Results 31 to 40 of about 6,897,562 (308)

Why Chain Length of Hyaluronan in Eye Drops Matters

open access: yesDiagnostics, 2020
The chain length of hyaluronan (HA) determines its physical as well as its physiological properties. Results of clinical research on HA eye drops are not comparable without this parameter.
Wolfgang G.K. Müller-Lierheim
doaj   +1 more source

The Effects of Reaction Variables on Solution Polymerization of Vinyl Acetate and Molecular Weight of Poly(vinyl alcohol) Using Taguchi Experimental Design [PDF]

open access: yesعلوم و تکنولوژی پلیمر, 2009
Poly(vinyl acetate) is synthesized via solution polymerization, and then it is converted to poly(vinyl alcohol) by alkaline alcoholysis. The aim of the work study was to investigate statistically the  influence of reaction variables in vinyl acetate ...
M.H. Navarchian, S. Mousazadeh
doaj   +1 more source

Radical scavenging activity of crude polysaccharides from Camellia sinensis [PDF]

open access: yesArchives of Biological Sciences, 2011
A preparation of crude polysaccharides (TPS) was isolated from Camellia sinensis by precipitation and ultrafiltration. TPS1, TPS2, and TPS3 had molecular weights of 240, 21.4, and 2.46 kDa, respectively.
Yang Fan, Yang Zhiwei, Xiao Jianbo
doaj   +1 more source

Molecular Weight of Melanin [PDF]

open access: yesNature, 1947
A METHOD of obtaining protein macro-molecules in crystalline form by the use of heparin has been described by Cohen1. As melanin is generally believed to have a high molecular weight, an attempt has been made to crystallize it by Cohen's method, using ethylene chlorhydrin as solvent.
openaire   +2 more sources

Microbial Conversion of Cheese Whey to Polyhydroxybutyrate (PHB) via Statistically Optimized Cultures

open access: yesFermentation, 2023
The intended circular economy for plastics envisages that they will be partially replaced by bio-based polymers in the future. In this work, the natural polyester polyhydroxybutyrate (PHB) was produced by Azohydromonas lata using cheese whey (CW) as a ...
Giannis Penloglou   +2 more
doaj   +1 more source

Synthesis of Prussian Blue-Containing Polymeric Nanocapsules via Interfacial Confined Coordination in Crosslinked Miniemulsion

open access: yesNanomaterials
Herein, we describe a versatile synthetic strategy for constructing Prussian Blue (PB)-coated polymeric nanocapsules (PB@nanocapsules) with tunable sizes and controlled PB loading.
Lin Wu   +4 more
doaj   +1 more source

Effect of Various Temperatures on Bletillae Rhizoma Polysaccharide Extraction and Physicochemical Properties

open access: yesApplied Sciences, 2018
Six fractional polysaccharides were prepared by water extraction and alcohol precipitation under controlled temperature from bletillae rhizoma, a traditional Chinese medicine.
Xiaoyan Long   +4 more
doaj   +1 more source

Functionalization of waterborne polyurethane with rosin and epoxidized soybean oil for high-performance, UV-shielding, and hydrophobic biobased films and cotton coatings

open access: yesIndustrial Crops and Products
The development of high-performance waterborne polyurethane (WPU) from biomass materials represents a significant issue in green industry. In this work, a rosin-based epoxidized soybean oil polyol (RE) was synthesized via a ring-opening reaction between ...
Tao Zhang   +13 more
doaj   +1 more source

Conditions for Shake-Gel Formation: The Relationship between the Size of Poly(Ethylene Oxide) and the Distance between Silica Particles

open access: yesMolecules, 2022
Colloidal silica suspensions are widely used in many fields, including environmental restoration, oil drilling, and food and medical industries. To control the rheological property of suspensions, poly(ethylene oxide) (PEO) polymers are often used. Under
Yi Huang   +2 more
doaj   +1 more source

Star Ultrahigh-Molecular-Weight Polyethylene

open access: yes, 2023
Star polymers have attracted immense interest from scientific and industrial communities due to their unique properties relative to linear polymers; however, the synthesis of the long-sought star polyolefins remains highly challenging because of the lack
Shilong Wu (5400815)   +4 more
core   +2 more sources

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