Effect of exchange reactions and free radical grafting on the high‐speed reactive extrusion of poly(butylene succinate) and poly(propylene carbonate) blends

Calderón, Bárbara A.; Thompson, Conor W.; Barinelli, Vincenzo; McCaughey, Matthew S.; Sobkowicz, Margaret J.

doi:10.1002/pen.25197

Cited by 5 publications

(5 citation statements)

References 25 publications

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“…Moreover, this effect determines a compatibilization between the two phases with a corresponding reduction in the interfacial tension. In a further study, Calderon et al investigated the role of TBT (titanium butoxide) as a catalyst for the compatibilization of PBS/PPC blends, always in the presence of maleic anhydride activated with dicumyl peroxide [355] . The use of the catalyst made it possible to improve the dispersion between the two phases, reducing the interfacial tension between them.…”

Section: Blends Of Pbs With Poly(carbonate Alkenes) (Pac)mentioning

confidence: 99%

Poly(butylene succinate) (PBS): Materials, processing, and industrial applications

Barletta

Aversa

Ayyoob

et al. 2022

Progress in Polymer Science

179

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Section: Blends Of Pbs With Poly(carbonate Alkenes) (Pac)mentioning

confidence: 99%

Poly(butylene succinate) (PBS): Materials, processing, and industrial applications

Barletta

Aversa

Ayyoob

et al. 2022

Progress in Polymer Science

179

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“…Compatibilization is mostly achieved by reactive means. This strategy includes trans-reactions, reactive formation of copolymers, formation of ionically bonded structures, and the breaking and recombination of chains via mechanochemical blending [12][13][14]. In reactive processing, bonds are formed between dissimilar polymers during blending, and this helps in compatibilizing the immiscible phases of the blend and provides a stable morphology.…”

Section: Introductionmentioning

confidence: 99%

Recycling of Pretreated Polyolefin-Based Ocean-Bound Plastic Waste by Incorporating Clay and Rubber

et al. 2022

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Plastic waste found in oceans has become a major concern because of its impact on marine organisms and human health. There is significant global interest in recycling these materials, but their reclamation, sorting, cleaning, and reprocessing, along with the degradation that occurs in the natural environment, all make it difficult to achieve high quality recycled resins from ocean plastic waste. To mitigate these limitations, various additives including clay and rubber were explored. In this study, we compounded different types of ocean-bound (o-HDPE and o-PP) and virgin polymers (v-LDPE and v-PS) with various additives including a functionalized clay, styrene-multi-block-copolymer (SMB), and ethylene-propylene-based rubber (EPR). Physical observation showed that all blends containing PS were brittle due to the weak interfaces between the polyolefin regions and the PS domains within the polymer blend matrix. Blends containing clay showed rough surfaces and brittleness because of the non-uniform distribution of clay particles in the polymer matrix. To evaluate the properties and compatibility of the blends, characterizations using differential scanning calorimetry (DSC), scanning electron microscopy (SEM), and small-amplitude oscillatory shear (SAOS) rheology were carried out. The polymer blend (v-LDPE, o-HDPE, o-PP) containing EPR showed improved elasticity. Incorporating additives such as rubber could improve the mechanical properties of polymer blends for recycling purposes.

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“…The most extensively studied and produced P34HB binary blends are P34HB/polylactide (PLA), 18,19 P34HB/poly(ethylene glycol), 20 P34HB/poly(butylene succinate) (PBS), 21 P34HB/PHB, 22 P34HB/poly[(3-hydroxybutyrate)-co-(3-hydroxyvalerate)] (PHBV), 23,24 etc. Binary blends of PPC, such as PPC/PLA, 25,26 PPC/PHBV, 27 PPC/poly[(butylene adipate)-coterephthalate], 28 PPC/PHB, 29 PPC/PBS 30 and PPC/poly(butylene carbonate), 31 have been investigated intensively in industry and academia. However, unfortunately, there have been few investigations concerning the blends of biodegradable P34HB and sustainable PPC.…”

Section: Introductionmentioning

confidence: 99%

Miscibility, crystallization and mechanical properties of poly[(3‐hydroxybutyrate)‐co‐(4‐hydroxyvalerate)]/poly(propylene carbonate)/poly(vinyl acetate) ternary blends

Yao

Han

et al. 2021

Polymer International

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A ternary blend of poly [(3-hydroxybutyrate)-co-(4-hydroxyvalerate)] (P34HB), poly(propylene carbonate) (PPC) and poly(vinyl acetate) (PVAc) was initially melt-blended in an effort to obtain an excellent balance of mechanical performance. The effect of PVAc content on the miscibility, phase morphology, thermal behavior, isothermal melt crystallization and mechanical properties of P34HB/PPC/PVAc ternary blends was systematically investigated. Dynamic mechanical analysis indicated that P34HB and PPC were immiscible, and PVAc exhibited immiscibility with PPC. PVAc was selectively dispersed in the P34HB matrix and phase morphology was refined by reducing the interfacial tension. Moreover, the PVAc component suppressed the cold crystallization and reduced the isothermal melt crystallization rate of P34HB in the ternary blends. Unexpectedly, marked increases of 32.7% and 3025% were achieved in the tensile modulus and elongation of the ternary blend containing 20 wt% PVAc compared to neat P34HB. Meanwhile, the strength did not deteriorate. The unusual combination of high ductility, strength and modulus is of great potential for expanding the practical application of sustainable and biological polymers.

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Effect of exchange reactions and free radical grafting on the high‐speed reactive extrusion of poly(butylene succinate) and poly(propylene carbonate) blends

Abstract: This work studies two functionalization routes during high-speed reactive extrusion of biobased and biodegradable polymer blends: exchange reactions and free radical grafting with maleic anhydride.

Cited by 5 publications

References 25 publications

Poly(butylene succinate) (PBS): Materials, processing, and industrial applications

Poly(butylene succinate) (PBS): Materials, processing, and industrial applications

Recycling of Pretreated Polyolefin-Based Ocean-Bound Plastic Waste by Incorporating Clay and Rubber

Miscibility, crystallization and mechanical properties of poly[(3‐hydroxybutyrate)‐co‐(4‐hydroxyvalerate)]/poly(propylene carbonate)/poly(vinyl acetate) ternary blends

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