Results 221 to 230 of about 6,244 (251)
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Properties of Polyurethane-modified Asphalt Based on Castor Oil
Journal of Highway and Transportation Research and Development (English Edition), 2017To develop a new type of modified asphalt, castor oil-contained asphalt is obtained with green renewable castor oil instead of petroleum-based polyols. The second monomer-liquefied methylene diphenyl diisocyanate (MDI) is gradually added to a pitch system with shearing, and castor oil-based polyurethane (PU)-modified asphalt is prepared. The dosages of
Lei Xia +3 more
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Preparation of Lactic Acid Based Polyurethanes Modified by Castor Oil
Advanced Materials Research, 2008A series of biodegradable lactic acid based Polyurethanes modified by castor oil (PLBA-PUs) have been successfully prepared by using a two steps method as follow: Firstly prepolymers with hydroxyl terminated are synthesized by copolymerization of L-lactic acid and 1, 4-butandiol (BD), and then react with castor oil (C.O.) and hexamethylene diisocynate (
Biao Fu +3 more
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Journal of Applied Polymer Science, 2022
AbstractIn this research, modified castor oil (MCO)‐based biocomposite has been synthesized and its structure is strengthened with waste polyethylene (PE) reinforcement. Both the petrochemical raw material used is reduced by 12 wt% and a new environmentally friendly biocomposite is produced using waste PE.
Ercan Aydoğmuş +3 more
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AbstractIn this research, modified castor oil (MCO)‐based biocomposite has been synthesized and its structure is strengthened with waste polyethylene (PE) reinforcement. Both the petrochemical raw material used is reduced by 12 wt% and a new environmentally friendly biocomposite is produced using waste PE.
Ercan Aydoğmuş +3 more
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Dermatologic Surgery, 2006
Deep type of melasma is difficult to treat. Various compositions for peeling have been formulated to accomplish this.Our purpose was to determine the safe use of the new formula, which was composed of phenol and castor oil.Different concentrations of phenol and castor oil were mixed in five formulations, and the solutions were tested on the forearms of
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Deep type of melasma is difficult to treat. Various compositions for peeling have been formulated to accomplish this.Our purpose was to determine the safe use of the new formula, which was composed of phenol and castor oil.Different concentrations of phenol and castor oil were mixed in five formulations, and the solutions were tested on the forearms of
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Synthesis and characterization of EPS reinforced modified castor oil-based epoxy biocomposite
Journal of Building Engineering, 2022© 2021In this research, both modified castor oil-based epoxy is synthesized and waste expanded polystyrene (EPS) is used as a filler in the newly improved biocomposite. The experimental work plan is optimized with response surface methodology (RSM) and the thermophysical properties of the biocomposites have been also evaluated with artificial neural ...
Ercan Aydoğmuş +3 more
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Preparation and properties of rigid polyurethane foam based on modified castor oil
Plastics, Rubber and Composites, 2016Castor oil polyol (COP) having a hydroxyl number of 400 mg KOH/g was prepared through the transesterification reaction of castor oil with glycerol. The effect of reaction temperature on the composition, hydroxyl number and viscosity of the COP products was studied.
Q. F. Li +6 more
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Dielectric Coating of Castor-Oil-Based Polyurethane Modified with Leucoemeralidine Polyaniline
International Journal of Polymeric Materials and Polymeric Biomaterials, 2013Dielectric composite coatings were prepared from the castor-oil-based polyurethane (PU) resin with incorporation of leucoemeralidine polyaniline (LB-PANI) nanofiber into resin for electrical insulation purposes. The LB-PANI nanofibers were synthesized via chemical oxidation polymerization of aniline with acetic acid and ammonium peroxydisulfate. The LB-
Parag A. Wasekar, Shashank T. Mhaske
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Castor oil-based polyurethane nanocomposites reinforced with organically modified clay
Journal of Elastomers & Plastics, 2016Polyurethane(PU) nanocomposites were prepared using high shear mixing from castor oil, 4,4′-diphenylmethane diisocyanate, and modified clay (Closite 30B) as filler. The synthesis was carried out in bulk and without catalyst in the presence of clay. The clay percentage was varied from 1% to 5% by weight of the nanocomposite.
Dheeraj Ahuja, Anupama Kaushik
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Carbohydrate Polymers, 2021
Due to the poor controlled release ability, bio-based materials are difficult for large scale application on controlled release fertilizers (CRFs). Starch-based polyol (SP) and castor oil (CO) were mutually modified, and a cross-linked polymer film was formed on the surface of urea by in-situ reaction, which improved the slow release ability of the bio-
Hongyu Tian +7 more
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Due to the poor controlled release ability, bio-based materials are difficult for large scale application on controlled release fertilizers (CRFs). Starch-based polyol (SP) and castor oil (CO) were mutually modified, and a cross-linked polymer film was formed on the surface of urea by in-situ reaction, which improved the slow release ability of the bio-
Hongyu Tian +7 more
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A novel boron-nitrogen modified castor oil as an ecofriendly and efficient lubricant additive
Journal of Dispersion Science and Technology, 2019Borate esters have been emerging as a good candidate in green additives for the increasing needs of environmental protection.
Ping Liu +4 more
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