7 Polyester-based biodegradable polymers for commodities

Ruiz‐Rubio, Leire; Sánchez-Bodón, Julia; Moreno, Isabel; Pérez‐Álvarez, Leyre; Vilas-Vilela, José Luis

doi:10.1515/9783110590586-007

Cited by 2 publications

(3 citation statements)

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“…In addition, it is important to notice the reduction of the SD for the halogenated patterns. It seems that the presence of polar groups in the structure favors the formation of more homogenous droplet in the breath figure process, similarly to what it was described for poly(x‐chlorostyrene) 70 . However, for the poly(x‐chlorostyrene), even if the pore size decreases with respect to polystyrene, the homogeneity of the samples was worse.…”

Section: Resultssupporting

confidence: 72%

“…In this section, the influence of di‐functionalization of PVK in 3,6 positions on the patterned film formation was analyzed. Considering the effect of chlorine substitutions of polystyrene reported in a previous study for Ruiz‐Rubio et al 70 in which the structure of the arrays varies with the substitution, in this study two different halogen substitutions have been evaluated.…”

Section: Resultsmentioning

confidence: 99%

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Study of the capacity of poly(N‐vinylcarbazole) derivatives to form honeycomb‐like patterns

Bekkar

Bettahar

Méghabar

et al. 2021

J of Applied Polymer Sci

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Poly(N‐vinylcarbazole), two dihalogenated derivatives, and nanocellulose/poly(N‐vinylcarbazole) nanocomposite thin films have been fabricated with micrometric pore topography. This patterned structure has been developed by using breath figure method, which is an easy and cost‐effective method to obtain honeycomb‐like arrays. In addition, the effect of the dihalogenated substitutions and the presence of nanocellulose fillers in the topography and conformational entropy were evaluated. The conformational entropy of each sample was calculated by using Voronoi tessellation. It is important to notice that highly regular patterns have been obtained from this photoconductive polymer, since the conductivity of this kind of material is proportional to the absorbed light, this honeycomb‐like topography could improve the light capture and the efficiency of photoelectric conversion, increasing the potential applicability of these materials.

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Section: Resultssupporting

confidence: 72%

Section: Resultsmentioning

confidence: 99%

Study of the capacity of poly(N‐vinylcarbazole) derivatives to form honeycomb‐like patterns

Bekkar

Bettahar

Méghabar

et al. 2021

J of Applied Polymer Sci

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“…These green polymers, which range from small molecules to polymer materials to biomass, under appropriate active conditions after their intended use, represent one possible end-of-life solution. , As concerns about the environmental and biosafety impact of used polymers increase, there is sustained interest in the lifecycle of polymeric materials. A series of aliphatic polyesters, including poly(lactic acid) (PLA), − poly(glycolic acid), − poly(caprolactone), and polyhydroxybutyrate, − have been successfully developed as sustainable and degradable polymers. The introduction of an aromatic ring pendant into the backbone through the ring-opening polymerization (ROP) of mandelide , has produced a polyester as an alternative to nondegradable polystyrene.…”

Section: Introductionmentioning

confidence: 99%

Facile Synthesis of Aromatic Polyesters with High Molecular Weights via Lewis Pair-Mediated Ring-Opening Polymerization of Salicylic Acid-Derived O-Carboxyanhydrides

Liang,

Meng,

Yang

2023

Macromolecules

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Compared to fossil resources, which display limited degradability, exploring novel green polyesters as more sustainable alternatives is an extremely challenging task. In this study, we have developed an effective pathway from natural origin salicylic acid (SA) to poly(salicylic acid) (PSA) with high molecular weight. This was achieved by employing Lewis pair-mediated ring-opening polymerization of salicylic acid O-carboxyanhydrides (SAOCA). We identified two metal-free combinations, namely, 1,3-bis(2,6-diisopropylphenyl)imidazole (NHC-1)/N-[3,5-bis(trifluoromethyl)phenyl]-N′-cyclohexyl thiourea (TU-1) and 2-tertbutylimino-2-diethylamino-1,3-dimethyl-perhydro-1,3,2 diazaphosphorine (BEMP)/TU-1, that mediated ROP of SAOCA at room temperature within 100 min and successfully produced PSA with molecular weight greater than 150 kDa. We observed that the phase state of the polymerization solution switched from clarification to turbidity to phase separation when the PSA chain was growing up. Based on the NMR results of the interaction between organic base and TU-1, the analysis of polymerization kinetics, and DFT calculations, we found that the excess addition of TU-1 could effectively restrain unfavorable results in which very fast propagation of the polymerization chain caused phase separation in a short time. Furthermore, it improved the controllability of ROP reactions and the resulting chain length of PSA. The generality of this synthetic strategy was evaluated by the convenient preparation of other PSA-series polyesters via the ROP of SAOCA analogues varying the substituents. The obtained PSA-series polyesters exhibited good thermal stability and high glass transition temperature, outperforming some commodity polyolefins. This synthetic method paves the way for a better understanding of PSA-based polyesters as a class of future green materials applicable in the field of biomedicine and sustainable plastic packaging.

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7 Polyester-based biodegradable polymers for commodities

Cited by 2 publications

References 0 publications

Study of the capacity of poly(N‐vinylcarbazole) derivatives to form honeycomb‐like patterns

Study of the capacity of poly(N‐vinylcarbazole) derivatives to form honeycomb‐like patterns

Facile Synthesis of Aromatic Polyesters with High Molecular Weights via Lewis Pair-Mediated Ring-Opening Polymerization of Salicylic Acid-Derived O-Carboxyanhydrides

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