Modulated crystallization behavior, polymorphic crystalline structure and enzymatic degradation of poly(butylene adipate): Effects of layered metal phosphonate

Chen, Yi‐Chun; Wang, Siyu; Chen, Qixian; Xi, Zhilin; Wang, Chenwan; Chen, Xiyi; Feng, Xinliang; Liang, Rong; Yang, Jinjun

doi:10.1016/j.eurpolymj.2015.09.020

Cited by 39 publications

(35 citation statements)

References 61 publications

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“…It further affirmed that iG‐VC induced heterogeneous and epitaxial nucleation of PCL because iG‐VC provides nucleation sites for PCL, which could nucleate on the surface of iG‐VC and accelerated the crystallization of PCL. Nucleating agents were incorporated into the polyesters to induce their epitaxial nucleation and further increase their crystallization temperatures and shorten crystallization times, as reported in our previous works …”

Section: Resultsmentioning

confidence: 99%

Fabrication and Physical Properties of Poly(ε‐Caprolactone)/Modified Graphene Nanocomposite

Lee

Chen

Yin

et al. 2016

Macro Materials & Eng

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A chemical strategy is attempted to modify graphene for its facilitated dispersion in poly(ε‐caprolactone) (PCL) matrix. Herein, graphite oxide is subjected to sequential treatment with phenyl isocyanate and vitamin C (VC) to yield graphene nanosheets (iG‐VC). It is noteworthy that following the reduction treatment, iG‐VC graphene sheets exfoliate within the PCL matrix and show appreciable interfacial compatibility with PCL matrix in organic solvent by virtue of improved polarity from isocyanate treatment. The tensile yield strength and Young's modulus of the PCL/iG‐VC composite exhibit pronounced enhancement as compared to neat PCL, despite of mere composition of graphene sheets. The tensile yield stress of composite is increased notably to reach 18.6 MPa at 3 wt% graphene sheets as compared to neat PCL. Likewise, Young's modulus of composite is observed to increase from 370 to 470 MPa at 5 wt% graphene sheets. Moreover, the crystallization temperature (Tc) and crystallinity of PCL increase significantly upon incorporation of small amount of iG‐VC. Ultimately, functional role of iG‐VC graphene sheets is demonstrated in enhancing electrical conductivity of PCL‐based nanocomposites. The plausible mechanisms are also proposed to explain the increased Tc, improved mechanical property, and improved electrical conductivity of PCL/iG‐VC composite.

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Section: Resultsmentioning

confidence: 99%

Fabrication and Physical Properties of Poly(ε‐Caprolactone)/Modified Graphene Nanocomposite

Lee

Chen

Yin

et al. 2016

Macro Materials & Eng

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“…The nucleation mechanism of the PCL in the presence of the EBH is probably attributed to the epitaxial nucleation, that is, there is good matching of the crystal lattice between the PCL and EBH. It is reported that excellent crystal lattice matching between the NA and polymer results in accelerated nucleation and/or formation of specific crystal modification of the polymer . In this case, the convincing nucleation mechanism is still investigated in depth in our work.…”

Section: Resultsmentioning

confidence: 99%

“…Nucleating agent (NA) is a kind of widely used additive to tailor the crystallization behavior, mechanical property, thermal stability, transparency, gas barrier ability (and so on) of the polymeric material, due to its ease to fabrication, low‐cost, efficiency, and time‐saving . Generally, due to the insolubility of inorganic nucleating agent (NA) filler/particle (without further chemical modification) in the molten polymer or their weak interaction, the aggregated NA probably result in uncontrolled NA shape, undesirable nucleation effect and relatively poor performances for the composite system containing the polymer and inorganic NA Therefore, organic NA is probably a better candidate additive incorporated into the polymeric material to enhance their interfacial interaction.…”

Section: Introductionmentioning

confidence: 99%

Crystallization behavior and physical property of poly( ε ‐caprolactone) tailored by a biocompatible linear diamide nucleating agent

Tang

Wang

Yang

et al. 2019

Polymer Crystallization

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An organic diamide nucleating agent [EBH, N,N'−ethylenebis (12 − hydroxystearamide)] with eco‐friendliness was incorporated into the poly(ε‐caprolactone) (PCL) to prepare a biocomposite. The differential scanning calorimetry results indicated that the crystallization temperature, crystallization rate and degree of crystallinity increased, and the crystallization time shortened for the PCL upon incorporation of the EBH. The crystal size decreased and crystal density increased with addition of the EBH. These evidences all showed that the EBH is an effective nucleating agent. Thermal stability of the PCL was enhanced substantially and mechanical property of the PCL was also improved. Mechanisms on enhanced thermal stability and improved mechanical property of the PCL tailored by the EBH were proposed and discussed.

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“…It was well documented that their degradation rate depends not only on the chemical structure but also on the multiscale structure in the condensed state, such as crystal size and crystal modification of polymorphic polymers . For example, poly(butylene adipate) (PBA) is a biodegradable material, which has two types of crystal forms known as the thermodynamically stable α‐form and kinetically favorable β‐form . Although the degradation rate of PBA is inversely proportional to the lamellar thickness in fixed form, its α‐form crystals degrade relatively faster than the β‐form regardless of the lamellar thickness .…”

Section: Introductionmentioning

confidence: 99%

Effect of hydrogen bonding strength on the morphology and polymorphism of poly(butylene adipate)

Huang

et al. 2020

Polymer Crystallization

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The morphology and polymorphism of poly(butylene adipate) (PBA) and its blend with poly(vinyl phenol) (PVPh) or phenoxy are studied. It is identified that the hydrogen bond strength of PBA/PVPh is higher than that of PBA/phenoxy. The ring‐banded structure disappears for PBA/phenoxy, which shows that the formation of a ring‐banded structure cannot directly correlate to the hydrogen bond strength. For the polymorphism of PBA, phenoxy does not influence of the polymorph selection compared to the neat PBA. The crystallization temperature range for the coexistence of α and β crystals of PBA/PVPh is slightly narrowed. The crystallization temperature range for the polymorphism is not consistent with the formation of the ring‐banded structure. Consequently, the ring‐banded spherulites of PBA cannot be correlated to the coexistence of α and β crystals. By contrast, the β‐to‐α transition temperature is affected by the incorporation of phenoxy and PVPh. The β‐to‐α transition temperature increases slightly as blending with phenoxy but significantly as blending with PVPh. This is attributed to the enhanced melting point of β‐PBA due to the formation of thicker lamellae when blending with the amorphous polymer. Thus, the melting of the original β‐PBA and accompanied recrystallization α‐PBA take place at a higher temperature in the blends than that in neat PBA.

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Modulated crystallization behavior, polymorphic crystalline structure and enzymatic degradation of poly(butylene adipate): Effects of layered metal phosphonate

Cited by 39 publications

References 61 publications

Fabrication and Physical Properties of Poly(ε‐Caprolactone)/Modified Graphene Nanocomposite

Fabrication and Physical Properties of Poly(ε‐Caprolactone)/Modified Graphene Nanocomposite

Crystallization behavior and physical property of poly( ε ‐caprolactone) tailored by a biocompatible linear diamide nucleating agent

Effect of hydrogen bonding strength on the morphology and polymorphism of poly(butylene adipate)

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