and to make rubber and celluloid substitutes; Also used in nonflammable photographic films, varnishes and lacquers, filaments, phonograph records; magnetic tapes, coatings for skins, wire insulation, thermoplastic molds, cell membranes, sewage treatment, and food packaging.
• Color/Form: White flakes or powder;Fiber is silk-like;PALE OR COLORLESS
• Complexity: 317
• Covalently-Bonded Unit Count: 1
• EC Number: 618-380-7
• Exact Mass: 264.084517g/mol
• Formal Charge: 0
• H-Bond Acceptor: 8
• H-Bond Donor: 3
• Heavy Atom Count: 18
• Monoisotopic Mass: 264.084517g/mol
• Other Experimental: Commercial products do not have sharp melting points;DIELECTRIC CONSTANT RESISTIVITY: 1X10+10-1X10+13 OHM-CM /HARD & SOFT CELLULOSE ACETATE/;DIELECTRIC CONSTANT: 3.5-7.5, 60 CPS; 3.2-7.0, 1X10+6 CPS /HARD & SOFT CELLULOSE ACETATE/;DISSIPATION FACTOR: 0.01-0.06, 60 CPS; 0.01-0.10, 1X10+6 CPS /HARD & SOFT CELLULOSE ACETATE/;MODULUS OF ELASTICITY, 1X10+3 PSI: 86-250; TENSILE STRENGTH, PSI: 1,900-4,700 /SOFT CELLULOSE ACETATE/;MODULUS OF ELASTICITY, 1X10+3 PSI: 190-400; TENSILE STRNEGTH, PSI: 4,600-8,500 /HARD CELLULOSE ACETATE/;CHEM RESISTANCE: WEAK MINERAL ACIDS, FAIR-GOOD; STRONG MINERAL ACIDS, POOR /HARD & SOFT CELLULOSE ACETATE/;CHEM RESISTANCE: CONCN OXIDIZING ACIDS, VERY POOR; WEAK ALKALIES, POOR HARD & SOFT CELLULOSE ACETATE/;CHEM RESISTANCE: STRONG ALKALIES, VERY POOR; ALCOHOLS, POOR; KETONES, POOR; ESTERS, POOR /HARD & SOFT CELLULOSE ACETATE/;CHEM RESISTANCE: ALIPHATIC HYDROCARBONS, FAIR-GOOD; AROMATIC HYDROCARBONS, POOR-FAIR /HARD & SOFT CELLULOSE ACETATE/;CHEM RESISTANCE: VEGETABLE, ANIMAL, MINERAL OILS, FIR-GOOD /HARD & SOFT CELLULOSE ACETATE/;CLARITY: EXCELLENT; INDEX OF REFRACTION: 1.46-1.50 /HARD & SOFT CELLULOSE ACETATE/;Insol in water, alcohol, ether; sol in glacial acetic acid /Triacetate/;Insol in water, alcohol, ether, glacial acetic acid, methanol. /Tetraacetate/;Insol in water, sol in alcohol /Pentaacetate/;A thermoplastic resin; softens @ approx. 60-97 °C;Polymers characterized by their high transparency, scratch resistance and toughness; limited thermal, weather and chemical resistance...relatively high water absorption.;Acetate fibers have bright, lustrous appearance and lower strength and abrasion resistance compared to most other manmade fibers. They are weakened by prolonged exposure to elevated temperatures in air.
• Physical State: Solid
• Rotatable Bond Count: 5
• XLogP3: -2

Case Study

Optical Cellulose Fibers Made from Cellulose Acetate for Use in Sensors

Orelma, Hannes, et al. Cellulose 27 (2020): 1543-1553.

Optical cellulose fibers for water sensing were prepared using Cellulose Acetate. The core of the fiber was prepared from cellulose dissolved in [EMIM]OAc, which was then wet-spun into water. The cladding on the cellulose core was produced by applying a layer of cellulose acetate dissolved in acetone using a filament coater. The chemical and optical properties of regenerated cellulose and cellulose acetate in cast films were investigated using UV-visible spectroscopy and Fourier transform infrared spectroscopy measurements. The regenerated cellulose film was observed to absorb UV light, passing visible wavelengths. The tensile strength of the fiber was 120 MPa. The prepared optical fiber guided light in the range of 500-1400 nm. The attenuation constant of the cellulose fiber was observed to be 6.3 dB/cm at 1300 nm. The use of the prepared optical cellulose fiber in water sensor applications was demonstrated. When the optical fiber was placed in water, a significant attenuation of the light intensity was observed. The investigated optical fiber can be used in sensor applications, where easy modification and high heat resistance are advantageous properties.
The core filaments were prepared from the cellulose spinning solution using a laboratory-scale wet-jet spinning apparatus equipped with a spinning nozzle. The dissolved cellulose was filled into a 10 ml plastic syringe and then passed through a nozzle (diameter and length of 0.41 lm and 31.75 mm, respectively) into a water coagulation bath. A constant rotation rate of 0.5 ml/min was used. After spinning, the filaments were placed in water for at least two hours and then dried under tension at room temperature and ambient humidity. The coating layer was prepared on the core filament using a homemade coater. 25 g of cellulose acetate was dissolved in 25 g of acetone using a laboratory mixer. The dissolved CA was placed in the coater and the pre-made filaments were pulled out through the homemade filament coater. The acetone was evaporated from the coated filaments at room temperature. The thickness of the cellulose acetate layer was determined by the diameter of the output hole.

Preparation of ultrafine fibrous cellulose membranes from cellulose acetate

Liu, Haiqing, and You-Lo Hsieh. Journal of Polymer Science Part B: Polymer Physics 40.18 (2002): 2119-2129.

Three solvents, acetone, acetic acid, and dimethylacetamide (DMAc), with certain solubility parameters, surface tensions, viscosities, and boiling temperatures were used to generate mixtures for electrospinning cellulose acetate (CA). While none of these solvents formed fibers continuously on their own, mixing DMAc with acetone or acetic acid produced a suitable solvent system. The 2:1 acetone:DMAc mixture was the most versatile mixture as it allowed for continuous electrospinning of fibrous membranes from 12.5-20% CA concentrations. These CA solutions, with 1.2 to 10.2 poise and approximately 26 dynes/cm, produced smooth fibers with diameters ranging from 100 nm to 1 m. Fiber size generally decreased with decreasing CA concentration. The nature of the collector affected the morphology and packing of the fibers. Fibers collected on paper had more uniform size, smooth surfaces, and fewer defects, whereas fibers collected in water had greater size variation. The pores in the membranes collected on aluminum foil and paper were better interconnected in the planar direction than those in the membranes collected on water. There is evidence that electrospinning can induce fiber ordering. Deacetylation of CA membranes in NaOH/ethanol was more efficient and complete than in aqueous NaOH, producing DS values between 0.15 and 2.33 without altering the fiber surface, packing, or organization. Fully regenerated cellulose membranes had similar hydrophilicity to commercial cellulose fiber substrates but absorbed nearly 10 times more water than commercial cellulose fiber substrates.
CA was dissolved in acetone, acetic acid, DMAc, and their mixtures under constant stirring at room temperature. For electrospinning, each polymer solution was placed in a glass capillary and a stainless steel electrode was immersed in the solution and connected to a power supply. A grounded counter electrode was connected to a collector consisting of paper, aluminum foil, copper mesh, and water. At a critical voltage, the electrostatic force acting on the cone surface overcomes the surface tension of the solution and the jet is ejected and accelerated toward the grounded collector by the electric field generated between the electrode and the counter electrode. While traveling, electrostatic instabilities caused the jet to split into many smaller filaments, which were placed on the collector in a random manner to form an interconnected fibrous membrane. As the solvent evaporated, the polymer filaments solidified on the collector. The obtained CA membrane was separated from the collector and dried under vacuum at 80 °C for 10 h.

Custom Reviews

July 13, 2024

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Efficient Isolation of RBC-EVs using Cellulose Acetate Syringe Filters
As a researcher in the science field, I have been using Cellulose Acetate syringe filters from Alfa Chemistry for the isolation of RBC-EVs in my experiments. I must say, I have been extremely impressed with the performance and efficiency of these filters.

July 30, 2024

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Exceptional Cellulose Acetate Filter for Precise Cell Sorting
I recently had the opportunity to work with the cellulose acetate filter from Alfa Chemistry during a cellular sorting experiment. The filter provided exceptional quality and precision, allowing for accurate separation of EYFP+/ABCB1+ cells during flow cytometry analysis.

Custom Q&A

What is the PubChem CID of cellulose acetate?

The PubChem CID of cellulose acetate is 57469.

What is the molecular formula of cellulose acetate?

The molecular formula of cellulose acetate is C14H16N4.

What is the molecular weight of cellulose acetate?

The molecular weight of cellulose acetate is 240.30 g/mol.

What is the IUPAC name of cellulose acetate?

The IUPAC name of cellulose acetate is 1-(2-methylpropyl)imidazo[4,5-c]quinolin-4-amine.

What is the InChIKey of cellulose acetate?

The InChIKey of cellulose acetate is DOUYETYNHWVLEO-UHFFFAOYSA-N.

What are the synonyms of cellulose acetate?

Some synonyms of cellulose acetate include IMIQUIMOD, Aldara, and Zyclara.

What is the CAS number of cellulose acetate?

The CAS number of cellulose acetate is 99011-02-6.

What is the ChEMBL ID of cellulose acetate?

The ChEMBL ID of cellulose acetate is CHEMBL1282.

What is the UNII of cellulose acetate?

The UNII of cellulose acetate is P1QW714R7M.

What is the Wikipedia page for cellulose acetate?

The Wikipedia page for cellulose acetate is "Imiquimod".