Results 21 to 30 of about 105,720 (304)

Preparation and Performance Study of Citric Acid Modified Urea Formaldehyde Slow Release Fertilizer

open access: yesGuangdong nongye kexue, 2023
【Objective】In order to reduce the initial nutrient release rate of urea formaldehyde (UF) and to increase the mid- to late-stage nutrient release rate, citric acid (CA) was used to chemically modify urea formaldehyde to improve the UF nutrient release ...
Jing ZHANG, Yaqing LIU
doaj   +1 more source

In situ poly(urea-formaldehyde) microencapsulation of dicyclopentadiene [PDF]

open access: yes, 2003
Microencapsulated healing agents that possess adequate strength, long shelf-life, and excellent bonding to the host material are required for self-healing materials.
Brown, Eric N.   +3 more
core   +1 more source

Bio-adhesives from soy protein concentrate and montmorillonite: Rheological and thermal behaviour [PDF]

open access: yes, 2017
The incorporation of different amounts of montmorillonite (MMT) to soy protein concentrate (SPC) was used to improve the performance of the bio-nano-adhesive obtained.
Bacigalupe, Alejandro   +5 more
core   +2 more sources

Enhancing the properties of low density Hardwood Dyera costulata through impregnation with Phenolic Resin Admixed with Formaldehyde Scavenger. [PDF]

open access: yes, 2011
The formaldehyde emission, properties and decay durability of Dyera constulata wood, impregnated with low molecular weight phenol formaldehyde (LmwPF) resin mixed with urea were investigated.
Anwar, U.M.K.   +6 more
core   +1 more source

Adsorptive removal of noxious cadmium from aqueous solutions using poly urea-formaldehyde: A novel polymer adsorbent

open access: yesMethodsX, 2018
Cadmium is a heavy metal toxic that enters water resources through industrial, household, agricultural waste and non-sanitary landfill of urban and industrial wastes.
Mohammad Hadi Dehghani   +6 more
doaj   +1 more source

USING QUERCUS INFECTORIA GALL NUT TANNIN AS A BINDER INPARTICLEBOARDS PRODUCTION [PDF]

open access: yesMesopotamia Journal of Agriculture, 2006
Adhesives derived from oak (Quercus infectoria) galls tannin and urea-formaldehyde were used to produce particleboards of 18 mm. thickness from pinewood particles at 8 and 12% resin content and target density of 0.60 gm / cm3.
Walid A. Kasir
doaj   +1 more source

The Retention of Wet Strength Resins as Determined by the Kjeldahl Method [PDF]

open access: yes, 1952
True wet strength is not a gauge of water proofness of paper, but is a measure of the residual strength of the paper gauged by the mullen, tear, burst, and fold, after the paper has been completely soaked in water and the resistance to water penetration ...
Redmond, Walter J.
core   +1 more source

Formaldehyde-releasers: relationship to formaldehyde contact allergy. Contact allergy to formaldehyde and inventory of formaldehyde-releasers [PDF]

open access: yes, 2009
This is one of series of review articles on formaldehyde and formaldehyde-releasers (others: formaldehyde in cosmetics, in clothes and in metalworking fluids and miscellaneous).
Aalto-Korte   +105 more
core   +3 more sources

Copper‐based Materials for Photo and Electrocatalytic Process: Advancing Renewable Energy and Environmental Applications

open access: yesAdvanced Functional Materials, EarlyView.
Cu‐based catalysts as a cornerstone in advancing sustainable energy technologies are fully reviewed in this manuscript, highlighting their potential in photo‐ and electrocatalysis. It includes metallic copper, copper oxides, copper sulfides, copper halide perovskites, copper‐based metal–organic frameworks (MOFs), and covalent organic frameworks (COFs),
Jéssica C. de Almeida   +16 more
wiley   +1 more source

Preparation and Characterization of Bio-Oil Modified Urea-Formaldehyde Wood Adhesives

open access: yesBioResources, 2014
Wood-derived bio-oil was used to decrease formaldehyde emissions from urea-formaldehyde (UF) resin during the process of making three-layered plywood. The obtained bio-oil urea formaldehyde (BUF) resins were characterized by their physical, chemical, and
Ben Li   +4 more
doaj   +1 more source

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