Epoxy Functionalized Hyberbranched Polymer/Epoxy Blends

1999 ◽  
Author(s):  
Thomas J. Mulkern ◽  
Donovan Harris ◽  
Alan R. Teets
Keyword(s):  
Polymers ◽  
2021 ◽  
Vol 13 (15) ◽  
pp. 2429
Author(s):  
Krittameth Kiatiporntipthak ◽  
Nanthicha Thajai ◽  
Thidarat Kanthiya ◽  
Pornchai Rachtanapun ◽  
Noppol Leksawasdi ◽  
...  

Polylactic acid (PLA) was melt-blended with epoxy resin to study the effects of the reaction on the mechanical and thermal properties of the PLA. The addition of 0.5% (wt/wt) epoxy to PLA increased the maximum tensile strength of PLA (57.5 MPa) to 67 MPa, whereas the 20% epoxy improved the elongation at break to 12%, due to crosslinking caused by the epoxy reaction. The morphology of the PLA/epoxy blends showed epoxy nanoparticle dispersion in the PLA matrix that presented a smooth fracture surface with a high epoxy content. The glass transition temperature of PLA decreased with an increasing epoxy content owing to the partial miscibility between PLA and the epoxy resin. The Vicat softening temperature of the PLA was 59 °C and increased to 64.6 °C for 0.5% epoxy. NMR confirmed the reaction between the -COOH groups of PLA and the epoxy groups of the epoxy resin. This reaction, and partial miscibility of the PLA/epoxy blend, improved the interfacial crosslinking, morphology, thermal properties, and mechanical properties of the blends.


2004 ◽  
Vol 42 (7) ◽  
pp. 1181-1191 ◽  
Author(s):  
Xueliang Jiang ◽  
Yong Zhang ◽  
Yinxi Zhang

2006 ◽  
Vol 100 (1) ◽  
pp. 516-521 ◽  
Author(s):  
N. Dutta ◽  
N. Karak ◽  
S. K. Dolui
Keyword(s):  

2021 ◽  
pp. 009524432110604
Author(s):  
Ganesan J ◽  
Jeyadevi S ◽  
Siva Kaylasa Sundari S ◽  
Arunjunai Raj M ◽  
Pitchaimari G ◽  
...  

In the present study, the aim is to synthesize the particulate nanocomposites with difunctional and trifunctional epoxy blend as matrix and synthesized nanoporous materials as fillers. Organic/inorganic hybrid networks were prepared by the novel solvent free method. Viscoelastic, thermal, and electrical properties of di- and trifunctional epoxy and the effect of different nanoparticles in the particulate nanocomposites have been studied by dynamic mechanical analyzer, thermogravimetry (TGA), and dielectric strength. Epoxy mixed with different compositions of TGPAP and particulate nanocomposites by the addition of different types of nanomaterials shows higher storage modulus than the pure epoxy. The addition of TGPAP and nanofillers decreases the thermal stability of epoxy matrix. The evolved gas analysis (TG-FTIR) was also done in order to study the products formed during degradation. An increase in dielectric strength and impact strength (4%) was also observed in the particulate nanocomposites.


2002 ◽  
Vol 42 (12) ◽  
pp. 2361-2368 ◽  
Author(s):  
C. E. Hoppe ◽  
M. J. Galante ◽  
P. A. Oyanguren ◽  
R. J. J. Williams ◽  
E. Girard-Reydet ◽  
...  
Keyword(s):  

2019 ◽  
Vol 675 ◽  
pp. 18-28 ◽  
Author(s):  
Giti Yamini ◽  
Alireza Shakeri ◽  
Mehdy Vafayan ◽  
Mohammad Jalal Zohuriaan-Mehr ◽  
Kourosh Kabiri ◽  
...  

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