Curing of Epoxy Resin with Styrene–Maleic Anhydride Copolymer: A Differential Scanning Calorimetric Investigation

1996 ◽  
Vol 8 (2) ◽  
pp. 281-293 ◽  
Author(s):  
R A Vora ◽  
H C Trivedi ◽  
C P Patel ◽  
J T Guthrie ◽  
Algy Kazlauciunas ◽  
...  
Keyword(s):  
Maleic Anhydride ◽  
Epoxy Resin ◽  
Differential Scanning Calorimetric ◽  
Calorimetric Investigation ◽  
Scanning Calorimetry ◽  
First Order ◽  
First Order Kinetics ◽  
Dynamic Scan ◽  
Styrene Maleic Anhydride ◽  
Maleic Anhydride Copolymer

Curing reactions of epoxy resin (EP-450) with stryene–maleic anhydride copolymer (St–MAn) samples are investigated by differential scanning calorimetry at a scan rate of 10 °C min−1 in an N2 atmosphere. The overall kinetic parameters of the curing reactions are estimated using Barrett as well as Freeman–Carroll methods based on a single dynamic scan. The curing reactions are found to follow overall first-order kinetics up to about 60–70% completion. Thermogravimetric analysis (TGA) of all the cured samples of epoxy resin (EP-450) with St–MAn copolymer samples has also been carried out at a heating rate of 10 °C min−1 in air.

Research of Synthesis and Heat Resistance on Lactic Acid-Styrene-Maleic Anhydride Copolymer

2013 ◽  
Vol 772 ◽  
pp. 25-29
Author(s):  
Jian Jiang Shang ◽  
Li Na Jiang ◽  
De Qiang Li ◽  
Xiao Yan Zhu
Keyword(s):  
Lactic Acid ◽  
Maleic Anhydride ◽  
Heat Resistance ◽  
Polymerization Process ◽  
Scanning Calorimetry ◽  
Thermo Gravimetric ◽  
Thermo Gravimetric Analyzer ◽  
Melt Copolymerization ◽  
Styrene Maleic Anhydride ◽  
Maleic Anhydride Copolymer

The polymerization process and heat resistance of lactic acid-styrene-maleic anhydride copolymer was studied. Lactic acid-polystyrene-maleic anhydride copolymer was prepared with styrene, maleic anhydride and lactic acid by melt copolymerization. Its structure was characterized by Infrared Spectrum (IR), and the thermal properties were tested by Differential Scanning Calorimetry (DSC) and Thermo Gravimetric Analyzer (TGA). The paper research on the effect of the proportion of different monomer and the polymerization process on the heat resistance mainly. The optimum conditions for the synthesis were determined by means of experiment: the content of catalyst was 0.5(wt%), the ratio of styrene-maleic anhydride and lactic was 0.6g/10g, at 170 °C. for 5 h. The results showed that the glass transition temperature (Tg) of the copolymer increased by 26.0°C.and the 5% weight-loss temperature of it increased by 25.0°C compared with pure polylactic acid.

Styrene-maleic anhydride copolymer esters as flow improvers of waxy crude oil

2009 ◽  
Vol 65 (3-4) ◽  
pp. 139-146 ◽  
Author(s):  
A.M. Al-Sabagh ◽  
M.R. Noor El-Din ◽  
R.E. Morsi ◽  
M.Z. Elsabee
Keyword(s):  
Maleic Anhydride ◽  
Crude Oil ◽  
Waxy Crude Oil ◽  
Waxy Crude ◽  
Styrene Maleic Anhydride ◽  
Maleic Anhydride Copolymer

Styrene-Maleic Anhydride Copolymer Esters as Flow Improvers of Waxy Crude Oil

2009 ◽  
Vol 30 (3) ◽  
pp. 420-426 ◽  
Author(s):  
A. M. Al-Sabagh ◽  
M. R. Noor El-Din ◽  
R. E. Morsi ◽  
M. Z. Elsabee
Keyword(s):  
Maleic Anhydride ◽  
Crude Oil ◽  
Waxy Crude Oil ◽  
Waxy Crude ◽  
Styrene Maleic Anhydride ◽  
Maleic Anhydride Copolymer

scholarly journals Properties of Styrene–Maleic Anhydride Copolymer Compatibilized Polyamide 66/Poly (Phenylene Ether) Blends: Effect of Maleic Anhydride Concentration and Copolymer Content

Materials ◽  
2020 ◽  
Vol 13 (5) ◽  
pp. 1237 ◽  
Author(s):  
Alper Aksit ◽  
Teresa Menzel ◽  
Merve Aksit ◽  
Volker Altstädt
Keyword(s):  
Electron Microscopy ◽  
Maleic Anhydride ◽  
Thermomechanical Properties ◽  
Cohesive Failure ◽  
Polyamide 66 ◽  
Interfacial Activity ◽  
Transmission Electron ◽  
Twin Screw ◽  
Styrene Maleic Anhydride ◽  
Maleic Anhydride Copolymer

Polyamide 66 (PA66)/poly (2,6-dimethyl-1,4-phenylene ether) (PPE) blends with a ratio of 50/50 (w/w) were produced by a twin-screw compounder. The immiscible blends were compatibilized using two different styrene–maleic anhydride copolymers (SMA) with a low (SMAlow) and a high (SMAhigh) maleic anhydride (MA) concentration of 8 and 25 wt%, respectively. Furthermore, the SMA content was varied from 0 to 10 wt%. The influence of MA concentration and SMA content on the morphological and thermomechanical properties of PA66/PPE blends was investigated. Herein, we established correlations between the interfacial activity of the SMA with blend morphology and corresponding tensile properties. A droplet-sea to co-continuous morphology transition was shown by scanning electron microscopy to occur between 1.25 and 5 wt% in the case of SMAhigh. For SMAlow, the transition started from 7.5 wt% and was still ongoing at 10 wt%. It was found that SMAlow with 10 wt% content enhanced the tensile strength (10%) and elongation at break (70%) of PA66/PPE blends. This improvement can be explained by the strong interfacial interaction of SMAlow within the blend system, which features the formation of nanoemulsion morphology, as shown by transmission electron microscopy. Very small interdomain distances hinder matrix deformations, which forces debonding and cohesive failure of the PPE phase as a “weaker” main deformation mechanism. Due to a lack of interfacial activity, the mechanical properties of the blends with SMAhigh were not improved.

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