Synthesis of multiblock thermoplastic elastomers based on biodegradable poly (lactic acid) and polycaprolactone

Zhang, Jinhui; Xu, Jia; Wang, Hongyan; Jin, Weiqun; Li, Junfeng

doi:10.1016/j.msec.2008.08.002

Cited by 58 publications

(42 citation statements)

References 25 publications

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“…The results for tensile strength and modulus of elasticity of PCL/PLA do not deviate far from the work done by other researcher [9]. As for Modulus of elasticity, this observation can attribute to the amount of PCL present.…”

Section: Meanwhile Insupporting

confidence: 50%

Characterization and Mechanical Analysis of PCL/PLA composites for FDM feedstock filament

Haq

Rahman

Ariffin

et al. 2017

IOP Conf. Ser.: Mater. Sci. Eng.

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Abstract. In this research, characterization, and the mechanical properties of Polycaprolactone (PCL) and Polylactic Acid (PLA) composites with the objective of determining their suitability as biomaterials for an alternative composites material for Fused Deposition Modelling (FDM) was investigated. The percentage of PLA is varies from 10% to 50% by weight. The PCL/PLA composites were prepared by melting and mixing using Brabender Plastograph machine. The characterization of PCL/PLA composites was characterized using Fourier Transform Infrared (FTIR). Meanwhile, the mechanical properties were evaluated are the Tensile, Flexural and Impact. It demonstrate that by the addition of PLA it improve the mechanical properties of PCL and leads to a better processability of PCL/PLA composites. With the decrement of PLA content in PCL/PLA composites the Tensile Strength the Young's Modulus and also the Impact Strength of the composites increased. The highest tensile strength was recorded at 10.00 Mpa and the Young's Modulus was recorded at 118.26 Mpa. The highest Impact Strength was recorded at 1.33 J. However, the Flexural Strength and Flexural Modulus increased when the content of PLA decrease and it slightly drop when the content of PLA is at the 40%. The highest Flexural Strength and Flexural Modulus were recorded at 7.59 Mpa and 35.33 Mpa respectively. Overall it can be concluded that the PCL70PLA30 composites are the best formulation and it gives a better mechanical properties result.

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Section: Meanwhile Insupporting

confidence: 50%

Characterization and Mechanical Analysis of PCL/PLA composites for FDM feedstock filament

Haq

Rahman

Ariffin

et al. 2017

IOP Conf. Ser.: Mater. Sci. Eng.

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“…Blending PLA with other polymers is one of the most practical and cost-effective approaches to overcome its low toughness and physical aging problem, although extensive studies have been worked on copolymerization with other monomers, chain extend as well as optimization of injection molding processing conditions (Harada et al, 2008;Takayama et al, 2011). PLA-b-PCL block copolymers have been investigated and are found to range from soft to elastic depending on the PCL content (Zhang et al, 2009). However, these copolymers are generally more expensive and more difficult to prepare than their homopolymer counterparts.…”

Section: Introductionmentioning

confidence: 99%

Mechanical and thermal properties of conventional and microcellular injection molded poly (lactic acid)/poly (ε-caprolactone) blends

Zhao

2016

Journal of the Mechanical Behavior of Biomedical Materials

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“…11 The coupling of oligomers with linker molecules, such as diisocyanates, results in the formation of multiblock copolymers (MBCs). [12][13][14] MBCs have the potential to overcome the aforementioned problems. Despite the easy synthetic procedure, the degradation products that originate from the linker molecules, such as hexamethylene diisocyanate, are potentially toxic.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and properties of Poly(L-lactide)-Poly(ɛ-caprolactone) multiblock copolymers by the self-polycondensation of diblock macromonomers

Jikei

Takeyama

Yamadoi

et al. 2015

Polym J

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Poly(L-lactide) (PLLA)-poly(ε-caprolactone) (PCL) multiblock copolymers (MBCs) were synthesized by the self-polycondensation of PLLA-PCL diblock copolymers. We synthesized three types of MBCs with degrees of polymerization of the lactide-caprolactone segments of 12-15 (MBC1), 24-26 (MBC2) and 49-50 (MBC3) to investigate the effect of the segment length on the properties. The strict control over the terminal functional groups of the diblock copolymers resulted in the formation of high-molecular weight MBCs (M w = (2.4-4.9) × 10 5 g mol − 1 ). Differential scanning calorimetry (DSC) measurements suggest the phase mixing of PLLA and PCL segments in amorphous region and that the MBCs contain PCL-rich regions, the extent of which is influenced by the segment length. The X-ray diffraction patterns of the MBCs contain diffraction peaks originating from lactide segment crystals. High moduli (95-43 MPa) and elongation at break (~500%) were observed for all the MBC films. The MBCs hydrolyzed slowly in comparison with PLLA, and the hydrophilic porous films of MBC2 were obtained. To estimate their potential as adhesion barrier films, the hydrophilic porous MBC films were implanted onto the abdominal side walls of rats. The MBC films effectively prevented the adhesion at the target site, but intermediate adhesion was observed at the suture site where the MBC film was fixed.

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Synthesis of multiblock thermoplastic elastomers based on biodegradable poly (lactic acid) and polycaprolactone

Cited by 58 publications

References 25 publications

Characterization and Mechanical Analysis of PCL/PLA composites for FDM feedstock filament

Characterization and Mechanical Analysis of PCL/PLA composites for FDM feedstock filament

Mechanical and thermal properties of conventional and microcellular injection molded poly (lactic acid)/poly (ε-caprolactone) blends

Synthesis and properties of Poly(L-lactide)-Poly(ɛ-caprolactone) multiblock copolymers by the self-polycondensation of diblock macromonomers

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