Impact of molecular weight on the formation
Impact of molecular weight on the formation of electrosprayed chitosan microcapsules as delivery vehicles for bioactive compounds. Gómez-Mascaraque LG(1), Sanchez G(2), López-Rubio A(3). Author information: (1)Food Quality and Preservation Department, IATA-CSIC, Avda. Agustin Escardino 7, 46980 Paterna, Valencia, Spain.
Many studies have been conducted recently using chitosan as a drug delivery biomaterial to treat diseases such as cancer , optical diseases , and colon diseases . Table 1 shows a selection of studies on the use of chitosan composites for drug delivery applications. A systematic series of N-trimethyl chitosan chloride polymer synthesized from different chitosans based on molecular weight (low
Impact of chitosan and polyacrylamide on formation
Impact of chitosan and polyacrylamide on formation of carbonaceous and nitrogenous disinfection by-products Article in Chemosphere 178 · March 2017 with 48 Reads How we measure 'reads'
Impact of chitosan and polyacrylamide on formation of carbonaceous and nitrogenous disinfection by-products
POLYACRYLAMIDE IN AGRICULTURE AND ENVIRONMENTAL LAND
POLYACRYLAMIDE IN AGRICULTURE AND ENVIRONMENTAL LAND MANAGEMENT R. E. Sojka,1 D. L. Bjorneberg,1 J. A. Entry,1 R. D. Lentzl and W. J. Orts2 1 Northwest Irrigation and Soils Research Laboratory, USDA Agricultural Research Service, 3793N-3600E Kimberly, Idaho 83341
We report a robust method to manufacture polyacrylamide-based functional hydrogel microspheres with readily tunable macroporous structures by utilizing a simple micromolding-based technique. Specifically, surface tension-induced droplet formation of aqueous solutions of chitosan and acrylamide in 2D-shaped micromolds followed by photoinduced polymerization leads to monodisperse microspheres.
Polyacrylamide degradation and its implications
High molecular weight (106–3 × 107 Da) polyacrylamide (PAM) is commonly used as a flocculant in water and wastewater treatment, as a soil conditioner, and as a viscosity modifier and friction
5-FU (Sigma-Aldrich, Barcelona, Spain, purity 99.80%). Acrylic acid (AA) has purity 99%, and the polymer was Carboxymethyl chitosan (Mw 30000-100000 fluka, Buchs, Switzerland, purity 98.90%). Ethylene glycol dimethacrylate (EGDMA, Merck) and benzoyl peroxide (Merck) were used as crosslinking agent and initiator, respectively.
Tough and Functional Cross-linked Bioplastics from Sheep
The precipitates were inserted into cellophane tubes (Viscofán S.A, Spain) and dialyzed against ∼ 16 MΩ ultrapure water (Wasserlab, Pamplona, Spain) 3 days, changing the water regularly
Chitosan CHIT100 and CHIT600 were from Acros Organics (Thermo Fischer Scientific Inc., Waltham, MA). Chitosan QS1 (from Paralomis granulosa) and QS2 (from Pandalus borealis) were from InFiQuS (Madrid, Spain). Chitosans (1 g) were dissolved in 90 mL of 0.1 M acetic acid and then 10 mL of 1 M sodium acetate pH 5.5 was added (1% (w/v) chitosan
EFFICIENCY OF CHITOSANS FOR THE TREATMENT OF PAPERMAKING
1 EFFICIENCY OF CHITOSANS FOR THE TREATMENT OF PAPERMAKING PROCESS WATER BY DISSOLVED AIR FLOTATION Ruben Mirandaa, Raluca Nicub, Isabel Latoura, Mihail Lupeib, Elena Bobub, Angeles Blancoa,* a Department of Chemical Engineering, Faculty of Chemistry, Complutense University of Madrid, Av. Complutense s/n, 28040 Madrid, Spain.
The use of admixtures in soils to improve their properties has been implemented since ancient times. Diverse conventional admixtures such as lime, fly ash, and cement have been added to soils. Also, petrochemicals and bacteria are increasingly used for soil improvement and soil stabilization both mechanically and chemically. However, the conventional admixtures for soils cause significant
- What is the molecular weight of Pam?
- The molecular weight (MW) of commercial PAM ranges from 10 5 to >10 7 Da. High MW PAM (>10 6 Da) has a wider range of applications due to its high viscosity, drag reduction capabilities, and water retention characteristics. 6, 7, 8 PAM is widely used in environmental systems including: 1. 2. 3.
- What is a polyacrylamide (PAM)?
- Polyacrylamides (PAMs) are relatively inexpensive polymers that are easily formulated to high molecular weights on the order of several million g/mol. PAM was first used in the paper industry in the mid-1950s.
- What is nonionic polyacrylamide PAM?
- Nonionic polyacrylamide PAM is mainly used for flocculation and sedimentation of various industrial wastewater, and clarification and disposal of precipitation. Many friends have little knowledge of this type of polyacrylamide. Today, I will introduce the characteristics, efficacy, and usage of nonionic polyacrylamide PAM.
- Is non ionic polyacrylamide a water soluble polymer?
- Non-ionic polyacrylamide is a water-soluble high molecular polymer or polyelectrolyte. The characteristics of nonionic polyacrylamide PAM can be simply divided into the following three points: It has relatively good water solubility and can be completely dissolved even in cold water.
