Hyperbranched polyesters by polycondensation of fatty acid-based AB<sub>n</sub>-type monomers

Testud, Blandine; Pintori, Didier; Grau, Étienne; Taton, Daniel; Cramail, Henri

doi:10.1039/c6gc02294d

Cited by 44 publications

(33 citation statements)

References 55 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The increase of the polycondensation time allowed enhancement of the molecular weight of estolides up to

\bar{M_{w}}

values of 62.6 kg mol −1 (Table ; Figure S10, Supporting Information). However, dispersity increased dramatically (Đ > 4) indicating the occurrence of side reactions such as etherification …”

Section: Resultsmentioning

confidence: 99%

Cross‐Linking of Polyesters Based on Fatty Acids

Dworakowska

Coz

Chollet

et al. 2019

Euro J Lipid Sci & Tech

Self Cite

View full text Add to dashboard Cite

This study aims at obtaining cross‐linked polymeric materials of biomass origin. For this purpose, one‐pot polyesterification of methyl ricinoleate and methyl 12‐hydroxystearate using titanium isopropoxide as a catalyst is performed leading to polyesters known as estolides. The obtained estolides are successfully cross‐linked using dicumyl peroxide or a sulfur vulcanization system. The so‐formed bio‐based elastomers appear to exhibit promising properties. The latter are analyzed by mechanical tensile tests and thermal techniques (TGA, DSC, DMA) and show high thermal stability (T5% = 205–318 °C), tailored physico‐mechanical properties (low glass transition temperature in the range from −69 to −54 °C), and good tensile strength (0.11–0.40 MPa). Networks prepared from high molecular weight estolides appear to be promising bio‐based elastomers. Practical Applications: The vegetable oil‐based estolides described in this contribution are new fully bio‐based precursors for further elastomers synthesis. The resulting estolide networks (obtained by peroxide or sulfur cross‐linking) exhibit tailored thermo‐mechanical properties.

show abstract

“…The increase of the polycondensation time allowed enhancement of the molecular weight of estolides up to

\bar{M_{w}}

values of 62.6 kg mol −1 (Table ; Figure S10, Supporting Information). However, dispersity increased dramatically (Đ > 4) indicating the occurrence of side reactions such as etherification …”

Section: Resultsmentioning

confidence: 99%

Cross‐Linking of Polyesters Based on Fatty Acids

Dworakowska

Coz

Chollet

et al. 2019

Euro J Lipid Sci & Tech

Self Cite

View full text Add to dashboard Cite

show abstract

“…For these reasons HBP have replaced dendrimers in many applications, and are now commonly used in various fields of application, including therapeutics, drug delivery, coatings, and as rheological or curing agents [3,4,5,6]. Recently, interest in the synthesis of the bio-based hyperbranched polymers has quickly grown as the logical consequence of the success of green chemistry in the polymer field [7,8,9,10,11,12,13,14]. However, to our knowledge, synthesis from lignin degradation products feedstock has yet to be reported.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of Lignin-based Phenol Terminated Hyperbranched Polymer

2019

View full text Add to dashboard Cite

In this work, we proved the efficient synthesis of a bio-based hyper-branched polyphenol from a modified lignin degradation fragment. Protocatechuic acid was readily obtained from vanillin, a lignin degradation product, via alkaline conditions, and further polymerised to yield high molecular weight hyperbranched phenol terminated polyesters. Vanillic acid was also subjected to similar polymerisation conditions in order to compare polymerisation kinetics and differences between linear and hyperbranched polymers. Overall, protocatechuic acid was faster to polymerise and more thermostable with a degradation temperature well above linear vanillic acid polyester. Both polymers exhibited important radical scavenging activity (RSA) compared to commercial antioxidant and present tremendous potential for antioxidant applications.

show abstract

“…There are two common methods for the preparation of HBPET. One is self‐polycondensation of AB x ‐type ( x ≥ 2) monomer, and the other is polycondensation of A m ‐type monomer and B n ‐type monomer ( m ≥ 2 and n > 2) . Normally, a conventional hyperbranched polymer (CHP), characterized with short repeat unit length, has a compact branching architecture with peripheral functional groups.…”

Section: Introductionmentioning

confidence: 99%

“…One is self-polycondensation of AB x -type (x ≥ 2) monomer, and the other is polycondensation of A m -type monomer and B n -type monomer (m ≥ 2 and n > 2). 14 Normally, a conventional hyperbranched polymer (CHP), characterized with short repeat unit length, has a compact branching architecture with peripheral functional groups. In contrast, a kind of segmented hyperbranched polymer (SHP) with long linear segments possesses a sparsely branched framework.…”

Section: Introductionmentioning

confidence: 99%

Effect of hyperbranched poly(citric polyethylene glycol) with various polyethylene glycol chain lengths on starch plasticization and retrogradation

Zhang

Wang

Zhang

et al. 2019

Polymer International

View full text Add to dashboard Cite

A series of hyperbranched poly(citric polyethylene glycol) (PCPEG) materials with varied polyethylene glycol (PEG) chain lengths as plasticizers were mixed with maize starch (MS) via cooking and film‐forming. The structure, pasting property, plasticization, aging property, moisture absorption and compatibility of plasticized starches were studied by means of Fourier transform infrared spectroscopy, X‐ray diffraction, rapid viscosity analysis, tension testing, moisture absorption measurements and scanning electron microscopy. Compared with PEG and citric acid, PCPEG was more effective in promoting starch chain movement and inhibiting the retrogradation of starch film. Also, PCPEG/MS had smaller moisture content. The longer the plasticizer chain, the better were the aging resistance and moisture resistance of starch. But with an increase of PEG chain length, mechanical properties of PCPEG/MS deteriorated and the compatibility between PCPEG and MS decreased. The hyperbranched derivative of PEG with longer chain exhibited improved plasticization and compatibility with starch. © 2019 Society of Chemical Industry

show abstract

Hyperbranched polyesters by polycondensation of fatty acid-based AB_n-type monomers

Abstract: Widely available vegetable oils were readily derivatized into chemically pure ABn-type monomers (n = 2 or 3).

Cited by 44 publications

References 55 publications

Cross‐Linking of Polyesters Based on Fatty Acids

Cross‐Linking of Polyesters Based on Fatty Acids

Synthesis of Lignin-based Phenol Terminated Hyperbranched Polymer

Effect of hyperbranched poly(citric polyethylene glycol) with various polyethylene glycol chain lengths on starch plasticization and retrogradation

Contact Info

Product

Resources

About

Hyperbranched polyesters by polycondensation of fatty acid-based ABn-type monomers

Abstract: Widely available vegetable oils were readily derivatized into chemically pure ABn-type monomers (n = 2 or 3).

Cited by 44 publications

References 55 publications

Cross‐Linking of Polyesters Based on Fatty Acids

Cross‐Linking of Polyesters Based on Fatty Acids

Synthesis of Lignin-based Phenol Terminated Hyperbranched Polymer

Effect of hyperbranched poly(citric polyethylene glycol) with various polyethylene glycol chain lengths on starch plasticization and retrogradation

Contact Info

Product

Resources

About

Hyperbranched polyesters by polycondensation of fatty acid-based AB_n-type monomers