Biobased blends of poly(propylene carbonate) and poly(hydroxybutyrate‐co‐hydroxyvalerate): Fabrication and characterization

Enriquez, Eugene; Mohanty, Amar K.; Misra, Manjusri

doi:10.1002/app.44420

Cited by 31 publications

(37 citation statements)

References 43 publications

(153 reference statements)

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“…The degrees of crystallinity, calculated with a ΔH m 0 value of 109 J/g for 100% crystalline PHBV, are extremely high. That may be due to an underestimated ΔH m 0 value considering the fact that other higher values are reported in literature (164 J/g [40], 146 J/g [41,42]). A slight decrease is observed when oLA is added to PHBV.…”

Section: Atomic Force Microscopy (Afm) Studiesmentioning

confidence: 80%

Combined compatibilization and plasticization effect of low molecular weight poly(lactic acid) in poly(lactic acid)/poly(3-hydroxybutyrate-co-3-hydroxyvalerate) blends

Amor¹,

Okhay²,

Guinault³

et al. 2018

Express Polym. Lett.

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Abstract. Improving overall properties of poly(lactic acid) (PLA) by blending it with another biobased polymer has been a strong field of research over the last years. In this study we demonstrate the synergetic effect of a small amount (between 0.1 and 1 wt%) of oligomer-like PLA (oLA) on the thermal, mechanical and gas barrier properties of the widely studied PLA-poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV) blends (90-10 wt%). Films of PLA/PHBV/oLA blends were prepared via single-screw extrusion. oLA being miscible with both PLA and PHBV, its compatibilizing effect was demonstrated by a decrease of the interfacial tension, a slight shift in the T g s of both polymers, and an increase in the elongation at break. It was also showed that oLA had a plasticizing effect on the PHBV dispersed phase, increasing its crystallinity rate. This resulted in a decrease in the permeability of the films while improving Young's modulus.

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Section: Atomic Force Microscopy (Afm) Studiesmentioning

confidence: 80%

Combined compatibilization and plasticization effect of low molecular weight poly(lactic acid) in poly(lactic acid)/poly(3-hydroxybutyrate-co-3-hydroxyvalerate) blends

Amor¹,

Okhay²,

Guinault³

et al. 2018

Express Polym. Lett.

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“…The tear resistance of the PPC films is lower than the PBAT but remains better than LDPE and PE/starch blends . However, the amorphous PPC has several limitations including poor thermal stability, high shrinkage, insufficient mechanical properties, low glass transition temperature (25–45 °C), and variability in the performance of the polymer depending on the type of catalyst used to prepare the PPC . Various attempts have been made to overcome the limitations of the PPC by blending PPC with different biodegradable polymers .…”

Section: Biodegradable Polymersmentioning

confidence: 99%

Biodegradable compatibilized polymer blends for packaging applications: A literature review

Muthuraj

Misra

Mohanty

2017

J of Applied Polymer Sci

Self Cite

307

183

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The majority of materials used for short-term and disposable packaging application are non-biodegradable which are not satisfying the demands in environmental safety and sustainability. Biodegradable polymers are an alternative for these nonbiodegradable materials. The biodegradable polymeric materials can degrade in a reasonable time period without causing environmental problems. However, biodegradable polymers possess some limitations such as comparatively high cost, insufficient mechanical performances, and inferior thermal stability to extend their widespread application in packaging industry. To overcome these limitations, one of the most commonly used strategies is melt blending of dissimilar biodegradable polymers. Unfortunately, most of the biodegradable polymer blends exhibit insufficient performance because they are thermodynamically immiscible as well as exhibit poor compatibility between the blended components. It has been established that the compatibilization is a well-known strategy to improve the performances of the immiscible biodegradable polymer blends by enhancing the adhesion between the phases. As a result, recent studies focus on various compatibilizers to enhance the performances of the resulting biodegradable polymer blends. This review summarizes the recent developments on a variety of biodegradable polymer blends compatibilized by melt processing with a main focus of ex situ and in situ compatibilization strategies.

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“…Poly(propylene carbonate) (PPC) is derived from carbon dioxide and is a biodegradable, transparent polymer which is generally used as a plasticizer in different polymers to enhance elastic properties due to its large elongation at break value [ 11 , 12 , 13 , 14 ] The addition of PPC into PECA matrix could improve processability, impact resistance, ductility and flexibility of the pristine cyanoacrylate. To best of our knowledge, incorporation of PPC into PECA polymer has not been demonstrated to date.…”

Section: Introductionmentioning

confidence: 99%

UV-Blocking, Transparent, and Antioxidant Polycyanoacrylate Films

2020

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Applications of cyanoacrylate monomers are generally limited to adhesives/glues (instant or superglues) and forensic sciences. They tend to polymerize rapidly into rigid structures when exposed to trace amounts of moisture. Transforming cyanoacrylate monomers into transparent polymeric films or coatings can open up several new applications, as they are biocompatible, biodegradable and have surgical uses. Like other acrylics, cyanoacrylate polymers are glassy and rigid. To circumvent this, we prepared transparent cyanoacrylate films by solvent casting from a readily biodegrade solvent, cyclopentanone. To improve the ductility of the films, poly(propylene carbonate) (PPC) biopolymer was used as an additive (maximum 5 wt.%) while maintaining transparency. Additionally, ductile films were functionalized with caffeic acid (maximum 2 wt.%), with no loss of transparency while establishing highly effective double functionality, i.e., antioxidant effect and effective UV-absorbing capability. Less than 25 mg antioxidant caffeic acid release per gram film was achieved within a 24-h period, conforming to food safety regulations. Within 2 h, films achieved 100% radical inhibition levels. Films displayed zero UVC (100–280 nm) and UVB (280–315 nm), and ~15% UVA (315–400 nm) radiation transmittance comparable to advanced sunscreen materials containing ZnO nanoparticles or quantum dots. Transparent films also exhibited promising water vapor and oxygen barrier properties, outperforming low-density polyethylene (LPDE) films. Several potential applications can be envisioned such as films for fatty food preservation, biofilms for sun screening, and biomedical films for free-radical inhibition.

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Biobased blends of poly(propylene carbonate) and poly(hydroxybutyrate‐co‐hydroxyvalerate): Fabrication and characterization

Cited by 31 publications

References 43 publications

Combined compatibilization and plasticization effect of low molecular weight poly(lactic acid) in poly(lactic acid)/poly(3-hydroxybutyrate-co-3-hydroxyvalerate) blends

Combined compatibilization and plasticization effect of low molecular weight poly(lactic acid) in poly(lactic acid)/poly(3-hydroxybutyrate-co-3-hydroxyvalerate) blends

Biodegradable compatibilized polymer blends for packaging applications: A literature review

UV-Blocking, Transparent, and Antioxidant Polycyanoacrylate Films

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