Description
Specifications Table
Product Name – Polyethylene oxide, M.W. 100,000
Quantity/Pack Size – 100g, 25g, 500g
Form – Powder
Grade – Laboratory
Application – Viscosity modifier, film-forming agent, drug delivery systems
Product Overview
Polyethylene oxide (PEO) with a molecular weight of 100,000 is a water-soluble, nonionic polymer renowned for its exceptional film-forming, thickening, and lubricating properties. This high-purity grade is synthesized through controlled polymerization, ensuring consistent molecular weight distribution and minimal impurities. Its linear chain structure provides excellent solubility in water and organic solvents, making it versatile for various formulations. PEO 100K exhibits low toxicity and high biocompatibility, which is critical for applications requiring stringent safety standards. The polymer’s unique rheological properties allow it to modify viscosity efficiently without altering the chemical stability of the final product. Its thermal stability ensures performance across a broad temperature range, while its resistance to hydrolysis extends shelf life in aqueous solutions. Whether used as a binder, dispersant, or release agent, this grade delivers reproducible results in research and development settings. The powder form facilitates precise dosing and homogeneous mixing in both small-scale and bulk preparations.
FAQs
1. What is the solubility profile of polyethylene oxide (MW 100,000) in different solvents?
Polyethylene oxide with a molecular weight of 100,000 is fully soluble in water and partially soluble in alcohols like methanol and ethanol. It remains insoluble in most hydrophobic solvents such as acetone, chloroform, and hexane. Solubility decreases with increasing molecular weight, so pre-dissolving in warm water can enhance dispersion.
2. How does the molecular weight of 100,000 affect the viscosity of solutions?
A molecular weight of 100,000 places this PEO grade in the mid-range viscosity spectrum. It forms moderately viscous solutions at low concentrations (1-5%), with viscosity increasing non-linearly as concentration rises. Higher molecular weights would yield more viscous solutions, while lower MW grades produce thinner, less cohesive formulations.
3. Can this PEO grade be sterilized for biological applications?
Yes, polyethylene oxide (MW 100,000) can be sterilized using autoclaving (121°C for 15-20 minutes) or gamma irradiation without significant degradation. Avoid prolonged exposure to high temperatures, as thermal oxidation may occur over time. Filter sterilization (0.22 µm) is also effective for aqueous solutions.
4. What precautions should be taken when storing polyethylene oxide powder?
Store the powder in a tightly sealed container in a cool, dry environment (below 30°C) away from direct sunlight and moisture. PEO is hygroscopic and can absorb atmospheric water, leading to clumping. Desiccants may be used in storage containers to maintain dryness. Avoid exposure to strong oxidizing agents.
5. Is this PEO grade compatible with common laboratory surfactants?
Polyethylene oxide (MW 100,000) is generally compatible with nonionic and anionic surfactants like Tween, Span, and SDS at moderate concentrations. Cationic surfactants may interact with PEO chains, potentially causing phase separation or precipitation. Pre-formulation compatibility testing is recommended for critical applications.
