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 Poly(lactic Acid): A Versatile Biobased Polymer for the Future with Multifunctional Properties—From Monomer Synthesis, Polymerization Techniques and Molecular Weight Increase to PLA Applications

Polymers ◽  
2021 ◽  
Vol 13 (11) ◽  
pp. 1822
Author(s):  
Evangelia Balla ◽  
Vasileios Daniilidis ◽  
Georgia Karlioti ◽  
Theocharis Kalamas ◽  
Myrika Stefanidou ◽  
...  
Keyword(s):  
Molecular Weight ◽  
Lactic Acid ◽  
Chain Extension ◽  
Poly Lactic Acid ◽  
Plastic Pollution ◽  
Practical Applications ◽  
Decomposition Reactions ◽  
Melt Polycondensation ◽  
Polymerization Conditions ◽  
Molecular Weight Increase

Environmental problems, such as global warming and plastic pollution have forced researchers to investigate alternatives for conventional plastics. Poly(lactic acid) (PLA), one of the well-known eco-friendly biodegradables and biobased polyesters, has been studied extensively and is considered to be a promising substitute to petroleum-based polymers. This review gives an inclusive overview of the current research of lactic acid and lactide dimer techniques along with the production of PLA from its monomers. Melt polycondensation as well as ring opening polymerization techniques are discussed, and the effect of various catalysts and polymerization conditions is thoroughly presented. Reaction mechanisms are also reviewed. However, due to the competitive decomposition reactions, in the most cases low or medium molecular weight (MW) of PLA, not exceeding 20,000–50,000 g/mol, are prepared. For this reason, additional procedures such as solid state polycondensation (SSP) and chain extension (CE) reaching MW ranging from 80,000 up to 250,000 g/mol are extensively investigated here. Lastly, numerous practical applications of PLA in various fields of industry, technical challenges and limitations of PLA use as well as its future perspectives are also reported in this review.

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