Random poly(ε‐caprolactone‐L‐alanine) by direct melt copolymerization

2020 ◽  
Vol 69 (11) ◽  
pp. 1161-1168
Author(s):  
Slim Salhi ◽  
Jihen Mahfoudh ◽  
Souhir Abid ◽  
Leonard‐Ionut Atanase ◽  
Marcel Popa ◽  
...  
Keyword(s):  
Melt Copolymerization

The incorporation of rigid diol monomers into poly(butylene terephthalate) via solid-state copolymerization and melt copolymerization

2007 ◽  
Vol 46 (4) ◽  
pp. 1203-1217 ◽  
Author(s):  
M. A. G. Jansen ◽  
L. H. Wu ◽  
J. G. P. Goossens ◽  
G. de Wit ◽  
C. Bailly ◽  
...  
Keyword(s):  
Solid State ◽  
Butylene Terephthalate ◽  
Melt Copolymerization

Synthesis and characterization of novel maleated poly(d,l-lactide-co-glycolide) by direct melt copolymerization

2015 ◽  
Vol 72 (6) ◽  
pp. 1531-1543 ◽  
Author(s):  
Zhihua Zhou ◽  
Huihua Huang ◽  
Tianlong Huang ◽  
Cheng Peng ◽  
Hu Zhou ◽  
...  
Keyword(s):  
Synthesis And Characterization ◽  
Melt Copolymerization

Synthesis of a Biodegradable Material Poly(lactic acid-co-melamine) via Direct Melt Polycondensation

2013 ◽  
Vol 781-784 ◽  
pp. 503-506
Author(s):  
Min Hua Feng ◽  
Jin Feng Xiong ◽  
Qun Fang Wang ◽  
Zhao Yang Wang
Keyword(s):  
Lactic Acid ◽  
Flame Retardant ◽  
Stannous Chloride ◽  
Feed Ratio ◽  
Poly Lactic Acid ◽  
Biodegradable Material ◽  
Melt Polycondensation ◽  
Melt Copolymerization ◽  
Molar Feed Ratio ◽  
Direct Melt Polycondensation

Directly starting fromD,L-lactic acid (LA) and melamine (MA), novel star-shaped biodegradable material poly (lactic acid-co-melamine) [P(LA-co-MA)] as a kind of potential flame retardant is synthesized via melt polycondensation. When the molar feed ration(LA)/n(MA) is 60/1, the optimal synthetic conditions are discussed. After the prepolymerization at 140 °C for 8 h, using 0.4wt% stannous chloride as the catalyst, the melt copolymerization at 160 °C for 8 h gives the copolymer with the biggest intrinsic viscosity 0.87 dLg-1.

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.

The migrational melt copolymerization of anilinefluorene with some aliphatic bis-maleimides

1981 ◽  
Vol 23 (8) ◽  
pp. 1935-1943
Author(s):  
S.V. Vinogradova ◽  
Ya.S. Vygodskii ◽  
V.A. Adigezalov ◽  
V.S. Papkov ◽  
I.I. Dubovik ◽  
...  
Keyword(s):  
Melt Copolymerization
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