Results 21 to 30 of about 206,425 (281)

Synthesis of a Thin-Film Polyamide-Cellulose Acetate Membrane: Effect of Monomers and Porosity on Nano-Filtration Performance

open access: yesJournal of Natural Fibers, 2022
The present study highlights the influence of support and monomer properties on the performance of thin-film composite (TFC) membranes. For this purpose, a series of polyamide-cellulose acetate thin-film composite nanofiltration (TFC-NF) membranes were ...
Ibtissem Ounifi   +7 more
doaj   +1 more source

Sustainable Dyeing and Functionalization of Different Fibers Using Orange Peel Extract’s Antioxidants

open access: yesAntioxidants, 2022
A diluted ethanol orange peel extract was used for sustainable dyeing and functionalization of different fabrics. The extract analysis was performed using UPLC-ESI-MS/MS; its total flavonoid (0.67 g RE/100 g d.w.) and antioxidant (2.81 g GAE/100 g d.w ...
Aleksandra Ivanovska   +6 more
doaj   +1 more source

On the mechanism of separation of ethanol/water mixtures by pervaporation I. Calculations of concentration profiles [PDF]

open access: yes, 1984
A solution—diffusion model for the permeation of liquid mixtures through polymeric membranes taking into account coupling of fluxes has been developed.
Mulder, M.H.V., Smolders, C.A.
core   +3 more sources

Synthesis of cellulose acetate from palm oil bunches and dried jackfruit leaves

open access: yesE3S Web of Conferences, 2018
Cellulose acetate is a natural polymer, that is widely used in various industries, especially fiber and plastics. Cellulose acetate was created by an esterification reaction of cellulose and acetic anhydride.
Tristantini Dewi, Sandra Cindy
doaj   +1 more source

Homogenous esterification of cellulose pulp in [DBNH][OAc] [PDF]

open access: yes, 2017
Cellulose acetate is widely used in films, filters, textiles, lacquer and cosmetic products. Herein we demonstrate the production of cellulose esters under homogeneous conditions using 1,5-diazabicyclo[4.3.0]non-5-ene acetate ([DBNH][OAc]) as solvent ...
Kakko, Tia   +2 more
core   +1 more source

Advanced characterization of microbeads replacement from cellulose acetate based on empty fruit bunches and dried jackfruit leaves

open access: yesE3S Web of Conferences, 2018
The existing polymer microbeads for skin extraction ingredients have many disadvantages in environment. The application of cellulose has been proven in the pharmaceutical field in the form of beads on drug release can be a substitute alternative to ...
Tristantini Dewi, Yunan Andersen
doaj   +1 more source

Preferential sorption versus preferential permeability in pervaporation [PDF]

open access: yes, 1985
Transport of liquids by pervaporation takes place by a solution—diffusion mechanism. In order to investigate the “solution part” of this transport model, preferential sorption has been compared with preferential permeability.
Franken, T.   +2 more
core   +3 more sources

Determination of the degree of substitution (DS) of mixed cellulose esters by elemental analysis [PDF]

open access: yes, 2001
Equations for transforming the results of elemental analysis (EA) into degree of substitution (DS) values for aliphatic cellulose esters were developed.
Borredon, Marie-Elisabeth   +2 more
core   +3 more sources

Rapid identification of cellulose nitrate and cellulose acetate film in historic photograph collections

open access: yesHeritage Science, 2020
Cellulose nitrate transparent plastic film was used by photographers and movie filmmakers from its release in the 1880s to the 1950s. The storage of this material is a challenge for cultural institutions because of its instability and hazardous nature ...
Elizabeth A. Carter   +3 more
doaj   +1 more source

The Effect of NaOH Concentration and Acetylation Time on Synthesis of Kepok Banana Peel Cellulose Acetate

open access: yesCHEESA, 2023
The high production of kepok banana is generating a significant amount of peel waste, contributing to environmental pollution. To address this issue, an innovative solution is the conversion of kepok banana peel into cellulose acetate as raw material ...
Fia Kharisma Yasmin   +2 more
doaj   +1 more source

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