Design, synthesis, and characterization of a potential flame retardant poly(lactic acid-co-pyrimidine-2,4,5,6-tetramine) via direct melt polycondensation

2013 ◽  
Vol 131 (10) ◽  
pp. n/a-n/a ◽  
Author(s):  
Jin-Feng Xiong ◽  
Qun-Fang Wang ◽  
Pai Peng ◽  
Jie Shi ◽  
Zhao-Yang Wang ◽  
...  
Keyword(s):  
Lactic Acid ◽  
Flame Retardant ◽  
Synthesis And Characterization ◽  
Poly Lactic Acid ◽  
Design Synthesis ◽  
Melt Polycondensation ◽  
Direct Melt Polycondensation

Performance Characterization of a Novel Flame Retardant Material Poly(lactic acid-co-melamine)

2013 ◽  
Vol 781-784 ◽  
pp. 479-482
Author(s):  
Jin Feng Xiong ◽  
Jing Pei Huo ◽  
Pai Peng ◽  
Zhao Yang Wang
Keyword(s):  
Lactic Acid ◽  
Flame Retardant ◽  
Char Yield ◽  
Poly Lactic Acid ◽  
Performance Characterization ◽  
Melt Polycondensation

Directly starting from D,L-lactic acid (LA) and melamine (MA), poly (lactic acid-co- melamine) [P(LA-co-MA)] as a kind of potential polymeric flame retardant is synthesized via melt polycondensation. The properties of P(LA-co-MA) s at different molar feed ratios are characterized by XRD, DSC and TGA. Most decomposition temperatures of P(LA-co-MA) s are higher than these of homopolymer poly (D,L-lactic acid) (PDLLA). For the char yield, all copolymers have higher char yield than PDLLA. Furthermore, the more MA in the feed content, the higher char yield.

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.

scholarly journals Synthesis and characterization of a novel flame retardant, poly(lactic acid-co-3,3′-diaminobenzidine)

2012 ◽  
Vol 16 (4) ◽  
pp. 389-397 ◽  
Author(s):  
Jin-Feng Xiong ◽  
Shi-He Luo ◽  
Qun-Fang Wang ◽  
Zhao-Yang Wang ◽  
Ji Qi
Keyword(s):  
Lactic Acid ◽  
Flame Retardant ◽  
Synthesis And Characterization ◽  
Poly Lactic Acid

scholarly journals Synthesis and Characterization of Polyphosphazenes Modified with Hydroxyethyl Methacrylate and Lactic Acid

2013 ◽  
Vol 2013 ◽  
pp. 1-7 ◽  
Author(s):  
Evelyn Carolina Martínez Ceballos ◽  
Ricardo Vera Graziano ◽  
Gonzalo Martínez Barrera ◽  
Oscar Olea Mejía
Keyword(s):  
Lactic Acid ◽  
Ring Opening ◽  
Room Temperature ◽  
Block Structure ◽  
Ring Opening Polymerization ◽  
Synthesis And Characterization ◽  
Poly Lactic Acid ◽  
Hydroxyethyl Methacrylate ◽  
H Nmr

Poly(dichlorophosphazene) was prepared by melt ring-opening polymerization of the hexachlorocyclotriphosphazene. Poly[bis(2-hydroxyethyl-methacrylate)-phosphazene] and poly[(2-hydroxyethyl-methacrylate)-graft-poly(lactic-acid)-phosphazene] were obtained by nucleophilic condensation reactions at different concentrations of the substituents. The properties of the synthesized copolymers were assessed by FTIR,1H-NMR and31P-NMR, thermal analysis (DSC-TGA), and electron microscopy (SEM). The copolymers have a block structure and show twoTg's below room temperature. They are stable up to a temperature of 100°C. The type of the substituents attached to the PZ backbone determines the morphology of the polymers.

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