Unique Morphology of Poly(ethylene succinate)/Poly(ethylene oxide) Blends

Qiu, Zhaobin; Ikehara, Takayuki; Nishi, Toshio

doi:10.1021/ma025599x

Cited by 125 publications

(127 citation statements)

References 12 publications

(23 reference statements)

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“…39,41 That blend system is interesting in that the low T g component PCL enables the PC-whose high T g usually inhibits its crystallization-to crystallize to a remarkable extent. 36,37,41 Simultaneous crystallization (in the sense that the components crystallize at the same time) upon isothermal conditions, and the IPC as well as the ILC schemes, respectively, could be realized, for example, in the blend PBSU/ P(VDC-co-VC), [46][47][48][49][50][51][52][53] in the blend PESU/PEO 26,28 and in the blend PLA/P(BSU-co-BC). 44,45 The actual crystallization scheme-whether S-co-S, IPC, ILC, or IFC, whether one-step or two-step crystallization occurs-depends clearly on the composition and on the thermal conditions.…”

Section: Htc/ncc Systems: Crystallization Induced Composition Changesmentioning

confidence: 99%

Crystallization kinetical and morphological peculiarities in binary crystalline/crystalline polymer blends

Liu

Jungnickel

2007

J Polym Sci B Polym Phys

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A survey is presented on the crystallization kinetics and the morphology of miscible crystalline/crystalline polymer blends. There are only few corresponding systems. In them, however, a number of strange kinetic and structural phenomena can be observed: (i) spherulitic crystallization of the components side‐by‐side, (ii) “interpenetrating crystallization,” (iii) “interlocking spherulitic crystallization,” and (iv) “interfilling crystallization.” Cocrystallization is forbidden for crystallographic reasons. The blend partners grow instead in their own lamellar stacks, and mixed lamellar stacks are a seldom and questionable exception. They crystallize also usually stepwise and not simultaneously. Upon step crystallization, the crystallization of the second component is determined by its redistribution with crystallization of the former. Those composition inhomogeneities are an independent issue that arises also with the development of the morphology in crystalline/amorphous blends, and a corresponding survey is yielded, too. The blend poly (vinylidene fluoride)/poly‐β‐hydroxybutyrate is a convenient model system as it can show all of these morphological and kinetic features after suitable thermal treatment. Some of them are demonstrated in the present publication. © 2007 Wiley Periodicals, Inc. J Polym Sci Part B: Polym Phys 45: 1917–1931, 2007

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Section: Htc/ncc Systems: Crystallization Induced Composition Changesmentioning

confidence: 99%

Crystallization kinetical and morphological peculiarities in binary crystalline/crystalline polymer blends

Liu

Jungnickel

2007

J Polym Sci B Polym Phys

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“…It can be synthesized by either ring-opening polymerization of succinic anhydride or by polycondensation of succinic acid and ethylene glycol 27 . PESu has been successfully blended with a number of polymers in an attempt to improve its physical properties and increase its biodegradation rates, such as poly(ε-caprolactone) 28 , poly(butylene succinate) 29,30 , poly(octamethylene succinate) 31 , poly(decamethylene succinate) 32,33 , poly(ethylene oxide) 34 , poly(ethylene terephthalate) 35 , poly(l-lactide) 26 , poly(diethylene glycol succinate) 36 , poly(ethylene adipate) 37 and others. The majority of those materials exhibit good compatibility in blends and improved biodegradation rates.…”

Section: Introductionmentioning

confidence: 99%

Biobased poly(ethylene furanoate-co-ethylene succinate) copolyesters: solid state structure, melting point depression and biodegradability

et al. 2016

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Poly(ethylene furanoate) (PEF) is a fully bio-based polyester with unique gas barrier properties, considered an alternative to poly(ethylene terephthalate) (PET) in food packaging applications. However, it is not biodegradable. For this reason copolymerization with the aliphatic succinic acid monomer, was followed. The respective poly(ethylene furanoate-co-ethylene succinate) (PEFSu) copolymers were prepared via melt polycondensation from 2,5-dimethylfuran-dicarboxylate, succinic acid and ethylene glycol at different ratios.1 HNMR spectroscopy showed the copolymers are random. The crystallization and melting of the copolymers were thoroughly evaluated. Isodimorphic cocrystallization was concluded from both the 2 WAXD patterns and the minimum in the plots of melting temperature versus composition. The pseudo-eutectic melting point corresponded to an ethylene succinate content of about 30 mol%. The enzymatic hydrolysis tests using of Rhizopus delemarand Pseudomonas Cepacia lipase, revealed that the copolymers with up to 50 mol% ES units show measurable weight loss rates. For higher ES content, the copolymers showed fast hydrolysis.

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“…17,18 We also studied the subsequent melting behavior of PES crystallized nonisothermally from the melt and the crystallization kinetics as well as subsequent melting behaviour of PES from the amorphous glassy state. 13,19 Crystallinity is known to play an important role in the physical properties and biodegradability of biodegradable polymers.…”

mentioning

confidence: 99%

“…[14][15][16] The crystallization and morphology of PES in binary miscible blends of two crystalline polymers have also been reported recently, such as in PES/PHB and PES/PEO blends. 17,18 We also studied the subsequent melting behavior of PES crystallized nonisothermally from the melt and the crystallization kinetics as well as subsequent melting behaviour of PES from the amorphous glassy state. 13,19 Crystallinity is known to play an important role in the physical properties and biodegradability of biodegradable polymers.…”

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Nonisothermal Crystallization Kinetics of Poly(butylene succinate) and Poly(ethylene succinate)

Qiu

Fujinami

Komura

et al. 2004

Polym J

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Much more attention has been directed to biodegradable polymers due to their potential applications in the fields related to environmental protection in the last two decades. According to the difference in preparation methods, biodegradable polymers can be classified into two types. One is the biosynthetic polymer, such as bacterial polyhydroxyalkanoates (PHAs). Among them poly(hydroxybutyrate) (PHB) is probably the most extensively studied biodegradable thermoplastic polymer. Ha et al. recently reviewed the miscibility, properties and biodegradability of blends containing either PHB or poly(3-hydroxybutyrate-cohydroxyvalerate).1 The other is the chemosynthetic polymer, such as the aliphatic polyesters. Poly(butylene succinate) (PBSU) and poly(ethylene succinate) (PES) are just two of them. The chemical structures of PBSU and PES are (-OCH The crystal structure, crystallization and melting behaviour of PBSU have been reported in literature. 2-4Polymer blending is often performed in order to improve the physical properties and extend the application fields of PBSU. PBSU was found to be miscible with poly(vinylidene fluoride), poly(vinylidene chloride-co-vinyl chloride), poly(ethylene oxide) (PEO) and poly(vinyl phenol).5-9 On the other hand, PBSU was found to show no miscibility with PHB, poly(3-hydroxybutyrate-co-hydroxyvalerate) and poly("-caprolactone). [10][11][12] We also studied the subsequent melting behavior of PBSU crystallized nonisothermally from the melt. 13The crystal structure, crystallization behaviour and melting behaviour of PES have been reported in literature.14-16 The crystallization and morphology of PES in binary miscible blends of two crystalline polymers have also been reported recently, such as in PES/PHB and PES/PEO blends. 17,18 We also studied the subsequent melting behavior of PES crystallized nonisothermally from the melt and the crystallization kinetics as well as subsequent melting behaviour of PES from the amorphous glassy state. 13,19 Crystallinity is known to play an important role in the physical properties and biodegradability of biodegradable polymers. Meanwhile, the crystalline structure and morphology of semicrystalline polymers are also influenced greatly by the thermal history. Therefore, much more attention should be paid to the crystallization kinetics study since it affects not only the crystalline structure and morphology of semicrystalline polymers but also the final physical properties and biodegradability for the biodegradable polymers. However, to the best of our knowledge, the overall crystallization kinetics studies, especially the nonisothermal crystallization kinetics studies from the melt, of PBSU and PES have not been reported so far in literature. But it is essential to study the nonisothermal crystallization kinetics from the viewpoint of practical application because most polymer processing operations are carried out under nonisothermal conditions.In this note we reported our results on the nonisothermal crystallization kinetics of PBSU and PES from the ...

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Unique Morphology of Poly(ethylene succinate)/Poly(ethylene oxide) Blends

Cited by 125 publications

References 12 publications

Crystallization kinetical and morphological peculiarities in binary crystalline/crystalline polymer blends

Crystallization kinetical and morphological peculiarities in binary crystalline/crystalline polymer blends

Biobased poly(ethylene furanoate-co-ethylene succinate) copolyesters: solid state structure, melting point depression and biodegradability

Nonisothermal Crystallization Kinetics of Poly(butylene succinate) and Poly(ethylene succinate)

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