Study of Flexible Films Prepared from PLA/PBAT Blend and PLA E-Beam Irradiated as Compatibilizing Agent

Cardoso, Elizabeth C.L.; Oliveira, René R.; Machado, Glauson Aparecido F.; Moura, Esperidiana A. B.

doi:10.1007/978-3-319-51382-9_14

Cited by 7 publications

(6 citation statements)

References 12 publications

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“…However, the high brittle and low toughness properties have limited its applications. With the advancement in additive manufacturing processes and polymer blending technologies, these mechanical properties will be enhanced to increase its applicability [12].…”

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confidence: 99%

The influence of stiffener geometry on flexural properties of 3D printed polylactic acid (PLA) beams

et al. 2020

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We used finite element analyses (FEA) on Abaqus to study flexural properties of additive manufactured beams using polylactic acid (PLA) polymer. Experimental stress–strain data from flexural testing are used to define elastic–plastic properties of the material in the computation software. The flexural experiments are used to validate the FEA approach suggested. The method provides good results of deflection and stress with errors well below 10% in most of the cases. Therefore, by using the proposed approach, costs related to repeated experimental works can be avoided. In addition, the flexural rigidities of the additive manufactured beams are studied. Five different beam stiffener designs (diamond, honeycomb, square, triangular and wiggle) are studied based on beam bending theory. The force–deflection data from the flexural tests are used to determine the area moments of inertia of the beams. The honeycomb stiffener showed the highest force–deflection behaviour that led to the highest calculated area moment of inertia. However, with the lowest force–deflection behaviour, the square stiffener had the lowest calculated area moment of inertia.

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confidence: 99%

The influence of stiffener geometry on flexural properties of 3D printed polylactic acid (PLA) beams

et al. 2020

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“…However, the impact strength and heat resistance of PLA are poor. At present, researches have mostly mixed poly \(adipic acid)/butyl terephthalate (PBAT) with PLA, and modified PLA with PBAT's high toughness and good heat resistance to improve the application range of PLA composites (Cardoso et al 2017). Crop straw is agricultural waste that is available in large quantities, low in price, and renewable.…”

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confidence: 99%

Performance comparison of four kinds of straw/PLA/PBAT wood plastic composites

Feng

Zhang

Wang

et al. 2020

BioRes

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Utilizing four kinds of straw fibers (sorghum, rice, corn, and soybean) as filling fibers, polylactic acid (PLA) and poly (adipic acid)/polybutylene terephthalate (PBAT) in a mixture (7:3) were used as matrix to prepare composite materials by a hot pressing molding process. The mechanical properties, and thermal stability of the four fiber-filled composites were evaluated. The composites had high interfacial quality and no obvious voids. The soybean straw/PLA/PBAT composite had the best interfacial quality. PLA/PBAT-based composite materials were examined. The experimental results show that the soybean straw/PLA/PBAT composite had the best tensile strength, bending strength, and impact strength (14.3 MPa, 19.5 MPa and 3.23 KJ·m-2, respectively), which was 25.3%, 14.6%, and 27.8% higher than that of the corn straw/PLA/PBAT composite. The thermal stability of the corn straw/PLA/PBAT composite was the best, with an initial decomposition temperature of 286 °C, and the residual amount was 7.3%.

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“…Although desirable combination of properties can be obtained by a simple and cost-effective blending of two or more polymers, the physical blends are phaseseparated systems and additional compatibilizer is required to enhance interfacial adhesion and compatibility between individual phases [17]. Some efforts were also made to improve the compatibility between PBAT and PLA [18][19][20]. An alternative approach to combine aromatic polyesters with aliphatic ones is the modification by either copolymerization or reactive blending.…”

Section: Introductionmentioning

confidence: 99%

Poly(butylene terephthalate)/polylactic acid based copolyesters and blends: miscibility-structure-property relationship

Irska¹,

Paszkiewicz²,

Gorący³

et al. 2020

Express Polym. Lett.

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A series of aliphatic-aromatic copolyesters based on poly(butylene terephthalate) (PBT) and poly(lactic acid) (PLA) have been synthesized by means of a novel reactive blending procedure coupled with polycondensation in melt. The obtained copolymers were further compared with PBT and PLA homopolymers and PBT/PLA non-compatibilized physical blends in order to investigate the effect of transesterification reactions on the structural, morphological, thermal and mechanical performance. Properties of the obtained materials have been found strictly dependent on the preparation process and blend/copolymer composition. The PBT/PLA physical blends appeared as highly crystalline, phase separated systems that exhibit brittle behavior. On the other hand, the applied method of reactive blending enhanced interfacial adhesion and promoted the arrangement of PBT and PLA in blocks of different lengths. Although the PBT-b-PLA copolyesters were found to be miscible in amorphous phase, the phase separation that has arisen from PBT crystalline domains occurs. Along with an increase in PLA weight fraction in copolymers, the length of aromatic sequences decreased which in turn resulted in shifting the values of melting temperatures (T m) toward lower ones and decreased the degree of crystallinity (x c). Moreover, PBT-b-PLA copolymer with 30 wt% of PLA units has been demonstrated as a promising thermoplastic shape memory polymer (SMP) with a switching temperature of 35°C.

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Study of Flexible Films Prepared from PLA/PBAT Blend and PLA E-Beam Irradiated as Compatibilizing Agent

Cited by 7 publications

References 12 publications

The influence of stiffener geometry on flexural properties of 3D printed polylactic acid (PLA) beams

The influence of stiffener geometry on flexural properties of 3D printed polylactic acid (PLA) beams

Performance comparison of four kinds of straw/PLA/PBAT wood plastic composites

Poly(butylene terephthalate)/polylactic acid based copolyesters and blends: miscibility-structure-property relationship

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