Miscibility and crystallization in crystalline/crystalline blends of poly(butylene succinate)/poly(ethylene oxide)

Qiu, Zhaobin; Ikehara, Takayuki; Nishi, Toshio

doi:10.1016/s0032-3861(03)00149-6

Cited by 186 publications

(194 citation statements)

References 30 publications

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“…Researchers have found that the binary miscible crystalline/crystalline polymers show the confined and fractional crystallization behavior because of the phase separation and segregation in different length scales during crystallization process. These crystalline/crystalline polymer blends included poly(ethylene terephthalate) (PET)/poly(butylene terephthalate) (PBT) [75], poly(3-hydroxybutyrate) (PHB)/poly(ethylene oxide) (PEO) [76,77], poly(vinylidene fluoride) (PVDF)/poly(butylene adipate) (PBA) [78][79][80], PVDF/poly(butylene succinate-co-butylene adipate) (PBSA) [81], PVDF/PHB [82], PVDF/poly(butylene succinate) (PBS) [83][84][85], PBS/PEO [86][87][88][89][90][91][92], PBS/PBA [93,94], poly(butylene adipate-co-butylene succinate) (PBAS)/PEO [95], poly(ethylene succinate) (PES)/PEO [96], PLLA/poly(oxymethylene) [97,98], and so on. Expect for the miscible blends with one or two crystalline homopolymers, the miscible copolymer/copolymer blends having crystalline components or blocks could also show the confined crystallization behavior [99,100].…”

Section: Crystalline Morphology Of Polymers Confined In Miscible Blendsmentioning

confidence: 99%

Crystalline and Spherulitic Morphology of Polymers Crystallized in Confined Systems

Xie

Bao

et al. 2017

Crystals

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Due to the effects of microphase separation and physical dimensions, confinement widely exists in the multi-component polymer systems (e.g., polymer blends, copolymers) and the polymers having nanoscale dimensions, such as thin films and nanofibers. Semicrystalline polymers usually show different crystallization kinetics, crystalline structure and morphology from the bulk when they are confined in the nanoscale environments; this may dramatically influence the physical performances of the resulting materials. Therefore, investigations on the crystalline and spherulitic morphology of semicrystalline polymers in confined systems are essential from both scientific and technological viewpoints; significant progresses have been achieved in this field in recent years. In this article, we will review the recent research progresses on the crystalline and spherulitic morphology of polymers crystallized in the nanoscale confined environments. According to the types of confined systems, crystalline, spherulitic morphology and morphological evolution of semicrystalline polymers in the ultrathin films, miscible polymer blends and block copolymers will be summarized and reviewed.

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Section: Crystalline Morphology Of Polymers Confined In Miscible Blendsmentioning

confidence: 99%

Crystalline and Spherulitic Morphology of Polymers Crystallized in Confined Systems

Xie

Bao

et al. 2017

Crystals

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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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“…The phase behavior of blends of PEO/PLLA has been studied by Nakafuku et al 6 and Nijenhuis et al 7 It is also known to be miscible with semicrystalline polyesters, such as poly(3-hydroxybutyric acid) (PHB), 8 poly(ethylene succinate) (PESu) 9 and poly(butylene succinate) (PBSu). 10 Partial miscibility with phase domains in blends of PEO with PLLA of high molecular weight has been claimed. 6,7 Reportedly, blending PEO with PLLA can further enhance the biocompatibility of PLLA; 11,12 however, separate domains in both the amorphous and crystalline domains in PEO/PLLA might make it complicated to addressing the biocompatibility.…”

Section: Introductionmentioning

confidence: 99%

Lamellar orientation and interlamellar cracks in co-crystallized poly(ethylene oxide)/poly(L-lactic acid) blend

Hsieh

Nurkhamidah

Woo

2011

Polym J

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The correlation between the lamellar orientation in ring-banded spherulites and crack patterns in blends of two crystalline polymers crystallized in two steps was investigated. The two polymers were poly(ethylene oxide) (PEO) and poly(L-lactic acid) (PLLA) with a low molecular weight. The techniques used for this investigation included polarizing light optical microscopy, scanning electron microscopy and atomic force microscopy. Crack formation was influenced by the ring band patterns in PLLA and overlapping or impingement between PEO spherulites upon cooling. By extracting the water-soluble PEO from the PEO/PLLA blend, the inner morphology of the lamellar textures was further revealed to have a complex pattern. It consisted of the outer macro-lamellae with a flat-on width of 20 lm and twisting micro-lamellae with a 1-2 lm edge-on width. As the excess PEO was etched off from the valley and the interlamellar crevices of the PLLA lamellae, the outer macro-lamellae plates (B20 lm flat-on width) exhibited up and down periodicity with flat-on orientation. However, the micro-lamellae (with 1-2 lm edge-on width) with twisting were visible inside the cracks. Similar analysis of a PEO-rich composition, PEO/PLLA (80/20) blend with irregular ring bands and no cracks, revealed that the outer macro-lamellae were not present. However, all micro-lamellae twists in the ridge regions irregularly protrude out to create zig-zag banding.

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Miscibility and crystallization in crystalline/crystalline blends of poly(butylene succinate)/poly(ethylene oxide)

Cited by 186 publications

References 30 publications

Crystalline and Spherulitic Morphology of Polymers Crystallized in Confined Systems

Crystalline and Spherulitic Morphology of Polymers Crystallized in Confined Systems

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

Lamellar orientation and interlamellar cracks in co-crystallized poly(ethylene oxide)/poly(L-lactic acid) blend

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