Synthesis of palm oil-based polyester polyol for polyurethane adhesive production

2013 ◽  
Vol 131 (6) ◽  
pp. n/a-n/a ◽  
Author(s):  
Khoon Poh Ang ◽  
Choy Sin Lee ◽  
Sit Foon Cheng ◽  
Cheng Hock Chuah
2018 ◽  
Vol 135 (44) ◽  
pp. 46861 ◽  
Author(s):  
F. H. Yeoh ◽  
C. S. Lee ◽  
Y. B. Kang ◽  
S. F. Wong ◽  
S. F. Cheng

Polymers ◽  
2020 ◽  
Vol 12 (8) ◽  
pp. 1842
Author(s):  
Fang Hoong Yeoh ◽  
Choy Sin Lee ◽  
Yew Beng Kang ◽  
Shew Fung Wong ◽  
Sit Foon Cheng ◽  
...  

Being biodegradable and biocompatible are crucial characteristics for biomaterial used for medical and biomedical applications. Vegetable oil-based polyols are known to contribute both the biodegradability and biocompatibility of polyurethanes; however, petrochemical-based polyols were often incorporated to improve the thermal and mechanical properties of polyurethane. In this work, palm oil-based polyester polyol (PPP) derived from epoxidized palm olein and glutaric acid was reacted with isophorone diisocyanate to produce an aliphatic polyurethane, without the incorporation of any commercial petrochemical-based polyol. The effects of water content and isocyanate index were investigated. The polyurethanes produced consisted of > 90% porosity with interconnected micropores and macropores (37–1700 µm) and PU 1.0 possessed tensile strength and compression stress of 111 kPa and 64 kPa. The polyurethanes with comparable thermal stability, yet susceptible to enzymatic degradation with 7–59% of mass loss after 4 weeks of treatment. The polyurethanes demonstrated superior water uptake (up to 450%) and did not induce significant changes in pH of the medium. The chemical changes of the polyurethanes after enzymatic degradation were evaluated by FTIR and TGA analyses. The polyurethanes showed cell viability of 53.43% and 80.37% after 1 and 10 day(s) of cytotoxicity test; and cell adhesion and proliferation in cell adhesion test. The polyurethanes produced demonstrated its potential as biomaterial for soft tissue engineering applications.


2018 ◽  
Vol 112 ◽  
pp. 378-388 ◽  
Author(s):  
Athanasia A. Septevani ◽  
David A.C. Evans ◽  
Darren J. Martin ◽  
Pratheep K. Annamalai

2013 ◽  
Vol 48 (3) ◽  
pp. 190-194 ◽  
Author(s):  
Kyung Ho Jin ◽  
Min Su Kim ◽  
Ur Ryong Cho

2014 ◽  
Vol 28 (11) ◽  
pp. 1020-1033 ◽  
Author(s):  
Ang Khoon Poh ◽  
Lee Choy Sin ◽  
Cheng Sit Foon ◽  
Chuah Cheng Hock

2012 ◽  
Vol 262 ◽  
pp. 551-556 ◽  
Author(s):  
Shuang Lian Chen ◽  
Guang Xue Chen ◽  
Jiang Wen Liu

The first component of the Polyurethane adhesive was prepared with polyester polyol, polyether polyol ,castor oil and isophorone diisocyanate. And this component was mixed with the castor oil and its modified production to prepare a two-component solvent-free aliphatic polyurethane laminating adhesive. In this study, the influences of the copolymerization ratio of polyester/ether on viscosity, heat resistance, adhesion strength and boiling resistance were studied, as well as influences of castor oil and its modified production on curing speed and adhesion strength. The results showed that when proportion of polyether diol was 25% and castor oil was 50% of the total hydroxyl content of first component, the PU adhesive with lower viscosity, better reactivity and enhanced boiling resistance would be achieved. And with an appropriate amount of derivatives castor oil in second component, the curing speed and adhesion strength of the PU adhesive were significantly improved.


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