Synthesis and characterization of poly(hexamethylene 2,6-naphthalate)-block-poly(tetrahydrofuran) copolymers with shape memory effect

Walkowiak, Konrad; Irska, Izabela; Paszkiewicz, Sandra

doi:10.1016/j.materresbull.2022.111954

Cited by 4 publications

(3 citation statements)

References 32 publications

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“…The DMTA measurement did not detect the α 1 due to partial miscibility and low content of amorphous PHF. A similar observation was conducted in Ref 58…”

Section: Resultssupporting

confidence: 84%

Influence of flexible segment length on the phase structure and properties of poly(hexamethylene 2,5‐furandicarboxylate)‐block‐biopolytetrahydrofuran copolymers

Paszkiewicz,

Walkowiak,

Irska

et al. 2024

J of Applied Polymer Sci

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Two series of biobased poly(ether‐ester)s comprised of poly(hexamethylene 2,5‐furandicarboxylate) (PHF) as the rigid segments and biopolytetrahydrofuran (pTHF) with different molecular masses (1000 and 2000 g/mol) as the flexible segments were synthesized employing polycondensation in the molten state. The study mainly focuses on comparing these two series in terms of the length of the flexible segment. The content of pTHF segments in the copolymer chains varied from 25 to 75 wt.%. The molecular structure and composition, phase structure, and thermal and mechanical properties were characterized by nuclear magnetic resonance (1H NMR) and Fourier‐transformed infrared (FTIR) spectroscopies, differential scanning calorimetry (DSC), dynamic mechanical thermal analysis (DMTA), and positron annihilation lifetime spectroscopy (PALS). In addition, mechanical performance and thermo‐oxidative and thermal stability have been investigated. Moreover, cyclic tensile properties were studied to evaluate the elastic properties. 1H NMR and FTIR spectroscopies demonstrate that the syntheses were correctly carried out, which made it possible to obtain the desired compositions of the block copolymers with high molecular masses. The decrease in Tm1, Tc1, and XcPHF values was visible, along with the increase in the flexible segment content. Moreover, the characteristic properties measured by PALS and the values of temperatures designated from TGA (inert and oxidizing atmosphere) did not vary between copolymer series PHF‐b‐F‐pTHF1000 and PHF‐b‐F‐pTHF2000. In turn, along with an increase in flexible segment content and the length of the pTHF, the values of tensile modulus, stress at break, and hardness decrease, while the value of elongation at break increases.

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“…The DMTA measurement did not detect the α 1 due to partial miscibility and low content of amorphous PHF. A similar observation was conducted in Ref 58…”

Section: Resultssupporting

confidence: 84%

Influence of flexible segment length on the phase structure and properties of poly(hexamethylene 2,5‐furandicarboxylate)‐block‐biopolytetrahydrofuran copolymers

Paszkiewicz,

Walkowiak,

Irska

et al. 2024

J of Applied Polymer Sci

Self Cite

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“…By contrast, multiple peaks are observed in the traces of the PBSN copolymers, with a lower peak near the PBS value and a higher peak near the PBN value. [45,46] On the other hand, the storage modulus curves of the PBSN copolymers showed different tendencies than those of the PBS and PBN, presenting two stages of reduction in the heating process, thereby revealing evidence of the glass transition behaviors of different phases. These indicate microphase separation behaviors in each of the PBSN copolymers.…”

Section: Resultsmentioning

confidence: 97%

“…The samples can be restored to their original shapes by heating in a specific temperature range. [45,49,51] Therefore, the repeated deformation process may benefit the elastic recovery behavior, which in turn enhances the Rr value. The surfaces of the synthesized PBSN copolymer samples were cut and then heated at a specific temperature and observed under a microscope to determine their self-healing abilities.…”

Section: Resultsmentioning

confidence: 99%

Highly Stretchable Biobased Poly(butylene succinate)-Based Copolyesters with Shape Memory and Self-Healing Properties

Mao,

Chang,

Chu

et al. 2024

J Polym Environ

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In this study, a series of poly(butylene succinate)-based copolymers containing various quantities of dimethyl 2,6-naphthalene dicarboxylate (NDC) were synthesized via melt polymerization. The thermal stabilities of the copolymers were maintained, while a slight increment in the stability was observed as the NDC content increased. The results of differential scanning calorimetry and wide-angle X-ray diffraction demonstrated a reduction in the crystallizability of the copolymers with increasing NDC concentration. Unexpectedly, the tensile tests showed significant enhancement of the elongation rate from 122.5 to 2645.0% as the NDC content increased from 0 to 32 mol%. Samples with 28, 30, and 32 mol% NDC showed remarkable abilities with recovery rates above 90% after three test cycles. Moreover, apparent cut mark repairing behaviors were observed under 70 °C heating in samples containing 25, 28, and 30 mol% NDC. These results indicate the potential of the copolymers for self-healing and highly stretchable shape memory wound dressing material applications.

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Furan-based copoly(ester-ethers) and copoly(ester-amide-ethers). Comparison study on the phase structure, mechanical and thermal properties

Paszkiewicz

Walkowiak

Irska

et al. 2023

Polymer

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Synthesis and characterization of poly(hexamethylene 2,6-naphthalate)-block-poly(tetrahydrofuran) copolymers with shape memory effect

Cited by 4 publications

References 32 publications

Influence of flexible segment length on the phase structure and properties of poly(hexamethylene 2,5‐furandicarboxylate)‐block‐biopolytetrahydrofuran copolymers

Influence of flexible segment length on the phase structure and properties of poly(hexamethylene 2,5‐furandicarboxylate)‐block‐biopolytetrahydrofuran copolymers

Highly Stretchable Biobased Poly(butylene succinate)-Based Copolyesters with Shape Memory and Self-Healing Properties

Furan-based copoly(ester-ethers) and copoly(ester-amide-ethers). Comparison study on the phase structure, mechanical and thermal properties

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