Effect of reactive poly(ethylene glycol) flexible chains on curing kinetics and impact properties of bisphenol-a glycidyl ether epoxy

2011 ◽  
Vol 124 (3) ◽  
pp. 2325-2332 ◽  
Author(s):  
Dahu Yao ◽  
Tapas Kuila ◽  
Kyung-Bok Sun ◽  
Nam-Hoon Kim ◽  
Joong-Hee Lee
2010 ◽  
Vol 123-125 ◽  
pp. 411-414 ◽  
Author(s):  
Da Hu Yao ◽  
Kyung Bok Sun ◽  
Peng Li ◽  
Joong Hee Lee

The curing reaction of the system bisphenol-A glycidol ether epoxy resin modified by poly (ethylene glycol) (PEO) and flexible amine (D-230) as curing agent has been studied by means of differential scanning calorimetry (DSC) and thermal scanning rheometry. The curing kinetic parameters have been calculated from the non-thermal DSC curve. The kinetic analysis suggests that the two-parameter autocatalytic model is more appropriate to describe the kinetics of the curing reaction of the system. Increasing the PU content leads to an increase in the heat of curing and has a little effect on the kinetic parameters apparent activation energy (Ea), pre-exponential factor (A), and order of the reaction (m and n). The rheological properties were measured by isothermal curing evolution. Introduction of PEO flexible chains delayed the polymerization. It has been confirmed that the introduction of PEO chains in the structure of the epoxy resin increases the mobility of the molecular segment of the epoxy networks and results in the decrease in glass transition temperature.


Coatings ◽  
2018 ◽  
Vol 8 (3) ◽  
pp. 99 ◽  
Author(s):  
Ji-Won Park ◽  
Jong-Gyu Lee ◽  
Gyu-Seong Shim ◽  
Hyun-Joong Kim ◽  
Young-Kwan Kim ◽  
...  

2019 ◽  
Vol 10 (32) ◽  
pp. 4485-4494 ◽  
Author(s):  
Karishma K. Adatia ◽  
Silke Keller ◽  
Tobias Götz ◽  
Günter E. M. Tovar ◽  
Alexander Southan

Functional polyacrylamide hydrogels containing multiple furfuryl anchor points for Diels–Alder reactions were prepared employing new macromonomers.


2014 ◽  
Vol 56 (2) ◽  
pp. 229-237 ◽  
Author(s):  
M. V. Markova ◽  
D. M. Mognonov ◽  
L. V. Morozova ◽  
A. I. Mikhaleva ◽  
B. A. Trofimov

RSC Advances ◽  
2016 ◽  
Vol 6 (8) ◽  
pp. 6065-6071 ◽  
Author(s):  
A. Sutti ◽  
T. Chaffraix ◽  
A. S. Voda ◽  
A. Taylor ◽  
K. Magniez

Fast and simple preparation of nano-capsules by water addition to poly(ethylene glycol)-block-poly(bisphenol A carbonate) copolymers in THF.


2016 ◽  
Vol 138 (29) ◽  
pp. 9212-9223 ◽  
Author(s):  
Jana Herzberger ◽  
Karl Fischer ◽  
Daniel Leibig ◽  
Matthias Bros ◽  
Raphael Thiermann ◽  
...  

2017 ◽  
Vol 8 (45) ◽  
pp. 6964-6971 ◽  
Author(s):  
Yanxin Qi ◽  
Bin Li ◽  
Yupeng Wang ◽  
Yubin Huang

Given the increasing prosperity of multifunctional poly(ethylene glycol) (mf-PEG), an amphiphilic triblock copolymer, poly(ethylene glycol)-block-poly(ε-caprolactone)-block-poly(allyl glycidyl ether) (mPEG-PCL-PAGE), was synthesized by a combination of living ring-opening polymerization (ROP) and click chemistry.


Sign in / Sign up

Export Citation Format

Share Document