The compatibilization of poly (propylene carbonate)/poly (lactic acid) blends in presence of core-shell starch nanoparticles

In this work, novel plasticizing biodegradable poly (lactic acid) (PLA) composites were prepared by melt blending of jute and tung oil anhydride (TOA), and the physical and mechanical properties of PLA/jute/TOA composites were tested and characterized. The impact strength of PLA/jute/TOA composites significantly increases with increasing the content of TOA. The SEM images of fracture surface of PLA/jute/TOA composites become rough after the incorporation of TOA. In addition, TOA changes the crystallization temperature and decomposition process of PLA/jute/TOA composites. With increasing the amount of TOA, the value of storage modulus (E′) of PLA/jute/TOA composites gradually increases. The complex viscosity (η*) values for all samples reduce obviously with increasing the frequency, which means that the pure PLA and PLA/jute/TOA composites is typical pseudoplastic fluid. This is attributed to the formation of crosslinking, which restricts the deformation of the composites.

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“…Overweight TOA will limit the movement of PLA molecular chain due to the TOA as the crosslinking agent. 31…”

Section: Resultsmentioning

confidence: 99%

The combined plasticization of jute and tung oil anhydride for jute fiber reinforced poly(lactic acid) composites

Zhou

Chen

Xie

et al. 2021

Polymers and Polymer Composites

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“…Recently, SNP-g-PMA was utilised as compatibiliser for blends of PPC and PLA. 194 The blends were formed via melt-blending and the compatibilisation was investigated via AFM, dynamic scanning microcalorimetry and rheology. Improved mechanical and thermal properties were obtained, e.g.…”

Section: Inclusion Of Polysaccharide Nps Into Polymer Structuresmentioning

confidence: 99%

Polysaccharide nanoparticles: from fabrication to applications

2021

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“…The FR-CSS particles was prepared in a two-step process based on the previous descriptions. [31][32][33][34] Briefly, the first step was the esterification reaction of native starch with acryloyl chloride and stearyl chloride, followed by graft copolymerization of esterified starch (ES, DS = 0.15 ± 0.03) with EA and HEMAP to create the core-shell particles (see Figure 1).…”

Section: Synthesis Of Fr-css Particlesmentioning

confidence: 99%

“…It is worth noting that the core is "locked in" by covalently bonding its shell, which prevents them from phase-separating and structure changing during melting blending. [31][32][33][34] In our previous study, 31 we developed a starch-based core-shell particle, which was demonstrated to be highly efficient in toughening PLA. Hence, if flame retardancy functionality can be implanted into these coreshell particles, then the incorporation of the resultant coreshell particles into PLA can be a solution to achieve concurrent improvements of toughness and flame retardancy.…”

Section: Introductionmentioning

confidence: 99%

Improving the toughness and flame retardancy of poly (lactic acid) with phosphorus‐containing core‐shell particles

Dong

Wang

et al. 2022

J of Applied Polymer Sci

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Despite polylactide (PLA) representing one of the most promising biodegradable materials, its applications lag far behind owing to the disadvantages of inherent brittleness and flammability, which is challengeable to simultaneously overcome.In this work, a phosphorus-containing core-shell starch nanoparticle (FR-CSS) was synthesized via soap-free emulsion polymerization for concurrent improvement of toughness and flame retardancy of PLA. The results revealed that with the incorporation of 10 wt% FR-CSS, the elongation at break of PLA/10FR-CSS was prominently improved to 308% while the tensile strength was about 40.0 MPa. Particularly, the toughness of PLA/FR-CSS was as high as 108.2 MJ/m 3 , which was 48 times higher than that of neat PLA. Besides, the PLA/10FR-CSS exhibited improved flame retardancy with a UL-94 V-2 rating and a LOI value of 24.5%. These results established an integrated design strategy of incorporating phosphorus-containing core-shell nanoparticles to prepare PLA composites combined excellent toughness with enhanced flame retardancy, therefore broadening the application gallery of PLAs.

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The compatibilization of poly (propylene carbonate)/poly (lactic acid) blends in presence of core-shell starch nanoparticles

Cited by 32 publications

References 32 publications

The combined plasticization of jute and tung oil anhydride for jute fiber reinforced poly(lactic acid) composites

The combined plasticization of jute and tung oil anhydride for jute fiber reinforced poly(lactic acid) composites

Polysaccharide nanoparticles: from fabrication to applications

Improving the toughness and flame retardancy of poly (lactic acid) with phosphorus‐containing core‐shell particles

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