Synthesis, characterization and biodegradability of the biodegradable aliphatic–aromatic random copolyesters

Ki, Hosung; Park, O Ok

doi:10.1016/s0032-3861(00)00466-3

Cited by 161 publications

(87 citation statements)

References 20 publications

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“…Incorporation of other groups such as aromatic esters has also proven to provide the materials with a wider range of properties. In contrast, non-degradable aromatic polyesters, such as PET exhibit much better physical and mechanical properties [2]. Recently, incorporation of aliphatic units into aromatic polyesters has been employed in improving the degradability of PET [3][4][5][6][7][8], poly (propylene terephthalate) (PPT) [3][4][5][6][7][8][9][10], poly(butylene terephthalate) (PBT) [8,[11][12], and poly(1,2-propanediyl phthalate) (PPP) [13].…”

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confidence: 99%

Synthesis and characterizations of degradable aliphatic-aromatic copolyesters from lactic acid, dimethyl terephthalate and diol: Effects of diol type and monomer feed ratio

Namkajorn¹,

Petchsuk²,

Opaprakasit³

et al. 2010

Express Polym. Lett.

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confidence: 99%

Synthesis and characterizations of degradable aliphatic-aromatic copolyesters from lactic acid, dimethyl terephthalate and diol: Effects of diol type and monomer feed ratio

Namkajorn¹,

Petchsuk²,

Opaprakasit³

et al. 2010

Express Polym. Lett.

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“…In addition, high molecular weight PLA is proven as a biocompatible material with mechanical properties comparable to other commodity plastics, e.g., PE, PS and PP. In contrast, aromatic polyesters such as poly(ethylene terephthalate) (PET) have been reported as non-degradable materials [3]. Their physical properties, however, are much better than those of their aliphatic counterparts.…”

mentioning

confidence: 99%

Effects of synthesis conditions on chemical structures and physical properties of copolyesters from lactic acid, ethylene glycol and dimethyl terephthalate

Opaprakasit

Petchsuk²,

Opaprakasit³

et al. 2009

Express Polym. Lett.

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Lactic acid/ethylene terephthalate copolyesters were synthesized by the standard melt polycondensation of lactic acid (L), ethylene glycol (EG) and dimethyl-terephthalate (DMT). Effects of reaction temperatures and types of catalysts on the structures and properties of the copolymers were examined. In addition, feasibility of promoting the copolymerization process by a novel synthesis step of using thermo-stabilizers was investigated. The results show that a reaction temperature of higher than 180°C is necessary to produce copolymers with appreciable molecular weight. However, degradation was observed when the reaction temperature is higher than 220°C. Triphenyl phosphate (TPP) shows promising results as a potential thermo-stabilizer to minimize this problem. It was found that Sb2O3 and Tin(II) octoate are most effective among 4 types of catalysts employed in this study. 1H-NMR results indicate that copolymers have a random microstructure composed mainly of single L units alternately linked with ET blocks at various sequential lengths. The longer ET sequence in the chain structure leads to the increase in melting temperature of the copolymer. TGA results show that the resulting copolymers possessed greater thermal stability than commercially-available aliphatic PLA, as a result of the inclusion of T (terephthalate) units in the chain structure

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“…Aliphatic ester group degrades faster than the aromatic ester group, which is because of the higher content of flexible ester and lower bonding energy. [20,21] PTT/PBAT blends thermal degradation weight loss of 80-90% occurs at the first stage and 8-13% occurs at second stage. The PTT/PBAT blends T 50 exhibits between 410°C and 425°C at various compositions.…”

Section: Thermal Stability Of Ptt/pbat Blendsmentioning

confidence: 99%

Analysis and evaluation of biobased polyester of PTT/PBAT blend: thermal, dynamic mechanical, interfacial bonding, and morphological properties

Dhandapani

Nayak

Mohanty

2016

Polym. Adv. Technol.

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Novel blends were prepared from biobased poly(trimethylene terephthalate) (PTT) and poly(butylene adipate-coterephthalate) (PBAT) using a twin screw extrusion process as a function of different weight ratios. Thermal stability, mechanical, and interfacial properties of PTT/PBAT blends were investigated using a thermogravimetric analyzer and mechanical analyzer. Phase behavior and surface morphology of the blends were characterized using scanning electron microscopy. Interfacial bonding value of the PTT/PBAT blend was evaluated from the Pukanszky empirical relationship. Viscoelastic properties of PTT/PBAT blends were investigated using the dynamic mechanical analyzer. PTT/PBAT blend exhibited higher thermal stability than the neat PTT matrix. The entire blend showed better interfacial adhesion between the matrixes. Storage and loss modulus of the PTT/PBAT blend reduces with increasing PBAT content. PTT/PBAT blend exhibited higher impact energy than the neat PTT matrix, because of its flexible and amorphous nature of PBAT polymer and increasing toughness.

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Synthesis, characterization and biodegradability of the biodegradable aliphatic–aromatic random copolyesters

Cited by 161 publications

References 20 publications

Synthesis and characterizations of degradable aliphatic-aromatic copolyesters from lactic acid, dimethyl terephthalate and diol: Effects of diol type and monomer feed ratio

Synthesis and characterizations of degradable aliphatic-aromatic copolyesters from lactic acid, dimethyl terephthalate and diol: Effects of diol type and monomer feed ratio

Effects of synthesis conditions on chemical structures and physical properties of copolyesters from lactic acid, ethylene glycol and dimethyl terephthalate

Analysis and evaluation of biobased polyester of PTT/PBAT blend: thermal, dynamic mechanical, interfacial bonding, and morphological properties

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