Crystallization and melting behavior of biodegradable poly(ethylene succinate‐<i>co</i>‐6 mol % butylene succinate)

Yang, Yan; Qiu, Zhaobin

doi:10.1002/app.33881

Cited by 23 publications

(25 citation statements)

References 37 publications

(48 reference statements)

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“…Moreover, it is difficult to control the degradation performance of pure PES . Blending with other biodegradable polymers and introduction of inorganic fillers are two effective ways to improve the properties of PES . Lu et al investigated the crystallization and mechanical properties of PES/poly( l ‐lactide) (PES/PLLA) blends.…”

Section: Introductionmentioning

confidence: 99%

Graphene‐reinforced biodegradable poly(ethylene succinate) nanocomposites prepared by in situ polymerization

Zhao

Wang

Zhou

et al. 2013

J of Applied Polymer Sci

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In this study, poly(ethylene succinate)(PES)/graphene nanocomposites were facilely prepared by in situ melt polycondensation of succinic acid and ethylene glycol in which contained well dispersed graphene oxide (GO). Fourier transform infrared (FTIR), GPC, TGA, and XRD were used to characterize the composites. The FTIR spectra and TGA measurement confirmed that PES chains had been successfully grafted onto GO sheets along with the thermal reduction of GO to graphene during the polymerization. GPC results indicated that increasing amounts of graphene caused a slight decrease in number average molecular weight of PES matrix when polymerization time was kept constant. The content of grafted PES chains on graphene sheets was also determined by TGA and was to be about 60%, which made the graphene sheets homogeneously dispersed in the PES matrix, as demonstrated by SEM and XRD investigations. Furthermore, the incorporation of thermally reduced graphene improved the thermal stability and mechanical properties of the composites significantly. With the addition of 0.5 wt % graphene, onset decomposition temperature of the composite was increased by 12 C, and a 45% improvement in tensile strength and 60% in elongation at break were also achieved. The enhanced performance of the composites is mainly attributed to the uniform dispersion of graphene in the polymer matrix and the improved interfacial interactions between both components.

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Section: Introductionmentioning

confidence: 99%

Graphene‐reinforced biodegradable poly(ethylene succinate) nanocomposites prepared by in situ polymerization

Zhao

Wang

Zhou

et al. 2013

J of Applied Polymer Sci

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“…PES (M w = 4.2 × 10 4 g/mol) was prepared in our lab. 17,18 The graphite sample used in this study was obtained from the laboratory of Prof. Zhongzhen Yu of the Beijing University of Chemical Technology.Preparation of TRG and PES/TRG Nanocomposites. GO was prepared by using a modified method proposed by Staudenmaier.…”

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confidence: 99%

Influence of Thermally Reduced Graphene Low-Loadings on the Crystallization Behavior and Morphology of Biodegradable Poly(ethylene succinate)

Jing

Qiu

2013

Ind. Eng. Chem. Res.

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Through a solution and coagulation method, biodegradable poly(ethylene succinate) (PES) and thermally reduced graphene (TRG) nanocomposites were prepared at low TRG loadings. The nonisothermal melt crystallization peak temperature values and overall isothermal melt crystallization rates are greater in the nanocomposites than in neat PES, indicative of a nucleating agent effect of TRG; however, the crystallization mechanism of PES remains unchanged in the nanocomposites, regardless of TRG loading and crystallization temperature. The nonisothermal and melt crystallization processes of the nanocomposites are found to vary with the TRG loading, exhibiting a maximum at 0.25 wt % TRG loading. The incorporation of a small amount of TRG shows little influence on the spherulitic growth rates but obviously affects the spherulites nucleation density values of the nanocomposites. TRG does not modify the crystal structure of PES in the nanocomposites. ■ INTRODUCTIONIn the last two decades, some biodegradable aliphatic polyesters have attracted considerable research interests from both academic and industrial viewpoints, including poly(3-hydroxybutyrate) (PHB), poly(L-lactide) (PLLA), poly(ε-caprolactone) (PCL), and poly(butylene succinate) (PBS). 1−4 Similar to PBS, poly(ethylene succinate) (PES) is also a kind of biodegradable aliphatic polyester. PES has a chemical structure of (OCH 2 CH 2 O 2 CCH 2 CH 2 CO) n , which is similar to that of PBS. The chemical structures of PBS and PES are only different in their numbers of methylene groups between the two ether groups, namely four for the former and two for the latter, respectively. Till now, the crystal structure, crystallization kinetics, multiple melting behavior, spherulitic morphology, and enzymatic degradation of PES have been studied extensively. 5−14 To extend a wider practical application, some methods have been used for the development of PES-based multicomponent materials, including copolymerization, polymer blending, and the fabrication of polymer nanocomposites. 15−26 As the physical properties of host polymer can be improved obviously by a small amount of nanofillers, the fabrication of polymer nanocomposites has recently found more applications to develop PES-based multicomponent materials. 23−26 As a novel two-dimensional material, graphene shows many excellent physical properties. 27 Thermally reduced graphene (TRG) is produced through the exfoliation and reduction process of graphite oxide (GO). 28−30 Similar to other nanofillers, graphene can also improve significantly the physical properties of host polymers even at very low loading. 28−30 Till now, graphene or graphene oxide has been used for the fabrication of polymer nanocomposites for several kinds of biodegradable polymers, including PLLA, PHB, and PCL; moreover, the degree of dispersion or aggregation of graphene or graphene oxide, crystallization kinetics, and many other physical properties of these novel polymer nanocomposites have been investigated in detail. 31−37 In this research note, we ...

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“…16 It has a chemical structure similar to that of PES but possesses more methylene units than PES. Unlike the extensively investigated PES, [5][6][7][8]13,[17][18][19][20][21][22][23][24][25][26][27][28][29] only a few works have focused on PESub. [30][31][32][33][34][35][36] Turner-Joners and Bunn studied the crystal structure of PESub in 1962 and determined it to be a monoclinic unit cell with dimensions of a 5 5.51 Å , b 5 7.25 Å , c (fiber axis) 5 14.28 Å , and b 5 114.30 0 .…”

Section: Introductionmentioning

confidence: 99%

Crystallization kinetics and morphology of poly(ethylene suberate)

Qiu

2015

J of Applied Polymer Sci

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The crystallization kinetics and morphology of poly(ethylene suberate) (PESub) were studied in detail with differential scanning calorimetry, polarized optical microscopy, and wide‐angle X‐ray diffraction. The Avrami equation could describe the overall isothermal melt crystallization kinetics of PESub at different crystallization temperatures; moreover, the overall crystallization rate of PESub decreased with increasing crystallization temperature. The equilibrium melting point of PESub was determined to be 70.8°C. Ring‐banded spherulites and a crystallization regime II to III transition were found for PESub. The Tobin equation could describe the nonisothermal melt crystallization kinetics of PESub at different cooling rates, while the Ozawa equation failed. © 2015 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2016, 133, 43086.

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Crystallization and melting behavior of biodegradable poly(ethylene succinate‐co‐6 mol % butylene succinate)

Cited by 23 publications

References 37 publications

Graphene‐reinforced biodegradable poly(ethylene succinate) nanocomposites prepared by in situ polymerization

Graphene‐reinforced biodegradable poly(ethylene succinate) nanocomposites prepared by in situ polymerization

Influence of Thermally Reduced Graphene Low-Loadings on the Crystallization Behavior and Morphology of Biodegradable Poly(ethylene succinate)

Crystallization kinetics and morphology of poly(ethylene suberate)

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