Effect of reactive organoclay on physicochemical properties of vegetable oil-based waterborne polyurethane nanocomposites

RSC Advances ◽  
2015 ◽  
Vol 5 (15) ◽  
pp. 11524-11533 ◽  
Author(s):  
T. Gurunathan ◽  
Smita Mohanty ◽  
Sanjay K. Nayak

The environmentally friendly vegetable oil-based waterborne polyurethane–organoclay nanocomposites have been successfully synthesized from castor oil polyols, isophorone diisocyanate and dimethylolpropionic acid.

2014 ◽  
Vol 955-959 ◽  
pp. 88-91 ◽  
Author(s):  
Zhe Yang ◽  
Yan Bin Zhu ◽  
Fang Peng ◽  
Chang Qing Fu

The undecylenate based diol (UAD) has been synthesized from undecylenate by esterification and thiol-ene click reaction sequently, and then it was used as a diol to prepare bio-based waterborne polyurethane (WPU) reacting with isophorone diisocyanate (IPDI) and castor oil-based carboxyl hydrophilic chain extender. The structure of undecylenate based diol was verified by hydrogen proton nuclear magnetic resonance (1H NMR). Fourier transform infrared spectroscopy (FT-IR) was used to characterize the structure of WPU film. Furthermore, particle size and viscosity were used to character apparent properties of the bio-based waterborne polyurethane dispersion. The result shows that: bio-based waterborne polyurethane dispersion is transparent and very stable under room temperature. This work provides a simple and efficient method for the preparation of fatty acids based polyols and bio-based waterborne polyurethanes.


RSC Advances ◽  
2016 ◽  
Vol 6 (38) ◽  
pp. 31698-31704 ◽  
Author(s):  
Kai Liu ◽  
Zhiguo Su ◽  
Shida Miao ◽  
Guanghui Ma ◽  
Songping Zhang

A simple, green, robust and efficient method has been developed for the preparation of an anti-biofouling coating by directly mixing antifouling enzymes with a castor oil-based waterborne polyurethane (WPU) dispersion.


2016 ◽  
Vol 151 ◽  
pp. 1203-1209 ◽  
Author(s):  
Arantzazu Santamaria-Echart ◽  
Lorena Ugarte ◽  
Clara García-Astrain ◽  
Aitor Arbelaiz ◽  
Maria Angeles Corcuera ◽  
...  

2016 ◽  
Vol 133 (47) ◽  
Author(s):  
María Eugenia Victoria Hormaiztegui ◽  
Verónica Luján Mucci ◽  
Arantzazu Santamaria-Echart ◽  
María Ángeles Corcuera ◽  
Arantxa Eceiza ◽  
...  

2016 ◽  
Vol 723 ◽  
pp. 556-566 ◽  
Author(s):  
Nader Nciri ◽  
Jeong Hyun Kim ◽  
Nam Ho Kim ◽  
Nam Jun Cho

Up to date, no extravagant attempts have been made to use the vegetable oil-based polyols as rejuvenator agents for aged asphalts. In this context, the nature and composition of these biodegradable products need to be identified and physicochemical properties of different nature of compounds need to be measured. Three different vegetable oil-based polyols designed as castor oil polyol, soybean flexible polyol, and soybean rigid polyol were characterized by FT-IR, TLC-FID, 1H-NMR, and 13C-NMR and by the determination of some usual characteristics such as acid value, hydroxyl value, iodine value, and viscosity. It is speculated that the soybean flexible polyol may serve as a potential rejuvenator for aged asphalts.


2021 ◽  
Author(s):  
Pakin Noppawan ◽  
Suwiwat Sangon ◽  
Nontipa Supanchaiyamat ◽  
Andrew J. Hunt

Multicomponent one-pot Biginelli reactions have been successfully performed using vegetable oil as bio-based, non-toxic, and environmentally friendly solvents. Palm oil was demonstrated to be a highly effective greener solvent as...


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