Study of mechanical and rheological properties, morphology, and miscibility in polylactid acid blends with thermoplastic polymers

Lekube, Blanca Maria; Burgstaller, Christoph

doi:10.1002/app.51662

Cited by 13 publications

(12 citation statements)

References 22 publications

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“…For the PP/polybutylene terephthalate (PBT) blend (70/30), about 10.0% EB of the blend was recorded as compared to 400% of pure PP [ 53 ]. The same results were observed in the majority of blends, such as LLDPE/PBS [ 15 ], LDPE/PLA [ 54 ] and PP/LDPE/PLA blends [ 55 ]. A ductile–brittle transition of the blends’ behaviour was used to explain this significant reduction.…”

Section: Resultssupporting

confidence: 70%

“…Heterogeneous structures were predicted from the binary blends, in which the particles of PBS dispersed in the LDPE matrix. These particles’ size provides information about the interactions between the blend components, in which bigger particles indicate poor interactions and smaller particles show better interactions [ 54 ]. Figure 5 shows images obtained from the sample surface after mechanical analysis.…”

Section: Resultsmentioning

confidence: 99%

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Blending of Low-Density Polyethylene and Poly(Butylene Succinate) (LDPE/PBS) with Polyethylene–Graft–Maleic Anhydride (PE–g–MA) as a Compatibilizer on the Phase Morphology, Mechanical and Thermal Properties

et al. 2023

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It is of significant concern that the buildup of non-biodegradable plastic waste in the environment may result in long-term issues with the environment, the economy and waste management. In this study, low-density polyethylene (LDPE) was compounded with different contents of poly(butylene succinate) (PBS) at 10–50 wt.%, to evaluate the potential of replacing commercial plastics with a biodegradable renewable polymer, PBS for packaging applications. The morphological, mechanical and thermal properties of the LDPE/PBS blends were examined in relation to the effect of polyethylene–graft–maleic anhydride (PE–g–MA) as a compatibilizer. LDPE/PBS/PE–g–MA blends were fabricated via the melt blending method using an internal mixer and then were compression molded into test samples. The presence of LDPE, PBS and PE–g–MA individually in the matrix for each blend presented physical interaction between the constituents, as shown by Fourier-transform infrared spectroscopy (FTIR). The morphology of LDPE/PBS/PE–g–MA blends showed improved compatibility and homogeneity between the LDPE matrix and PBS phase. Compatibilized LDPE/PBS blends showed an improvement in the tensile strength, with 5 phr of compatibilizer providing the optimal content. The thermal stability of LDPE/PBS blends decreased with higher PBS content and the thermal stability of compatibilized blends was higher in contrast to the uncompatibilized blends. Therefore, our research demonstrated that the partial substitution of LDPE with a biodegradable PBS and the incorporation of the PE–g–MA compatibilizer could develop an innovative blend with improved structural, mechanical and thermal properties.

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Section: Resultssupporting

confidence: 70%

Section: Resultsmentioning

confidence: 99%

Blending of Low-Density Polyethylene and Poly(Butylene Succinate) (LDPE/PBS) with Polyethylene–Graft–Maleic Anhydride (PE–g–MA) as a Compatibilizer on the Phase Morphology, Mechanical and Thermal Properties

et al. 2023

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“…For composites with UV‐P, the crystallization and melting temperature were in the absence of regular variation, but the crystallinity of PP phase continues to decrease. It could be seen from Figure 9C that with the addition of UV‐P, the glass transition temperature of PC phase tended to shift towards low temperature, indicating a possible improvement in compatibility 51 . Since UV‐P is a small molecule with good compatibility with polymer materials, it could help to enhance the interaction between PP matrix and PC dispersed phase.…”

Section: Resultsmentioning

confidence: 99%

“…It could be seen from Figure 9C that with the addition of UV-P, the glass transition temperature of PC phase tended to shift towards low temperature, indicating a possible improvement in compatibility. 51 Since UV-P is a small molecule with good compatibility with polymer materials, it could help to enhance the interaction between PP matrix and PC dispersed phase. Accordingly, the mobility of PP molecular chain was reduced, resulting in a decrease in the crystallinity of the matrix.…”

Section: Dsc Analysismentioning

confidence: 99%

Preparation of PP/PC light‐diffusing materials with UV‐shielding property

Zhu

Wang

et al. 2023

Polymer Composites

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In this study, we presented a one‐step melt‐blending method to fabricate polypropylene (PP)/polycarbonate (PC) light‐diffusing materials. A promising balance between haze and transmittance was obtained by the addition of small amount of PC to the matrix. On the basis of Mie scattering theory and morphology analysis, the correlation between processing conditions and light‐diffusing properties was built. Low rotor speed and high viscosity ratio were beneficial to optical properties of PP/PC composites. To extend the advanced application, two general anti‐ultraviolet additives nanoscale titanium dioxide (Nano‐TiO2) and 2‐(2‐hydroxy‐5‐methylphenyl) benzotriazole (UV‐P) were added to impart UV‐shielding property to the composites. Their specific influences on the morphology and comprehensive properties of PP/PC composites were studied. It was found that the introduction of Rayleigh scattering raised by Nano‐TiO2 could strengthen the scattering effect and cause a significant reduction in light transmittance, while UV‐P had little effect on the optical properties of the light‐diffusing composites. In summary, this study prepared the PP/PC composites with high‐performance light scattering and UV‐shielding properties applying a facile blending method, which showed a potential application in flexible lightings and LCD displays.

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“…In recent years, the growing demand for new polymeric materials has encouraged industries and the academic community to develop improved processing techniques, especially those that allow the combination of properties not usually found in a single polymeric material. [1][2][3] Developing multiphase polymeric systems is commercially important because it allows the combination of properties of different materials or the improvement of the deficiencies of others. 4,5 Polymer blends have gained considerable prominence in the plastics industry.…”

Section: Introductionmentioning

confidence: 99%

Tailoring polyamide 6 to exhibit super‐tough behavior and high thermomechanical stability: The role of AES and EPDM‐MA hybridization

Silva

Luna

Filho

et al. 2023

J of Applied Polymer Sci

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High‐performance blends based on polyamide 6 (PA6) were prepared using a hybrid mixture of acrylonitrile/EPDM/styrene (AES) and maleic anhydride grafted ethylene–propylene–diene (EPDM‐MA). Samples were processed in a twin‐screw extruder and injection molded. The torque curves of the PA6/AES/EPDM‐MA blends shifted to higher torque values with added EPDM‐MA, suggesting a chemical interaction between the components. The melt flow index (MFI) results for the PA6/AES/EPDM‐MA blends confirmed the intensification of the flow resistance. Intense infrared absorption peaks for NH and CO indicated that the amine groups of PA6 reacted with the maleic anhydride in EPDM‐MA. The 60/25/15 wt% PA6/AES/EPDM‐MA blend showed an impact strength over 800 J/m, heat deflection temperature (HDT) of 62.3°C, elongation at break of 115%, and contact angle of 59.1°, corresponding to increases of 1718%, 10.5%, 297%, and 10%, respectively, compared to neat PA6. When examined by scanning electron microscopy, the morphology showed a fracture surface with a high degree of plastic deformation and the formation of elastic microfibrils, contributing to the super toughening of the PA6/AES/EPDM‐MA (15%) system. These results indicate the technological potential of the PA6/AES/EPDM‐MA (15 wt%) blends for application in industrial sectors that require super‐tough plastics.

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Study of mechanical and rheological properties, morphology, and miscibility in polylactid acid blends with thermoplastic polymers

Cited by 13 publications

References 22 publications

Blending of Low-Density Polyethylene and Poly(Butylene Succinate) (LDPE/PBS) with Polyethylene–Graft–Maleic Anhydride (PE–g–MA) as a Compatibilizer on the Phase Morphology, Mechanical and Thermal Properties

Blending of Low-Density Polyethylene and Poly(Butylene Succinate) (LDPE/PBS) with Polyethylene–Graft–Maleic Anhydride (PE–g–MA) as a Compatibilizer on the Phase Morphology, Mechanical and Thermal Properties

Preparation of PP/PC light‐diffusing materials with UV‐shielding property

Tailoring polyamide 6 to exhibit super‐tough behavior and high thermomechanical stability: The role of AES and EPDM‐MA hybridization

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